./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a --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 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab --- 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-b5237d8 [2022-11-21 14:03:16,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 14:03:16,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 14:03:16,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 14:03:16,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 14:03:16,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 14:03:16,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 14:03:16,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 14:03:16,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 14:03:16,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 14:03:16,546 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 14:03:16,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 14:03:16,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 14:03:16,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 14:03:16,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 14:03:16,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 14:03:16,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 14:03:16,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 14:03:16,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 14:03:16,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 14:03:16,559 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 14:03:16,560 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 14:03:16,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 14:03:16,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 14:03:16,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 14:03:16,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 14:03:16,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 14:03:16,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 14:03:16,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 14:03:16,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 14:03:16,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 14:03:16,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 14:03:16,572 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 14:03:16,573 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 14:03:16,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 14:03:16,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 14:03:16,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 14:03:16,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 14:03:16,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 14:03:16,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 14:03:16,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 14:03:16,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-21 14:03:16,619 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 14:03:16,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 14:03:16,620 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 14:03:16,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 14:03:16,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 14:03:16,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 14:03:16,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 14:03:16,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 14:03:16,622 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 14:03:16,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 14:03:16,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 14:03:16,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 14:03:16,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 14:03:16,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 14:03:16,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 14:03:16,623 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 14:03:16,623 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 14:03:16,623 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 14:03:16,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 14:03:16,624 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 14:03:16,624 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 14:03:16,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:03:16,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 14:03:16,624 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 14:03:16,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 14:03:16,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 14:03:16,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 14:03:16,625 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 14:03:16,625 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 14:03:16,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 14:03:16,626 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_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ec24500153ff48401c44b6cbf6e64bbffda498093f21927cfcfb52ad2376ab [2022-11-21 14:03:16,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 14:03:16,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 14:03:16,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 14:03:16,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 14:03:16,968 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 14:03:16,969 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2022-11-21 14:03:20,038 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 14:03:20,633 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 14:03:20,634 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i [2022-11-21 14:03:20,677 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/data/4a5208eae/1a0f6d51ff4a4f2a813b88f0b6475270/FLAG15c1f5654 [2022-11-21 14:03:20,696 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/data/4a5208eae/1a0f6d51ff4a4f2a813b88f0b6475270 [2022-11-21 14:03:20,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 14:03:20,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 14:03:20,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 14:03:20,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 14:03:20,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 14:03:20,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:03:20" (1/1) ... [2022-11-21 14:03:20,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301c6443 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:20, skipping insertion in model container [2022-11-21 14:03:20,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:03:20" (1/1) ... [2022-11-21 14:03:20,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 14:03:20,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 14:03:21,116 WARN L237 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_e99561c6-65a6-42fe-b542-fe29590bf00b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2022-11-21 14:03:21,127 WARN L237 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_e99561c6-65a6-42fe-b542-fe29590bf00b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2022-11-21 14:03:21,968 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:21,969 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:21,973 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:21,974 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:21,976 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:22,003 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:22,005 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:22,007 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:22,011 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:22,432 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 14:03:22,433 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 14:03:22,434 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 14:03:22,435 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 14:03:22,436 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 14:03:22,437 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 14:03:22,438 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 14:03:22,438 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 14:03:22,439 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 14:03:22,439 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 14:03:22,652 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 14:03:22,816 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:22,817 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:22,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:03:22,956 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 14:03:22,986 WARN L237 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_e99561c6-65a6-42fe-b542-fe29590bf00b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4498,4511] [2022-11-21 14:03:22,987 WARN L237 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_e99561c6-65a6-42fe-b542-fe29590bf00b/sv-benchmarks/c/aws-c-common/aws_byte_cursor_from_buf_harness.i[4558,4571] [2022-11-21 14:03:23,025 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:23,025 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:23,026 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:23,026 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:23,027 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:23,033 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:23,034 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:23,035 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:23,036 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:23,079 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-21 14:03:23,080 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-21 14:03:23,082 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-21 14:03:23,083 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-21 14:03:23,084 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-21 14:03:23,084 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-21 14:03:23,085 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-21 14:03:23,088 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-21 14:03:23,089 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-21 14:03:23,090 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-21 14:03:23,125 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-21 14:03:23,245 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:23,248 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-21 14:03:23,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:03:23,591 INFO L208 MainTranslator]: Completed translation [2022-11-21 14:03:23,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23 WrapperNode [2022-11-21 14:03:23,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 14:03:23,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 14:03:23,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 14:03:23,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 14:03:23,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23" (1/1) ... [2022-11-21 14:03:23,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23" (1/1) ... [2022-11-21 14:03:23,818 INFO L138 Inliner]: procedures = 690, calls = 2638, calls flagged for inlining = 61, calls inlined = 9, statements flattened = 867 [2022-11-21 14:03:23,832 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 14:03:23,833 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 14:03:23,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 14:03:23,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 14:03:23,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23" (1/1) ... [2022-11-21 14:03:23,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23" (1/1) ... [2022-11-21 14:03:23,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23" (1/1) ... [2022-11-21 14:03:23,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23" (1/1) ... [2022-11-21 14:03:23,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23" (1/1) ... [2022-11-21 14:03:23,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23" (1/1) ... [2022-11-21 14:03:23,922 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23" (1/1) ... [2022-11-21 14:03:23,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23" (1/1) ... [2022-11-21 14:03:23,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 14:03:23,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 14:03:23,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 14:03:23,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 14:03:23,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23" (1/1) ... [2022-11-21 14:03:23,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:03:23,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:23,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 14:03:23,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 14:03:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-11-21 14:03:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-11-21 14:03:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-11-21 14:03:24,017 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-11-21 14:03:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 14:03:24,017 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-21 14:03:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-21 14:03:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 14:03:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-21 14:03:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-21 14:03:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_from_buf [2022-11-21 14:03:24,018 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_from_buf [2022-11-21 14:03:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 14:03:24,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 14:03:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-21 14:03:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 14:03:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 14:03:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-21 14:03:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-21 14:03:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-11-21 14:03:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-11-21 14:03:24,019 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-21 14:03:24,019 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-21 14:03:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 14:03:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-21 14:03:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-21 14:03:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-21 14:03:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-21 14:03:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-21 14:03:24,020 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-21 14:03:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 14:03:24,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 14:03:24,407 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 14:03:24,409 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 14:03:25,721 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 14:03:25,734 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 14:03:25,734 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 