./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:15:00,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:15:00,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:15:00,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:15:00,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:15:00,712 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:15:00,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:15:00,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:15:00,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:15:00,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:15:00,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:15:00,737 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:15:00,739 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:15:00,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:15:00,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:15:00,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:15:00,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:15:00,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:15:00,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:15:00,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:15:00,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:15:00,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:15:00,776 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:15:00,777 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:15:00,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:15:00,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:15:00,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:15:00,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:15:00,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:15:00,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:15:00,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:15:00,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:15:00,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:15:00,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:15:00,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:15:00,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:15:00,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:15:00,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:15:00,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:15:00,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:15:00,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:15:00,794 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-20 06:15:00,820 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:15:00,821 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:15:00,821 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:15:00,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:15:00,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:15:00,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:15:00,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:15:00,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:15:00,823 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:15:00,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:15:00,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:15:00,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:15:00,824 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:15:00,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:15:00,829 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:15:00,829 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:15:00,829 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:15:00,829 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:15:00,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:15:00,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:15:00,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:15:00,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:15:00,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:15:00,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:15:00,831 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:15:00,831 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:15:00,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:15:00,832 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:15:00,832 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:15:00,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:15:00,834 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:15:00,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2021-11-20 06:15:01,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:15:01,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:15:01,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:15:01,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:15:01,132 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:15:01,134 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-20 06:15:01,208 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/data/96bf10114/9062dc7da749450a957741aa369c7a27/FLAG7a8484b9a [2021-11-20 06:15:02,111 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:15:02,112 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-20 06:15:02,180 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/data/96bf10114/9062dc7da749450a957741aa369c7a27/FLAG7a8484b9a [2021-11-20 06:15:02,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/data/96bf10114/9062dc7da749450a957741aa369c7a27 [2021-11-20 06:15:02,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:15:02,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:15:02,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:15:02,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:15:02,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:15:02,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:15:02" (1/1) ... [2021-11-20 06:15:02,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5453abcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:02, skipping insertion in model container [2021-11-20 06:15:02,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:15:02" (1/1) ... [2021-11-20 06:15:02,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:15:02,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:15:03,020 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_64e81701-4f22-4f96-819f-30e026a7ceb8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-20 06:15:03,027 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_64e81701-4f22-4f96-819f-30e026a7ceb8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-20 06:15:04,017 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,018 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,019 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,020 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,021 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,039 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,040 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,042 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,043 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,046 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,047 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,049 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,615 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 06:15:04,618 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 06:15:04,621 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 06:15:04,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 06:15:04,629 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 06:15:04,633 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 06:15:04,634 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 06:15:04,635 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 06:15:04,636 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 06:15:04,648 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 06:15:04,858 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 06:15:04,915 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:04,958 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,047 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,048 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,049 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,049 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,050 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,051 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,052 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,053 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,054 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,055 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,055 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,059 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,060 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,060 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,061 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,066 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,067 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,078 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,085 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,086 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,122 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,122 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,123 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,129 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:15:05,184 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:15:05,220 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_64e81701-4f22-4f96-819f-30e026a7ceb8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-20 06:15:05,221 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_64e81701-4f22-4f96-819f-30e026a7ceb8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-20 06:15:05,302 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,302 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,307 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,308 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,309 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,322 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,323 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,327 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,327 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,328 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,328 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,397 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 06:15:05,398 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 06:15:05,399 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 06:15:05,400 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 06:15:05,402 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 06:15:05,402 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 06:15:05,403 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 06:15:05,403 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 06:15:05,404 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 06:15:05,405 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 06:15:05,442 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 06:15:05,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,474 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,528 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,529 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,529 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,530 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,531 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,531 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,532 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,532 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,533 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,534 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,535 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,537 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,538 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,539 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,540 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,543 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,555 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,558 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,558 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,566 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,567 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:05,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:15:05,848 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:15:05,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:05 WrapperNode [2021-11-20 06:15:05,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:15:05,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:15:05,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:15:05,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:15:05,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:05" (1/1) ... [2021-11-20 06:15:06,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:05" (1/1) ... [2021-11-20 06:15:06,161 INFO L137 Inliner]: procedures = 697, calls = 1921, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1060 [2021-11-20 06:15:06,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:15:06,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:15:06,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:15:06,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:15:06,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:05" (1/1) ... [2021-11-20 06:15:06,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:05" (1/1) ... [2021-11-20 06:15:06,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:05" (1/1) ... [2021-11-20 06:15:06,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:05" (1/1) ... [2021-11-20 06:15:06,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:05" (1/1) ... [2021-11-20 06:15:06,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:05" (1/1) ... [2021-11-20 06:15:06,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:05" (1/1) ... [2021-11-20 06:15:06,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:15:06,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:15:06,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:15:06,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:15:06,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:05" (1/1) ... [2021-11-20 06:15:06,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:15:06,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:15:06,403 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:15:06,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:15:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-20 06:15:06,463 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-20 06:15:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-20 06:15:06,463 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-20 06:15:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:15:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-20 06:15:06,463 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-20 06:15:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-20 06:15:06,464 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-20 06:15:06,464 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 06:15:06,464 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 06:15:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-20 06:15:06,465 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-20 06:15:06,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-20 06:15:06,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:15:06,469 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-20 06:15:06,469 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-20 06:15:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:15:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:15:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-11-20 06:15:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-11-20 06:15:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:15:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:15:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:15:06,477 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-20 06:15:06,477 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-20 06:15:06,477 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-20 06:15:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-20 06:15:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:15:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:15:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 06:15:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 06:15:06,505 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-20 06:15:06,505 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-20 06:15:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 06:15:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-20 06:15:06,506 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-20 06:15:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-20 06:15:06,506 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-20 06:15:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-20 06:15:06,506 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-20 06:15:06,506 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 06:15:06,507 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 06:15:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 06:15:06,507 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 06:15:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-20 06:15:06,507 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-20 06:15:06,507 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-20 06:15:06,507 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-20 06:15:06,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:15:06,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:15:06,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:15:06,508 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-20 06:15:06,508 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-20 06:15:06,508 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 06:15:06,508 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 06:15:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-20 06:15:06,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-20 06:15:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:15:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-20 06:15:06,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-20 06:15:06,509 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 06:15:06,509 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 06:15:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 06:15:06,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-20 06:15:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:15:06,510 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-11-20 06:15:06,510 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-11-20 06:15:07,044 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:15:07,048 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:15:09,900 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:15:09,925 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:15:09,925 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-20 06:15:09,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:15:09 BoogieIcfgContainer [2021-11-20 06:15:09,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:15:09,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:15:09,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:15:09,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:15:09,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:15:02" (1/3) ... [2021-11-20 06:15:09,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d95d4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:15:09, skipping insertion in model container [2021-11-20 06:15:09,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:05" (2/3) ... [2021-11-20 06:15:09,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d95d4e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:15:09, skipping insertion in model container [2021-11-20 06:15:09,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:15:09" (3/3) ... [2021-11-20 06:15:09,940 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2021-11-20 06:15:09,950 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:15:09,950 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 06:15:10,025 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:15:10,043 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:15:10,047 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 06:15:10,098 INFO L276 IsEmpty]: Start isEmpty. Operand has 460 states, 270 states have (on average 1.2703703703703704) internal successors, (343), 275 states have internal predecessors, (343), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-20 06:15:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-20 06:15:10,132 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:10,133 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, 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] [2021-11-20 06:15:10,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:10,138 INFO L85 PathProgramCache]: Analyzing trace with hash 207530193, now seen corresponding path program 1 times [2021-11-20 06:15:10,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:10,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633855108] [2021-11-20 06:15:10,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:10,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:10,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:15:10,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:10,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:15:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:15:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 06:15:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:10,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:15:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:15:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:15:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:15:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:15:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 06:15:11,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:15:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 06:15:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:15:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 06:15:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:15:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-20 06:15:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 06:15:11,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 06:15:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 06:15:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 06:15:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 06:15:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-20 06:15:11,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:11,340 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-20 06:15:11,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:11,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633855108] [2021-11-20 06:15:11,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633855108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:11,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:11,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 06:15:11,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730145705] [2021-11-20 06:15:11,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:11,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:15:11,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:11,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:15:11,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:15:11,392 INFO L87 Difference]: Start difference. First operand has 460 states, 270 states have (on average 1.2703703703703704) internal successors, (343), 275 states have internal predecessors, (343), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-20 06:15:14,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:14,990 INFO L93 Difference]: Finished difference Result 1349 states and 2508 transitions. [2021-11-20 06:15:14,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:15:14,993 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2021-11-20 06:15:14,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:15,020 INFO L225 Difference]: With dead ends: 1349 [2021-11-20 06:15:15,020 INFO L226 Difference]: Without dead ends: 895 [2021-11-20 06:15:15,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:15:15,047 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 537 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 697 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 697 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:15,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 1542 Invalid, 1609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [697 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-11-20 06:15:15,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2021-11-20 06:15:15,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 453. [2021-11-20 06:15:15,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 265 states have (on average 1.2339622641509433) internal successors, (327), 268 states have internal predecessors, (327), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2021-11-20 06:15:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 645 transitions. [2021-11-20 06:15:15,284 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 645 transitions. Word has length 141 [2021-11-20 06:15:15,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:15,285 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 645 