./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/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_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/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_52d959e6-5087-4a76-90d3-528cf7032c4a/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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- 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 20:10:16,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:10:16,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:10:16,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:10:16,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:10:16,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:10:16,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:10:16,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:10:16,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:10:16,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:10:16,914 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:10:16,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:10:16,916 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:10:16,918 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:10:16,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:10:16,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:10:16,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:10:16,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:10:16,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:10:16,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:10:16,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:10:16,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:10:16,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:10:16,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:10:16,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:10:16,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:10:16,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:10:16,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:10:16,953 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:10:16,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:10:16,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:10:16,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:10:16,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:10:16,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:10:16,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:10:16,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:10:16,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:10:16,961 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:10:16,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:10:16,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:10:16,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:10:16,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:10:17,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:10:17,003 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:10:17,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:10:17,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:10:17,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:10:17,005 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:10:17,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:10:17,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:10:17,007 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:10:17,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:10:17,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:10:17,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:10:17,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:10:17,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:10:17,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:10:17,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:10:17,010 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:10:17,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:10:17,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:10:17,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:10:17,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:10:17,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:10:17,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:10:17,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:10:17,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:10:17,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:10:17,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:10:17,012 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:10:17,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:10:17,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:10:17,014 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_52d959e6-5087-4a76-90d3-528cf7032c4a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2022-11-02 20:10:17,265 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:10:17,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:10:17,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:10:17,298 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:10:17,299 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:10:17,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-02 20:10:17,385 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/data/2b1be85fd/812fe5cc617640a19daa6c7a1d01868f/FLAGc2d408bdc [2022-11-02 20:10:18,280 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:10:18,281 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-02 20:10:18,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/data/2b1be85fd/812fe5cc617640a19daa6c7a1d01868f/FLAGc2d408bdc [2022-11-02 20:10:18,396 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/data/2b1be85fd/812fe5cc617640a19daa6c7a1d01868f [2022-11-02 20:10:18,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:10:18,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:10:18,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:10:18,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:10:18,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:10:18,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:10:18" (1/1) ... [2022-11-02 20:10:18,414 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325ac560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:18, skipping insertion in model container [2022-11-02 20:10:18,414 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:10:18" (1/1) ... [2022-11-02 20:10:18,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:10:18,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:10:18,887 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_52d959e6-5087-4a76-90d3-528cf7032c4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-02 20:10:18,895 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_52d959e6-5087-4a76-90d3-528cf7032c4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-02 20:10:19,894 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:19,901 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:19,903 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:19,904 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:19,907 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:19,945 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:19,945 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:19,948 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:19,949 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:19,951 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:19,952 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:19,953 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:19,954 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,416 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:10:20,418 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:10:20,419 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:10:20,421 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:10:20,422 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:10:20,423 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:10:20,424 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:10:20,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:10:20,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:10:20,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:10:20,651 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:10:20,695 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,695 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,702 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,708 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,773 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,774 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,774 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,775 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,775 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,776 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,777 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,777 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,778 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,778 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,779 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,779 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,780 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,783 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,783 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,784 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,784 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,788 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,789 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,797 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,798 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,799 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,819 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:10:20,869 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:10:20,899 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_52d959e6-5087-4a76-90d3-528cf7032c4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-02 20:10:20,901 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_52d959e6-5087-4a76-90d3-528cf7032c4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-02 20:10:20,954 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,954 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,954 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,955 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,955 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,982 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,982 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,983 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,984 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,985 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,985 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,986 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:20,986 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,060 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:10:21,064 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:10:21,065 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:10:21,066 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:10:21,067 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:10:21,067 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:10:21,068 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:10:21,068 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:10:21,069 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:10:21,069 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:10:21,105 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:10:21,125 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,125 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,127 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,133 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,187 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,187 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,188 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,189 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,189 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,190 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,190 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,191 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,192 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,193 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,193 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,194 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,194 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,196 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,197 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,199 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,200 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,207 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,207 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,215 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,216 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,217 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:10:21,233 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:10:21,535 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:10:21,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21 WrapperNode [2022-11-02 20:10:21,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:10:21,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:10:21,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:10:21,540 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:10:21,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21" (1/1) ... [2022-11-02 20:10:21,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21" (1/1) ... [2022-11-02 20:10:21,807 INFO L138 Inliner]: procedures = 697, calls = 1905, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 840 [2022-11-02 20:10:21,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:10:21,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:10:21,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:10:21,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:10:21,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21" (1/1) ... [2022-11-02 20:10:21,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21" (1/1) ... [2022-11-02 20:10:21,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21" (1/1) ... [2022-11-02 20:10:21,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21" (1/1) ... [2022-11-02 20:10:21,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21" (1/1) ... [2022-11-02 20:10:21,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21" (1/1) ... [2022-11-02 20:10:21,938 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21" (1/1) ... [2022-11-02 20:10:21,944 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21" (1/1) ... [2022-11-02 20:10:21,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:10:21,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:10:21,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:10:21,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:10:21,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21" (1/1) ... [2022-11-02 20:10:21,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:10:22,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:22,024 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:10:22,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:10:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-02 20:10:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-02 20:10:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-02 20:10:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-02 20:10:22,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:10:22,072 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-02 20:10:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-02 20:10:22,072 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-02 20:10:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-02 20:10:22,072 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-02 20:10:22,073 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-02 20:10:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:10:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-02 20:10:22,073 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-02 20:10:22,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:10:22,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:10:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:10:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:10:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:10:22,074 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-02 20:10:22,074 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-02 20:10:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:10:22,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:10:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-02 20:10:22,075 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-02 20:10:22,075 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-11-02 20:10:22,076 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-11-02 20:10:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-02 20:10:22,076 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-02 20:10:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-02 20:10:22,076 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-02 20:10:22,076 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-02 20:10:22,077 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-02 20:10:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-02 20:10:22,077 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-02 20:10:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:10:22,077 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:10:22,077 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-02 20:10:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-02 20:10:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:10:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:10:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2022-11-02 20:10:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2022-11-02 20:10:22,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:10:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-02 20:10:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-02 20:10:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-02 20:10:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-02 20:10:22,079 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-02 20:10:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-02 20:10:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:10:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-02 20:10:22,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-02 20:10:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-02 20:10:22,080 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-02 20:10:22,080 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:10:22,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:10:22,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:10:22,608 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:10:22,610 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:10:24,122 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:10:24,142 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:10:24,143 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-02 20:10:24,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:10:24 BoogieIcfgContainer [2022-11-02 20:10:24,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:10:24,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:10:24,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:10:24,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:10:24,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:10:18" (1/3) ... [2022-11-02 20:10:24,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b723d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:10:24, skipping insertion in model container [2022-11-02 20:10:24,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:10:21" (2/3) ... [2022-11-02 20:10:24,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b723d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:10:24, skipping insertion in model container [2022-11-02 20:10:24,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:10:24" (3/3) ... [2022-11-02 20:10:24,160 