14:03:25,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:03:25 BoogieIcfgContainer [2022-11-21 14:03:25,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 14:03:25,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 14:03:25,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 14:03:25,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 14:03:25,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:03:20" (1/3) ... [2022-11-21 14:03:25,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132ff4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:03:25, skipping insertion in model container [2022-11-21 14:03:25,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:03:23" (2/3) ... [2022-11-21 14:03:25,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@132ff4dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:03:25, skipping insertion in model container [2022-11-21 14:03:25,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:03:25" (3/3) ... [2022-11-21 14:03:25,750 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_from_buf_harness.i [2022-11-21 14:03:25,773 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 14:03:25,773 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 14:03:25,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 14:03:25,863 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;@61f52e06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 14:03:25,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 14:03:25,867 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 88 states have (on average 1.25) internal successors, (110), 89 states have internal predecessors, (110), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-11-21 14:03:25,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 14:03:25,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:25,881 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-21 14:03:25,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:25,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash -963084782, now seen corresponding path program 1 times [2022-11-21 14:03:25,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:25,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104219491] [2022-11-21 14:03:25,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:25,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:26,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:26,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:03:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:26,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:03:26,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:26,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:03:26,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:26,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 14:03:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:26,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 14:03:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:03:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:26,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 14:03:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-21 14:03:26,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:26,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104219491] [2022-11-21 14:03:26,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104219491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:26,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:26,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 14:03:26,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767450798] [2022-11-21 14:03:26,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:26,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 14:03:26,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:26,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 14:03:26,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:03:26,923 INFO L87 Difference]: Start difference. First operand has 128 states, 88 states have (on average 1.25) internal successors, (110), 89 states have internal predecessors, (110), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-21 14:03:27,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:27,384 INFO L93 Difference]: Finished difference Result 252 states and 347 transitions. [2022-11-21 14:03:27,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 14:03:27,387 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2022-11-21 14:03:27,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:27,398 INFO L225 Difference]: With dead ends: 252 [2022-11-21 14:03:27,398 INFO L226 Difference]: Without dead ends: 121 [2022-11-21 14:03:27,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 14:03:27,417 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 62 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:27,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 139 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 14:03:27,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-21 14:03:27,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-11-21 14:03:27,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 82 states have (on average 1.2195121951219512) internal successors, (100), 83 states have internal predecessors, (100), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-21 14:03:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 155 transitions. [2022-11-21 14:03:27,499 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 155 transitions. Word has length 65 [2022-11-21 14:03:27,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:27,500 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 155 transitions. [2022-11-21 14:03:27,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-21 14:03:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 155 transitions. [2022-11-21 14:03:27,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 14:03:27,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:27,507 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-21 14:03:27,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 14:03:27,507 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:27,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:27,508 INFO L85 PathProgramCache]: Analyzing trace with hash 178526858, now seen corresponding path program 1 times [2022-11-21 14:03:27,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:27,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976816022] [2022-11-21 14:03:27,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:27,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:28,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:28,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:28,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:28,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:28,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:03:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:28,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:03:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:28,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:03:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:28,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 14:03:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:28,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 14:03:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:28,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:03:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 14:03:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-21 14:03:28,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:28,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976816022] [2022-11-21 14:03:28,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976816022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:03:28,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724177549] [2022-11-21 14:03:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:28,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:28,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:28,547 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:03:28,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 14:03:29,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:29,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 2567 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 14:03:29,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 14:03:29,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:29,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724177549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:29,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:03:29,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-11-21 14:03:29,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182859937] [2022-11-21 14:03:29,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:29,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:03:29,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:29,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:03:29,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:03:29,392 INFO L87 Difference]: Start difference. First operand 121 states and 155 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-21 14:03:29,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:29,590 INFO L93 Difference]: Finished difference Result 220 states and 286 transitions. [2022-11-21 14:03:29,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:03:29,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65 [2022-11-21 14:03:29,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:29,594 INFO L225 Difference]: With dead ends: 220 [2022-11-21 14:03:29,594 INFO L226 Difference]: Without dead ends: 124 [2022-11-21 14:03:29,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:03:29,596 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 181 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:29,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 330 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:03:29,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-21 14:03:29,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-11-21 14:03:29,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.2142857142857142) internal successors, (102), 86 states have internal predecessors, (102), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-11-21 14:03:29,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 158 transitions. [2022-11-21 14:03:29,627 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 158 transitions. Word has length 65 [2022-11-21 14:03:29,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:29,628 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 158 transitions. [2022-11-21 14:03:29,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-21 14:03:29,628 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 158 transitions. [2022-11-21 14:03:29,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-21 14:03:29,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:29,636 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-21 14:03:29,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 14:03:29,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:29,848 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:29,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:29,848 INFO L85 PathProgramCache]: Analyzing trace with hash 253294421, now seen corresponding path program 1 times [2022-11-21 14:03:29,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:29,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261359954] [2022-11-21 14:03:29,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:29,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:30,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:30,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:30,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:03:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:30,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:03:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:30,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:03:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:31,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:03:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:31,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:03:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 14:03:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 14:03:31,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-21 14:03:31,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:31,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261359954] [2022-11-21 14:03:31,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261359954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:03:31,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118463541] [2022-11-21 14:03:31,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:31,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:31,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:31,313 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:03:31,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 14:03:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:31,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 2584 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 14:03:31,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-21 14:03:32,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:32,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118463541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:32,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:03:32,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-11-21 14:03:32,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015816944] [2022-11-21 14:03:32,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:32,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 14:03:32,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:32,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 14:03:32,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-21 14:03:32,113 INFO L87 Difference]: Start difference. First operand 124 states and 158 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-21 14:03:32,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:32,477 INFO L93 Difference]: Finished difference Result 213 states and 272 transitions. [2022-11-21 14:03:32,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 14:03:32,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 71 [2022-11-21 14:03:32,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:32,479 INFO L225 Difference]: With dead ends: 213 [2022-11-21 14:03:32,480 INFO L226 Difference]: Without dead ends: 121 [2022-11-21 14:03:32,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2022-11-21 14:03:32,481 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 180 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:32,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 637 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 14:03:32,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-21 