transitions. [2021-11-20 06:15:15,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-20 06:15:15,286 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 645 transitions. [2021-11-20 06:15:15,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-20 06:15:15,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:15,290 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:15:15,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:15:15,291 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:15,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1080700984, now seen corresponding path program 1 times [2021-11-20 06:15:15,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:15,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167281039] [2021-11-20 06:15:15,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:15,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:15:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:15:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:15:15,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 06:15:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:15:15,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:15:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:15:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:15:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:15:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 06:15:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 06:15:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 06:15:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:15:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 06:15:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:15:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-11-20 06:15:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 06:15:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 06:15:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 06:15:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-20 06:15:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-11-20 06:15:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:15,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-20 06:15:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-11-20 06:15:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-20 06:15:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-11-20 06:15:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:16,060 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-11-20 06:15:16,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:16,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167281039] [2021-11-20 06:15:16,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167281039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:15:16,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837031512] [2021-11-20 06:15:16,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:16,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:15:16,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:15:16,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:15:16,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 06:15:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:16,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 2323 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 06:15:16,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:15:17,139 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-20 06:15:17,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:15:17,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837031512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:17,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:15:17,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-11-20 06:15:17,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504591011] [2021-11-20 06:15:17,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:17,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:15:17,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:17,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:15:17,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:15:17,144 INFO L87 Difference]: Start difference. First operand 453 states and 645 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 06:15:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:18,725 INFO L93 Difference]: Finished difference Result 872 states and 1259 transitions. [2021-11-20 06:15:18,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:15:18,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 156 [2021-11-20 06:15:18,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:18,733 INFO L225 Difference]: With dead ends: 872 [2021-11-20 06:15:18,733 INFO L226 Difference]: Without dead ends: 455 [2021-11-20 06:15:18,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:15:18,739 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 665 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:18,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [687 Valid, 2237 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 06:15:18,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-11-20 06:15:18,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2021-11-20 06:15:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 266 states have (on average 1.2330827067669172) internal successors, (328), 270 states have internal predecessors, (328), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (171), 158 states have call predecessors, (171), 158 states have call successors, (171) [2021-11-20 06:15:18,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 659 transitions. [2021-11-20 06:15:18,787 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 659 transitions. Word has length 156 [2021-11-20 06:15:18,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:18,787 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 659 transitions. [2021-11-20 06:15:18,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 06:15:18,788 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 659 transitions. [2021-11-20 06:15:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-20 06:15:18,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:18,792 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:15:18,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:15:19,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:15:19,017 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:19,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:19,018 INFO L85 PathProgramCache]: Analyzing trace with hash 651465952, now seen corresponding path program 1 times [2021-11-20 06:15:19,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:19,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058969389] [2021-11-20 06:15:19,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:19,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:15:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 06:15:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 06:15:19,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-20 06:15:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:15:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:15:19,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-11-20 06:15:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-11-20 06:15:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-20 06:15:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 06:15:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-20 06:15:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 06:15:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 06:15:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:15:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-11-20 06:15:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 06:15:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 06:15:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 06:15:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 06:15:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 06:15:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-11-20 06:15:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-20 06:15:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-11-20 06:15:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-11-20 06:15:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-11-20 06:15:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-20 06:15:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:19,722 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-11-20 06:15:19,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:19,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058969389] [2021-11-20 06:15:19,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058969389] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 06:15:19,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834523062] [2021-11-20 06:15:19,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:19,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:15:19,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:15:19,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:15:19,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 06:15:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:20,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:15:20,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:15:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-20 06:15:20,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:15:20,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834523062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:20,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:15:20,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-11-20 06:15:20,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233455659] [2021-11-20 06:15:20,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:20,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:15:20,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:20,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:15:20,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:15:20,858 INFO L87 Difference]: Start difference. First operand 455 states and 659 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 06:15:23,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:23,361 INFO L93 Difference]: Finished difference Result 895 states and 1330 transitions. [2021-11-20 06:15:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:15:23,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 164 [2021-11-20 06:15:23,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:23,368 INFO L225 Difference]: With dead ends: 895 [2021-11-20 06:15:23,369 INFO L226 Difference]: Without dead ends: 476 [2021-11-20 06:15:23,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-20 06:15:23,379 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 691 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:23,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 3303 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-20 06:15:23,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-11-20 06:15:23,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 474. [2021-11-20 06:15:23,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-11-20 06:15:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2021-11-20 06:15:23,430 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 164 [2021-11-20 06:15:23,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:23,431 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2021-11-20 06:15:23,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 06:15:23,432 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2021-11-20 06:15:23,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-20 06:15:23,435 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:23,435 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:15:23,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:15:23,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:15:23,661 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:23,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:23,661 INFO L85 PathProgramCache]: Analyzing trace with hash 706817890, now seen corresponding path program 1 times [2021-11-20 06:15:23,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:23,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477789723] [2021-11-20 06:15:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:23,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:23,755 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:15:23,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757925468] [2021-11-20 06:15:23,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:23,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:15:23,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:15:23,757 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:15:23,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 06:15:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:24,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:15:24,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:15:24,789 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-20 06:15:24,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:15:24,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:24,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477789723] [2021-11-20 06:15:24,790 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:15:24,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757925468] [2021-11-20 06:15:24,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757925468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:24,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:24,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 06:15:24,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658269457] [2021-11-20 06:15:24,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:24,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:15:24,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:24,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:15:24,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:15:24,792 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-20 06:15:26,232 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:15:27,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:27,888 INFO L93 Difference]: Finished difference Result 920 states and 1403 transitions. [2021-11-20 06:15:27,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:15:27,889 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 179 [2021-11-20 06:15:27,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:27,895 INFO L225 Difference]: With dead ends: 920 [2021-11-20 06:15:27,895 INFO L226 Difference]: Without dead ends: 482 [2021-11-20 06:15:27,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:15:27,900 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 689 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:27,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 2763 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-11-20 06:15:27,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-11-20 06:15:27,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 474. [2021-11-20 06:15:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-11-20 06:15:27,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2021-11-20 06:15:27,974 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 179 [2021-11-20 06:15:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:27,975 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2021-11-20 06:15:27,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-20 06:15:27,975 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2021-11-20 06:15:27,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-20 06:15:27,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:27,980 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:15:28,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:15:28,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:15:28,205 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:28,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:28,205 INFO L85 PathProgramCache]: Analyzing trace with hash -548515061, now seen corresponding path program 1 times [2021-11-20 06:15:28,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:28,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264765299] [2021-11-20 06:15:28,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:28,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:28,268 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:15:28,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796909374] [2021-11-20 06:15:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:28,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:15:28,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:15:28,270 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:15:28,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 06:15:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:15:28,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 2564 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 06:15:28,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:15:29,317 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-20 06:15:29,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 06:15:29,317 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:29,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264765299] [2021-11-20 06:15:29,317 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:15:29,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796909374] [2021-11-20 06:15:29,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796909374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:15:29,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:29,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 06:15:29,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353809575] [2021-11-20 06:15:29,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:15:29,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:15:29,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:15:29,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:15:29,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:15:29,320 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-20 06:15:32,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:15:32,966 INFO L93 Difference]: Finished difference Result 930 states and 1407 transitions. [2021-11-20 06:15:32,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:15:32,967 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 195 [2021-11-20 06:15:32,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:15:32,975 INFO L225 Difference]: With dead ends: 930 [2021-11-20 06:15:32,976 INFO L226 Difference]: Without dead ends: 492 [2021-11-20 06:15:32,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:15:32,982 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 754 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:15:32,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [804 Valid, 3726 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-20 06:15:32,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-20 06:15:33,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 474. [2021-11-20 06:15:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2021-11-20 06:15:33,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2021-11-20 06:15:33,030 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 195 [2021-11-20 06:15:33,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:15:33,031 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2021-11-20 06:15:33,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-20 06:15:33,031 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2021-11-20 06:15:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-20 06:15:33,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:15:33,038 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:15:33,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:15:33,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:15:33,265 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:15:33,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:15:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash -2018600789, now seen corresponding path program 2 times [2021-11-20 06:15:33,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:15:33,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898483023] [2021-11-20 06:15:33,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:15:33,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:15:33,338 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-20 06:15:33,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1829471098] [2021-11-20 06:15:33,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:15:33,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:15:33,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:15:33,340 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 06:15:33,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 06:15:34,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:15:34,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:15:34,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 223 conjunts are in the unsatisfiable core [2021-11-20 06:15:34,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:15:34,968 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 06:15:34,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 136 treesize of output 118 [2021-11-20 06:15:35,093 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 7 treesize of output 3 [2021-11-20 06:15:37,398 INFO L354 Elim1Store]: treesize reduction 312, result has 50.1 percent of original size [2021-11-20 06:15:37,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 79 select indices, 79 select index equivalence classes, 3003 disjoint index pairs (out of 3081 index pairs), introduced 79 new quantified variables, introduced 78 case distinctions, treesize of input 396 treesize of output 550 [2021-11-20 06:15:52,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:15:52,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898483023] [2021-11-20 06:15:52,777 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-20 06:15:52,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829471098] [2021-11-20 06:15:52,777 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Requested array size exceeds VM limit [2021-11-20 06:15:52,777 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:15:52,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-20 06:15:52,777 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-20 06:15:52,777 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-20 06:15:52,786 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-11-20 06:15:52,788 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-11-20 06:15:52,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-20 06:15:53,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 06:15:53,008 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2021-11-20 06:15:53,011 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 06:15:53,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 06:15:53 BoogieIcfgContainer [2021-11-20 06:15:53,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 06:15:53,046 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:15:53,046 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:15:53,047 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:15:53,047 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:15:09" (3/4) ... [2021-11-20 06:15:53,050 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 06:15:53,050 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:15:53,051 INFO L158 Benchmark]: Toolchain (without parser) took 50473.11ms. Allocated memory was 113.2MB in the beginning and 541.1MB in the end (delta: 427.8MB). Free memory was 86.3MB in the beginning and 259.6MB in the end (delta: -173.4MB). Peak memory consumption was 255.2MB. Max. memory is 16.1GB. [2021-11-20 06:15:53,051 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:15:53,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3270.09ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 86.3MB in the beginning and 73.7MB in the end (delta: 12.5MB). Peak memory consumption was 75.2MB. Max. memory is 16.1GB. [2021-11-20 06:15:53,052 INFO L158 Benchmark]: Boogie Procedure Inliner took 311.80ms. Allocated memory is still 136.3MB. Free memory was 73.7MB in the beginning and 62.5MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-20 06:15:53,052 INFO L158 Benchmark]: Boogie Preprocessor took 168.59ms. Allocated memory is still 136.3MB. Free memory was 62.5MB in the beginning and 53.4MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:15:53,052 INFO L158 Benchmark]: RCFGBuilder took 3596.85ms. Allocated memory was 136.3MB in the beginning and 197.1MB in the end (delta: 60.8MB). Free memory was 52.8MB in the beginning and 120.2MB in the end (delta: -67.4MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2021-11-20 06:15:53,052 INFO L158 Benchmark]: TraceAbstraction took 43113.60ms. Allocated memory was 197.1MB in the beginning and 541.1MB in the end (delta: 343.9MB). Free memory was 119.1MB in the beginning and 259.6MB in the end (delta: -140.5MB). Peak memory consumption was 204.5MB. Max. memory is 16.1GB. [2021-11-20 06:15:53,053 INFO L158 Benchmark]: Witness Printer took 4.17ms. Allocated memory is still 541.1MB. Free memory is still 259.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:15:53,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 86.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3270.09ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 86.3MB in the beginning and 73.7MB in the end (delta: 12.5MB). Peak memory consumption was 75.