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2022-11-02 20:10:24,186 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:10:24,186 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:10:24,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:10:24,308 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;@2cb788b6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:10:24,308 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:10:24,314 INFO L276 IsEmpty]: Start isEmpty. Operand has 326 states, 197 states have (on average 1.233502538071066) internal successors, (243), 198 states have internal predecessors, (243), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-02 20:10:24,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 20:10:24,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:24,335 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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] [2022-11-02 20:10:24,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:24,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:24,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1627804587, now seen corresponding path program 1 times [2022-11-02 20:10:24,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:24,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002215757] [2022-11-02 20:10:24,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:24,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:10:25,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:10:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:10:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:10:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:10:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:10:25,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:10:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:10:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:10:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:10:25,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:10:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:10:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:10:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:10:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:10:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 20:10:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-02 20:10:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 20:10:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 20:10:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-02 20:10:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:10:25,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 20:10:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-02 20:10:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:10:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:10:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-02 20:10:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:25,742 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-02 20:10:25,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:25,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002215757] [2022-11-02 20:10:25,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002215757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:25,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:25,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:10:25,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169480505] [2022-11-02 20:10:25,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:25,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:10:25,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:25,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:10:25,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:10:25,815 INFO L87 Difference]: Start difference. First operand has 326 states, 197 states have (on average 1.233502538071066) internal successors, (243), 198 states have internal predecessors, (243), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-02 20:10:27,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:27,680 INFO L93 Difference]: Finished difference Result 731 states and 1164 transitions. [2022-11-02 20:10:27,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:10:27,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2022-11-02 20:10:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:27,710 INFO L225 Difference]: With dead ends: 731 [2022-11-02 20:10:27,710 INFO L226 Difference]: Without dead ends: 423 [2022-11-02 20:10:27,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:10:27,723 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 127 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:27,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 647 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:10:27,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-11-02 20:10:27,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 321. [2022-11-02 20:10:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 193 states have (on average 1.2020725388601037) internal successors, (232), 194 states have internal predecessors, (232), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-02 20:10:27,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 439 transitions. [2022-11-02 20:10:27,850 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 439 transitions. Word has length 156 [2022-11-02 20:10:27,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:27,851 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 439 transitions. [2022-11-02 20:10:27,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-02 20:10:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 439 transitions. [2022-11-02 20:10:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 20:10:27,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:27,857 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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] [2022-11-02 20:10:27,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:10:27,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:27,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:27,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1159929871, now seen corresponding path program 1 times [2022-11-02 20:10:27,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:27,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041725393] [2022-11-02 20:10:27,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:27,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:10:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:10:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:10:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:10:28,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:10:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:10:28,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:10:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:10:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:10:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:10:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:10:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:10:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:10:28,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:10:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:10:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 20:10:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-02 20:10:28,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-02 20:10:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-02 20:10:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-02 20:10:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:10:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 20:10:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-02 20:10:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:10:28,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:28,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:10:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:29,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-02 20:10:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2022-11-02 20:10:29,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:29,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041725393] [2022-11-02 20:10:29,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041725393] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:10:29,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844312077] [2022-11-02 20:10:29,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:29,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:29,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:29,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:29,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:10:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:29,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:10:29,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:10:29,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:10:29,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844312077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:29,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:10:29,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-02 20:10:29,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482537293] [2022-11-02 20:10:29,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:29,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:10:29,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:29,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:10:29,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:10:29,933 INFO L87 Difference]: Start difference. First operand 321 states and 439 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-02 20:10:30,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:30,320 INFO L93 Difference]: Finished difference Result 596 states and 820 transitions. [2022-11-02 20:10:30,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:10:30,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2022-11-02 20:10:30,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:30,328 INFO L225 Difference]: With dead ends: 596 [2022-11-02 20:10:30,329 INFO L226 Difference]: Without dead ends: 323 [2022-11-02 20:10:30,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:10:30,336 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 456 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:30,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 1495 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:10:30,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-11-02 20:10:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2022-11-02 20:10:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 194 states have (on average 1.2010309278350515) internal successors, (233), 196 states have internal predecessors, (233), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2022-11-02 20:10:30,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 444 transitions. [2022-11-02 20:10:30,387 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 444 transitions. Word has length 156 [2022-11-02 20:10:30,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:30,388 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 444 transitions. [2022-11-02 20:10:30,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-02 20:10:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 444 transitions. [2022-11-02 20:10:30,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-02 20:10:30,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:30,392 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:30,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:30,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:30,610 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:30,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:30,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1288218285, now seen corresponding path program 1 times [2022-11-02 20:10:30,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:30,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653208701] [2022-11-02 20:10:30,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:30,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:10:31,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:10:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:10:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-02 20:10:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 20:10:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:10:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 20:10:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:10:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:10:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-02 20:10:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:10:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:10:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:10:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:10:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:10:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 20:10:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:10:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-02 20:10:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-02 20:10:31,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-02 20:10:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-02 20:10:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-02 20:10:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-02 20:10:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-02 20:10:31,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-02 20:10:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-02 20:10:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-02 20:10:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:31,825 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2022-11-02 20:10:31,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:31,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653208701] [2022-11-02 20:10:31,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653208701] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:10:31,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636826930] [2022-11-02 20:10:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:31,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:31,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:31,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:31,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:10:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:32,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:10:32,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:32,691 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:10:32,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:10:32,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636826930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:32,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:10:32,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-02 20:10:32,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298379921] [2022-11-02 20:10:32,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:32,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:10:32,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:32,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:10:32,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:10:32,695 INFO L87 Difference]: Start difference. First operand 323 states and 444 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-02 20:10:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:33,321 INFO L93 Difference]: Finished difference Result 619 states and 867 transitions. [2022-11-02 20:10:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:10:33,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2022-11-02 20:10:33,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:33,327 INFO L225 Difference]: With dead ends: 619 [2022-11-02 20:10:33,328 INFO L226 Difference]: Without dead ends: 344 [2022-11-02 20:10:33,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:10:33,332 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 518 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:33,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 2155 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:10:33,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-02 20:10:33,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 342. [2022-11-02 20:10:33,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-02 20:10:33,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-02 20:10:33,374 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 164 [2022-11-02 20:10:33,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:33,375 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-02 20:10:33,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-02 20:10:33,376 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-02 20:10:33,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:10:33,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:33,380 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:33,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:33,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:33,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:33,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:33,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1645223367, now seen corresponding path program 1 times [2022-11-02 20:10:33,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:33,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015571132] [2022-11-02 20:10:33,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:33,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:33,712 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:10:33,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1969165230] [2022-11-02 20:10:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:33,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:33,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:33,715 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:33,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:10:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:34,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:10:34,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:34,611 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:10:34,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:10:34,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:34,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015571132] [2022-11-02 20:10:34,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:10:34,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969165230] [2022-11-02 20:10:34,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969165230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:34,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:34,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:10:34,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555050692] [2022-11-02 20:10:34,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:34,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:10:34,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:34,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:10:34,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:10:34,617 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-02 20:10:35,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:35,118 INFO L93 Difference]: Finished difference Result 644 states and 916 transitions. [2022-11-02 20:10:35,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:10:35,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 179 [2022-11-02 20:10:35,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:35,123 INFO L225 Difference]: With dead ends: 644 [2022-11-02 20:10:35,124 INFO L226 Difference]: Without dead ends: 350 [2022-11-02 20:10:35,126 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:10:35,127 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 480 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:35,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1829 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:10:35,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-11-02 20:10:35,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 342. [2022-11-02 20:10:35,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-02 