14:03:32,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-11-21 14:03:32,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 83 states have internal predecessors, (99), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-11-21 14:03:32,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 154 transitions. [2022-11-21 14:03:32,520 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 154 transitions. Word has length 71 [2022-11-21 14:03:32,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:32,521 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 154 transitions. [2022-11-21 14:03:32,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-21 14:03:32,521 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 154 transitions. [2022-11-21 14:03:32,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-21 14:03:32,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:32,522 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-21 14:03:32,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 14:03:32,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-21 14:03:32,723 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:32,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:32,724 INFO L85 PathProgramCache]: Analyzing trace with hash -241480736, now seen corresponding path program 1 times [2022-11-21 14:03:32,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:32,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680417921] [2022-11-21 14:03:32,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:32,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:33,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:33,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:33,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:03:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:33,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:03:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:33,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:03:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:33,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:03:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:33,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:03:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:33,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 14:03:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:33,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 14:03:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:33,429 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 14:03:33,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:33,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680417921] [2022-11-21 14:03:33,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680417921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:33,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:33,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:03:33,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420724959] [2022-11-21 14:03:33,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:33,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:03:33,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:33,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:03:33,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:03:33,434 INFO L87 Difference]: Start difference. First operand 121 states and 154 transitions. Second operand has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-21 14:03:33,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:33,846 INFO L93 Difference]: Finished difference Result 207 states and 264 transitions. [2022-11-21 14:03:33,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:03:33,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 77 [2022-11-21 14:03:33,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:33,848 INFO L225 Difference]: With dead ends: 207 [2022-11-21 14:03:33,848 INFO L226 Difference]: Without dead ends: 124 [2022-11-21 14:03:33,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:03:33,850 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 78 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:33,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 252 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 14:03:33,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-21 14:03:33,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-11-21 14:03:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 86 states have internal predecessors, (101), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-11-21 14:03:33,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 157 transitions. [2022-11-21 14:03:33,862 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 157 transitions. Word has length 77 [2022-11-21 14:03:33,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:33,862 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 157 transitions. [2022-11-21 14:03:33,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-21 14:03:33,863 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 157 transitions. [2022-11-21 14:03:33,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-21 14:03:33,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:33,864 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-21 14:03:33,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 14:03:33,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:33,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:33,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1300692571, now seen corresponding path program 1 times [2022-11-21 14:03:33,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:33,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659860116] [2022-11-21 14:03:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:33,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:34,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:34,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:34,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:34,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:03:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:34,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:03:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:34,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:03:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:03:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:03:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:34,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 14:03:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:34,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 14:03:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:34,978 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 14:03:34,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:34,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659860116] [2022-11-21 14:03:34,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659860116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:34,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:34,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 14:03:34,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765019527] [2022-11-21 14:03:34,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:34,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:03:34,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:34,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:03:34,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:03:34,986 INFO L87 Difference]: Start difference. First operand 124 states and 157 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-21 14:03:35,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:35,667 INFO L93 Difference]: Finished difference Result 136 states and 170 transitions. [2022-11-21 14:03:35,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:03:35,667 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 79 [2022-11-21 14:03:35,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:35,669 INFO L225 Difference]: With dead ends: 136 [2022-11-21 14:03:35,669 INFO L226 Difference]: Without dead ends: 134 [2022-11-21 14:03:35,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:03:35,671 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 82 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:35,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 516 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 14:03:35,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-11-21 14:03:35,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 133. [2022-11-21 14:03:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 93 states have internal predecessors, (107), 29 states have call successors, (29), 11 states have call predecessors, (29), 13 states have return successors, (31), 28 states have call predecessors, (31), 28 states have call successors, (31) [2022-11-21 14:03:35,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 167 transitions. [2022-11-21 14:03:35,683 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 167 transitions. Word has length 79 [2022-11-21 14:03:35,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:35,684 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 167 transitions. [2022-11-21 14:03:35,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-21 14:03:35,684 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 167 transitions. [2022-11-21 14:03:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-21 14:03:35,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:35,685 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2022-11-21 14:03:35,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 14:03:35,686 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:35,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1177544493, now seen corresponding path program 1 times [2022-11-21 14:03:35,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:35,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215472348] [2022-11-21 14:03:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:35,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:39,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:40,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:40,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:03:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:40,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:03:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:40,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:03:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:40,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:03:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:40,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 14:03:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:40,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 14:03:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:40,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 14:03:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 14:03:40,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:40,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215472348] [2022-11-21 14:03:40,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215472348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:40,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:40,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 14:03:40,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360516042] [2022-11-21 14:03:40,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:40,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 14:03:40,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 14:03:40,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-21 14:03:40,462 INFO L87 Difference]: Start difference. First operand 133 states and 167 transitions. Second operand has 18 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-21 14:03:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:42,534 INFO L93 Difference]: Finished difference Result 264 states and 343 transitions. [2022-11-21 14:03:42,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 14:03:42,535 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 83 [2022-11-21 14:03:42,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:42,540 INFO L225 Difference]: With dead ends: 264 [2022-11-21 14:03:42,540 INFO L226 Difference]: Without dead ends: 174 [2022-11-21 14:03:42,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2022-11-21 14:03:42,542 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 163 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 1710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:42,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 473 Invalid, 1710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 14:03:42,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-21 14:03:42,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 144. [2022-11-21 14:03:42,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 95 states have (on average 1.1789473684210525) internal successors, (112), 99 states have internal predecessors, (112), 34 states have call successors, (34), 12 states have call predecessors, (34), 14 states have return successors, (36), 32 states have call predecessors, (36), 33 states have call successors, (36) [2022-11-21 14:03:42,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 182 transitions. [2022-11-21 14:03:42,566 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 182 transitions. Word has length 83 [2022-11-21 14:03:42,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:42,566 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 182 transitions. [2022-11-21 14:03:42,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-21 14:03:42,567 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 182 transitions. [2022-11-21 14:03:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-21 14:03:42,568 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:42,568 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:03:42,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 14:03:42,569 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:42,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:42,570 INFO L85 PathProgramCache]: Analyzing trace with hash 340573773, now seen corresponding path program 1 times [2022-11-21 14:03:42,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:42,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759639323] [2022-11-21 14:03:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:42,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:44,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:44,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:44,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:44,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:44,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:03:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:44,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:03:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:44,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:03:44,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:44,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:03:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:44,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:03:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:44,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:03:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:45,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 