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 311.80ms. Allocated memory is still 136.3MB. Free memory was 73.7MB in the beginning and 62.5MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 168.59ms. Allocated memory is still 136.3MB. Free memory was 62.5MB in the beginning and 53.4MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 3596.85ms. Allocated memory was 136.3MB in the beginning and 197.1MB in the end (delta: 60.8MB). Free memory was 52.8MB in the beginning and 120.2MB in the end (delta: -67.4MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. * TraceAbstraction took 43113.60ms. Allocated memory was 197.1MB in the beginning and 541.1MB in the end (delta: 343.9MB). Free memory was 119.1MB in the beginning and 259.6MB in the end (delta: -140.5MB). Peak memory consumption was 204.5MB. Max. memory is 16.1GB. * Witness Printer took 4.17ms. Allocated memory is still 541.1MB. Free memory is still 259.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 223]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of large string literal at line 7788, overapproximation of __builtin_umull_overflow at line 255. Possible FailurePath: [L6915-L6920] static struct aws_allocator s_can_fail_allocator_static = { .mem_acquire = s_can_fail_malloc_allocator, .mem_release = s_can_fail_free_allocator, .mem_realloc = s_can_fail_realloc_allocator, .mem_calloc = s_can_fail_calloc_allocator, }; [L7360] static __thread int tl_last_error = 0; [L7787-L7935] static struct aws_error_info errors[] = { [(AWS_ERROR_SUCCESS)-0x0000] = { .literal_name = "AWS_ERROR_SUCCESS", .error_code = (AWS_ERROR_SUCCESS), .error_str = ("Success."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_SUCCESS" ", " "Success.", } , [(AWS_ERROR_OOM)-0x0000] = { .literal_name = "AWS_ERROR_OOM", .error_code = (AWS_ERROR_OOM), .error_str = ("Out of memory."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_OOM" ", " "Out of memory.", } , [(AWS_ERROR_UNKNOWN)-0x0000] = { .literal_name = "AWS_ERROR_UNKNOWN", .error_code = (AWS_ERROR_UNKNOWN), .error_str = ("Unknown error."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_UNKNOWN" ", " "Unknown error.", } , [(AWS_ERROR_SHORT_BUFFER)-0x0000] = { .literal_name = "AWS_ERROR_SHORT_BUFFER", .error_code = (AWS_ERROR_SHORT_BUFFER), .error_str = ("Buffer is not large enough to hold result."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_SHORT_BUFFER" ", " "Buffer is not large enough to hold result.", } , [(AWS_ERROR_OVERFLOW_DETECTED)-0x0000] = { .literal_name = "AWS_ERROR_OVERFLOW_DETECTED", .error_code = (AWS_ERROR_OVERFLOW_DETECTED), .error_str = ("Fixed size value overflow was detected."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_OVERFLOW_DETECTED" ", " "Fixed size value overflow was detected.", } , [(AWS_ERROR_UNSUPPORTED_OPERATION)-0x0000] = { .literal_name = "AWS_ERROR_UNSUPPORTED_OPERATION", .error_code = (AWS_ERROR_UNSUPPORTED_OPERATION), .error_str = ("Unsupported operation."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_UNSUPPORTED_OPERATION" ", " "Unsupported operation.", } , [(AWS_ERROR_INVALID_BUFFER_SIZE)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_BUFFER_SIZE", .error_code = (AWS_ERROR_INVALID_BUFFER_SIZE), .error_str = ("Invalid buffer size."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_BUFFER_SIZE" ", " "Invalid buffer size.", } , [(AWS_ERROR_INVALID_HEX_STR)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_HEX_STR", .error_code = (AWS_ERROR_INVALID_HEX_STR), .error_str = ("Invalid hex string."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_HEX_STR" ", " "Invalid hex string.", } , [(AWS_ERROR_INVALID_BASE64_STR)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_BASE64_STR", .error_code = (AWS_ERROR_INVALID_BASE64_STR), .error_str = ("Invalid base64 string."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_BASE64_STR" ", " "Invalid base64 string.", } , [(AWS_ERROR_INVALID_INDEX)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_INDEX", .error_code = (AWS_ERROR_INVALID_INDEX), .error_str = ("Invalid index for list access."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_INDEX" ", " "Invalid index for list access.", } , [(AWS_ERROR_THREAD_INVALID_SETTINGS)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_INVALID_SETTINGS", .error_code = (AWS_ERROR_THREAD_INVALID_SETTINGS), .error_str = ("Invalid thread settings."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_INVALID_SETTINGS" ", " "Invalid thread settings.", } , [(AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE", .error_code = (AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE), .error_str = ("Insufficent resources for thread."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_INSUFFICIENT_RESOURCE" ", " "Insufficent resources for thread.", } , [(AWS_ERROR_THREAD_NO_PERMISSIONS)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_NO_PERMISSIONS", .error_code = (AWS_ERROR_THREAD_NO_PERMISSIONS), .error_str = ("Insufficient permissions for thread operation."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_NO_PERMISSIONS" ", " "Insufficient permissions for thread operation.", } , [(AWS_ERROR_THREAD_NOT_JOINABLE)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_NOT_JOINABLE", .error_code = (AWS_ERROR_THREAD_NOT_JOINABLE), .error_str = ("Thread not joinable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_NOT_JOINABLE" ", " "Thread not joinable.", } , [(AWS_ERROR_THREAD_NO_SUCH_THREAD_ID)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_NO_SUCH_THREAD_ID", .error_code = (AWS_ERROR_THREAD_NO_SUCH_THREAD_ID), .error_str = ("No such thread ID."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_NO_SUCH_THREAD_ID" ", " "No such thread ID.", } , [(AWS_ERROR_THREAD_DEADLOCK_DETECTED)-0x0000] = { .literal_name = "AWS_ERROR_THREAD_DEADLOCK_DETECTED", .error_code = (AWS_ERROR_THREAD_DEADLOCK_DETECTED), .error_str = ("Deadlock detected in thread."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_THREAD_DEADLOCK_DETECTED" ", " "Deadlock detected in thread.", } , [(AWS_ERROR_MUTEX_NOT_INIT)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_NOT_INIT", .error_code = (AWS_ERROR_MUTEX_NOT_INIT), .error_str = ("Mutex not initialized."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_NOT_INIT" ", " "Mutex not initialized.", } , [(AWS_ERROR_MUTEX_TIMEOUT)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_TIMEOUT", .error_code = (AWS_ERROR_MUTEX_TIMEOUT), .error_str = ("Mutex operation timed out."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_TIMEOUT" ", " "Mutex operation timed out.", } , [(AWS_ERROR_MUTEX_CALLER_NOT_OWNER)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_CALLER_NOT_OWNER", .error_code = (AWS_ERROR_MUTEX_CALLER_NOT_OWNER), .error_str = ("The caller of a mutex operation was not the owner."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_CALLER_NOT_OWNER" ", " "The caller of a mutex operation was not the owner.", } , [(AWS_ERROR_MUTEX_FAILED)-0x0000] = { .literal_name = "AWS_ERROR_MUTEX_FAILED", .error_code = (AWS_ERROR_MUTEX_FAILED), .error_str = ("Mutex operation failed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MUTEX_FAILED" ", " "Mutex operation failed.", } , [(AWS_ERROR_COND_VARIABLE_INIT_FAILED)-0x0000] = { .literal_name = "AWS_ERROR_COND_VARIABLE_INIT_FAILED", .error_code = (AWS_ERROR_COND_VARIABLE_INIT_FAILED), .error_str = ("Condition variable initialization failed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_COND_VARIABLE_INIT_FAILED" ", " "Condition variable initialization failed.", } , [(AWS_ERROR_COND_VARIABLE_TIMED_OUT)-0x0000] = { .literal_name = "AWS_ERROR_COND_VARIABLE_TIMED_OUT", .error_code = (AWS_ERROR_COND_VARIABLE_TIMED_OUT), .error_str = ("Condition variable wait timed out."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_COND_VARIABLE_TIMED_OUT" ", " "Condition variable wait timed out.", } , [(AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN)-0x0000] = { .literal_name = "AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN", .error_code = (AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN), .error_str = ("Condition variable unknown error."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_COND_VARIABLE_ERROR_UNKNOWN" ", " "Condition variable unknown error.", } , [(AWS_ERROR_CLOCK_FAILURE)-0x0000] = { .literal_name = "AWS_ERROR_CLOCK_FAILURE", .error_code = (AWS_ERROR_CLOCK_FAILURE), .error_str = ("Clock operation failed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_CLOCK_FAILURE" ", " "Clock operation failed.", } , [(AWS_ERROR_LIST_EMPTY)-0x0000] = { .literal_name = "AWS_ERROR_LIST_EMPTY", .error_code = (AWS_ERROR_LIST_EMPTY), .error_str = ("Empty list."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_LIST_EMPTY" ", " "Empty list.", } , [(AWS_ERROR_DEST_COPY_TOO_SMALL)-0x0000] = { .literal_name = "AWS_ERROR_DEST_COPY_TOO_SMALL", .error_code = (AWS_ERROR_DEST_COPY_TOO_SMALL), .error_str = ("Destination of copy is too small."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_DEST_COPY_TOO_SMALL" ", " "Destination of copy is too small.", } , [(AWS_ERROR_LIST_EXCEEDS_MAX_SIZE)-0x0000] = { .literal_name = "AWS_ERROR_LIST_EXCEEDS_MAX_SIZE", .error_code = (AWS_ERROR_LIST_EXCEEDS_MAX_SIZE), .error_str = ("A requested operation on a list would exceed it's max size."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_LIST_EXCEEDS_MAX_SIZE" ", " "A requested operation on a list would exceed it's max size.", } , [(AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK)-0x0000] = { .literal_name = "AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK", .error_code = (AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK), .error_str = ("Attempt to shrink a list in static mode."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_LIST_STATIC_MODE_CANT_SHRINK" ", " "Attempt to shrink a list in static mode.", } , [(AWS_ERROR_PRIORITY_QUEUE_FULL)-0x0000] = { .literal_name = "AWS_ERROR_PRIORITY_QUEUE_FULL", .error_code = (AWS_ERROR_PRIORITY_QUEUE_FULL), .error_str = ("Attempt to add items to a full preallocated queue in static mode."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_PRIORITY_QUEUE_FULL" ", " "Attempt to add items to a full preallocated queue in static mode.", } , [(AWS_ERROR_PRIORITY_QUEUE_EMPTY)-0x0000] = { .literal_name = "AWS_ERROR_PRIORITY_QUEUE_EMPTY", .error_code = (AWS_ERROR_PRIORITY_QUEUE_EMPTY), .error_str = ("Attempt to pop an item from an empty queue."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_PRIORITY_QUEUE_EMPTY" ", " "Attempt to pop an item from an empty queue.", } , [(AWS_ERROR_PRIORITY_QUEUE_BAD_NODE)-0x0000] = { .literal_name = "AWS_ERROR_PRIORITY_QUEUE_BAD_NODE", .error_code = (AWS_ERROR_PRIORITY_QUEUE_BAD_NODE), .error_str = ("Bad node handle passed to remove."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_PRIORITY_QUEUE_BAD_NODE" ", " "Bad node handle passed to remove.", } , [(AWS_ERROR_HASHTBL_ITEM_NOT_FOUND)-0x0000] = { .literal_name = "AWS_ERROR_HASHTBL_ITEM_NOT_FOUND", .error_code = (AWS_ERROR_HASHTBL_ITEM_NOT_FOUND), .error_str = ("Item not found in hash table."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_HASHTBL_ITEM_NOT_FOUND" ", " "Item not found in hash table.", } , [(AWS_ERROR_INVALID_DATE_STR)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_DATE_STR", .error_code = (AWS_ERROR_INVALID_DATE_STR), .error_str = ("Date string is invalid and cannot be parsed."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_DATE_STR" ", " "Date string is invalid and cannot be parsed.", } , [(AWS_ERROR_INVALID_ARGUMENT)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_ARGUMENT", .error_code = (AWS_ERROR_INVALID_ARGUMENT), .error_str = ("An invalid argument was passed to a function."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_ARGUMENT" ", " "An invalid argument was passed to a function.", } , [(AWS_ERROR_RANDOM_GEN_FAILED)-0x0000] = { .literal_name = "AWS_ERROR_RANDOM_GEN_FAILED", .error_code = (AWS_ERROR_RANDOM_GEN_FAILED), .error_str = ("A call to the random number generator failed. Retry later."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_RANDOM_GEN_FAILED" ", " "A call to the random number generator failed. Retry later.", } , [(AWS_ERROR_MALFORMED_INPUT_STRING)-0x0000] = { .literal_name = "AWS_ERROR_MALFORMED_INPUT_STRING", .error_code = (AWS_ERROR_MALFORMED_INPUT_STRING), .error_str = ("An input string was passed to a parser and the string was incorrectly formatted."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MALFORMED_INPUT_STRING" ", " "An input string was passed to a parser and the string was incorrectly formatted.", } , [(AWS_ERROR_UNIMPLEMENTED)-0x0000] = { .literal_name = "AWS_ERROR_UNIMPLEMENTED", .error_code = (AWS_ERROR_UNIMPLEMENTED), .error_str = ("A function was called, but is not implemented."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_UNIMPLEMENTED" ", " "A function was called, but is not implemented.", } , [(AWS_ERROR_INVALID_STATE)-0x0000] = { .literal_name = "AWS_ERROR_INVALID_STATE", .error_code = (AWS_ERROR_INVALID_STATE), .error_str = ("An invalid state was encountered."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_INVALID_STATE" ", " "An invalid state was encountered.", } , [(AWS_ERROR_ENVIRONMENT_GET)-0x0000] = { .literal_name = "AWS_ERROR_ENVIRONMENT_GET", .error_code = (AWS_ERROR_ENVIRONMENT_GET), .error_str = ("System call failure when getting an environment variable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_ENVIRONMENT_GET" ", " "System call failure when getting an environment variable.", } , [(AWS_ERROR_ENVIRONMENT_SET)-0x0000] = { .literal_name = "AWS_ERROR_ENVIRONMENT_SET", .error_code = (AWS_ERROR_ENVIRONMENT_SET), .error_str = ("System call failure when setting an environment variable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_ENVIRONMENT_SET" ", " "System call failure when setting an environment variable.", } , [(AWS_ERROR_ENVIRONMENT_UNSET)-0x0000] = { .literal_name = "AWS_ERROR_ENVIRONMENT_UNSET", .error_code = (AWS_ERROR_ENVIRONMENT_UNSET), .error_str = ("System call failure when unsetting an environment variable."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_ENVIRONMENT_UNSET" ", " "System call failure when unsetting an environment variable.", } , [(AWS_ERROR_SYS_CALL_FAILURE)-0x0000] = { .literal_name = "AWS_ERROR_SYS_CALL_FAILURE", .error_code = (AWS_ERROR_SYS_CALL_FAILURE), .error_str = ("System call failure"), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_SYS_CALL_FAILURE" ", " "System call failure", } , [(AWS_ERROR_FILE_INVALID_PATH)-0x0000] = { .literal_name = "AWS_ERROR_FILE_INVALID_PATH", .error_code = (AWS_ERROR_FILE_INVALID_PATH), .error_str = ("Invalid file path."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_FILE_INVALID_PATH" ", " "Invalid file path.", } , [(AWS_ERROR_MAX_FDS_EXCEEDED)-0x0000] = { .literal_name = "AWS_ERROR_MAX_FDS_EXCEEDED", .error_code = (AWS_ERROR_MAX_FDS_EXCEEDED), .error_str = ("The maximum number of fds has been exceeded."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_MAX_FDS_EXCEEDED" ", " "The maximum number of fds has been exceeded.", } , [(AWS_ERROR_NO_PERMISSION)-0x0000] = { .literal_name = "AWS_ERROR_NO_PERMISSION", .error_code = (AWS_ERROR_NO_PERMISSION), .error_str = ("User does not have permission to perform the requested action."), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_NO_PERMISSION" ", " "User does not have permission to perform the requested action.", } , [(AWS_ERROR_STREAM_UNSEEKABLE)-0x0000] = { .literal_name = "AWS_ERROR_STREAM_UNSEEKABLE", .error_code = (AWS_ERROR_STREAM_UNSEEKABLE), .error_str = ("Stream does not support seek operations"), .lib_name = ("aws-c-common"), .formatted_name = "aws-c-common" ": " "AWS_ERROR_STREAM_UNSEEKABLE" ", " "Stream does not support seek operations", } , }; [L7938-L7941] static struct aws_error_info_list s_list = { .error_list = errors, .count = (sizeof(errors) / sizeof((errors)[0])), }; [L7943-L7952] static struct aws_log_subject_info s_common_log_subject_infos[] = { { .subject_id = (AWS_LS_COMMON_GENERAL), .subject_name = ("aws-c-common"), .subject_description = ("Subject for aws-c-common logging that doesn't belong to any particular category") } , { .subject_id = (AWS_LS_COMMON_TASK_SCHEDULER), .subject_name = ("task-scheduler"), .subject_description = ("Subject for task scheduler or task specific logging.") } , }; [L7954-L7957] static struct aws_log_subject_info_list s_common_log_subject_list = { .subject_list = s_common_log_subject_infos, .count = (sizeof(s_common_log_subject_infos) / sizeof((s_common_log_subject_infos)[0])), }; [L7959-L7963] static _Bool s_common_library_initialized = 0 ; [L8495] CALL aws_priority_queue_remove_harness() [L8450] struct aws_priority_queue queue; [L8453] CALL, EXPR aws_priority_queue_is_bounded(&queue, 9223372036854775808U, 2) [L6791] CALL, EXPR aws_array_list_is_bounded(&queue->container, max_initial_item_allocation, max_item_size) [L6735] EXPR list->item_size [L6734-L6735] _Bool item_size_is_bounded = list->item_size <= max_item_size; [L6738] EXPR list->length [L6737-L6738] _Bool length_is_bounded = list->length <= max_initial_item_allocation; [L6739] return item_size_is_bounded && length_is_bounded; [L6791] RET, EXPR aws_array_list_is_bounded(&queue->container, max_initial_item_allocation, max_item_size) [L6789-L6791] _Bool container_is_bounded = aws_array_list_is_bounded(&queue->container, max_initial_item_allocation, max_item_size); [L6798-L6799] CALL, EXPR aws_array_list_is_bounded( &queue->backpointers, max_initial_item_allocation, sizeof(struct aws_priority_queue_node *)) [L6735] EXPR list->item_size [L6734-L6735] _Bool item_size_is_bounded = list->item_size <= max_item_size; [L6738] EXPR list->length [L6737-L6738] _Bool length_is_bounded = list->length <= max_initial_item_allocation; [L6739] return item_size_is_bounded && length_is_bounded; [L6798-L6799] RET, EXPR aws_array_list_is_bounded( &queue->backpointers, max_initial_item_allocation, sizeof(struct aws_priority_queue_node *)) [L6797-L6799] _Bool backpointers_list_is_bounded = aws_array_list_is_bounded( &queue->backpointers, max_initial_item_allocation, sizeof(struct aws_priority_queue_node *)); [L6800] return container_is_bounded && backpointers_list_is_bounded; [L8453] RET, EXPR aws_priority_queue_is_bounded(&queue, 9223372036854775808U, 2) [L8453] CALL assume_abort_if_not(aws_priority_queue_is_bounded(&queue, 9223372036854775808U, 2)) [L211] COND FALSE !(!cond) [L8453] RET assume_abort_if_not(aws_priority_queue_is_bounded(&queue, 9223372036854775808U, 2)) [L8454] CALL ensure_priority_queue_has_allocated_members(&queue) [L6804] CALL ensure_array_list_has_allocated_data_member(&queue->container) [L6743] EXPR list->current_size [L6743] list->current_size == 0 && list->length == 0 [L6743] EXPR list->length [L6743] list->current_size == 0 && list->length == 0 [L6743] COND TRUE list->current_size == 0 && list->length == 0 [L6744] EXPR list->data [L6744-L6746] CALL assume_abort_if_not(list->data == ((void *)0) ) [L211] COND FALSE !(!cond) [L6744-L6746] RET assume_abort_if_not(list->data == ((void *)0) ) [L6747] CALL, EXPR can_fail_allocator() [L6939] return &s_can_fail_allocator_static; [L6747] RET, EXPR can_fail_allocator() [L6747] list->alloc = can_fail_allocator() [L6804] RET ensure_array_list_has_allocated_data_member(&queue->container) [L6805] CALL ensure_array_list_has_allocated_data_member(&queue->backpointers) [L6743] EXPR list->current_size [L6743] list->current_size == 0 && list->length == 0 [L6743] EXPR list->length [L6743] list->current_size == 0 && list->length == 0 [L6743] COND TRUE list->current_size == 0 && list->length == 0 [L6744] EXPR list->data [L6744-L6746] CALL assume_abort_if_not(list->data == ((void *)0) ) [L211] COND FALSE !(!cond) [L6744-L6746] RET assume_abort_if_not(list->data == ((void *)0) ) [L6747] CALL, EXPR can_fail_allocator() [L6939] return &s_can_fail_allocator_static; [L6747] RET, EXPR can_fail_allocator() [L6747] list->alloc = can_fail_allocator() [L6805] RET ensure_array_list_has_allocated_data_member(&queue->backpointers) [L6806] queue->pred = nondet_compare [L8454] RET ensure_priority_queue_has_allocated_members(&queue) [L8457] CALL, EXPR aws_priority_queue_is_valid(&queue) [L8279] COND FALSE !(!queue) [L8286] EXPR queue->pred [L8285-L8288] _Bool pred_is_valid = (queue->pred != ((void *)0) ); [L8291] CALL, EXPR aws_array_list_is_valid(&queue->container) [L2939] COND FALSE !(!list) [L2944] size_t required_size = 0; [L2948] EXPR list->length [L2948] EXPR list->item_size [L2948] CALL, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2590] CALL, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2498] CALL __CPROVER_overflow_mult(a, b) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); [L2498] RET __CPROVER_overflow_mult(a, b) [L2498] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2500] *r = a * b [L2501] return (0); [L2590] RET, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2590] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L2948] RET, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2946-L2948] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L2951] EXPR list->current_size [L2951] EXPR \read(required_size) [L2950-L2951] _Bool current_size_is_valid = (list->current_size >= required_size); [L2955] EXPR list->current_size [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955] EXPR list->data [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955-L2957] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L2953-L2957] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L2960] EXPR list->item_size [L2959-L2960] _Bool item_size_is_valid = (list->item_size != 0); [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L2944] size_t required_size = 0; [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L8291] RET, EXPR aws_array_list_is_valid(&queue->container) [L8290-L8291] _Bool container_is_valid = aws_array_list_is_valid(&queue->container); [L8295] CALL, EXPR aws_priority_queue_backpointers_valid(queue) [L8220] COND FALSE !(!queue) [L8230] CALL, EXPR aws_array_list_is_valid(&queue->backpointers) [L2939] COND FALSE !(!list) [L2944] size_t required_size = 0; [L2948] EXPR list->length [L2948] EXPR list->item_size [L2948] CALL, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2590] CALL, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2498] CALL __CPROVER_overflow_mult(a, b) [L254] unsigned long c; [L255] return __builtin_umull_overflow(a, b, &c); [L255] return __builtin_umull_overflow(a, b, &c); [L2498] RET __CPROVER_overflow_mult(a, b) [L2498] COND FALSE !(__CPROVER_overflow_mult(a, b)) [L2500] *r = a * b [L2501] return (0); [L2590] RET, EXPR aws_mul_u64_checked(a, b, (uint64_t *)r) [L2590] return aws_mul_u64_checked(a, b, (uint64_t *)r); [L2948] RET, EXPR aws_mul_size_checked(list->length, list->item_size, &required_size) [L2946-L2948] _Bool required_size_is_valid = (aws_mul_size_checked(list->length, list->item_size, &required_size) == (0)); [L2951] EXPR list->current_size [L2951] EXPR \read(required_size) [L2950-L2951] _Bool current_size_is_valid = (list->current_size >= required_size); [L2955] EXPR list->current_size [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955] EXPR list->data [L2955-L2956] EXPR list->current_size == 0 && list->data == ((void *)0) [L2955-L2957] EXPR (list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data))) [L2953-L2957] _Bool data_is_valid = ((list->current_size == 0 && list->data == ((void *)0) ) || ((((list->current_size)) == 0) || ((list->data)))); [L2960] EXPR list->item_size [L2959-L2960] _Bool item_size_is_valid = (list->item_size != 0); [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L2944] size_t required_size = 0; [L2961] return required_size_is_valid && current_size_is_valid && data_is_valid && item_size_is_valid; [L8230] RET, EXPR aws_array_list_is_valid(&queue->backpointers) [L8230] EXPR aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) [L8230] EXPR queue->backpointers.current_size [L8230] EXPR aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) [L8230-L8233] EXPR aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) && (queue->backpointers.data != ((void *)0) ) [L8231] EXPR queue->backpointers.data [L8230-L8233] EXPR aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) && (queue->backpointers.data != ((void *)0) ) [L8228-L8233] _Bool backpointer_list_is_valid = ((aws_array_list_is_valid(&queue->backpointers) && (queue->backpointers.current_size != 0) && (queue->backpointers.data != ((void *)0) ))); [L8241] EXPR queue->backpointers.item_size [L8240-L8241] _Bool backpointer_list_item_size = queue->backpointers.item_size == sizeof(struct aws_priority_queue_node *); [L8244] EXPR queue->backpointers.length [L8244] EXPR queue->container.length [L8243-L8244] _Bool lists_equal_lengths = queue->backpointers.length == queue->container.length; [L8247] EXPR queue->backpointers.current_size [L8246-L8247] _Bool backpointers_non_zero_current_size = queue->backpointers.current_size > 0; [L8255-L8258] _Bool backpointers_valid_deep = 1 ; [L8263] EXPR queue->backpointers.current_size [L8263] EXPR queue->backpointers.current_size == 0 && queue->backpointers.length == 0 [L8263] EXPR queue->backpointers.length [L8263] EXPR queue->backpointers.current_size == 0 && queue->backpointers.length == 0 [L8263-L8264] EXPR queue->backpointers.current_size == 0 && queue->backpointers.length == 0 && queue->backpointers.data == ((void *)0) [L8263] EXPR queue->backpointers.data [L8263-L8264] EXPR queue->backpointers.current_size == 0 && queue->backpointers.length == 0 && queue->backpointers.data == ((void *)0) [L8261-L8265] _Bool backpointers_zero = (queue->backpointers.current_size == 0 && queue->backpointers.length == 0 && queue->backpointers.data == ((void *)0) ); [L8267-L8270] _Bool backpointer_struct_is_valid = backpointers_zero || (backpointer_list_item_size && lists_equal_lengths && backpointers_non_zero_current_size && backpointers_valid_deep); [L8272] EXPR (backpointer_list_is_valid && backpointer_struct_is_valid) || aws_is_mem_zeroed(&(queue->backpointers), sizeof(queue->backpointers)) [L8272] return ((backpointer_list_is_valid && backpointer_struct_is_valid) || aws_is_mem_zeroed(&(queue->backpointers), sizeof(queue->backpointers))); [L8295] RET, EXPR aws_priority_queue_backpointers_valid(queue) [L8294-L8295] _Bool backpointers_valid = aws_priority_queue_backpointers_valid(queue); [L8296] return pred_is_valid && container_is_valid && backpointers_valid; [L8457] RET, EXPR aws_priority_queue_is_valid(&queue) [L8457] CALL assume_abort_if_not(aws_priority_queue_is_valid(&queue)) [L211] COND FALSE !