20:10:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-02 20:10:35,162 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 179 [2022-11-02 20:10:35,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:35,163 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-02 20:10:35,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-02 20:10:35,164 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-02 20:10:35,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-02 20:10:35,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:35,168 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:35,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:35,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:35,385 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:35,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:35,386 INFO L85 PathProgramCache]: Analyzing trace with hash 706739126, now seen corresponding path program 1 times [2022-11-02 20:10:35,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:35,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430193021] [2022-11-02 20:10:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:35,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:35,501 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:10:35,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869809125] [2022-11-02 20:10:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:35,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:35,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:35,504 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:35,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:10:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:10:36,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:10:36,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:36,451 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-02 20:10:36,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:10:36,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:10:36,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430193021] [2022-11-02 20:10:36,452 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:10:36,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869809125] [2022-11-02 20:10:36,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869809125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:10:36,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:10:36,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:10:36,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16195083] [2022-11-02 20:10:36,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:10:36,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:10:36,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:10:36,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:10:36,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:10:36,456 INFO L87 Difference]: Start difference. First operand 342 states and 481 transitions. Second operand has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-02 20:10:37,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:10:37,232 INFO L93 Difference]: Finished difference Result 654 states and 929 transitions. [2022-11-02 20:10:37,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:10:37,233 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 195 [2022-11-02 20:10:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:10:37,238 INFO L225 Difference]: With dead ends: 654 [2022-11-02 20:10:37,238 INFO L226 Difference]: Without dead ends: 360 [2022-11-02 20:10:37,240 INFO L412 NwaCegarLoop]: 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 [2022-11-02 20:10:37,242 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 551 mSDsluCounter, 2087 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 2456 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:10:37,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 2456 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:10:37,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-11-02 20:10:37,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 342. [2022-11-02 20:10:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 210 states have (on average 1.2142857142857142) internal successors, (255), 212 states have internal predecessors, (255), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-02 20:10:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 481 transitions. [2022-11-02 20:10:37,288 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 481 transitions. Word has length 195 [2022-11-02 20:10:37,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:10:37,290 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 481 transitions. [2022-11-02 20:10:37,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.777777777777779) internal successors, (88), 9 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-02 20:10:37,291 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 481 transitions. [2022-11-02 20:10:37,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-02 20:10:37,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:10:37,296 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:10:37,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:10:37,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:37,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:10:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:10:37,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1820952612, now seen corresponding path program 2 times [2022-11-02 20:10:37,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:10:37,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788174686] [2022-11-02 20:10:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:10:37,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:10:37,611 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:10:37,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670181528] [2022-11-02 20:10:37,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:10:37,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:10:37,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:10:37,614 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:10:37,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:10:38,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:10:38,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:10:38,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 245 conjunts are in the unsatisfiable core [2022-11-02 20:10:38,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:10:38,915 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 20:10:39,056 INFO L356 Elim1Store]: treesize reduction 12, result has 78.9 percent of original size [2022-11-02 20:10:39,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 44 treesize of output 60 [2022-11-02 20:10:40,384 INFO L244 Elim1Store]: Index analysis took 111 ms [2022-11-02 20:10:42,213 INFO L356 Elim1Store]: treesize reduction 344, result has 50.1 percent of original size [2022-11-02 20:10:42,214 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 87 select indices, 87 select index equivalence classes, 3655 disjoint index pairs (out of 3741 index pairs), introduced 87 new quantified variables, introduced 86 case distinctions, treesize of input 436 treesize of output 606 [2022-11-02 20:11:08,964 WARN L718 sPolynomialRelations]: Constructing 2147483647(two to the power of 86 dual juncts. [2022-11-02 20:11:08,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:11:08,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788174686] [2022-11-02 20:11:08,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:11:08,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670181528] [2022-11-02 20:11:08,966 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-02 20:11:09,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:09,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:11:09,181 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.OutOfMemoryError: Requested array size exceeds VM limit at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:720) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildBoundConstraint(DualJunctionTir.java:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateConjuncts(DualJunctionTir.java:193) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne(DualJunctionTir.java:142) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminate(DualJunctionTir.java:126) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) [2022-11-02 20:11:09,184 INFO L158 Benchmark]: Toolchain (without parser) took 50781.74ms. Allocated memory was 127.9MB in the beginning and 755.0MB in the end (delta: 627.0MB). Free memory was 82.6MB in the beginning and 266.4MB in the end (delta: -183.8MB). Peak memory consumption was 442.8MB. Max. memory is 16.1GB. [2022-11-02 20:11:09,185 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 100.3MB in the beginning and 100.3MB in the end (delta: 29.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:11:09,185 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3130.52ms. Allocated memory was 127.9MB in the beginning and 163.6MB in the end (delta: 35.7MB). Free memory was 82.3MB in the beginning and 92.9MB in the end (delta: -10.5MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. [2022-11-02 20:11:09,186 INFO L158 Benchmark]: Boogie Procedure Inliner took 269.67ms. Allocated memory is still 163.6MB. Free memory was 92.9MB in the beginning and 82.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:11:09,186 INFO L158 Benchmark]: Boogie Preprocessor took 158.01ms. Allocated memory is still 163.6MB. Free memory was 82.4MB in the beginning and 74.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-02 20:11:09,186 INFO L158 Benchmark]: RCFGBuilder took 2180.13ms. Allocated memory was 163.6MB in the beginning and 226.5MB in the end (delta: 62.9MB). Free memory was 74.0MB in the beginning and 116.5MB in the end (delta: -42.5MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2022-11-02 20:11:09,187 INFO L158 Benchmark]: TraceAbstraction took 45033.02ms. Allocated memory was 226.5MB in the beginning and 755.0MB in the end (delta: 528.5MB). Free memory was 116.5MB in the beginning and 266.4MB in the end (delta: -149.9MB). Peak memory consumption was 377.8MB. Max. memory is 16.1GB. [2022-11-02 20:11:09,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 100.3MB in the beginning and 100.3MB in the end (delta: 29.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3130.52ms. Allocated memory was 127.9MB in the beginning and 163.6MB in the end (delta: 35.7MB). Free memory was 82.3MB in the beginning and 92.9MB in the end (delta: -10.5MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 269.67ms. Allocated memory is still 163.6MB. Free memory was 92.9MB in the beginning and 82.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 158.01ms. Allocated memory is still 163.6MB. Free memory was 82.4MB in the beginning and 74.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 2180.13ms. Allocated memory was 163.6MB in the beginning and 226.5MB in the end (delta: 62.9MB). Free memory was 74.0MB in the beginning and 116.5MB in the end (delta: -42.5MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * TraceAbstraction took 45033.02ms. Allocated memory was 226.5MB in the beginning and 755.0MB in the end (delta: 528.5MB). Free memory was 116.5MB in the beginning and 266.4MB in the end (delta: -149.9MB). Peak memory consumption was 377.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: OutOfMemoryError: Requested array size exceeds VM limit de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: OutOfMemoryError: Requested array size exceeds VM limit: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:720) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-02 20:11:09,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/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_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/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 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- 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 20:11:11,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:11:11,902 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:11:11,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:11:11,959 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:11:11,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:11:11,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:11:11,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:11:11,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:11:11,984 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:11:11,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:11:11,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:11:11,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:11:11,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:11:11,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:11:12,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:11:12,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:11:12,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:11:12,007 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:11:12,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:11:12,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:11:12,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:11:12,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:11:12,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:11:12,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:11:12,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:11:12,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:11:12,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:11:12,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:11:12,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:11:12,039 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:11:12,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:11:12,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:11:12,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:11:12,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:11:12,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:11:12,047 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:11:12,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:11:12,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:11:12,049 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:11:12,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:11:12,051 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 20:11:12,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:11:12,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:11:12,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:11:12,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:11:12,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:11:12,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:11:12,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:11:12,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:11:12,112 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:11:12,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:11:12,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:11:12,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:11:12,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:11:12,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:11:12,115 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 20:11:12,115 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 20:11:12,115 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 20:11:12,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:11:12,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:11:12,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:11:12,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:11:12,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:11:12,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:11:12,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:11:12,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:11:12,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:11:12,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:11:12,119 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 20:11:12,119 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 20:11:12,119 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:11:12,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:11:12,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:11:12,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 20:11:12,120 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_52d959e6-5087-4a76-90d3-528cf7032c4a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2022-11-02 20:11:12,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:11:12,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:11:12,540 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:11:12,542 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:11:12,544 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:11:12,546 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-02 20:11:12,645 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/data/20b31f3cc/e919571810764b3b8c5671d38b70c30d/FLAGfe2e4622c [2022-11-02 20:11:13,705 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:11:13,706 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2022-11-02 20:11:13,762 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/data/20b31f3cc/e919571810764b3b8c5671d38b70c30d/FLAGfe2e4622c [2022-11-02 20:11:14,135 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/data/20b31f3cc/e919571810764b3b8c5671d38b70c30d [2022-11-02 20:11:14,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:11:14,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:11:14,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:11:14,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:11:14,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:11:14,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:11:14" (1/1) ... [2022-11-02 20:11:14,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1210501d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:14, skipping insertion in model container [2022-11-02 20:11:14,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:11:14" (1/1) ... [2022-11-02 20:11:14,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:11:14,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:11:14,629 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_52d959e6-5087-4a76-90d3-528cf7032c4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-02 20:11:14,637 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_52d959e6-5087-4a76-90d3-528cf7032c4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-02 20:11:15,936 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:15,937 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:15,938 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:15,946 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:15,947 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:15,966 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:15,971 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:15,976 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:15,977 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:15,983 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:15,986 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:15,987 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:15,989 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,520 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:11:16,522 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:11:16,523 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:11:16,524 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:11:16,525 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:11:16,526 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:11:16,527 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:11:16,528 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:11:16,529 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:11:16,530 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:11:16,740 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:11:16,772 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,773 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,780 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,792 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,884 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,885 