14:03:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:45,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 14:03:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-21 14:03:45,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:45,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759639323] [2022-11-21 14:03:45,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759639323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:45,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:45,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 14:03:45,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634313499] [2022-11-21 14:03:45,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:45,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 14:03:45,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:45,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 14:03:45,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:03:45,429 INFO L87 Difference]: Start difference. First operand 144 states and 182 transitions. Second operand has 16 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-21 14:03:46,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:46,981 INFO L93 Difference]: Finished difference Result 260 states and 335 transitions. [2022-11-21 14:03:46,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 14:03:46,982 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) Word has length 90 [2022-11-21 14:03:46,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:46,983 INFO L225 Difference]: With dead ends: 260 [2022-11-21 14:03:46,983 INFO L226 Difference]: Without dead ends: 170 [2022-11-21 14:03:46,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=121, Invalid=691, Unknown=0, NotChecked=0, Total=812 [2022-11-21 14:03:46,985 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 250 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:46,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 576 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-21 14:03:46,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-21 14:03:47,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 159. [2022-11-21 14:03:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 112 states have internal predecessors, (128), 36 states have call successors, (36), 12 states have call predecessors, (36), 15 states have return successors, (42), 34 states have call predecessors, (42), 35 states have call successors, (42) [2022-11-21 14:03:47,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 206 transitions. [2022-11-21 14:03:47,010 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 206 transitions. Word has length 90 [2022-11-21 14:03:47,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:47,012 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 206 transitions. [2022-11-21 14:03:47,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.0) internal successors, (56), 13 states have internal predecessors, (56), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-21 14:03:47,013 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 206 transitions. [2022-11-21 14:03:47,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-21 14:03:47,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:47,015 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:03:47,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 14:03:47,015 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:47,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:47,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1726777167, now seen corresponding path program 1 times [2022-11-21 14:03:47,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:47,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936483503] [2022-11-21 14:03:47,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:47,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:47,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:03:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:47,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:03:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:47,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:03:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:03:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:47,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:03:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:03:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 14:03:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 14:03:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:47,480 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-21 14:03:47,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:47,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936483503] [2022-11-21 14:03:47,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936483503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:47,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:47,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:03:47,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558458829] [2022-11-21 14:03:47,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:47,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 14:03:47,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:47,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 14:03:47,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:03:47,484 INFO L87 Difference]: Start difference. First operand 159 states and 206 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 14:03:47,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:47,856 INFO L93 Difference]: Finished difference Result 293 states and 388 transitions. [2022-11-21 14:03:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:03:47,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 90 [2022-11-21 14:03:47,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:47,858 INFO L225 Difference]: With dead ends: 293 [2022-11-21 14:03:47,858 INFO L226 Difference]: Without dead ends: 159 [2022-11-21 14:03:47,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:03:47,859 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 81 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:47,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 259 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 14:03:47,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-11-21 14:03:47,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2022-11-21 14:03:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 112 states have internal predecessors, (127), 36 states have call successors, (36), 12 states have call predecessors, (36), 15 states have return successors, (42), 34 states have call predecessors, (42), 35 states have call successors, (42) [2022-11-21 14:03:47,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 205 transitions. [2022-11-21 14:03:47,881 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 205 transitions. Word has length 90 [2022-11-21 14:03:47,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:47,881 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 205 transitions. [2022-11-21 14:03:47,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 14:03:47,881 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 205 transitions. [2022-11-21 14:03:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-21 14:03:47,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:47,884 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:03:47,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 14:03:47,885 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:47,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:47,885 INFO L85 PathProgramCache]: Analyzing trace with hash 383299479, now seen corresponding path program 1 times [2022-11-21 14:03:47,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:47,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115766091] [2022-11-21 14:03:47,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:47,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:49,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:49,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:49,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:03:49,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:49,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:03:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:49,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:03:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:49,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:03:49,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:03:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:03:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:49,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 14:03:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:49,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 14:03:49,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-21 14:03:49,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:49,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115766091] [2022-11-21 14:03:49,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115766091] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:03:49,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078101270] [2022-11-21 14:03:49,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:49,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:49,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:49,734 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:03:49,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 14:03:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:50,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 14:03:50,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:50,453 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 14:03:50,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:50,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078101270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:50,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:03:50,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-11-21 14:03:50,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919196589] [2022-11-21 14:03:50,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:50,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:03:50,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:50,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:03:50,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:03:50,455 INFO L87 Difference]: Start difference. First operand 159 states and 205 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 14:03:50,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:50,638 INFO L93 Difference]: Finished difference Result 289 states and 375 transitions. [2022-11-21 14:03:50,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:03:50,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2022-11-21 14:03:50,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:50,641 INFO L225 Difference]: With dead ends: 289 [2022-11-21 14:03:50,641 INFO L226 Difference]: Without dead ends: 169 [2022-11-21 14:03:50,642 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-21 14:03:50,642 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 13 mSDsluCounter, 1004 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:50,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1155 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:03:50,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-21 14:03:50,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2022-11-21 14:03:50,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 117 states have internal predecessors, (131), 36 states have call successors, (36), 12 states have call predecessors, (36), 16 states have return successors, (44), 34 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-21 14:03:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2022-11-21 14:03:50,674 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 94 [2022-11-21 14:03:50,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:50,674 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2022-11-21 14:03:50,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 14:03:50,675 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2022-11-21 14:03:50,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-21 14:03:50,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:50,679 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:03:50,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 14:03:50,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:50,889 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:50,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:50,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1721484580, now seen corresponding path program 1 times [2022-11-21 14:03:50,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:50,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237690711] [2022-11-21 14:03:50,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:50,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:54,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:54,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:03:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:55,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:03:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:55,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:03:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:03:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:55,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:03:55,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:55,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:03:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:55,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 14:03:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:55,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:03:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-21 14:03:55,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:55,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237690711] [2022-11-21 14:03:55,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237690711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:03:55,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474421527] [2022-11-21 14:03:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:55,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:55,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:55,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:03:55,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 