(!cond) [L8457] RET assume_abort_if_not(aws_priority_queue_is_valid(&queue)) [L8458] EXPR queue.container.item_size [L8458] CALL, EXPR can_fail_malloc(queue.container.item_size) [L6949] CALL, EXPR nondet_bool() [L261] return __VERIFIER_nondet_bool(); [L6949] RET, EXPR nondet_bool() [L6949-L6951] EXPR nondet_bool() ? ((void *)0) : bounded_malloc(size) [L6949-L6951] return nondet_bool() ? ((void *)0) : bounded_malloc(size); [L8458] RET, EXPR can_fail_malloc(queue.container.item_size) [L8458] void *item = can_fail_malloc(queue.container.item_size); [L8459] CALL, EXPR can_fail_malloc(sizeof(struct aws_priority_queue_node)) [L6949] CALL, EXPR nondet_bool() [L261] return __VERIFIER_nondet_bool(); [L6949] RET, EXPR nondet_bool() [L6949-L6951] EXPR nondet_bool() ? ((void *)0) : bounded_malloc(size) [L6949-L6951] return nondet_bool() ? ((void *)0) : bounded_malloc(size); [L8459] RET, EXPR can_fail_malloc(sizeof(struct aws_priority_queue_node)) [L8459] struct aws_priority_queue_node *backpointer = can_fail_malloc(sizeof(struct aws_priority_queue_node)); [L8461] EXPR queue.backpointers.data [L8461] COND FALSE !(queue.backpointers.data && backpointer) [L8478] struct aws_priority_queue old_queue = queue; [L8481] EXPR item && ((((queue.container.item_size)) == 0) || ((item))) [L8481] EXPR queue.container.item_size [L8481] EXPR item && ((((queue.container.item_size)) == 0) || ((item))) [L8481] CALL assume_abort_if_not(item && ((((queue.container.item_size)) == 0) || ((item)))) [L211] COND FALSE !(!cond) [L8481] RET assume_abort_if_not(item && ((((queue.container.item_size)) == 0) || ((item)))) [L8482] CALL assume_abort_if_not(backpointer && ((((sizeof(struct aws_priority_queue_node))) == 0) || ((backpointer)))) [L211] COND FALSE !(!cond) [L8482] RET assume_abort_if_not(backpointer && ((((sizeof(struct aws_priority_queue_node))) == 0) || ((backpointer)))) [L8485] CALL aws_priority_queue_remove(&queue, item, backpointer) [L8414] CALL, EXPR aws_priority_queue_is_valid(queue) [L8279] COND TRUE !queue [L8280-L8282] return 0 ; [L8414] RET, EXPR aws_priority_queue_is_valid(queue) [L8414] CALL assume_abort_if_not((aws_priority_queue_is_valid(queue))) [L211] COND FALSE !(!cond) [L8414] RET assume_abort_if_not((aws_priority_queue_is_valid(queue))) [L8415] EXPR item && ((((queue->container.item_size)) == 0) || ((item))) [L8415] CALL assume_abort_if_not((item && ((((queue->container.item_size)) == 0) || ((item))))) [L211] COND FALSE !(!cond) [L8415] RET assume_abort_if_not((item && ((((queue->container.item_size)) == 0) || ((item))))) [L8416] CALL assume_abort_if_not((node && ((((sizeof(struct aws_priority_queue_node))) == 0) || ((node))))) [L211] COND FALSE !(!cond) [L8416] RET assume_abort_if_not((node && ((((sizeof(struct aws_priority_queue_node))) == 0) || ((node))))) [L8417] node->current_index [L8417] CALL aws_array_list_length(&queue->container) [L3169] EXPR list->length [L3169] EXPR !list->length || list->data [L3169] CALL assume_abort_if_not((!list->length || list->data)) [L211] COND FALSE !(!cond) [L3169] RET assume_abort_if_not((!list->length || list->data)) [L3170] CALL, EXPR aws_array_list_is_valid(list) [L2939] COND TRUE !list [L2940-L2942] return 0 ; [L3170] RET, EXPR aws_array_list_is_valid(list) [L3170] CALL assume_abort_if_not((aws_array_list_is_valid(list))) [L211] COND FALSE !(!cond) [L3170] RET assume_abort_if_not((aws_array_list_is_valid(list))) [L3171] EXPR list->length [L3171] size_t len = list->length; [L3172] CALL, EXPR aws_array_list_is_valid(list) [L2939] COND TRUE !list [L2940-L2942] return 0 ; [L3172] RET, EXPR aws_array_list_is_valid(list) [L3172] CALL __VERIFIER_assert((aws_array_list_is_valid(list))) [L223] COND TRUE !cond [L223] reach_error() - UnprovableResult [Line: 233]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 28 procedures, 460 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 43.0s, OverallIterations: 6, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3596 SdHoareTripleChecker+Valid, 13.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3336 mSDsluCounter, 13571 SdHoareTripleChecker+Invalid, 12.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10433 mSDsCounter, 993 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2829 IncrementalHoareTripleChecker+Invalid, 3822 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 993 mSolverCounterUnsat, 3138 mSDtfsCounter, 2829 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 881 GetRequests, 820 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=474occurred in iteration=3, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 470 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 2.7s SatisfiabilityAnalysisTime, 22.6s InterpolantComputationTime, 1365 NumberOfCodeBlocks, 1365 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1148 ConstructedInterpolants, 0 QuantifiedInterpolants, 1811 SizeOfPredicates, 14 NumberOfNonLiveVariables, 12435 ConjunctsInSsa, 251 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 1716/1728 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 06:15:53,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/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_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:15:55,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:15:55,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:15:55,560 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:15:55,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:15:55,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:15:55,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:15:55,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:15:55,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:15:55,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:15:55,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:15:55,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:15:55,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:15:55,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:15:55,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:15:55,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:15:55,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:15:55,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:15:55,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:15:55,602 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:15:55,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:15:55,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:15:55,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:15:55,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:15:55,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:15:55,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:15:55,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:15:55,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:15:55,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:15:55,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:15:55,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:15:55,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:15:55,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:15:55,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:15:55,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:15:55,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:15:55,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:15:55,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:15:55,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:15:55,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:15:55,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:15:55,639 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-11-20 06:15:55,687 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:15:55,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:15:55,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:15:55,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:15:55,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:15:55,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:15:55,692 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:15:55,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:15:55,692 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:15:55,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:15:55,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:15:55,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:15:55,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:15:55,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:15:55,695 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 06:15:55,696 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 06:15:55,696 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 06:15:55,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:15:55,696 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:15:55,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:15:55,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:15:55,697 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:15:55,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:15:55,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:15:55,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:15:55,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:15:55,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:15:55,699 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 06:15:55,699 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 06:15:55,699 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:15:55,700 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:15:55,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:15:55,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:15:55,701 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 06:15:55,701 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_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2021-11-20 06:15:56,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:15:56,133 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:15:56,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:15:56,137 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:15:56,143 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:15:56,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-20 06:15:56,221 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/data/719e9a0b7/73530a8861ee4686bb10471ab20fbf0a/FLAG74f5c8b51 [2021-11-20 06:15:57,237 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:15:57,238 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2021-11-20 06:15:57,279 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/data/719e9a0b7/73530a8861ee4686bb10471ab20fbf0a/FLAG74f5c8b51 [2021-11-20 06:15:57,297 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/data/719e9a0b7/73530a8861ee4686bb10471ab20fbf0a [2021-11-20 06:15:57,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:15:57,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:15:57,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:15:57,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:15:57,309 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:15:57,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:15:57" (1/1) ... [2021-11-20 06:15:57,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1e234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:15:57, skipping insertion in model container [2021-11-20 06:15:57,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:15:57" (1/1) ... [2021-11-20 06:15:57,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:15:57,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:15:57,776 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_64e81701-4f22-4f96-819f-30e026a7ceb8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-20 06:15:57,783 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_64e81701-4f22-4f96-819f-30e026a7ceb8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-20 06:15:58,910 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:58,910 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:58,911 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:58,912 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:58,914 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:58,930 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:58,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:58,934 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:58,935 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:58,937 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:58,939 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:58,940 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:58,940 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,365 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 06:15:59,367 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 06:15:59,368 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 06:15:59,370 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 06:15:59,371 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 06:15:59,389 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 06:15:59,390 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 06:15:59,391 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 06:15:59,402 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 06:15:59,403 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 06:15:59,580 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 06:15:59,612 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,620 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,697 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,698 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,699 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,699 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,700 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,700 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,705 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,706 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,707 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,715 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,721 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,730 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,737 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,739 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,752 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,762 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,763 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:15:59,821 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 06:15:59,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:15:59,917 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_64e81701-4f22-4f96-819f-30e026a7ceb8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-20 06:15:59,920 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_64e81701-4f22-4f96-819f-30e026a7ceb8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-20 06:15:59,975 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,976 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,976 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,977 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,977 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,985 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,986 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,987 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,988 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,988 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,989 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:15:59,989 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,025 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 06:16:00,026 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 06:16:00,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 06:16:00,027 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 06:16:00,028 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 06:16:00,031 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 06:16:00,031 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 06:16:00,033 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 06:16:00,034 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 06:16:00,034 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 06:16:00,080 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 06:16:00,103 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,108 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,165 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,166 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,167 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,168 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,169 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,170 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,171 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,171 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,172 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,172 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,174 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,174 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,175 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,175 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,194 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,195 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,196 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,208 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,209 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,209 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:16:00,239 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:16:00,252 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_64e81701-4f22-4f96-819f-30e026a7ceb8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2021-11-20 06:16:00,252 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_64e81701-4f22-4f96-819f-30e026a7ceb8/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2021-11-20 06:16:00,283 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,284 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,284 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,285 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,285 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,291 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,291 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,292 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,293 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,294 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,294 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,295 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,295 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,353 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-20 06:16:00,353 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-20 06:16:00,354 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-20 06:16:00,355 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-20 06:16:00,356 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-20 06:16:00,356 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-20 06:16:00,357 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-20 06:16:00,358 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-20 06:16:00,358 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-20 06:16:00,359 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-20 06:16:00,389 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-20 06:16:00,408 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,413 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,454 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,457 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,458 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,458 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,458 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,459 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,459 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,461 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,462 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,465 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,465 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,466 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,467 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,468 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,475 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,476 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,487 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,498 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,499 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,499 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-20 06:16:00,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:16:00,748 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:16:00,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:00 WrapperNode [2021-11-20 06:16:00,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:16:00,750 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:16:00,750 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:16:00,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:16:00,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:00" (1/1) ... [2021-11-20 06:16:00,888 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:00" (1/1) ... [2021-11-20 06:16:00,982 INFO L137 Inliner]: procedures = 717, calls = 1921, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1041 [2021-11-20 06:16:00,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:16:00,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:16:00,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:16:00,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:16:00,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:00" (1/1) ... [2021-11-20 06:16:01,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:00" (1/1) ... [2021-11-20 06:16:01,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:00" (1/1) ... [2021-11-20 06:16:01,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:00" (1/1) ... [2021-11-20 06:16:01,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:00" (1/1) ... [2021-11-20 06:16:01,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:00" (1/1) ... [2021-11-20 06:16:01,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:00" (1/1) ... [2021-11-20 06:16:01,171 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:16:01,172 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:16:01,172 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:16:01,172 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:16:01,173 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:00" (1/1) ... [2021-11-20 06:16:01,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:16:01,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:16:01,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:16:01,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:16:01,260 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-20 06:16:01,260 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-20 06:16:01,260 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-20 06:16:01,261 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-20 06:16:01,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:16:01,261 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-20 06:16:01,261 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-20 06:16:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-20 06:16:01,262 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-20 06:16:01,262 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-20 06:16:01,262 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-20 06:16:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 06:16:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-20 06:16:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-20 06:16:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-20 06:16:01,263 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-20 06:16:01,263 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-20 06:16:01,263 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-20 06:16:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-20 06:16:01,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-20 06:16:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2021-11-20 06:16:01,264 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2021-11-20 06:16:01,264 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-20 06:16:01,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2021-11-20 06:16:01,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 06:16:01,265 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:16:01,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 06:16:01,266 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-20 06:16:01,266 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-20 06:16:01,267 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-20 06:16:01,268 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-20 06:16:01,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:16:01,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:16:01,268 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-20 06:16:01,268 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-20 06:16:01,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-20 06:16:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-20 