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,886 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,887 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,887 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,888 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,889 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,890 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,891 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,891 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,892 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,893 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,893 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,897 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,898 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,899 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,899 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,905 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,906 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,919 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,924 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,925 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:16,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:11:17,022 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-02 20:11:17,057 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:11:17,062 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_52d959e6-5087-4a76-90d3-528cf7032c4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-02 20:11:17,063 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_52d959e6-5087-4a76-90d3-528cf7032c4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-02 20:11:17,105 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,106 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,106 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,107 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,108 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,134 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,135 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,136 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,136 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,138 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,139 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,139 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,140 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,225 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:11:17,226 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:11:17,227 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:11:17,228 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:11:17,230 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:11:17,230 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:11:17,233 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:11:17,236 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:11:17,238 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:11:17,238 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:11:17,299 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:11:17,331 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,332 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,333 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,341 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,404 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,405 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,405 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,406 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,407 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,408 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,408 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,410 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,411 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,411 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,413 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,414 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,414 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,415 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,417 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,418 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,418 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,423 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,423 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,436 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,439 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,439 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:11:17,491 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:11:17,523 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_52d959e6-5087-4a76-90d3-528cf7032c4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2022-11-02 20:11:17,524 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_52d959e6-5087-4a76-90d3-528cf7032c4a/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2022-11-02 20:11:17,569 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,570 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,571 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,572 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,572 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,579 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,579 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,581 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,581 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,583 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,584 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,585 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,585 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,663 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:11:17,664 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:11:17,665 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:11:17,666 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:11:17,667 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:11:17,668 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:11:17,669 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:11:17,670 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:11:17,670 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:11:17,671 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:11:17,700 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:11:17,727 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,727 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,729 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,739 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,784 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,785 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,785 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,786 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,786 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,787 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,787 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,788 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,789 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,789 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,790 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,792 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,795 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,796 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,797 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,797 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,798 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,802 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,802 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,817 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,818 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,823 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:11:17,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:11:18,239 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:11:18,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18 WrapperNode [2022-11-02 20:11:18,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:11:18,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:11:18,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:11:18,242 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:11:18,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18" (1/1) ... [2022-11-02 20:11:18,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18" (1/1) ... [2022-11-02 20:11:18,518 INFO L138 Inliner]: procedures = 717, calls = 1905, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 834 [2022-11-02 20:11:18,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:11:18,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:11:18,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:11:18,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:11:18,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18" (1/1) ... [2022-11-02 20:11:18,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18" (1/1) ... [2022-11-02 20:11:18,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18" (1/1) ... [2022-11-02 20:11:18,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18" (1/1) ... [2022-11-02 20:11:18,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18" (1/1) ... [2022-11-02 20:11:18,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18" (1/1) ... [2022-11-02 20:11:18,644 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18" (1/1) ... [2022-11-02 20:11:18,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18" (1/1) ... [2022-11-02 20:11:18,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:11:18,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:11:18,666 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:11:18,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:11:18,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18" (1/1) ... [2022-11-02 20:11:18,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:11:18,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:11:18,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:11:18,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:11:18,767 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-02 20:11:18,768 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-02 20:11:18,768 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-02 20:11:18,768 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-02 20:11:18,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:11:18,769 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-02 20:11:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-02 20:11:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-02 20:11:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-02 20:11:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-02 20:11:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-02 20:11:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-02 20:11:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-02 20:11:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-02 20:11:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-02 20:11:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-02 20:11:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:11:18,771 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:11:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-02 20:11:18,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~C_INT [2022-11-02 20:11:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:11:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:11:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:11:18,772 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-02 20:11:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-02 20:11:18,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:11:18,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:11:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-02 20:11:18,774 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-02 20:11:18,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-02 20:11:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-02 20:11:18,775 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-11-02 20:11:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-11-02 20:11:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-02 20:11:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-02 20:11:18,777 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-02 20:11:18,777 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-02 20:11:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-02 20:11:18,778 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-02 20:11:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-02 20:11:18,778 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-02 20:11:18,778 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:11:18,778 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:11:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-02 20:11:18,779 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-02 20:11:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:11:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:11:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-02 20:11:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-02 20:11:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2022-11-02 20:11:18,780 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2022-11-02 20:11:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:11:18,780 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-02 20:11:18,781 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-02 20:11:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-02 20:11:18,781 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-02 20:11:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-02 20:11:18,781 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-02 20:11:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-02 20:11:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-02 20:11:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-02 20:11:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-02 20:11:19,414 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:11:19,419 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:11:22,789 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:11:22,808 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:11:22,808 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-02 20:11:22,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:11:22 BoogieIcfgContainer [2022-11-02 20:11:22,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:11:22,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:11:22,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:11:22,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:11:22,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:11:14" (1/3) ... [2022-11-02 20:11:22,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efef3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:11:22, skipping insertion in model container [2022-11-02 20:11:22,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:11:18" (2/3) ... [2022-11-02 20:11:22,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efef3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:11:22, skipping insertion in model container [2022-11-02 20:11:22,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:11:22" (3/3) ... [2022-11-02 20:11:22,834 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2022-11-02 20:11:22,861 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:11:22,862 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:11:22,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:11:22,958 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;@5fbd3b6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:11:22,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:11:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 195 states have (on average 1.235897435897436) internal successors, (241), 196 states have internal predecessors, (241), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2022-11-02 20:11:23,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 20:11:23,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:23,009 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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] [2022-11-02 20:11:23,010 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:23,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:23,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1926734945, now seen corresponding path program 1 times [2022-11-02 20:11:23,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:23,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284135949] [2022-11-02 20:11:23,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:23,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:23,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:23,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:23,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 20:11:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:24,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-02 20:11:24,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:24,246 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-02 20:11:24,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:24,247 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:24,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284135949] [2022-11-02 20:11:24,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284135949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:24,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:24,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:11:24,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182226341] [2022-11-02 20:11:24,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:24,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:11:24,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:24,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:11:24,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:11:24,315 INFO L87 Difference]: Start difference. First operand has 324 states, 195 states have (on average 1.235897435897436) internal successors, (241), 196 states have internal predecessors, (241), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-02 20:11:24,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:24,456 INFO L93 Difference]: Finished difference Result 625 states and 944 transitions. [2022-11-02 20:11:24,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:11:24,459 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2022-11-02 20:11:24,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:24,500 INFO L225 Difference]: With dead ends: 625 [2022-11-02 20:11:24,500 INFO L226 Difference]: Without dead ends: 319 [2022-11-02 20:11:24,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:11:24,517 INFO L413 NwaCegarLoop]: 442 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, 442 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 [2022-11-02 20:11:24,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:11:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-02 20:11:24,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-11-02 20:11:24,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 191 states have (on average 1.2041884816753927) internal successors, (230), 192 states have internal predecessors, (230), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-02 20:11:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 437 transitions. [2022-11-02 20:11:24,610 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 437 transitions. Word has length 156 [2022-11-02 20:11:24,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:24,613 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 437 transitions. [2022-11-02 20:11:24,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-02 20:11:24,613 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 437 transitions. [2022-11-02 20:11:24,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 20:11:24,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:24,621 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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] [2022-11-02 20:11:24,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-02 