14:03:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:56,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 2675 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-21 14:03:56,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:56,714 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-21 14:03:56,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:56,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474421527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:56,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:03:56,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [25] total 29 [2022-11-21 14:03:56,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262209817] [2022-11-21 14:03:56,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:56,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:03:56,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:56,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:03:56,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=743, Unknown=0, NotChecked=0, Total=812 [2022-11-21 14:03:56,717 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 14:03:57,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:57,387 INFO L93 Difference]: Finished difference Result 335 states and 441 transitions. [2022-11-21 14:03:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:03:57,388 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-11-21 14:03:57,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:57,389 INFO L225 Difference]: With dead ends: 335 [2022-11-21 14:03:57,389 INFO L226 Difference]: Without dead ends: 196 [2022-11-21 14:03:57,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=905, Unknown=0, NotChecked=0, Total=992 [2022-11-21 14:03:57,391 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 37 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:57,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 658 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 14:03:57,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-21 14:03:57,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 172. [2022-11-21 14:03:57,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 119 states have (on average 1.1932773109243697) internal successors, (142), 125 states have internal predecessors, (142), 36 states have call successors, (36), 12 states have call predecessors, (36), 16 states have return successors, (44), 34 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-21 14:03:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 222 transitions. [2022-11-21 14:03:57,421 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 222 transitions. Word has length 96 [2022-11-21 14:03:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:57,422 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 222 transitions. [2022-11-21 14:03:57,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 14:03:57,422 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 222 transitions. [2022-11-21 14:03:57,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-21 14:03:57,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:57,424 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:03:57,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 14:03:57,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 14:03:57,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:57,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:57,635 INFO L85 PathProgramCache]: Analyzing trace with hash -335281186, now seen corresponding path program 1 times [2022-11-21 14:03:57,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:57,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061095786] [2022-11-21 14:03:57,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:57,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:57,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:58,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:03:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:58,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:03:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:58,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:03:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:58,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:03:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:58,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:03:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:03:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:03:58,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:03:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:58,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 14:03:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:58,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:03:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-21 14:03:58,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:58,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061095786] [2022-11-21 14:03:58,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061095786] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:03:58,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898840079] [2022-11-21 14:03:58,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:58,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:03:58,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:03:58,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:03:58,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 14:03:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:59,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 14:03:59,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:03:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-21 14:03:59,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:03:59,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898840079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:59,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:03:59,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-21 14:03:59,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727261443] [2022-11-21 14:03:59,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:59,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 14:03:59,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:59,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 14:03:59,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:03:59,574 INFO L87 Difference]: Start difference. First operand 172 states and 222 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 14:04:00,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:00,074 INFO L93 Difference]: Finished difference Result 344 states and 461 transitions. [2022-11-21 14:04:00,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 14:04:00,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-11-21 14:04:00,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:00,076 INFO L225 Difference]: With dead ends: 344 [2022-11-21 14:04:00,076 INFO L226 Difference]: Without dead ends: 197 [2022-11-21 14:04:00,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:04:00,078 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 40 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:00,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 522 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 14:04:00,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-21 14:04:00,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 175. [2022-11-21 14:04:00,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 122 states have (on average 1.1885245901639345) internal successors, (145), 128 states have internal predecessors, (145), 36 states have call successors, (36), 12 states have call predecessors, (36), 16 states have return successors, (44), 34 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-21 14:04:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 225 transitions. [2022-11-21 14:04:00,096 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 225 transitions. Word has length 96 [2022-11-21 14:04:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:00,096 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 225 transitions. [2022-11-21 14:04:00,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 14:04:00,097 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 225 transitions. [2022-11-21 14:04:00,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-21 14:04:00,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:00,099 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:04:00,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:00,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 14:04:00,316 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:00,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:00,316 INFO L85 PathProgramCache]: Analyzing trace with hash -60521572, now seen corresponding path program 1 times [2022-11-21 14:04:00,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:00,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748981108] [2022-11-21 14:04:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:00,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:04:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:04:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:00,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:04:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:00,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:04:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:00,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:00,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:04:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:00,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:04:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:00,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:04:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:00,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 14:04:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:00,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:04:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:00,678 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-21 14:04:00,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:00,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748981108] [2022-11-21 14:04:00,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748981108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:00,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:00,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:04:00,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886091636] [2022-11-21 14:04:00,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:00,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 14:04:00,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:00,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 14:04:00,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:04:00,681 INFO L87 Difference]: Start difference. First operand 175 states and 225 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 14:04:01,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:01,062 INFO L93 Difference]: Finished difference Result 331 states and 437 transitions. [2022-11-21 14:04:01,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:04:01,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-11-21 14:04:01,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:01,064 INFO L225 Difference]: With dead ends: 331 [2022-11-21 14:04:01,064 INFO L226 Difference]: Without dead ends: 181 [2022-11-21 14:04:01,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:04:01,065 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 74 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:01,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 259 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-21 14:04:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-21 14:04:01,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 173. [2022-11-21 14:04:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 120 states have (on average 1.1833333333333333) internal successors, (142), 126 states have internal predecessors, (142), 36 states have call successors, (36), 12 states have call predecessors, (36), 16 states have return successors, (44), 34 states have call predecessors, (44), 35 states have call successors, (44) [2022-11-21 14:04:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 222 transitions. [2022-11-21 14:04:01,090 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 222 transitions. Word has length 96 [2022-11-21 14:04:01,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:01,090 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 222 transitions. [2022-11-21 14:04:01,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 14:04:01,091 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 222 transitions. [2022-11-21 14:04:01,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-21 14:04:01,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:01,093 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:04:01,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 14:04:01,094 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:01,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:01,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1061953058, now seen corresponding path program 1 times [2022-11-21 14:04:01,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:01,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418728005] [2022-11-21 14:04:01,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:01,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:04:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:04:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:04:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:04:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:04:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:04:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:04:02,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 14:04:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:04:02,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-21 14:04:02,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:02,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418728005] [2022-11-21 14:04:02,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418728005] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:02,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398351262] [2022-11-21 14:04:02,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:02,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:02,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:02,427 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:02,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 14:04:03,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:03,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 2672 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-21 