06:16:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-20 06:16:01,269 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-20 06:16:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-20 06:16:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-20 06:16:01,269 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-20 06:16:01,269 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-20 06:16:01,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-20 06:16:01,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-20 06:16:01,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-20 06:16:01,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-20 06:16:01,270 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-20 06:16:01,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-20 06:16:01,270 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-20 06:16:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-20 06:16:01,271 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-20 06:16:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2021-11-20 06:16:01,271 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2021-11-20 06:16:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:16:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 06:16:01,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-20 06:16:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 06:16:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-20 06:16:01,272 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-20 06:16:01,272 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-20 06:16:01,273 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-20 06:16:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-20 06:16:01,273 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-20 06:16:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-20 06:16:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-20 06:16:01,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-20 06:16:01,273 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 06:16:01,274 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-20 06:16:01,274 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2021-11-20 06:16:01,274 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2021-11-20 06:16:01,798 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:16:01,801 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:16:07,204 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:16:07,217 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:16:07,217 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-20 06:16:07,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:16:07 BoogieIcfgContainer [2021-11-20 06:16:07,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:16:07,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:16:07,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:16:07,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:16:07,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:15:57" (1/3) ... [2021-11-20 06:16:07,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cfa5640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:16:07, skipping insertion in model container [2021-11-20 06:16:07,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:16:00" (2/3) ... [2021-11-20 06:16:07,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cfa5640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:16:07, skipping insertion in model container [2021-11-20 06:16:07,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:16:07" (3/3) ... [2021-11-20 06:16:07,229 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2021-11-20 06:16:07,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:16:07,235 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 06:16:07,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:16:07,301 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 06:16:07,302 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 06:16:07,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 456 states, 266 states have (on average 1.2744360902255638) internal successors, (339), 271 states have internal predecessors, (339), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-20 06:16:07,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-20 06:16:07,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:07,356 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, 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] [2021-11-20 06:16:07,356 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:07,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:07,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1226682489, now seen corresponding path program 1 times [2021-11-20 06:16:07,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:16:07,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1447412433] [2021-11-20 06:16:07,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:07,383 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:16:07,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:16:07,387 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:16:07,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 06:16:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:08,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-20 06:16:08,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-20 06:16:08,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:08,982 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-11-20 06:16:08,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:16:08,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1447412433] [2021-11-20 06:16:08,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1447412433] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:16:08,985 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:16:08,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 06:16:08,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336724938] [2021-11-20 06:16:08,987 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:08,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-20 06:16:08,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:16:09,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-20 06:16:09,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:16:09,041 INFO L87 Difference]: Start difference. First operand has 456 states, 266 states have (on average 1.2744360902255638) internal successors, (339), 271 states have internal predecessors, (339), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-20 06:16:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:09,188 INFO L93 Difference]: Finished difference Result 899 states and 1432 transitions. [2021-11-20 06:16:09,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-20 06:16:09,191 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 141 [2021-11-20 06:16:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:09,213 INFO L225 Difference]: With dead ends: 899 [2021-11-20 06:16:09,213 INFO L226 Difference]: Without dead ends: 449 [2021-11-20 06:16:09,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-20 06:16:09,230 INFO L933 BasicCegarLoop]: 646 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, 646 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 [2021-11-20 06:16:09,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 06:16:09,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-20 06:16:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2021-11-20 06:16:09,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 261 states have (on average 1.2375478927203065) internal successors, (323), 264 states have internal predecessors, (323), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2021-11-20 06:16:09,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 641 transitions. [2021-11-20 06:16:09,377 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 641 transitions. Word has length 141 [2021-11-20 06:16:09,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:09,379 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 641 transitions. [2021-11-20 06:16:09,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-11-20 06:16:09,379 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 641 transitions. [2021-11-20 06:16:09,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-11-20 06:16:09,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:09,385 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:09,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:09,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:16:09,609 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:09,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:09,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1411277843, now seen corresponding path program 1 times [2021-11-20 06:16:09,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:16:09,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1897288244] [2021-11-20 06:16:09,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:09,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:16:09,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:16:09,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:16:09,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 06:16:10,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:10,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:16:10,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-20 06:16:11,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:11,905 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2021-11-20 06:16:11,906 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:16:11,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1897288244] [2021-11-20 06:16:11,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1897288244] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:11,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:16:11,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-20 06:16:11,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568027343] [2021-11-20 06:16:11,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:11,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:16:11,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:16:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:16:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:16:11,909 INFO L87 Difference]: Start difference. First operand 449 states and 641 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 06:16:14,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:14,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:14,778 INFO L93 Difference]: Finished difference Result 864 states and 1251 transitions. [2021-11-20 06:16:14,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:16:14,779 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 156 [2021-11-20 06:16:14,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:14,788 INFO L225 Difference]: With dead ends: 864 [2021-11-20 06:16:14,788 INFO L226 Difference]: Without dead ends: 451 [2021-11-20 06:16:14,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:16:14,793 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 36 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2378 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 [2021-11-20 06:16:14,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2378 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2021-11-20 06:16:14,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-20 06:16:14,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2021-11-20 06:16:14,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 262 states have (on average 1.2366412213740459) internal successors, (324), 266 states have internal predecessors, (324), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (172), 158 states have call predecessors, (172), 158 states have call successors, (172) [2021-11-20 06:16:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 656 transitions. [2021-11-20 06:16:14,856 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 656 transitions. Word has length 156 [2021-11-20 06:16:14,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:14,859 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 656 transitions. [2021-11-20 06:16:14,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-11-20 06:16:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 656 transitions. [2021-11-20 06:16:14,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-20 06:16:14,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:14,866 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:14,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:15,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:16:15,089 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:15,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:15,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1659857565, now seen corresponding path program 1 times [2021-11-20 06:16:15,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:16:15,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1865871034] [2021-11-20 06:16:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:15,093 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:16:15,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:16:15,096 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:16:15,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 06:16:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:16,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:16:16,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:17,048 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-20 06:16:17,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2021-11-20 06:16:18,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:16:18,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1865871034] [2021-11-20 06:16:18,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1865871034] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:18,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:16:18,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-20 06:16:18,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816752671] [2021-11-20 06:16:18,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:18,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:16:18,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:16:18,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:16:18,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:16:18,080 INFO L87 Difference]: Start difference. First operand 451 states and 656 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 06:16:20,787 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:21,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:21,939 INFO L93 Difference]: Finished difference Result 887 states and 1324 transitions. [2021-11-20 06:16:21,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:16:21,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 164 [2021-11-20 06:16:21,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:21,946 INFO L225 Difference]: With dead ends: 887 [2021-11-20 06:16:21,946 INFO L226 Difference]: Without dead ends: 472 [2021-11-20 06:16:21,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:16:21,950 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 87 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 3442 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 [2021-11-20 06:16:21,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 3442 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 336 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-11-20 06:16:21,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-20 06:16:21,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 470. [2021-11-20 06:16:21,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 278 states have (on average 1.2446043165467626) internal successors, (346), 282 states have internal predecessors, (346), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (191), 161 states have call predecessors, (191), 160 states have call successors, (191) [2021-11-20 06:16:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 699 transitions. [2021-11-20 06:16:22,000 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 699 transitions. Word has length 164 [2021-11-20 06:16:22,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:22,002 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 699 transitions. [2021-11-20 06:16:22,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2021-11-20 06:16:22,002 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 699 transitions. [2021-11-20 06:16:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-20 06:16:22,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:22,007 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:22,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:22,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:16:22,221 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:22,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:22,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1958921511, now seen corresponding path program 1 times [2021-11-20 06:16:22,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:16:22,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936840714] [2021-11-20 06:16:22,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:22,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:16:22,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:16:22,225 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:16:22,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 06:16:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:23,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:16:23,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:24,002 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-11-20 06:16:24,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:24,959 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2021-11-20 06:16:24,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:16:24,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936840714] [2021-11-20 06:16:24,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1936840714] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:24,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:16:24,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-20 06:16:24,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979085731] [2021-11-20 06:16:24,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:24,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:16:24,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:16:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:16:24,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:16:24,962 INFO L87 Difference]: Start difference. First operand 470 states and 699 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-20 06:16:27,566 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:28,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:28,581 INFO L93 Difference]: Finished difference Result 912 states and 1399 transitions. [2021-11-20 06:16:28,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 06:16:28,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 179 [2021-11-20 06:16:28,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:28,588 INFO L225 Difference]: With dead ends: 912 [2021-11-20 06:16:28,588 INFO L226 Difference]: Without dead ends: 478 [2021-11-20 06:16:28,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:16:28,593 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 59 mSDsluCounter, 2326 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 2936 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 [2021-11-20 06:16:28,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 2936 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 254 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-20 06:16:28,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-20 06:16:28,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 470. [2021-11-20 06:16:28,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 278 states have (on average 1.2446043165467626) internal successors, (346), 282 states have internal predecessors, (346), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (191), 161 states have call predecessors, (191), 160 states have call successors, (191) [2021-11-20 06:16:28,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 699 transitions. [2021-11-20 06:16:28,626 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 699 transitions. Word has length 179 [2021-11-20 06:16:28,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:28,626 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 699 transitions. [2021-11-20 06:16:28,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-11-20 06:16:28,627 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 699 transitions. [2021-11-20 06:16:28,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-20 06:16:28,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:28,630 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:28,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:28,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:16:28,845 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:28,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:28,845 INFO L85 PathProgramCache]: Analyzing trace with hash 110275706, now seen corresponding path program 1 times [2021-11-20 06:16:28,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:16:28,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143790369] [2021-11-20 06:16:28,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:28,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:16:28,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:16:28,848 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:16:28,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 06:16:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:29,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1566 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:16:29,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-11-20 06:16:31,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-11-20 06:16:32,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:16:32,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143790369] [2021-11-20 06:16:32,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143790369] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:32,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:16:32,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2021-11-20 06:16:32,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676554972] [2021-11-20 06:16:32,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:32,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:16:32,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:16:32,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:16:32,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:16:32,486 INFO L87 Difference]: Start difference. First operand 470 states and 699 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-20 06:16:35,994 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:37,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:37,881 INFO L93 Difference]: Finished difference Result 934 states and 1418 transitions. [2021-11-20 06:16:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 06:16:37,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 195 [2021-11-20 06:16:37,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:37,890 INFO L225 Difference]: With dead ends: 934 [2021-11-20 06:16:37,890 INFO L226 Difference]: Without dead ends: 500 [2021-11-20 06:16:37,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-20 06:16:37,896 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 131 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 17 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 4000 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:37,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 4000 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 569 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-20 06:16:37,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2021-11-20 06:16:37,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 482. [2021-11-20 06:16:37,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 288 states have (on average 1.25) internal successors, (360), 292 states have internal predecessors, (360), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (192), 162 states have call predecessors, (192), 161 states have call successors, (192) [2021-11-20 06:16:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 715 transitions. [2021-11-20 06:16:37,932 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 715 transitions. Word has length 195 [2021-11-20 06:16:37,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:37,933 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 715 transitions. [2021-11-20 06:16:37,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2021-11-20 06:16:37,934 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 715 transitions. [2021-11-20 06:16:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-20 06:16:37,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:37,938 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:37,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:38,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:16:38,153 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:38,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:38,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2030385312, now seen corresponding path program 2 times [2021-11-20 06:16:38,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:16:38,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903730159] [2021-11-20 06:16:38,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:16:38,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:16:38,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:16:38,157 