20:11:24,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:24,845 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:24,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:24,846 INFO L85 PathProgramCache]: Analyzing trace with hash -860999513, now seen corresponding path program 1 times [2022-11-02 20:11:24,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:24,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388757646] [2022-11-02 20:11:24,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:24,851 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:24,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:24,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:24,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 20:11:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:25,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 1447 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:11:25,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:26,302 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:11:26,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:26,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:26,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388757646] [2022-11-02 20:11:26,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388757646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:26,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:26,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:11:26,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075629640] [2022-11-02 20:11:26,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:26,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:11:26,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:26,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:11:26,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:11:26,309 INFO L87 Difference]: Start difference. First operand 319 states and 437 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-02 20:11:26,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:26,853 INFO L93 Difference]: Finished difference Result 592 states and 816 transitions. [2022-11-02 20:11:26,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:11:26,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2022-11-02 20:11:26,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:26,865 INFO L225 Difference]: With dead ends: 592 [2022-11-02 20:11:26,865 INFO L226 Difference]: Without dead ends: 321 [2022-11-02 20:11:26,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:11:26,869 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 47 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:26,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1574 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:11:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-02 20:11:26,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-11-02 20:11:26,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 192 states have (on average 1.203125) internal successors, (231), 194 states have internal predecessors, (231), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2022-11-02 20:11:26,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 442 transitions. [2022-11-02 20:11:26,942 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 442 transitions. Word has length 156 [2022-11-02 20:11:26,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:26,944 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 442 transitions. [2022-11-02 20:11:26,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-11-02 20:11:26,945 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 442 transitions. [2022-11-02 20:11:26,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-02 20:11:26,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:26,952 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:26,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:27,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:27,189 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:27,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:27,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1740163981, now seen corresponding path program 1 times [2022-11-02 20:11:27,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:27,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102001923] [2022-11-02 20:11:27,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:27,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:27,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:27,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:27,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 20:11:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:28,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:11:28,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:28,562 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:11:28,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:28,563 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:28,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102001923] [2022-11-02 20:11:28,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102001923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:28,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:28,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:11:28,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535267801] [2022-11-02 20:11:28,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:28,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:11:28,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:28,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:11:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:11:28,566 INFO L87 Difference]: Start difference. First operand 321 states and 442 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-02 20:11:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:29,785 INFO L93 Difference]: Finished difference Result 615 states and 863 transitions. [2022-11-02 20:11:29,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:11:29,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2022-11-02 20:11:29,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:29,790 INFO L225 Difference]: With dead ends: 615 [2022-11-02 20:11:29,791 INFO L226 Difference]: Without dead ends: 342 [2022-11-02 20:11:29,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:11:29,794 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 99 mSDsluCounter, 1876 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:29,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 2276 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-02 20:11:29,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-11-02 20:11:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 340. [2022-11-02 20:11:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 208 states have (on average 1.2163461538461537) internal successors, (253), 210 states have internal predecessors, (253), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-02 20:11:29,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 479 transitions. [2022-11-02 20:11:29,860 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 479 transitions. Word has length 164 [2022-11-02 20:11:29,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:29,863 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 479 transitions. [2022-11-02 20:11:29,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-02 20:11:29,864 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 479 transitions. [2022-11-02 20:11:29,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:11:29,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:29,869 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:29,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:30,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:30,086 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:30,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:30,086 INFO L85 PathProgramCache]: Analyzing trace with hash 2064550921, now seen corresponding path program 1 times [2022-11-02 20:11:30,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:30,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052861319] [2022-11-02 20:11:30,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:30,091 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:30,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:30,092 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:30,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 20:11:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:31,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1589 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:11:31,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:31,916 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-11-02 20:11:31,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:31,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:31,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052861319] [2022-11-02 20:11:31,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1052861319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:31,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:31,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:11:31,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205791525] [2022-11-02 20:11:31,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:31,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:11:31,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:31,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:11:31,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:11:31,922 INFO L87 Difference]: Start difference. First operand 340 states and 479 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-02 20:11:32,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:32,689 INFO L93 Difference]: Finished difference Result 640 states and 912 transitions. [2022-11-02 20:11:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:11:32,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 179 [2022-11-02 20:11:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:32,694 INFO L225 Difference]: With dead ends: 640 [2022-11-02 20:11:32,695 INFO L226 Difference]: Without dead ends: 348 [2022-11-02 20:11:32,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:11:32,698 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 70 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1931 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:32,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1931 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-02 20:11:32,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-02 20:11:32,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 340. [2022-11-02 20:11:32,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 208 states have (on average 1.2163461538461537) internal successors, (253), 210 states have internal predecessors, (253), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2022-11-02 20:11:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 479 transitions. [2022-11-02 20:11:32,726 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 479 transitions. Word has length 179 [2022-11-02 20:11:32,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:32,727 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 479 transitions. [2022-11-02 20:11:32,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2022-11-02 20:11:32,728 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 479 transitions. [2022-11-02 20:11:32,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-02 20:11:32,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:32,731 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:32,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:32,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:32,953 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:32,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:32,953 INFO L85 PathProgramCache]: Analyzing trace with hash 587208436, now seen corresponding path program 1 times [2022-11-02 20:11:32,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:32,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111191404] [2022-11-02 20:11:32,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:32,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:32,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:32,957 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:32,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 20:11:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:34,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:11:34,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-11-02 20:11:34,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:34,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:34,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111191404] [2022-11-02 20:11:34,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111191404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:34,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:34,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:11:34,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920884733] [2022-11-02 20:11:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:34,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:11:34,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:34,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:11:34,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:11:34,661 INFO L87 Difference]: Start difference. First operand 340 states and 479 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-02 20:11:36,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:36,445 INFO L93 Difference]: Finished difference Result 662 states and 941 transitions. [2022-11-02 20:11:36,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:11:36,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 195 [2022-11-02 20:11:36,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:36,450 INFO L225 Difference]: With dead ends: 662 [2022-11-02 20:11:36,450 INFO L226 Difference]: Without dead ends: 370 [2022-11-02 20:11:36,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:11:36,455 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 142 mSDsluCounter, 2240 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:36,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2641 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-02 20:11:36,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-11-02 20:11:36,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 352. [2022-11-02 20:11:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 218 states have (on average 1.224770642201835) internal successors, (267), 220 states have internal predecessors, (267), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2022-11-02 20:11:36,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 495 transitions. [2022-11-02 20:11:36,484 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 495 transitions. Word has length 195 [2022-11-02 20:11:36,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:36,485 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 495 transitions. [2022-11-02 20:11:36,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-02 20:11:36,486 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 495 transitions. [2022-11-02 20:11:36,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-02 20:11:36,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:36,490 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:36,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:36,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:36,705 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:36,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:36,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1829094874, now seen corresponding path program 2 times [2022-11-02 20:11:36,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:36,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87950813] [2022-11-02 20:11:36,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:11:36,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:36,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:36,709 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:36,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 20:11:41,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:11:41,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:11:41,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1749 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:11:41,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-02 20:11:42,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:42,015 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:42,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87950813] [2022-11-02 20:11:42,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87950813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:42,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:42,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:11:42,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480303667] [2022-11-02 20:11:42,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:42,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:11:42,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:42,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:11:42,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:11:42,018 INFO L87 Difference]: Start difference. First operand 352 states and 495 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-02 20:11:46,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:46,650 INFO L93 Difference]: Finished difference Result 692 states and 993 transitions. [2022-11-02 20:11:46,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:11:46,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2022-11-02 20:11:46,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:46,657 INFO L225 Difference]: With dead ends: 692 [2022-11-02 20:11:46,657 INFO L226 Difference]: Without dead ends: 388 [2022-11-02 20:11:46,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:11:46,660 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 21 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2016 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:46,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2016 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-02 20:11:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-11-02 20:11:46,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 360. [2022-11-02 20:11:46,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 226 states have (on average 1.2256637168141593) internal successors, (277), 228 states have internal predecessors, (277), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2022-11-02 20:11:46,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 505 transitions. [2022-11-02 20:11:46,684 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 505 transitions. Word has length 210 [2022-11-02 20:11:46,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:46,685 INFO L495 AbstractCegarLoop]: Abstraction has 360 states and 505 transitions. [2022-11-02 20:11:46,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-02 20:11:46,686 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 505 transitions. [2022-11-02 20:11:46,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-02 20:11:46,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:46,691 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:46,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:46,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:46,908 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:46,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:46,909 INFO L85 PathProgramCache]: Analyzing trace with hash -731767972, now seen corresponding path program 1 times [2022-11-02 20:11:46,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:46,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1066912059] [2022-11-02 20:11:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:46,911 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:46,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:46,913 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:46,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 20:11:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:48,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 1747 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:11:48,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:11:49,292 