14:04:03,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:03,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:04:03,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-21 14:04:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 14:04:03,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:04:03,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398351262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:03,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:04:03,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 15 [2022-11-21 14:04:03,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852056713] [2022-11-21 14:04:03,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:03,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 14:04:03,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:03,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 14:04:03,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-21 14:04:03,569 INFO L87 Difference]: Start difference. First operand 173 states and 222 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-21 14:04:05,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:05,469 INFO L93 Difference]: Finished difference Result 518 states and 673 transitions. [2022-11-21 14:04:05,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 14:04:05,470 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 96 [2022-11-21 14:04:05,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:05,472 INFO L225 Difference]: With dead ends: 518 [2022-11-21 14:04:05,473 INFO L226 Difference]: Without dead ends: 361 [2022-11-21 14:04:05,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 106 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2022-11-21 14:04:05,474 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 430 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:05,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1150 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 14:04:05,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-11-21 14:04:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 274. [2022-11-21 14:04:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 195 states have (on average 1.1794871794871795) internal successors, (230), 203 states have internal predecessors, (230), 54 states have call successors, (54), 19 states have call predecessors, (54), 24 states have return successors, (67), 51 states have call predecessors, (67), 52 states have call successors, (67) [2022-11-21 14:04:05,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 351 transitions. [2022-11-21 14:04:05,513 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 351 transitions. Word has length 96 [2022-11-21 14:04:05,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:05,514 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 351 transitions. [2022-11-21 14:04:05,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-21 14:04:05,514 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 351 transitions. [2022-11-21 14:04:05,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-21 14:04:05,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:05,516 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:04:05,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:05,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 14:04:05,728 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:05,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:05,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1793920484, now seen corresponding path program 1 times [2022-11-21 14:04:05,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:05,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170708202] [2022-11-21 14:04:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:05,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:05,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:04:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:06,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:04:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:06,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:04:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:06,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:04:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:06,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:06,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:04:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:04:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:06,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 14:04:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:06,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 14:04:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:06,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:04:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:06,106 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 14:04:06,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:06,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170708202] [2022-11-21 14:04:06,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170708202] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:06,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684869969] [2022-11-21 14:04:06,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:06,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:06,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:06,108 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:06,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 14:04:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:06,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 2669 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 14:04:06,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:06,713 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-21 14:04:06,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:04:06,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684869969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:06,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:04:06,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-21 14:04:06,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045528443] [2022-11-21 14:04:06,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:06,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 14:04:06,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:06,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 14:04:06,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:04:06,720 INFO L87 Difference]: Start difference. First operand 274 states and 351 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 14:04:06,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:06,788 INFO L93 Difference]: Finished difference Result 498 states and 641 transitions. [2022-11-21 14:04:06,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 14:04:06,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 96 [2022-11-21 14:04:06,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:06,792 INFO L225 Difference]: With dead ends: 498 [2022-11-21 14:04:06,792 INFO L226 Difference]: Without dead ends: 267 [2022-11-21 14:04:06,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:04:06,794 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 26 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:06,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 462 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 14:04:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-21 14:04:06,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 260. [2022-11-21 14:04:06,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 182 states have (on average 1.1538461538461537) internal successors, (210), 189 states have internal predecessors, (210), 54 states have call successors, (54), 19 states have call predecessors, (54), 23 states have return successors, (63), 51 states have call predecessors, (63), 52 states have call successors, (63) [2022-11-21 14:04:06,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 327 transitions. [2022-11-21 14:04:06,834 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 327 transitions. Word has length 96 [2022-11-21 14:04:06,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:06,839 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 327 transitions. [2022-11-21 14:04:06,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 14:04:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 327 transitions. [2022-11-21 14:04:06,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-21 14:04:06,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:06,843 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:04:06,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:07,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 14:04:07,054 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:07,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:07,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1638074292, now seen corresponding path program 1 times [2022-11-21 14:04:07,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:07,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481054355] [2022-11-21 14:04:07,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:07,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:04:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:04:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:04:07,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:04:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:04:07,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:04:07,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:04:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 14:04:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:04:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 14:04:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:07,945 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-21 14:04:07,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:07,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481054355] [2022-11-21 14:04:07,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481054355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:07,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:07,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 14:04:07,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066729020] [2022-11-21 14:04:07,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:07,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:04:07,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:07,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:04:07,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:04:07,948 INFO L87 Difference]: Start difference. First operand 260 states and 327 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-21 14:04:08,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:08,888 INFO L93 Difference]: Finished difference Result 272 states and 339 transitions. [2022-11-21 14:04:08,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:04:08,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100 [2022-11-21 14:04:08,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:08,891 INFO L225 Difference]: With dead ends: 272 [2022-11-21 14:04:08,891 INFO L226 Difference]: Without dead ends: 270 [2022-11-21 14:04:08,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-21 14:04:08,892 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 87 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:08,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 519 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 687 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 14:04:08,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-21 14:04:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 265. [2022-11-21 14:04:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 185 states have (on average 1.1513513513513514) internal successors, (213), 192 states have internal predecessors, (213), 55 states have call successors, (55), 20 states have call predecessors, (55), 24 states have return successors, (64), 52 states have call predecessors, (64), 53 states have call successors, (64) [2022-11-21 14:04:08,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 332 transitions. [2022-11-21 14:04:08,926 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 332 transitions. Word has length 100 [2022-11-21 14:04:08,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:08,926 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 332 transitions. [2022-11-21 14:04:08,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-21 14:04:08,927 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 332 transitions. [2022-11-21 14:04:08,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-21 14:04:08,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:08,929 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:04:08,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 14:04:08,930 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:08,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1497297622, now seen corresponding path program 1 times [2022-11-21 14:04:08,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:08,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367726484] [2022-11-21 14:04:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:08,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:04:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:04:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:09,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:04:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:09,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:04:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:09,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:09,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 14:04:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:09,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 14:04:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:09,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 14:04:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:09,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 14:04:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:09,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 14:04:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:09,910 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-21 14:04:09,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:09,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367726484] [2022-11-21 14:04:09,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367726484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:09,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312889362] [2022-11-21 14:04:09,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:09,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:09,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:09,915 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:09,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 