./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc --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 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 19:59:17,458 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:59:17,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:59:17,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:59:17,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:59:17,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:59:17,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:59:17,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:59:17,530 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:59:17,531 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:59:17,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:59:17,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:59:17,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:59:17,537 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:59:17,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:59:17,540 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:59:17,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:59:17,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:59:17,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:59:17,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:59:17,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:59:17,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:59:17,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:59:17,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:59:17,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:59:17,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:59:17,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:59:17,589 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:59:17,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:59:17,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:59:17,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:59:17,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:59:17,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:59:17,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:59:17,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:59:17,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:59:17,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:59:17,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:59:17,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:59:17,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:59:17,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:59:17,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 19:59:17,652 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:59:17,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:59:17,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:59:17,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:59:17,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:59:17,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:59:17,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:59:17,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:59:17,656 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:59:17,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:59:17,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:59:17,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:59:17,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:59:17,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:59:17,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:59:17,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:59:17,659 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:59:17,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:59:17,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:59:17,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:59:17,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:59:17,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:59:17,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:59:17,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:59:17,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:59:17,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:59:17,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:59:17,662 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:59:17,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:59:17,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:59:17,662 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_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43b2ef256b4d1a93a084f86d3d9a0522c1b29c695f7bf9f8438f4c917cc80da0 [2022-11-02 19:59:18,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:59:18,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:59:18,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:59:18,069 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:59:18,070 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:59:18,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2022-11-02 19:59:18,161 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/data/7490fa7c3/cb8f6524cd524a0ba15a8d779f221cf8/FLAG5a0880691 [2022-11-02 19:59:19,105 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:59:19,107 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i [2022-11-02 19:59:19,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/data/7490fa7c3/cb8f6524cd524a0ba15a8d779f221cf8/FLAG5a0880691 [2022-11-02 19:59:19,623 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/data/7490fa7c3/cb8f6524cd524a0ba15a8d779f221cf8 [2022-11-02 19:59:19,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:59:19,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:59:19,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:59:19,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:59:19,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:59:19,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:59:19" (1/1) ... [2022-11-02 19:59:19,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@659a67b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:19, skipping insertion in model container [2022-11-02 19:59:19,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:59:19" (1/1) ... [2022-11-02 19:59:19,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:59:19,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:59:20,095 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_63199ac4-d198-4942-bb57-1c72dd56192e/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506] [2022-11-02 19:59:20,102 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_63199ac4-d198-4942-bb57-1c72dd56192e/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566] [2022-11-02 19:59:21,015 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 19:59:21,102 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,106 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,107 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,108 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,113 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,127 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,138 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,142 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,143 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,147 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,149 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,152 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,153 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,579 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 19:59:21,581 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 19:59:21,582 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 19:59:21,584 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 19:59:21,586 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 19:59:21,587 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 19:59:21,588 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 19:59:21,589 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 19:59:21,590 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 19:59:21,591 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 19:59:21,754 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,762 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:59:21,881 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:59:21,894 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_63199ac4-d198-4942-bb57-1c72dd56192e/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4493,4506] [2022-11-02 19:59:21,895 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_63199ac4-d198-4942-bb57-1c72dd56192e/sv-benchmarks/c/aws-c-common/aws_array_list_back_harness.i[4553,4566] [2022-11-02 19:59:21,932 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 19:59:21,950 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,950 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,950 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,951 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,952 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,960 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,962 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,966 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,973 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,974 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,975 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,976 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:21,976 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:22,030 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 19:59:22,035 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 19:59:22,036 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 19:59:22,039 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 19:59:22,041 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 19:59:22,044 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 19:59:22,045 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 19:59:22,045 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 19:59:22,046 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 19:59:22,047 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 19:59:22,123 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:22,140 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 19:59:22,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:59:22,510 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:59:22,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22 WrapperNode [2022-11-02 19:59:22,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:59:22,512 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:59:22,512 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:59:22,512 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:59:22,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22" (1/1) ... [2022-11-02 19:59:22,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22" (1/1) ... [2022-11-02 19:59:22,678 INFO L138 Inliner]: procedures = 691, calls = 1682, calls flagged for inlining = 53, calls inlined = 9, statements flattened = 656 [2022-11-02 19:59:22,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:59:22,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:59:22,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:59:22,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:59:22,691 