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-02 20:11:49,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:11:49,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:11:49,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1066912059] [2022-11-02 20:11:49,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1066912059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:11:49,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:11:49,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:11:49,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942116696] [2022-11-02 20:11:49,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:11:49,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:11:49,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:11:49,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:11:49,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:11:49,295 INFO L87 Difference]: Start difference. First operand 360 states and 505 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-02 20:11:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:11:54,310 INFO L93 Difference]: Finished difference Result 702 states and 1003 transitions. [2022-11-02 20:11:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:11:54,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2022-11-02 20:11:54,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:11:54,316 INFO L225 Difference]: With dead ends: 702 [2022-11-02 20:11:54,316 INFO L226 Difference]: Without dead ends: 390 [2022-11-02 20:11:54,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:11:54,320 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 17 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:11:54,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2438 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-02 20:11:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-02 20:11:54,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 364. [2022-11-02 20:11:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 230 states have (on average 1.2217391304347827) internal successors, (281), 232 states have internal predecessors, (281), 107 states have call successors, (107), 24 states have call predecessors, (107), 26 states have return successors, (121), 107 states have call predecessors, (121), 106 states have call successors, (121) [2022-11-02 20:11:54,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 509 transitions. [2022-11-02 20:11:54,358 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 509 transitions. Word has length 210 [2022-11-02 20:11:54,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:11:54,359 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 509 transitions. [2022-11-02 20:11:54,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-02 20:11:54,359 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 509 transitions. [2022-11-02 20:11:54,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-02 20:11:54,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:11:54,363 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:11:54,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:11:54,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:11:54,585 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:11:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:11:54,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1652156766, now seen corresponding path program 1 times [2022-11-02 20:11:54,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:11:54,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [862796069] [2022-11-02 20:11:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:11:54,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:11:54,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:11:54,589 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:11:54,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 20:11:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:11:56,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1744 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-02 20:11:56,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:10,619 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 31 treesize of output 19 [2022-11-02 20:12:10,628 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 25 treesize of output 13 [2022-11-02 20:12:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-02 20:12:12,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:12,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:12,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [862796069] [2022-11-02 20:12:12,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [862796069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:12,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:12,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:12:12,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273908080] [2022-11-02 20:12:12,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:12,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:12:12,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:12,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:12:12,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=87, Unknown=1, NotChecked=0, Total=110 [2022-11-02 20:12:12,610 INFO L87 Difference]: Start difference. First operand 364 states and 509 transitions. Second operand has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-02 20:12:21,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:12:23,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:12:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:24,687 INFO L93 Difference]: Finished difference Result 693 states and 981 transitions. [2022-11-02 20:12:24,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:12:24,690 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 210 [2022-11-02 20:12:24,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:24,694 INFO L225 Difference]: With dead ends: 693 [2022-11-02 20:12:24,694 INFO L226 Difference]: Without dead ends: 408 [2022-11-02 20:12:24,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=70, Invalid=233, Unknown=3, NotChecked=0, Total=306 [2022-11-02 20:12:24,699 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 74 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 81 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:24,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3151 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 360 Invalid, 2 Unknown, 81 Unchecked, 6.7s Time] [2022-11-02 20:12:24,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-11-02 20:12:24,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 390. [2022-11-02 20:12:24,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 250 states have (on average 1.216) internal successors, (304), 252 states have internal predecessors, (304), 110 states have call successors, (110), 26 states have call predecessors, (110), 29 states have return successors, (130), 111 states have call predecessors, (130), 109 states have call successors, (130) [2022-11-02 20:12:24,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 544 transitions. [2022-11-02 20:12:24,742 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 544 transitions. Word has length 210 [2022-11-02 20:12:24,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:24,748 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 544 transitions. [2022-11-02 20:12:24,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.0) internal successors, (88), 11 states have internal predecessors, (88), 5 states have call successors, (31), 3 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2022-11-02 20:12:24,748 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 544 transitions. [2022-11-02 20:12:24,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-02 20:12:24,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:24,753 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:24,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:24,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:12:24,976 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:24,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:24,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1856160476, now seen corresponding path program 1 times [2022-11-02 20:12:24,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:24,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557086036] [2022-11-02 20:12:24,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:24,979 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:24,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:24,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:24,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 20:12:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:26,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:12:26,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-11-02 20:12:26,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:26,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:26,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557086036] [2022-11-02 20:12:26,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557086036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:26,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:26,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:12:26,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495019062] [2022-11-02 20:12:26,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:26,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:12:26,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:26,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:12:26,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:12:26,648 INFO L87 Difference]: Start difference. First operand 390 states and 544 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-02 20:12:26,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:26,833 INFO L93 Difference]: Finished difference Result 738 states and 1052 transitions. [2022-11-02 20:12:26,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:12:26,833 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 210 [2022-11-02 20:12:26,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:26,838 INFO L225 Difference]: With dead ends: 738 [2022-11-02 20:12:26,838 INFO L226 Difference]: Without dead ends: 410 [2022-11-02 20:12:26,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:12:26,841 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 8 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:26,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1782 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:12:26,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-02 20:12:26,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 398. [2022-11-02 20:12:26,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 258 states have (on average 1.2131782945736433) internal successors, (313), 260 states have internal predecessors, (313), 110 states have call successors, (110), 26 states have call predecessors, (110), 29 states have return successors, (130), 111 states have call predecessors, (130), 109 states have call successors, (130) [2022-11-02 20:12:26,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 553 transitions. [2022-11-02 20:12:26,870 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 553 transitions. Word has length 210 [2022-11-02 20:12:26,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:26,871 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 553 transitions. [2022-11-02 20:12:26,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-02 20:12:26,872 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 553 transitions. [2022-11-02 20:12:26,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-11-02 20:12:26,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:26,874 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:26,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:27,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:12:27,089 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:27,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:27,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1292849073, now seen corresponding path program 1 times [2022-11-02 20:12:27,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:27,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736411616] [2022-11-02 20:12:27,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:27,092 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:27,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:27,099 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:27,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 20:12:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:28,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 1746 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:12:28,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:28,973 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-02 20:12:28,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:28,974 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:28,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736411616] [2022-11-02 20:12:28,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736411616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:28,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:28,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:12:28,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726553935] [2022-11-02 20:12:28,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:28,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:12:28,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:28,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:12:28,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:12:28,976 INFO L87 Difference]: Start difference. First operand 398 states and 553 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-02 20:12:29,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:29,895 INFO L93 Difference]: Finished difference Result 702 states and 987 transitions. [2022-11-02 20:12:29,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:12:29,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 212 [2022-11-02 20:12:29,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:29,902 INFO L225 Difference]: With dead ends: 702 [2022-11-02 20:12:29,902 INFO L226 Difference]: Without dead ends: 400 [2022-11-02 20:12:29,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:12:29,906 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 82 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2284 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:29,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 2284 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:12:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-02 20:12:29,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2022-11-02 20:12:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 259 states have (on average 1.2123552123552124) internal successors, (314), 262 states have internal predecessors, (314), 110 states have call successors, (110), 26 states have call predecessors, (110), 30 states have return successors, (132), 111 states have call predecessors, (132), 109 states have call successors, (132) [2022-11-02 20:12:29,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 556 transitions. [2022-11-02 20:12:29,936 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 556 transitions. Word has length 212 [2022-11-02 20:12:29,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:29,937 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 556 transitions. [2022-11-02 20:12:29,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-02 20:12:29,937 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 556 transitions. [2022-11-02 20:12:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-11-02 20:12:29,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:29,939 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:29,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:30,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:12:30,153 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:30,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:30,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1705802895, now seen corresponding path program 1 times [2022-11-02 20:12:30,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:30,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549403914] [2022-11-02 20:12:30,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:30,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:30,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:30,159 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:30,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 20:12:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:32,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 1888 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:12:32,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-11-02 20:12:32,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:32,604 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:32,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549403914] [2022-11-02 20:12:32,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549403914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:32,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:32,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:12:32,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783059781] [2022-11-02 20:12:32,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:32,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:12:32,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:32,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:12:32,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:12:32,607 INFO L87 Difference]: Start difference. First operand 400 states and 556 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2022-11-02 20:12:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:33,991 INFO L93 Difference]: Finished difference Result 707 states and 994 transitions. [2022-11-02 20:12:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:12:33,992 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) Word has length 235 [2022-11-02 20:12:33,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:33,995 INFO L225 Difference]: With dead ends: 707 [2022-11-02 20:12:33,996 INFO L226 Difference]: Without dead ends: 403 [2022-11-02 20:12:33,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 231 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:12:33,998 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 105 mSDsluCounter, 2210 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:33,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 2615 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-02 20:12:34,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-02 20:12:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2022-11-02 20:12:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 260 states have (on average 1.2115384615384615) internal successors, (315), 263 states have internal predecessors, (315), 110 states have call successors, (110), 26 states have call predecessors, (110), 30 states have return successors, (132), 111 states have call predecessors, (132), 109 states have call successors, (132) [2022-11-02 20:12:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 557 transitions. [2022-11-02 20:12:34,040 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 557 transitions. Word has length 235 [2022-11-02 20:12:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:34,040 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 557 transitions. [2022-11-02 20:12:34,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 5 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2022-11-02 20:12:34,041 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 557 transitions. [2022-11-02 20:12:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-11-02 20:12:34,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:34,043 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:34,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:34,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:12:34,265 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:34,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:34,265 INFO L85 PathProgramCache]: Analyzing trace with hash -192715456, now