14:04:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:10,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-21 14:04:10,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 14:04:10,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:04:10,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312889362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:10,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:04:10,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-11-21 14:04:10,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919247369] [2022-11-21 14:04:10,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:10,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 14:04:10,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:10,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 14:04:10,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:04:10,675 INFO L87 Difference]: Start difference. First operand 265 states and 332 transitions. Second operand has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 14:04:10,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:10,873 INFO L93 Difference]: Finished difference Result 505 states and 632 transitions. [2022-11-21 14:04:10,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 14:04:10,874 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 100 [2022-11-21 14:04:10,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:10,876 INFO L225 Difference]: With dead ends: 505 [2022-11-21 14:04:10,876 INFO L226 Difference]: Without dead ends: 265 [2022-11-21 14:04:10,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:04:10,878 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 13 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:10,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1147 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 14:04:10,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-21 14:04:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-11-21 14:04:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 185 states have (on average 1.1513513513513514) internal successors, (213), 192 states have internal predecessors, (213), 55 states have call successors, (55), 20 states have call predecessors, (55), 24 states have return successors, (62), 52 states have call predecessors, (62), 53 states have call successors, (62) [2022-11-21 14:04:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 330 transitions. [2022-11-21 14:04:10,914 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 330 transitions. Word has length 100 [2022-11-21 14:04:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:10,914 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 330 transitions. [2022-11-21 14:04:10,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 14:04:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 330 transitions. [2022-11-21 14:04:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-21 14:04:10,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:10,917 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:04:10,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:11,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 14:04:11,128 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:11,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:11,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1094528621, now seen corresponding path program 1 times [2022-11-21 14:04:11,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:11,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279322914] [2022-11-21 14:04:11,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:11,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:04:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:04:13,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:13,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:04:13,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:04:13,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:13,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:13,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:04:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:13,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:04:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:13,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:04:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:13,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:04:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:13,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 14:04:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-21 14:04:13,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:13,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279322914] [2022-11-21 14:04:13,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279322914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:13,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:13,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 14:04:13,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901822112] [2022-11-21 14:04:13,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:13,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 14:04:13,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:13,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 14:04:13,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:04:13,948 INFO L87 Difference]: Start difference. First operand 265 states and 330 transitions. Second operand has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 13 states have internal predecessors, (68), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-21 14:04:15,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:15,657 INFO L93 Difference]: Finished difference Result 464 states and 575 transitions. [2022-11-21 14:04:15,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 14:04:15,658 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 13 states have internal predecessors, (68), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) Word has length 102 [2022-11-21 14:04:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:15,660 INFO L225 Difference]: With dead ends: 464 [2022-11-21 14:04:15,660 INFO L226 Difference]: Without dead ends: 277 [2022-11-21 14:04:15,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2022-11-21 14:04:15,662 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 104 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 1251 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:15,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 507 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1251 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 14:04:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-21 14:04:15,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 271. [2022-11-21 14:04:15,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 190 states have (on average 1.1473684210526316) internal successors, (218), 198 states have internal predecessors, (218), 55 states have call successors, (55), 20 states have call predecessors, (55), 25 states have return successors, (65), 52 states have call predecessors, (65), 53 states have call successors, (65) [2022-11-21 14:04:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 338 transitions. [2022-11-21 14:04:15,699 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 338 transitions. Word has length 102 [2022-11-21 14:04:15,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:15,699 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 338 transitions. [2022-11-21 14:04:15,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 13 states have internal predecessors, (68), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2022-11-21 14:04:15,700 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 338 transitions. [2022-11-21 14:04:15,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-21 14:04:15,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:15,702 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:04:15,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 14:04:15,703 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:15,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:15,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1814235281, now seen corresponding path program 1 times [2022-11-21 14:04:15,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:15,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898835688] [2022-11-21 14:04:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:15,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:16,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:04:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:16,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:04:16,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:16,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:04:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:16,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:04:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:16,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:16,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:04:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:16,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:04:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:16,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:04:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:16,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:04:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 14:04:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:16,889 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-21 14:04:16,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:16,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898835688] [2022-11-21 14:04:16,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898835688] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:16,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723882155] [2022-11-21 14:04:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:16,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:16,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:16,895 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:16,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 14:04:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:17,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-21 14:04:17,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:17,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:04:17,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-11-21 14:04:17,887 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-21 14:04:17,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:04:17,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723882155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:17,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:04:17,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 13 [2022-11-21 14:04:17,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563462332] [2022-11-21 14:04:17,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:17,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 14:04:17,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:17,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 14:04:17,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-21 14:04:17,890 INFO L87 Difference]: Start difference. First operand 271 states and 338 transitions. Second operand has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-21 14:04:19,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:19,709 INFO L93 Difference]: Finished difference Result 696 states and 886 transitions. [2022-11-21 14:04:19,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 14:04:19,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 102 [2022-11-21 14:04:19,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:19,713 INFO L225 Difference]: With dead ends: 696 [2022-11-21 14:04:19,715 INFO L226 Difference]: Without dead ends: 475 [2022-11-21 14:04:19,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 114 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-11-21 14:04:19,718 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 187 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:19,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1632 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 743 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 14:04:19,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-21 14:04:19,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 275. [2022-11-21 14:04:19,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 193 states have (on average 1.145077720207254) internal successors, (221), 201 states have internal predecessors, (221), 55 states have call successors, (55), 21 states have call predecessors, (55), 26 states have return successors, (65), 52 states have call predecessors, (65), 53 states have call successors, (65) [2022-11-21 14:04:19,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 341 transitions. [2022-11-21 14:04:19,776 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 341 transitions. Word has length 102 [2022-11-21 14:04:19,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:19,776 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 341 transitions. [2022-11-21 14:04:19,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.4) internal successors, (74), 9 states have internal predecessors, (74), 5 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-21 14:04:19,777 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 341 transitions. [2022-11-21 14:04:19,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-21 14:04:19,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:19,781 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:04:19,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:19,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 14:04:19,992 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:19,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:19,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1868628179, now seen corresponding path program 1 times [2022-11-21 14:04:19,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:19,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45867248] [2022-11-21 14:04:19,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:19,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:04:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:04:24,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:04:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:24,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:04:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:24,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:04:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:24,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:04:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:04:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:24,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:04:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 