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:16:38,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 06:16:40,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:16:40,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:16:40,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 06:16:40,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-20 06:16:41,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-20 06:16:42,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:16:42,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903730159] [2021-11-20 06:16:42,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [903730159] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:42,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:16:42,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2021-11-20 06:16:42,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142671407] [2021-11-20 06:16:42,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:42,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 06:16:42,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:16:42,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 06:16:42,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:16:42,830 INFO L87 Difference]: Start difference. First operand 482 states and 715 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 06:16:47,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:49,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:51,579 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:16:54,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:16:54,354 INFO L93 Difference]: Finished difference Result 964 states and 1492 transitions. [2021-11-20 06:16:54,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:16:54,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 210 [2021-11-20 06:16:54,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:16:54,363 INFO L225 Difference]: With dead ends: 964 [2021-11-20 06:16:54,363 INFO L226 Difference]: Without dead ends: 518 [2021-11-20 06:16:54,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:16:54,369 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 21 mSDsluCounter, 2378 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:16:54,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 3029 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 260 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2021-11-20 06:16:54,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-11-20 06:16:54,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 490. [2021-11-20 06:16:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 296 states have (on average 1.25) internal successors, (370), 300 states have internal predecessors, (370), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (192), 162 states have call predecessors, (192), 161 states have call successors, (192) [2021-11-20 06:16:54,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 725 transitions. [2021-11-20 06:16:54,402 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 725 transitions. Word has length 210 [2021-11-20 06:16:54,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:16:54,403 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 725 transitions. [2021-11-20 06:16:54,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 06:16:54,403 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 725 transitions. [2021-11-20 06:16:54,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-20 06:16:54,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:16:54,407 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:16:54,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 06:16:54,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:16:54,633 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:16:54,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:16:54,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1911943838, now seen corresponding path program 1 times [2021-11-20 06:16:54,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:16:54,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352242318] [2021-11-20 06:16:54,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:16:54,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:16:54,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:16:54,636 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:16:54,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 06:16:55,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:16:55,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1644 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:16:55,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:16:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2021-11-20 06:16:57,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:16:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-11-20 06:16:58,965 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:16:58,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352242318] [2021-11-20 06:16:58,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352242318] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:16:58,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:16:58,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 9 [2021-11-20 06:16:58,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685933080] [2021-11-20 06:16:58,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:16:58,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:16:58,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:16:58,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:16:58,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:16:58,968 INFO L87 Difference]: Start difference. First operand 490 states and 725 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 06:17:03,836 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:17:05,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:17:07,866 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:17:11,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:17:11,172 INFO L93 Difference]: Finished difference Result 974 states and 1502 transitions. [2021-11-20 06:17:11,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:17:11,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 210 [2021-11-20 06:17:11,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:17:11,184 INFO L225 Difference]: With dead ends: 974 [2021-11-20 06:17:11,185 INFO L226 Difference]: Without dead ends: 520 [2021-11-20 06:17:11,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:17:11,192 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 17 mSDsluCounter, 3024 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 5 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:17:11,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 3675 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 277 Invalid, 3 Unknown, 0 Unchecked, 11.3s Time] [2021-11-20 06:17:11,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-11-20 06:17:11,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 494. [2021-11-20 06:17:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 300 states have (on average 1.2466666666666666) internal successors, (374), 304 states have internal predecessors, (374), 163 states have call successors, (163), 28 states have call predecessors, (163), 29 states have return successors, (192), 162 states have call predecessors, (192), 161 states have call successors, (192) [2021-11-20 06:17:11,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 729 transitions. [2021-11-20 06:17:11,235 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 729 transitions. Word has length 210 [2021-11-20 06:17:11,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:17:11,236 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 729 transitions. [2021-11-20 06:17:11,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-20 06:17:11,237 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 729 transitions. [2021-11-20 06:17:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-20 06:17:11,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:17:11,241 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:17:11,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 06:17:11,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:17:11,457 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:17:11,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:17:11,457 INFO L85 PathProgramCache]: Analyzing trace with hash 349629412, now seen corresponding path program 1 times [2021-11-20 06:17:11,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:17:11,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987911818] [2021-11-20 06:17:11,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:17:11,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:17:11,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:17:11,464 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:17:11,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 06:17:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:17:13,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 06:17:13,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:17:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 152 proven. 3 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-20 06:17:14,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:17:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-20 06:17:15,632 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:17:15,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987911818] [2021-11-20 06:17:15,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987911818] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:17:15,633 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:17:15,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2021-11-20 06:17:15,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650826280] [2021-11-20 06:17:15,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:17:15,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:17:15,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:17:15,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:17:15,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:17:15,635 INFO L87 Difference]: Start difference. First operand 494 states and 729 transitions. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-20 06:17:18,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:17:19,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:17:19,957 INFO L93 Difference]: Finished difference Result 937 states and 1400 transitions. [2021-11-20 06:17:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 06:17:19,958 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) Word has length 210 [2021-11-20 06:17:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:17:19,965 INFO L225 Difference]: With dead ends: 937 [2021-11-20 06:17:19,965 INFO L226 Difference]: Without dead ends: 497 [2021-11-20 06:17:19,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:17:19,970 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 11 mSDsluCounter, 3559 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4161 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:17:19,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 4161 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 339 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-11-20 06:17:19,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-11-20 06:17:19,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2021-11-20 06:17:20,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 302 states have (on average 1.2417218543046358) internal successors, (375), 307 states have internal predecessors, (375), 163 states have call successors, (163), 28 states have call predecessors, (163), 30 states have return successors, (195), 162 states have call predecessors, (195), 161 states have call successors, (195) [2021-11-20 06:17:20,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 733 transitions. [2021-11-20 06:17:20,006 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 733 transitions. Word has length 210 [2021-11-20 06:17:20,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:17:20,007 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 733 transitions. [2021-11-20 06:17:20,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 9 states have internal predecessors, (96), 4 states have call successors, (37), 2 states have call predecessors, (37), 4 states have return successors, (35), 4 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-20 06:17:20,008 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 733 transitions. [2021-11-20 06:17:20,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-20 06:17:20,011 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:17:20,011 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:17:20,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 06:17:20,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:17:20,237 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:17:20,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:17:20,237 INFO L85 PathProgramCache]: Analyzing trace with hash -239859090, now seen corresponding path program 1 times [2021-11-20 06:17:20,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:17:20,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [269923800] [2021-11-20 06:17:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:17:20,239 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:17:20,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:17:20,241 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:17:20,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 06:17:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:17:21,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 06:17:21,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:17:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-11-20 06:17:22,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:17:24,150 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2021-11-20 06:17:24,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:17:24,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [269923800] [2021-11-20 06:17:24,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [269923800] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:17:24,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:17:24,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2021-11-20 06:17:24,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010327082] [2021-11-20 06:17:24,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:17:24,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 06:17:24,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:17:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 06:17:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:17:24,153 INFO L87 Difference]: Start difference. First operand 497 states and 733 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-20 06:17:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:17:26,467 INFO L93 Difference]: Finished difference Result 958 states and 1417 transitions. [2021-11-20 06:17:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:17:26,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) Word has length 221 [2021-11-20 06:17:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:17:26,477 INFO L225 Difference]: With dead ends: 958 [2021-11-20 06:17:26,477 INFO L226 Difference]: Without dead ends: 497 [2021-11-20 06:17:26,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:17:26,485 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 2 mSDsluCounter, 3502 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 4100 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:17:26,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 4100 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-20 06:17:26,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-11-20 06:17:26,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 497. [2021-11-20 06:17:26,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 302 states have (on average 1.2417218543046358) internal successors, (375), 307 states have internal predecessors, (375), 163 states have call successors, (163), 28 states have call predecessors, (163), 30 states have return successors, (194), 162 states have call predecessors, (194), 161 states have call successors, (194) [2021-11-20 06:17:26,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 732 transitions. [2021-11-20 06:17:26,523 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 732 transitions. Word has length 221 [2021-11-20 06:17:26,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:17:26,524 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 732 transitions. [2021-11-20 06:17:26,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 4 states have call predecessors, (28), 3 states have call successors, (28) [2021-11-20 06:17:26,524 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 732 transitions. [2021-11-20 06:17:26,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-20 06:17:26,526 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:17:26,527 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:17:26,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 06:17:26,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:17:26,741 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:17:26,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:17:26,741 INFO L85 PathProgramCache]: Analyzing trace with hash -592509774, now seen corresponding path program 1 times [2021-11-20 06:17:26,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:17:26,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779584806] [2021-11-20 06:17:26,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:17:26,744 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:17:26,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:17:26,746 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:17:26,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 06:17:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:17:28,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 1687 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 06:17:28,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:17:56,698 WARN L227 SmtUtils]: Spent 5.87s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 06:17:57,949 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 [2021-11-20 06:17:57,964 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 [2021-11-20 06:18:00,247 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 230 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-11-20 06:18:00,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:18:14,901 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:18:14,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 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 [2021-11-20 06:18:14,981 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-20 06:18:14,981 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 [2021-11-20 06:18:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-20 06:18:15,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:18:15,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779584806] [2021-11-20 06:18:15,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779584806] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:18:15,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:18:15,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [15] total 22 [2021-11-20 06:18:15,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449265242] [2021-11-20 06:18:15,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:15,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-20 06:18:15,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:18:15,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-20 06:18:15,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=402, Unknown=2, NotChecked=0, Total=462 [2021-11-20 06:18:15,423 INFO L87 Difference]: Start difference. First operand 497 states and 732 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 14 states have internal predecessors, (98), 6 states have call successors, (30), 3 states have call predecessors, (30), 6 states have return successors, (29), 8 states have call predecessors, (29), 6 states have call successors, (29) [2021-11-20 06:18:26,529 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:18:28,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:18:30,618 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:18:34,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:34,583 INFO L93 Difference]: Finished difference Result 994 states and 1521 transitions. [2021-11-20 06:18:34,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:18:34,585 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 14 states have internal predecessors, (98), 6 states have call successors, (30), 3 states have call predecessors, (30), 6 states have return successors, (29), 8 states have call predecessors, (29), 6 states have call successors, (29) Word has length 232 [2021-11-20 06:18:34,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:34,592 INFO L225 Difference]: With dead ends: 994 [2021-11-20 06:18:34,592 INFO L226 Difference]: Without dead ends: 562 [2021-11-20 06:18:34,597 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 439 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 45.7s TimeCoverageRelationStatistics Valid=106, Invalid=646, Unknown=4, NotChecked=0, Total=756 [2021-11-20 06:18:34,598 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 77 mSDsluCounter, 4137 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 11 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 4763 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:34,598 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 4763 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 625 Invalid, 3 Unknown, 175 Unchecked, 11.9s Time] [2021-11-20 06:18:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-11-20 06:18:34,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 536. [2021-11-20 06:18:34,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 330 states have (on average 1.2303030303030302) internal successors, (406), 335 states have internal predecessors, (406), 169 states have call successors, (169), 32 states have call predecessors, (169), 35 states have return successors, (215), 169 states have call predecessors, (215), 167 states have call successors, (215) [2021-11-20 06:18:34,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 790 transitions. [2021-11-20 06:18:34,638 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 790 transitions. Word has length 232 [2021-11-20 06:18:34,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:34,639 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 790 transitions. [2021-11-20 06:18:34,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 14 states have internal predecessors, (98), 6 states have call successors, (30), 3 states have call predecessors, (30), 6 states have return successors, (29), 8 states have call predecessors, (29), 6 states have call successors, (29) [2021-11-20 06:18:34,639 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 790 transitions. [2021-11-20 06:18:34,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-20 06:18:34,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:34,642 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:34,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 06:18:34,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:18:34,857 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:34,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:34,857 INFO L85 PathProgramCache]: Analyzing trace with hash -399459536, now seen corresponding path program 1 times [2021-11-20 06:18:34,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:18:34,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753960414] [2021-11-20 06:18:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:34,860 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:18:34,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:18:34,861 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:18:34,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 06:18:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:36,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:18:36,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:18:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-11-20 06:18:37,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:18:38,048 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2021-11-20 06:18:38,048 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:18:38,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753960414] [2021-11-20 06:18:38,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753960414] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:18:38,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:18:38,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-20 06:18:38,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714938730] [2021-11-20 06:18:38,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:38,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:18:38,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:18:38,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:18:38,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:18:38,050 INFO L87 Difference]: Start difference. First operand 536 states and 790 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-20 06:18:38,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:38,289 INFO L93 Difference]: Finished difference Result 1029 states and 1589 transitions. [2021-11-20 06:18:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:18:38,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 232 [2021-11-20 06:18:38,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:38,298 INFO L225 Difference]: With dead