seen corresponding path program 1 times [2022-11-02 20:12:34,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:34,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1327894202] [2022-11-02 20:12:34,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:34,268 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:34,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:34,270 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:34,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 20:12:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:36,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:12:36,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:36,829 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 140 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-02 20:12:36,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:36,830 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:36,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1327894202] [2022-11-02 20:12:36,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1327894202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:36,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:36,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:12:36,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108026978] [2022-11-02 20:12:36,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:36,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:12:36,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:36,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:12:36,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:12:36,833 INFO L87 Difference]: Start difference. First operand 401 states and 557 transitions. Second operand has 10 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-02 20:12:39,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:39,490 INFO L93 Difference]: Finished difference Result 708 states and 993 transitions. [2022-11-02 20:12:39,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:12:39,491 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) Word has length 251 [2022-11-02 20:12:39,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:39,494 INFO L225 Difference]: With dead ends: 708 [2022-11-02 20:12:39,495 INFO L226 Difference]: Without dead ends: 403 [2022-11-02 20:12:39,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:12:39,497 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 177 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 3283 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:39,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 3283 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-02 20:12:39,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-02 20:12:39,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 398. [2022-11-02 20:12:39,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 258 states have (on average 1.2131782945736433) internal successors, (313), 260 states have internal predecessors, (313), 110 states have call successors, (110), 26 states have call predecessors, (110), 29 states have return successors, (128), 111 states have call predecessors, (128), 109 states have call successors, (128) [2022-11-02 20:12:39,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 551 transitions. [2022-11-02 20:12:39,524 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 551 transitions. Word has length 251 [2022-11-02 20:12:39,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:39,526 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 551 transitions. [2022-11-02 20:12:39,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.333333333333334) internal successors, (102), 9 states have internal predecessors, (102), 6 states have call successors, (33), 3 states have call predecessors, (33), 4 states have return successors, (30), 5 states have call predecessors, (30), 6 states have call successors, (30) [2022-11-02 20:12:39,527 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 551 transitions. [2022-11-02 20:12:39,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-02 20:12:39,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:39,529 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:39,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:39,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:12:39,749 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:39,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:39,750 INFO L85 PathProgramCache]: Analyzing trace with hash -556391816, now seen corresponding path program 2 times [2022-11-02 20:12:39,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:39,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754846007] [2022-11-02 20:12:39,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:12:39,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:39,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:39,753 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:39,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 20:12:44,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:12:44,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:12:44,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 2043 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:12:44,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:45,185 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-02 20:12:45,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:45,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:45,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754846007] [2022-11-02 20:12:45,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754846007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:45,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:45,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:12:45,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343707254] [2022-11-02 20:12:45,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:45,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:12:45,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:45,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:12:45,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:12:45,188 INFO L87 Difference]: Start difference. First operand 398 states and 551 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-02 20:12:46,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:12:46,834 INFO L93 Difference]: Finished difference Result 707 states and 991 transitions. [2022-11-02 20:12:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:12:46,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 266 [2022-11-02 20:12:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:12:46,840 INFO L225 Difference]: With dead ends: 707 [2022-11-02 20:12:46,840 INFO L226 Difference]: Without dead ends: 410 [2022-11-02 20:12:46,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:12:46,843 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 79 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:12:46,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 3003 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:12:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-11-02 20:12:46,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-11-02 20:12:46,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 264 states have (on average 1.2121212121212122) internal successors, (320), 266 states have internal predecessors, (320), 115 states have call successors, (115), 27 states have call predecessors, (115), 30 states have return successors, (133), 116 states have call predecessors, (133), 114 states have call successors, (133) [2022-11-02 20:12:46,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 568 transitions. [2022-11-02 20:12:46,873 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 568 transitions. Word has length 266 [2022-11-02 20:12:46,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:12:46,874 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 568 transitions. [2022-11-02 20:12:46,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 7 states have internal predecessors, (80), 5 states have call successors, (31), 4 states have call predecessors, (31), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-02 20:12:46,874 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 568 transitions. [2022-11-02 20:12:46,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-02 20:12:46,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:12:46,877 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:12:46,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:12:47,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:12:47,101 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:12:47,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:12:47,101 INFO L85 PathProgramCache]: Analyzing trace with hash 414007608, now seen corresponding path program 1 times [2022-11-02 20:12:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:12:47,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675660825] [2022-11-02 20:12:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:12:47,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:12:47,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:12:47,107 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:12:47,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 20:12:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:12:54,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 2267 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:12:54,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:12:54,740 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:12:54,740 INFO L390 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 132 treesize of output 36 [2022-11-02 20:12:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-02 20:12:54,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:12:54,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:12:54,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675660825] [2022-11-02 20:12:54,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675660825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:12:54,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:12:54,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:12:54,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792217697] [2022-11-02 20:12:54,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:12:54,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:12:54,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:12:54,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:12:54,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:12:54,972 INFO L87 Difference]: Start difference. First operand 410 states and 568 transitions. Second operand has 8 states, 7 states have (on average 16.142857142857142) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-02 20:13:02,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:02,517 INFO L93 Difference]: Finished difference Result 730 states and 1023 transitions. [2022-11-02 20:13:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:13:02,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 16.142857142857142) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 296 [2022-11-02 20:13:02,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:02,525 INFO L225 Difference]: With dead ends: 730 [2022-11-02 20:13:02,525 INFO L226 Difference]: Without dead ends: 413 [2022-11-02 20:13:02,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:13:02,528 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 5 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:02,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2640 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 379 Invalid, 0 Unknown, 36 Unchecked, 5.2s Time] [2022-11-02 20:13:02,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-02 20:13:02,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 412. [2022-11-02 20:13:02,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 266 states have (on average 1.2105263157894737) internal successors, (322), 268 states have internal predecessors, (322), 115 states have call successors, (115), 27 states have call predecessors, (115), 30 states have return successors, (133), 116 states have call predecessors, (133), 114 states have call successors, (133) [2022-11-02 20:13:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 570 transitions. [2022-11-02 20:13:02,561 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 570 transitions. Word has length 296 [2022-11-02 20:13:02,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:02,562 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 570 transitions. [2022-11-02 20:13:02,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 16.142857142857142) internal successors, (113), 8 states have internal predecessors, (113), 3 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-02 20:13:02,562 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 570 transitions. [2022-11-02 20:13:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-02 20:13:02,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:02,566 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:02,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:02,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:02,789 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:02,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:02,790 INFO L85 PathProgramCache]: Analyzing trace with hash -643816991, now seen corresponding path program 1 times [2022-11-02 20:13:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:02,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058232405] [2022-11-02 20:13:02,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:02,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:02,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:02,796 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:02,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 20:13:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:05,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:13:05,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:05,217 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-02 20:13:05,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:05,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:05,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058232405] [2022-11-02 20:13:05,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058232405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:05,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:05,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:13:05,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068496246] [2022-11-02 20:13:05,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:05,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:13:05,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:05,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:13:05,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:13:05,221 INFO L87 Difference]: Start difference. First operand 412 states and 570 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-02 20:13:05,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:05,378 INFO L93 Difference]: Finished difference Result 770 states and 1090 transitions. [2022-11-02 20:13:05,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:13:05,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 301 [2022-11-02 20:13:05,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:05,384 INFO L225 Difference]: With dead ends: 770 [2022-11-02 20:13:05,384 INFO L226 Difference]: Without dead ends: 417 [2022-11-02 20:13:05,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:05,387 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 7 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:05,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1286 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:05,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-11-02 20:13:05,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 413. [2022-11-02 20:13:05,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 267 states have (on average 1.2097378277153559) internal successors, (323), 269 states have internal predecessors, (323), 115 states have call successors, (115), 27 states have call predecessors, (115), 30 states have return successors, (133), 116 states have call predecessors, (133), 114 states have call successors, (133) [2022-11-02 20:13:05,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 571 transitions. [2022-11-02 20:13:05,419 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 571 transitions. Word has length 301 [2022-11-02 20:13:05,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:05,420 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 571 transitions. [2022-11-02 20:13:05,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (36), 2 states have call predecessors, (36), 3 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-11-02 20:13:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 571 transitions. [2022-11-02 20:13:05,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2022-11-02 20:13:05,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:05,434 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:05,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:05,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:05,654 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:05,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:05,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1264414986, now seen corresponding path program 1 times [2022-11-02 20:13:05,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:05,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790328941] [2022-11-02 20:13:05,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:05,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:05,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:05,659 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:05,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 20:13:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:08,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 2283 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:13:08,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:08,271 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-11-02 20:13:08,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:08,272 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:08,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790328941] [2022-11-02 20:13:08,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790328941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:08,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:08,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:13:08,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959879937] [2022-11-02 20:13:08,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:08,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:13:08,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:08,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:13:08,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:13:08,275 INFO L87 Difference]: Start difference. First operand 413 states and 571 transitions. Second operand has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-02 20:13:09,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:09,190 INFO L93 Difference]: Finished difference Result 778 states and 1085 transitions. [2022-11-02 20:13:09,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:13:09,191 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) Word has length 301 [2022-11-02 20:13:09,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:09,196 INFO L225 Difference]: With dead ends: 778 [2022-11-02 20:13:09,196 INFO L226 Difference]: Without dead ends: 427 [2022-11-02 20:13:09,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:13:09,199 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 4 mSDsluCounter, 3243 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 3660 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:09,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 3660 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:13:09,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-11-02 20:13:09,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 420. [2022-11-02 20:13:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 272 states have (on average 1.2058823529411764) internal successors, (328), 275 states have internal predecessors, (328), 115 states have call successors, (115), 27 states have call predecessors, (115), 32 states have return successors, (142), 117 states have call predecessors, (142), 114 states have call successors, (142) [2022-11-02 20:13:09,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 585 transitions. [2022-11-02 20:13:09,234 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 585 transitions. Word has length 301 [2022-11-02 20:13:09,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:09,234 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 585 transitions. [2022-11-02 20:13:09,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.11111111111111) internal successors, (118), 8 states have internal predecessors, (118), 3 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2022-11-02 20:13:09,235 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 585 transitions. [2022-11-02 20:13:09,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-11-02 20:13:09,238 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:09,238 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:09,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:09,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:09,455 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:09,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:09,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2070873983, now seen corresponding path program 1 times [2022-11-02 20:13:09,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:09,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885761099] [2022-11-02 20:13:09,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:09,459 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:09,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:09,460 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:09,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 20:13:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:11,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 2285 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:13:11,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:12,049 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 258 proven. 