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22" (1/1) ... [2022-11-02 19:59:22,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22" (1/1) ... [2022-11-02 19:59:22,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22" (1/1) ... [2022-11-02 19:59:22,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22" (1/1) ... [2022-11-02 19:59:22,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22" (1/1) ... [2022-11-02 19:59:22,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22" (1/1) ... [2022-11-02 19:59:22,741 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22" (1/1) ... [2022-11-02 19:59:22,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22" (1/1) ... [2022-11-02 19:59:22,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:59:22,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:59:22,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:59:22,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:59:22,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22" (1/1) ... [2022-11-02 19:59:22,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:59:22,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:22,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:59:22,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:59:22,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 19:59:22,874 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-02 19:59:22,874 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-02 19:59:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-02 19:59:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-02 19:59:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-02 19:59:22,877 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-02 19:59:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 19:59:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-02 19:59:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-02 19:59:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 19:59:22,879 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 19:59:22,879 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 19:59:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:59:22,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 19:59:22,881 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-02 19:59:22,881 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-02 19:59:22,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:59:22,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:59:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-02 19:59:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-02 19:59:22,883 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-02 19:59:22,883 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-02 19:59:22,884 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-02 19:59:22,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-02 19:59:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-02 19:59:22,885 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-02 19:59:22,885 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-02 19:59:22,885 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-02 19:59:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 19:59:22,886 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 19:59:22,886 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-02 19:59:22,887 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-02 19:59:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 19:59:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 19:59:22,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 19:59:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-02 19:59:22,888 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-02 19:59:22,888 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-02 19:59:22,888 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-02 19:59:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 19:59:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-02 19:59:22,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-02 19:59:22,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:59:23,323 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:59:23,330 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:59:24,598 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:59:24,616 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:59:24,616 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 19:59:24,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:59:24 BoogieIcfgContainer [2022-11-02 19:59:24,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:59:24,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:59:24,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:59:24,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:59:24,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:59:19" (1/3) ... [2022-11-02 19:59:24,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27376086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:59:24, skipping insertion in model container [2022-11-02 19:59:24,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:59:22" (2/3) ... [2022-11-02 19:59:24,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27376086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:59:24, skipping insertion in model container [2022-11-02 19:59:24,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:59:24" (3/3) ... [2022-11-02 19:59:24,632 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_back_harness.i [2022-11-02 19:59:24,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:59:24,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:59:24,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:59:24,739 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@35cad4c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:59:24,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 19:59:24,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2022-11-02 19:59:24,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-02 19:59:24,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:24,761 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:24,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:24,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:24,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1489749117, now seen corresponding path program 1 times [2022-11-02 19:59:24,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:24,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392808274] [2022-11-02 19:59:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:24,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 19:59:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:59:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:59:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 19:59:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 19:59:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 19:59:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 19:59:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:59:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 19:59:25,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:59:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 19:59:25,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 19:59:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 19:59:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 19:59:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 19:59:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 19:59:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 19:59:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 19:59:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 19:59:25,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 19:59:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-02 19:59:25,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:25,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392808274] [2022-11-02 19:59:26,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392808274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:26,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:26,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:59:26,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528619802] [2022-11-02 19:59:26,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:26,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:59:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:26,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:59:26,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:59:26,062 INFO L87 Difference]: Start difference. First operand has 180 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 110 states have internal predecessors, (132), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-02 19:59:26,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:26,842 INFO L93 Difference]: Finished difference Result 374 states and 541 transitions. [2022-11-02 19:59:26,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:59:26,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2022-11-02 19:59:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:26,858 INFO L225 Difference]: With dead ends: 374 [2022-11-02 19:59:26,858 INFO L226 Difference]: Without dead ends: 192 [2022-11-02 19:59:26,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:59:26,871 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 114 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:26,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 285 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 19:59:26,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-02 19:59:26,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 171. [2022-11-02 19:59:26,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 103 states have internal predecessors, (119), 53 states have call successors, (53), 16 states have call predecessors, (53), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-02 19:59:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 223 transitions. [2022-11-02 19:59:26,946 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 223 transitions. Word has length 124 [2022-11-02 19:59:26,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:26,947 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 223 transitions. [2022-11-02 19:59:26,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (22), 5 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-02 19:59:26,947 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 223 transitions. [2022-11-02 19:59:26,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-02 19:59:26,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:26,952 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:26,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:59:26,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:26,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:26,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1640985525, now seen corresponding path program 1 times [2022-11-02 19:59:26,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:26,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975550026] [2022-11-02 19:59:26,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:26,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 