ends: 1029 [2021-11-20 06:18:38,298 INFO L226 Difference]: Without dead ends: 556 [2021-11-20 06:18:38,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:18:38,303 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 8 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2628 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 [2021-11-20 06:18:38,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2628 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:18:38,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-11-20 06:18:38,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 544. [2021-11-20 06:18:38,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 338 states have (on average 1.227810650887574) internal successors, (415), 343 states have internal predecessors, (415), 169 states have call successors, (169), 32 states have call predecessors, (169), 35 states have return successors, (215), 169 states have call predecessors, (215), 167 states have call successors, (215) [2021-11-20 06:18:38,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 799 transitions. [2021-11-20 06:18:38,341 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 799 transitions. Word has length 232 [2021-11-20 06:18:38,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:38,342 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 799 transitions. [2021-11-20 06:18:38,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-20 06:18:38,342 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 799 transitions. [2021-11-20 06:18:38,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-20 06:18:38,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:38,345 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:18:38,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 06:18:38,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:18:38,569 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:38,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:38,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2014363318, now seen corresponding path program 1 times [2021-11-20 06:18:38,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:18:38,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318246230] [2021-11-20 06:18:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:38,573 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:18:38,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:18:38,574 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:18:38,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 06:18:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:40,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 1691 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:18:40,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:18:41,198 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2021-11-20 06:18:41,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:18:42,285 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2021-11-20 06:18:42,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:18:42,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318246230] [2021-11-20 06:18:42,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318246230] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:42,286 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:42,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-20 06:18:42,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273761924] [2021-11-20 06:18:42,286 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:42,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 06:18:42,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:18:42,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 06:18:42,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:18:42,288 INFO L87 Difference]: Start difference. First operand 544 states and 799 transitions. Second operand has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-20 06:18:44,876 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:18:46,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:46,030 INFO L93 Difference]: Finished difference Result 988 states and 1482 transitions. [2021-11-20 06:18:46,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:18:46,031 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) Word has length 233 [2021-11-20 06:18:46,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:46,038 INFO L225 Difference]: With dead ends: 988 [2021-11-20 06:18:46,038 INFO L226 Difference]: Without dead ends: 546 [2021-11-20 06:18:46,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:18:46,043 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 80 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 3466 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:46,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 3466 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 202 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2021-11-20 06:18:46,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-11-20 06:18:46,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2021-11-20 06:18:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 339 states have (on average 1.2271386430678466) internal successors, (416), 345 states have internal predecessors, (416), 169 states have call successors, (169), 32 states have call predecessors, (169), 36 states have return successors, (226), 169 states have call predecessors, (226), 167 states have call successors, (226) [2021-11-20 06:18:46,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 811 transitions. [2021-11-20 06:18:46,082 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 811 transitions. Word has length 233 [2021-11-20 06:18:46,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:46,083 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 811 transitions. [2021-11-20 06:18:46,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.666666666666666) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2021-11-20 06:18:46,083 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 811 transitions. [2021-11-20 06:18:46,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2021-11-20 06:18:46,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:46,086 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 06:18:46,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-20 06:18:46,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:18:46,311 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:46,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:46,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2076103812, now seen corresponding path program 1 times [2021-11-20 06:18:46,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:18:46,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025587072] [2021-11-20 06:18:46,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:46,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:18:46,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:18:46,314 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:18:46,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 06:18:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:48,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:18:48,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:18:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-11-20 06:18:49,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:18:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2021-11-20 06:18:51,091 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:18:51,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025587072] [2021-11-20 06:18:51,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025587072] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:18:51,092 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:18:51,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-11-20 06:18:51,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314770619] [2021-11-20 06:18:51,092 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:18:51,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:18:51,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:18:51,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:18:51,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-20 06:18:51,095 INFO L87 Difference]: Start difference. First operand 546 states and 811 transitions. Second operand has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (37), 5 states have call predecessors, (37), 6 states have call successors, (37) [2021-11-20 06:18:54,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:18:55,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:18:55,651 INFO L93 Difference]: Finished difference Result 993 states and 1507 transitions. [2021-11-20 06:18:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:18:55,652 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (37), 5 states have call predecessors, (37), 6 states have call successors, (37) Word has length 256 [2021-11-20 06:18:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:18:55,659 INFO L225 Difference]: With dead ends: 993 [2021-11-20 06:18:55,660 INFO L226 Difference]: Without dead ends: 549 [2021-11-20 06:18:55,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 506 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:18:55,664 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 129 mSDsluCounter, 2840 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 36 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-20 06:18:55,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 3442 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 299 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2021-11-20 06:18:55,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-20 06:18:55,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 547. [2021-11-20 06:18:55,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 340 states have (on average 1.2264705882352942) internal successors, (417), 346 states have internal predecessors, (417), 169 states have call successors, (169), 32 states have call predecessors, (169), 36 states have return successors, (226), 169 states have call predecessors, (226), 167 states have call successors, (226) [2021-11-20 06:18:55,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 812 transitions. [2021-11-20 06:18:55,705 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 812 transitions. Word has length 256 [2021-11-20 06:18:55,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:18:55,705 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 812 transitions. [2021-11-20 06:18:55,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 12.375) internal successors, (99), 9 states have internal predecessors, (99), 6 states have call successors, (39), 2 states have call predecessors, (39), 3 states have return successors, (37), 5 states have call predecessors, (37), 6 states have call successors, (37) [2021-11-20 06:18:55,706 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 812 transitions. [2021-11-20 06:18:55,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-20 06:18:55,709 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:18:55,709 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 06:18:55,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 06:18:55,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:18:55,933 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:18:55,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:18:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash 313127199, now seen corresponding path program 1 times [2021-11-20 06:18:55,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:18:55,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491446738] [2021-11-20 06:18:55,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:18:55,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:18:55,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:18:55,940 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:18:55,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 06:18:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:18:57,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 1764 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:18:57,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:18:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 217 proven. 3 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-11-20 06:18:59,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:19:00,919 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2021-11-20 06:19:00,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:19:00,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491446738] [2021-11-20 06:19:00,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491446738] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-20 06:19:00,919 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-20 06:19:00,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2021-11-20 06:19:00,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686833239] [2021-11-20 06:19:00,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-20 06:19:00,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:19:00,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:19:00,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:19:00,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:19:00,922 INFO L87 Difference]: Start difference. First operand 547 states and 812 transitions. Second operand has 10 states, 9 states have (on average 12.555555555555555) internal successors, (113), 10 states have internal predecessors, (113), 7 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (38), 4 states have call predecessors, (38), 7 states have call successors, (38) [2021-11-20 06:19:04,147 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:19:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:19:06,659 INFO L93 Difference]: Finished difference Result 1025 states and 1558 transitions. [2021-11-20 06:19:06,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:19:06,660 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 12.555555555555555) internal successors, (113), 10 states have internal predecessors, (113), 7 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (38), 4 states have call predecessors, (38), 7 states have call successors, (38) Word has length 257 [2021-11-20 06:19:06,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:19:06,668 INFO L225 Difference]: With dead ends: 1025 [2021-11-20 06:19:06,668 INFO L226 Difference]: Without dead ends: 580 [2021-11-20 06:19:06,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:19:06,672 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 158 mSDsluCounter, 3896 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 4482 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:19:06,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 4482 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 473 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2021-11-20 06:19:06,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-11-20 06:19:06,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 574. [2021-11-20 06:19:06,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 366 states have (on average 1.2322404371584699) internal successors, (451), 371 states have internal predecessors, (451), 170 states have call successors, (170), 32 states have call predecessors, (170), 36 states have return successors, (227), 171 states have call predecessors, (227), 168 states have call successors, (227) [2021-11-20 06:19:06,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 848 transitions. [2021-11-20 06:19:06,713 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 848 transitions. Word has length 257 [2021-11-20 06:19:06,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:19:06,714 INFO L470 AbstractCegarLoop]: Abstraction has 574 states and 848 transitions. [2021-11-20 06:19:06,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 12.555555555555555) internal successors, (113), 10 states have internal predecessors, (113), 7 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (38), 4 states have call predecessors, (38), 7 states have call successors, (38) [2021-11-20 06:19:06,715 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 848 transitions. [2021-11-20 06:19:06,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-20 06:19:06,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:19:06,718 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 06:19:06,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 06:19:06,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:19:06,932 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:19:06,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:19:06,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1570105985, now seen corresponding path program 2 times [2021-11-20 06:19:06,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:19:06,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224934168] [2021-11-20 06:19:06,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-20 06:19:06,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:19:06,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:19:06,937 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:19:06,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 06:19:09,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-20 06:19:09,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-20 06:19:09,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 06:19:09,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:19:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-11-20 06:19:11,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:19:12,667 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 498 trivial. 0 not checked. [2021-11-20 06:19:12,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:19:12,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224934168] [2021-11-20 06:19:12,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224934168] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 06:19:12,669 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:19:12,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 13 [2021-11-20 06:19:12,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540955819] [2021-11-20 06:19:12,670 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 06:19:12,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 06:19:12,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:19:12,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 06:19:12,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-20 06:19:12,672 INFO L87 Difference]: Start difference. First operand 574 states and 848 transitions. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (50), 4 states have call predecessors, (50), 2 states have return successors, (47), 8 states have call predecessors, (47), 7 states have call successors, (47) [2021-11-20 06:19:15,735 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:19:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:19:17,522 INFO L93 Difference]: Finished difference Result 1050 states and 1572 transitions. [2021-11-20 06:19:17,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 06:19:17,523 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (50), 4 states have call predecessors, (50), 2 states have return successors, (47), 8 states have call predecessors, (47), 7 states have call successors, (47) Word has length 287 [2021-11-20 06:19:17,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:19:17,535 INFO L225 Difference]: With dead ends: 1050 [2021-11-20 06:19:17,536 INFO L226 Difference]: Without dead ends: 586 [2021-11-20 06:19:17,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-11-20 06:19:17,544 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 99 mSDsluCounter, 4587 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 38 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 5189 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:19:17,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 5189 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 362 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-20 06:19:17,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-11-20 06:19:17,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 586. [2021-11-20 06:19:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 372 states have (on average 1.2311827956989247) internal successors, (458), 377 states have internal predecessors, (458), 175 states have call successors, (175), 33 states have call predecessors, (175), 37 states have return successors, (232), 176 states have call predecessors, (232), 173 states have call successors, (232) [2021-11-20 06:19:17,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 865 transitions. [2021-11-20 06:19:17,586 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 865 transitions. Word has length 287 [2021-11-20 06:19:17,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:19:17,589 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 865 transitions. [2021-11-20 06:19:17,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (50), 4 states have call predecessors, (50), 2 states have return successors, (47), 8 states have call predecessors, (47), 7 states have call successors, (47) [2021-11-20 06:19:17,589 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 865 transitions. [2021-11-20 06:19:17,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-20 06:19:17,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:19:17,593 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:19:17,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 06:19:17,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:19:17,808 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:19:17,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:19:17,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1692182333, now seen corresponding path program 1 times [2021-11-20 06:19:17,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:19:17,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072287898] [2021-11-20 06:19:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:19:17,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:19:17,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:19:17,812 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:19:17,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 06:19:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:19:22,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 2084 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-20 06:19:23,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:19:24,940 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 [2021-11-20 06:19:24,952 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 [2021-11-20 06:19:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2021-11-20 06:19:26,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:21:36,545 WARN L227 SmtUtils]: Spent 2.15m 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) [2021-11-20 06:21:40,389 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 06:21:40,390 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 [2021-11-20 06:21:40,474 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-11-20 06:21:40,474 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 [2021-11-20 06:21:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 9 proven. 