1 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2022-11-02 20:13:12,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:13:12,761 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2022-11-02 20:13:12,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:12,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885761099] [2022-11-02 20:13:12,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885761099] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:13:12,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:13:12,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-02 20:13:12,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783877608] [2022-11-02 20:13:12,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:13:12,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:13:12,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:12,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:13:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:13:12,768 INFO L87 Difference]: Start difference. First operand 420 states and 585 transitions. Second operand has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-02 20:13:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:13,232 INFO L93 Difference]: Finished difference Result 799 states and 1146 transitions. [2022-11-02 20:13:13,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:13:13,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) Word has length 304 [2022-11-02 20:13:13,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:13,237 INFO L225 Difference]: With dead ends: 799 [2022-11-02 20:13:13,237 INFO L226 Difference]: Without dead ends: 435 [2022-11-02 20:13:13,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:13:13,240 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 30 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:13,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1732 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:13:13,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-11-02 20:13:13,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 429. [2022-11-02 20:13:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 281 states have (on average 1.209964412811388) internal successors, (340), 284 states have internal predecessors, (340), 115 states have call successors, (115), 27 states have call predecessors, (115), 32 states have return successors, (142), 117 states have call predecessors, (142), 114 states have call successors, (142) [2022-11-02 20:13:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 597 transitions. [2022-11-02 20:13:13,290 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 597 transitions. Word has length 304 [2022-11-02 20:13:13,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:13,291 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 597 transitions. [2022-11-02 20:13:13,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.75) internal successors, (126), 8 states have internal predecessors, (126), 2 states have call successors, (46), 2 states have call predecessors, (46), 4 states have return successors, (44), 2 states have call predecessors, (44), 2 states have call successors, (44) [2022-11-02 20:13:13,292 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 597 transitions. [2022-11-02 20:13:13,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-02 20:13:13,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:13,294 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:13,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:13,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:13,517 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:13,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:13,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2014722693, now seen corresponding path program 1 times [2022-11-02 20:13:13,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:13,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938095461] [2022-11-02 20:13:13,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:13,521 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:13,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:13,522 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:13,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 20:13:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:22,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 2301 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 20:13:22,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:23,316 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:13:23,317 INFO L390 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 [2022-11-02 20:13:23,479 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 261 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-11-02 20:13:23,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:23,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:23,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938095461] [2022-11-02 20:13:23,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938095461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:23,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:23,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:13:23,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879810295] [2022-11-02 20:13:23,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:23,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:13:23,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:23,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:13:23,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:13:23,483 INFO L87 Difference]: Start difference. First operand 429 states and 597 transitions. Second operand has 12 states, 11 states have (on average 10.909090909090908) internal successors, (120), 12 states have internal predecessors, (120), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) [2022-11-02 20:13:30,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:13:33,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:33,651 INFO L93 Difference]: Finished difference Result 834 states and 1191 transitions. [2022-11-02 20:13:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:13:33,654 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.909090909090908) internal successors, (120), 12 states have internal predecessors, (120), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) Word has length 310 [2022-11-02 20:13:33,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:33,659 INFO L225 Difference]: With dead ends: 834 [2022-11-02 20:13:33,659 INFO L226 Difference]: Without dead ends: 453 [2022-11-02 20:13:33,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:13:33,662 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 102 mSDsluCounter, 3278 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 3675 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:33,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 3675 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 794 Invalid, 1 Unknown, 0 Unchecked, 8.8s Time] [2022-11-02 20:13:33,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-11-02 20:13:33,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 439. [2022-11-02 20:13:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 289 states have (on average 1.2041522491349481) internal successors, (348), 292 states have internal predecessors, (348), 115 states have call successors, (115), 27 states have call predecessors, (115), 34 states have return successors, (155), 119 states have call predecessors, (155), 114 states have call successors, (155) [2022-11-02 20:13:33,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 618 transitions. [2022-11-02 20:13:33,700 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 618 transitions. Word has length 310 [2022-11-02 20:13:33,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:33,701 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 618 transitions. [2022-11-02 20:13:33,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.909090909090908) internal successors, (120), 12 states have internal predecessors, (120), 7 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (35), 7 states have call predecessors, (35), 7 states have call successors, (35) [2022-11-02 20:13:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 618 transitions. [2022-11-02 20:13:33,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-11-02 20:13:33,704 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:33,705 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:13:33,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:33,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:33,921 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:33,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:33,922 INFO L85 PathProgramCache]: Analyzing trace with hash 91694395, now seen corresponding path program 1 times [2022-11-02 20:13:33,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:33,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820438019] [2022-11-02 20:13:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:33,924 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:33,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:33,925 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:33,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 20:13:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:36,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 2295 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:13:36,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 241 proven. 0 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-11-02 20:13:36,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:36,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:36,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820438019] [2022-11-02 20:13:36,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820438019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:36,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:36,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:13:36,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377490446] [2022-11-02 20:13:36,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:36,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:13:36,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:13:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:13:36,396 INFO L87 Difference]: Start difference. First operand 439 states and 618 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-02 20:13:36,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:36,540 INFO L93 Difference]: Finished difference Result 830 states and 1211 transitions. [2022-11-02 20:13:36,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:13:36,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 310 [2022-11-02 20:13:36,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:36,548 INFO L225 Difference]: With dead ends: 830 [2022-11-02 20:13:36,549 INFO L226 Difference]: Without dead ends: 439 [2022-11-02 20:13:36,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:13:36,552 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 7 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1303 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 [2022-11-02 20:13:36,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1303 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:13:36,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-02 20:13:36,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2022-11-02 20:13:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 289 states have (on average 1.1972318339100345) internal successors, (346), 292 states have internal predecessors, (346), 115 states have call successors, (115), 27 states have call predecessors, (115), 34 states have return successors, (155), 119 states have call predecessors, (155), 114 states have call successors, (155) [2022-11-02 20:13:36,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 616 transitions. [2022-11-02 20:13:36,594 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 616 transitions. Word has length 310 [2022-11-02 20:13:36,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:36,595 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 616 transitions. [2022-11-02 20:13:36,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (37), 2 states have call predecessors, (37), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2022-11-02 20:13:36,596 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 616 transitions. [2022-11-02 20:13:36,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-02 20:13:36,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:36,612 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-02 20:13:36,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:36,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:36,837 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:36,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:36,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1408820805, now seen corresponding path program 1 times [2022-11-02 20:13:36,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:36,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304502677] [2022-11-02 20:13:36,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:36,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:36,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:36,842 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:36,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 20:13:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:13:44,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 2309 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-02 20:13:44,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:13:45,399 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 229 proven. 0 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2022-11-02 20:13:45,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:13:45,399 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 20:13:45,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304502677] [2022-11-02 20:13:45,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304502677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:13:45,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:13:45,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:13:45,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136393866] [2022-11-02 20:13:45,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:13:45,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:13:45,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 20:13:45,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:13:45,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:13:45,403 INFO L87 Difference]: Start difference. First operand 439 states and 616 transitions. Second operand has 13 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-02 20:13:49,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:13:49,797 INFO L93 Difference]: Finished difference Result 773 states and 1096 transitions. [2022-11-02 20:13:49,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:13:49,801 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) Word has length 314 [2022-11-02 20:13:49,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:13:49,809 INFO L225 Difference]: With dead ends: 773 [2022-11-02 20:13:49,809 INFO L226 Difference]: Without dead ends: 439 [2022-11-02 20:13:49,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:13:49,813 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 97 mSDsluCounter, 3113 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 3497 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:13:49,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 3497 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 20:13:49,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2022-11-02 20:13:49,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2022-11-02 20:13:49,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 289 states have (on average 1.193771626297578) internal successors, (345), 292 states have internal predecessors, (345), 115 states have call successors, (115), 27 states have call predecessors, (115), 34 states have return successors, (155), 119 states have call predecessors, (155), 114 states have call successors, (155) [2022-11-02 20:13:49,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 615 transitions. [2022-11-02 20:13:49,862 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 615 transitions. Word has length 314 [2022-11-02 20:13:49,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:13:49,863 INFO L495 AbstractCegarLoop]: Abstraction has 439 states and 615 transitions. [2022-11-02 20:13:49,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.181818181818182) internal successors, (112), 11 states have internal predecessors, (112), 8 states have call successors, (36), 4 states have call predecessors, (36), 3 states have return successors, (33), 6 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-02 20:13:49,864 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 615 transitions. [2022-11-02 20:13:49,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-11-02 20:13:49,867 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:13:49,867 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2022-11-02 20:13:49,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:13:50,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 20:13:50,084 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:13:50,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:13:50,085 INFO L85 PathProgramCache]: Analyzing trace with hash -147903555, now seen corresponding path program 1 times [2022-11-02 20:13:50,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 20:13:50,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [400347539] [2022-11-02 20:13:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:13:50,088 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 20:13:50,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 20:13:50,089 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 20:13:50,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d959e6-5087-4a76-90d3-528cf7032c4a/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process