19:59:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 19:59:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 19:59:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 19:59:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 19:59:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 19:59:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 19:59:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 19:59:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-02 19:59:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 19:59:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-02 19:59:27,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 19:59:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 19:59:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 19:59:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 19:59:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-02 19:59:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 19:59:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 19:59:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 19:59:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 19:59:27,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2022-11-02 19:59:27,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:27,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975550026] [2022-11-02 19:59:27,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975550026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:59:27,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24060727] [2022-11-02 19:59:27,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:27,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:27,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:27,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:27,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 19:59:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:28,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 2239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 19:59:28,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:28,602 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-11-02 19:59:28,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:28,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24060727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:28,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:59:28,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-02 19:59:28,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064602387] [2022-11-02 19:59:28,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:28,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:59:28,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:28,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:59:28,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-02 19:59:28,607 INFO L87 Difference]: Start difference. First operand 171 states and 223 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-02 19:59:29,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:29,090 INFO L93 Difference]: Finished difference Result 315 states and 417 transitions. [2022-11-02 19:59:29,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:59:29,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 124 [2022-11-02 19:59:29,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:29,095 INFO L225 Difference]: With dead ends: 315 [2022-11-02 19:59:29,095 INFO L226 Difference]: Without dead ends: 173 [2022-11-02 19:59:29,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-02 19:59:29,098 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 232 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:29,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 625 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 19:59:29,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-02 19:59:29,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-02 19:59:29,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 105 states have internal predecessors, (120), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (56), 51 states have call predecessors, (56), 51 states have call successors, (56) [2022-11-02 19:59:29,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2022-11-02 19:59:29,124 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 124 [2022-11-02 19:59:29,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:29,125 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2022-11-02 19:59:29,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-02 19:59:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2022-11-02 19:59:29,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-02 19:59:29,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:29,129 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:29,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:29,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:29,333 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:29,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:29,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1623021021, now seen corresponding path program 1 times [2022-11-02 19:59:29,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:29,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423638386] [2022-11-02 19:59:29,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:29,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:29,427 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:59:29,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475780358] [2022-11-02 19:59:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:29,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:29,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:29,430 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:29,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 19:59:30,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:59:30,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 19:59:30,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:30,150 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-02 19:59:30,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:59:30,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:59:30,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423638386] [2022-11-02 19:59:30,159 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 19:59:30,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475780358] [2022-11-02 19:59:30,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475780358] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:59:30,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:59:30,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 19:59:30,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679022954] [2022-11-02 19:59:30,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:59:30,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 19:59:30,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:59:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 19:59:30,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 19:59:30,165 INFO L87 Difference]: Start difference. First operand 173 states and 229 transitions. Second operand has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-02 19:59:30,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 19:59:30,642 INFO L93 Difference]: Finished difference Result 283 states and 374 transitions. [2022-11-02 19:59:30,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:59:30,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) Word has length 154 [2022-11-02 19:59:30,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 19:59:30,646 INFO L225 Difference]: With dead ends: 283 [2022-11-02 19:59:30,646 INFO L226 Difference]: Without dead ends: 173 [2022-11-02 19:59:30,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-02 19:59:30,648 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 249 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 19:59:30,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 748 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 19:59:30,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-02 19:59:30,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-11-02 19:59:30,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 103 states have (on average 1.1650485436893203) internal successors, (120), 105 states have internal predecessors, (120), 53 states have call successors, (53), 16 states have call predecessors, (53), 16 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2022-11-02 19:59:30,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 226 transitions. [2022-11-02 19:59:30,686 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 226 transitions. Word has length 154 [2022-11-02 19:59:30,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 19:59:30,687 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 226 transitions. [2022-11-02 19:59:30,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.5) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-02 19:59:30,687 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 226 transitions. [2022-11-02 19:59:30,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-11-02 19:59:30,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 19:59:30,690 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:59:30,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:59:30,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:30,909 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 19:59:30,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:59:30,910 INFO L85 PathProgramCache]: Analyzing trace with hash 2016135159, now seen corresponding path program 2 times [2022-11-02 19:59:30,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:59:30,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924367380] [2022-11-02 19:59:30,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:59:30,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:59:30,994 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 19:59:30,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842243670] [2022-11-02 19:59:30,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:59:30,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:59:30,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:59:30,996 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:59:31,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63199ac4-d198-4942-bb57-1c72dd56192e/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 19:59:32,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:59:32,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:59:32,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-02 19:59:32,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:59:32,279 INFO L390 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 [2022-11-02 19:59:32,991 INFO L356 Elim1Store]: treesize reduction 120, result has 50.2 percent of original size [2022-11-02 19:59:32,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 31 select indices, 31 select index equivalence classes, 435 disjoint index pairs (out of 465 index pairs), introduced 31 new quantified variables, introduced 30 case distinctions, treesize of input 156 treesize of output 214 [2022-11-02 19:59:36,296 WARN L718 sPolynomialRelations]: Constructing 1073741824(two to the power of 30 dual juncts.