50 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-11-20 06:21:40,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:21:40,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072287898] [2021-11-20 06:21:40,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072287898] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:21:40,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:21:40,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 17 [2021-11-20 06:21:40,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747754247] [2021-11-20 06:21:40,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:21:40,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:21:40,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:21:40,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:21:40,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:21:40,905 INFO L87 Difference]: Start difference. First operand 586 states and 865 transitions. Second operand has 14 states, 13 states have (on average 9.307692307692308) internal successors, (121), 14 states have internal predecessors, (121), 7 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2021-11-20 06:21:48,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:21:50,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:21:58,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:21:58,746 INFO L93 Difference]: Finished difference Result 1199 states and 1855 transitions. [2021-11-20 06:21:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:21:58,747 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 9.307692307692308) internal successors, (121), 14 states have internal predecessors, (121), 7 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) Word has length 317 [2021-11-20 06:21:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:21:58,755 INFO L225 Difference]: With dead ends: 1199 [2021-11-20 06:21:58,755 INFO L226 Difference]: Without dead ends: 656 [2021-11-20 06:21:58,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2021-11-20 06:21:58,762 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 112 mSDsluCounter, 6196 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 19 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 6792 SdHoareTripleChecker+Invalid, 1460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-11-20 06:21:58,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 6792 Invalid, 1460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1439 Invalid, 2 Unknown, 0 Unchecked, 15.7s Time] [2021-11-20 06:21:58,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-11-20 06:21:58,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 612. [2021-11-20 06:21:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 396 states have (on average 1.2373737373737375) internal successors, (490), 401 states have internal predecessors, (490), 175 states have call successors, (175), 33 states have call predecessors, (175), 39 states have return successors, (251), 178 states have call predecessors, (251), 173 states have call successors, (251) [2021-11-20 06:21:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 916 transitions. [2021-11-20 06:21:58,806 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 916 transitions. Word has length 317 [2021-11-20 06:21:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:21:58,806 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 916 transitions. [2021-11-20 06:21:58,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 9.307692307692308) internal successors, (121), 14 states have internal predecessors, (121), 7 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 7 states have call predecessors, (33), 7 states have call successors, (33) [2021-11-20 06:21:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 916 transitions. [2021-11-20 06:21:58,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-20 06:21:58,810 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:21:58,810 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:21:58,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 06:21:59,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:21:59,033 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:21:59,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:21:59,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1564631043, now seen corresponding path program 1 times [2021-11-20 06:21:59,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:21:59,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831773892] [2021-11-20 06:21:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:21:59,036 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:21:59,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:21:59,037 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:21:59,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-20 06:22:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:00,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 2078 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 06:22:00,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2021-11-20 06:22:02,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 5 proven. 34 refuted. 0 times theorem prover too weak. 609 trivial. 0 not checked. [2021-11-20 06:22:03,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:03,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831773892] [2021-11-20 06:22:03,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831773892] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:22:03,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:22:03,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2021-11-20 06:22:03,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791230562] [2021-11-20 06:22:03,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:03,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:22:03,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:03,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:22:03,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 06:22:03,361 INFO L87 Difference]: Start difference. First operand 612 states and 916 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 06:22:03,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:03,553 INFO L93 Difference]: Finished difference Result 1194 states and 1889 transitions. [2021-11-20 06:22:03,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 06:22:03,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 317 [2021-11-20 06:22:03,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:03,562 INFO L225 Difference]: With dead ends: 1194 [2021-11-20 06:22:03,563 INFO L226 Difference]: Without dead ends: 618 [2021-11-20 06:22:03,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 631 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 06:22:03,570 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 7 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1912 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 [2021-11-20 06:22:03,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1912 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 06:22:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-11-20 06:22:03,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 612. [2021-11-20 06:22:03,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 396 states have (on average 1.2323232323232323) internal successors, (488), 401 states have internal predecessors, (488), 175 states have call successors, (175), 33 states have call predecessors, (175), 39 states have return successors, (251), 178 states have call predecessors, (251), 173 states have call successors, (251) [2021-11-20 06:22:03,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 914 transitions. [2021-11-20 06:22:03,608 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 914 transitions. Word has length 317 [2021-11-20 06:22:03,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:03,609 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 914 transitions. [2021-11-20 06:22:03,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 06:22:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 914 transitions. [2021-11-20 06:22:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-20 06:22:03,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:03,613 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 06:22:03,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:03,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:03,837 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:03,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:03,837 INFO L85 PathProgramCache]: Analyzing trace with hash 14249765, now seen corresponding path program 1 times [2021-11-20 06:22:03,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:03,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234691838] [2021-11-20 06:22:03,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:03,840 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:03,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:03,841 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:03,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-20 06:22:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:05,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 2103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 06:22:05,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:07,298 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-11-20 06:22:07,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 644 trivial. 0 not checked. [2021-11-20 06:22:08,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:08,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234691838] [2021-11-20 06:22:08,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234691838] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:22:08,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:22:08,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-20 06:22:08,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057328465] [2021-11-20 06:22:08,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:08,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 06:22:08,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 06:22:08,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:22:08,499 INFO L87 Difference]: Start difference. First operand 612 states and 914 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 06:22:08,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:08,799 INFO L93 Difference]: Finished difference Result 1169 states and 1820 transitions. [2021-11-20 06:22:08,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 06:22:08,801 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 325 [2021-11-20 06:22:08,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:08,809 INFO L225 Difference]: With dead ends: 1169 [2021-11-20 06:22:08,809 INFO L226 Difference]: Without dead ends: 617 [2021-11-20 06:22:08,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 644 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-20 06:22:08,816 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 7 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1890 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 [2021-11-20 06:22:08,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1890 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 06:22:08,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2021-11-20 06:22:08,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 613. [2021-11-20 06:22:08,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 397 states have (on average 1.2317380352644836) internal successors, (489), 402 states have internal predecessors, (489), 175 states have call successors, (175), 33 states have call predecessors, (175), 39 states have return successors, (251), 178 states have call predecessors, (251), 173 states have call successors, (251) [2021-11-20 06:22:08,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 915 transitions. [2021-11-20 06:22:08,863 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 915 transitions. Word has length 325 [2021-11-20 06:22:08,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:08,863 INFO L470 AbstractCegarLoop]: Abstraction has 613 states and 915 transitions. [2021-11-20 06:22:08,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2021-11-20 06:22:08,864 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 915 transitions. [2021-11-20 06:22:08,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-20 06:22:08,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:08,868 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 06:22:08,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:09,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:09,093 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:09,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:09,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1202136462, now seen corresponding path program 1 times [2021-11-20 06:22:09,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:09,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741083838] [2021-11-20 06:22:09,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:09,096 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:09,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:09,097 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:09,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-20 06:22:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:10,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 2105 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:22:10,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2021-11-20 06:22:12,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2021-11-20 06:22:14,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:14,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741083838] [2021-11-20 06:22:14,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741083838] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:22:14,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:22:14,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 11 [2021-11-20 06:22:14,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117532710] [2021-11-20 06:22:14,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:14,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:22:14,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:14,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:22:14,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-20 06:22:14,577 INFO L87 Difference]: Start difference. First operand 613 states and 915 transitions. Second operand has 10 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-20 06:22:17,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:17,397 INFO L93 Difference]: Finished difference Result 1182 states and 1824 transitions. [2021-11-20 06:22:17,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:22:17,398 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) Word has length 325 [2021-11-20 06:22:17,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:17,406 INFO L225 Difference]: With dead ends: 1182 [2021-11-20 06:22:17,406 INFO L226 Difference]: Without dead ends: 632 [2021-11-20 06:22:17,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 651 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:22:17,412 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 4 mSDsluCounter, 4827 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5443 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:17,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 5443 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-20 06:22:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-20 06:22:17,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 615. [2021-11-20 06:22:17,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 398 states have (on average 1.2311557788944723) internal successors, (490), 404 states have internal predecessors, (490), 175 states have call successors, (175), 33 states have call predecessors, (175), 40 states have return successors, (257), 178 states have call predecessors, (257), 173 states have call successors, (257) [2021-11-20 06:22:17,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 922 transitions. [2021-11-20 06:22:17,458 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 922 transitions. Word has length 325 [2021-11-20 06:22:17,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:17,458 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 922 transitions. [2021-11-20 06:22:17,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 14.0) internal successors, (126), 8 states have internal predecessors, (126), 3 states have call successors, (35), 2 states have call predecessors, (35), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2021-11-20 06:22:17,459 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 922 transitions. [2021-11-20 06:22:17,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-20 06:22:17,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:17,462 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 06:22:17,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:17,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:17,685 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:17,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:17,685 INFO L85 PathProgramCache]: Analyzing trace with hash -435887103, now seen corresponding path program 1 times [2021-11-20 06:22:17,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:17,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910649306] [2021-11-20 06:22:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:17,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:17,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:17,689 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:17,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-20 06:22:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:19,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2011 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-20 06:22:19,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-11-20 06:22:21,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:22,658 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2021-11-20 06:22:22,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:22,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910649306] [2021-11-20 06:22:22,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910649306] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:22:22,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:22:22,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2021-11-20 06:22:22,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803130542] [2021-11-20 06:22:22,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:22,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 06:22:22,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:22,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 06:22:22,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 06:22:22,660 INFO L87 Difference]: Start difference. First operand 615 states and 922 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 06:22:26,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:22:28,670 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:22:31,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:31,264 INFO L93 Difference]: Finished difference Result 1208 states and 1926 transitions. [2021-11-20 06:22:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 06:22:31,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 304 [2021-11-20 06:22:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:31,275 INFO L225 Difference]: With dead ends: 1208 [2021-11-20 06:22:31,275 INFO L226 Difference]: Without dead ends: 629 [2021-11-20 06:22:31,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-20 06:22:31,284 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 15 mSDsluCounter, 1798 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2448 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:31,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 2448 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 180 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2021-11-20 06:22:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-11-20 06:22:31,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 617. [2021-11-20 06:22:31,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 400 states have (on average 1.23) internal successors, (492), 406 states have internal predecessors, (492), 175 states have call successors, (175), 33 states have call predecessors, (175), 40 states have return successors, (257), 178 states have call predecessors, (257), 173 states have call successors, (257) [2021-11-20 06:22:31,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 924 transitions. [2021-11-20 06:22:31,327 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 924 transitions. Word has length 304 [2021-11-20 06:22:31,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:31,328 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 924 transitions. [2021-11-20 06:22:31,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2021-11-20 06:22:31,328 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 924 transitions. [2021-11-20 06:22:31,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-20 06:22:31,331 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:31,332 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 06:22:31,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:31,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:31,545 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:31,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash 285032319, now seen corresponding path program 1 times [2021-11-20 06:22:31,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:31,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222570751] [2021-11-20 06:22:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:31,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:31,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:31,549 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:31,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-20 06:22:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:33,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 2008 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 06:22:33,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2021-11-20 06:22:35,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:22:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 573 backedges. 28 proven. 6 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2021-11-20 06:22:37,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 06:22:37,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222570751] [2021-11-20 06:22:37,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222570751] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-20 06:22:37,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 06:22:37,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 12 [2021-11-20 06:22:37,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760864264] [2021-11-20 06:22:37,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:22:37,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 06:22:37,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 06:22:37,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 06:22:37,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-20 06:22:37,810 INFO L87 Difference]: Start difference. First operand 617 states and 924 transitions. Second operand has 9 states, 8 states have (on average 15.25) internal successors, (122), 9 states have internal predecessors, (122), 6 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-20 06:22:41,965 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-20 06:22:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 06:22:44,804 INFO L93 Difference]: Finished difference Result 1139 states and 1747 transitions. [2021-11-20 06:22:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-20 06:22:44,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 15.25) internal successors, (122), 9 states have internal predecessors, (122), 6 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) Word has length 304 [2021-11-20 06:22:44,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 06:22:44,811 INFO L225 Difference]: With dead ends: 1139 [2021-11-20 06:22:44,811 INFO L226 Difference]: Without dead ends: 624 [2021-11-20 06:22:44,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 615 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2021-11-20 06:22:44,815 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 175 mSDsluCounter, 3888 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 4475 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-20 06:22:44,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 4475 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 670 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-11-20 06:22:44,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2021-11-20 06:22:44,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 592. [2021-11-20 06:22:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 376 states have (on average 1.2234042553191489) internal successors, (460), 382 states have internal predecessors, (460), 174 states have call successors, (174), 33 states have call predecessors, (174), 40 states have return successors, (255), 177 states have call predecessors, (255), 172 states have call successors, (255) [2021-11-20 06:22:44,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 889 transitions. [2021-11-20 06:22:44,856 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 889 transitions. Word has length 304 [2021-11-20 06:22:44,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 06:22:44,857 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 889 transitions. [2021-11-20 06:22:44,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 15.25) internal successors, (122), 9 states have internal predecessors, (122), 6 states have call successors, (34), 2 states have call predecessors, (34), 4 states have return successors, (32), 5 states have call predecessors, (32), 6 states have call successors, (32) [2021-11-20 06:22:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 889 transitions. [2021-11-20 06:22:44,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-11-20 06:22:44,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 06:22:44,861 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-20 06:22:44,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-20 06:22:45,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 06:22:45,089 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 06:22:45,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:45,090 INFO L85 PathProgramCache]: Analyzing trace with hash 715521469, now seen corresponding path program 1 times [2021-11-20 06:22:45,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 06:22:45,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566230874] [2021-11-20 06:22:45,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:45,092 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 06:22:45,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 06:22:45,094 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 06:22:45,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64e81701-4f22-4f96-819f-30e026a7ceb8/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-20 06:22:53,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:22:53,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 2092 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-20 06:22:53,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 06:22:55,829 INFO L354 Elim1Store]: treesize reduction 336, result has 0.3 percent of original size [2021-11-20 06:22:55,830 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 [2021-11-20 06:22:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 293 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2021-11-20 06:22:57,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 06:24:23,338 WARN L227 SmtUtils]: Spent 1.41m 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) [2021-11-20 06:24:38,522 WARN L227 SmtUtils]: Spent 13.43s 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) [2021-11-20 06:24:38,526 INFO L354 Elim1Store]: treesize reduction 897, result has 45.1 percent of original size [2021-11-20 06:24:38,526 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