14:04:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-21 14:04:24,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:24,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45867248] [2022-11-21 14:04:24,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45867248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:24,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:24,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 14:04:24,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298499545] [2022-11-21 14:04:24,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:24,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 14:04:24,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:24,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 14:04:24,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-21 14:04:24,831 INFO L87 Difference]: Start difference. First operand 275 states and 341 transitions. Second operand has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 15 states have internal predecessors, (52), 9 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-21 14:04:26,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:26,449 INFO L93 Difference]: Finished difference Result 484 states and 595 transitions. [2022-11-21 14:04:26,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 14:04:26,449 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 15 states have internal predecessors, (52), 9 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) Word has length 102 [2022-11-21 14:04:26,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:26,452 INFO L225 Difference]: With dead ends: 484 [2022-11-21 14:04:26,452 INFO L226 Difference]: Without dead ends: 299 [2022-11-21 14:04:26,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2022-11-21 14:04:26,454 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 226 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 1453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:26,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 315 Invalid, 1453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 14:04:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-21 14:04:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 279. [2022-11-21 14:04:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 197 states have (on average 1.1472081218274113) internal successors, (226), 205 states have internal predecessors, (226), 55 states have call successors, (55), 21 states have call predecessors, (55), 26 states have return successors, (65), 52 states have call predecessors, (65), 53 states have call successors, (65) [2022-11-21 14:04:26,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 346 transitions. [2022-11-21 14:04:26,493 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 346 transitions. Word has length 102 [2022-11-21 14:04:26,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:26,493 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 346 transitions. [2022-11-21 14:04:26,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 15 states have internal predecessors, (52), 9 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-21 14:04:26,494 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 346 transitions. [2022-11-21 14:04:26,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-21 14:04:26,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:26,495 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:04:26,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 14:04:26,496 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:26,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:26,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1610462741, now seen corresponding path program 1 times [2022-11-21 14:04:26,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:26,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320366357] [2022-11-21 14:04:26,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:26,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:27,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:04:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:27,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:04:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:27,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:04:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:27,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:04:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:27,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:27,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:04:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:27,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:04:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:27,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:04:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:04:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:27,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 14:04:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:27,292 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-21 14:04:27,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:27,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320366357] [2022-11-21 14:04:27,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320366357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:27,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:04:27,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:04:27,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36316451] [2022-11-21 14:04:27,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:27,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 14:04:27,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:27,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 14:04:27,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:04:27,295 INFO L87 Difference]: Start difference. First operand 279 states and 346 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 14:04:27,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:27,771 INFO L93 Difference]: Finished difference Result 468 states and 578 transitions. [2022-11-21 14:04:27,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 14:04:27,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 102 [2022-11-21 14:04:27,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:27,774 INFO L225 Difference]: With dead ends: 468 [2022-11-21 14:04:27,775 INFO L226 Difference]: Without dead ends: 279 [2022-11-21 14:04:27,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:04:27,776 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 71 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:27,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 244 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 14:04:27,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2022-11-21 14:04:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 277. [2022-11-21 14:04:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 195 states have (on average 1.1333333333333333) internal successors, (221), 203 states have internal predecessors, (221), 55 states have call successors, (55), 21 states have call predecessors, (55), 26 states have return successors, (65), 52 states have call predecessors, (65), 53 states have call successors, (65) [2022-11-21 14:04:27,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 341 transitions. [2022-11-21 14:04:27,816 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 341 transitions. Word has length 102 [2022-11-21 14:04:27,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:27,817 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 341 transitions. [2022-11-21 14:04:27,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 14:04:27,817 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 341 transitions. [2022-11-21 14:04:27,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-21 14:04:27,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:27,819 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:04:27,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 14:04:27,820 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:27,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:27,820 INFO L85 PathProgramCache]: Analyzing trace with hash 193180447, now seen corresponding path program 1 times [2022-11-21 14:04:27,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:27,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555455646] [2022-11-21 14:04:27,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:27,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:29,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:04:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:29,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:04:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:29,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:04:29,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:29,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:04:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:29,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:30,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:04:30,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:30,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:04:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:30,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:04:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:30,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 14:04:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:30,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:04:30,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:30,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:04:30,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 14:04:30,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:30,366 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 14:04:30,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:04:30,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555455646] [2022-11-21 14:04:30,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555455646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:04:30,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494990397] [2022-11-21 14:04:30,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:30,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:30,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:04:30,372 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:04:30,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 14:04:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:04:30,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-21 14:04:30,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:04:31,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:04:31,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:04:32,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2022-11-21 14:04:32,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-21 14:04:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-21 14:04:32,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 14:04:32,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494990397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:04:32,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 14:04:32,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 27 [2022-11-21 14:04:32,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810483204] [2022-11-21 14:04:32,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:04:32,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 14:04:32,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:04:32,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 14:04:32,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2022-11-21 14:04:32,301 INFO L87 Difference]: Start difference. First operand 277 states and 341 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-21 14:04:34,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:36,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:38,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:41,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:43,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:45,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:47,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:49,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:51,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:54,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:56,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:04:58,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:04:58,172 INFO L93 Difference]: Finished difference Result 594 states and 730 transitions. [2022-11-21 14:04:58,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:04:58,173 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 110 [2022-11-21 14:04:58,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:04:58,176 INFO L225 Difference]: With dead ends: 594 [2022-11-21 14:04:58,176 INFO L226 Difference]: Without dead ends: 378 [2022-11-21 14:04:58,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2022-11-21 14:04:58,179 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 217 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 97 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:04:58,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 978 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1124 Invalid, 11 Unknown, 0 Unchecked, 25.5s Time] [2022-11-21 14:04:58,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-21 14:04:58,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 302. [2022-11-21 14:04:58,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 220 states have (on average 1.1227272727272728) internal successors, (247), 227 states have internal predecessors, (247), 52 states have call successors, (52), 23 states have call predecessors, (52), 29 states have return successors, (58), 51 states have call predecessors, (58), 50 states have call successors, (58) [2022-11-21 14:04:58,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 357 transitions. [2022-11-21 14:04:58,243 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 357 transitions. Word has length 110 [2022-11-21 14:04:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:04:58,244 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 357 transitions. [2022-11-21 14:04:58,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 11 states have internal predecessors, (72), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-21 14:04:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 357 transitions. [2022-11-21 14:04:58,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-21 14:04:58,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:04:58,247 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:04:58,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 14:04:58,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:04:58,458 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:04:58,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:04:58,458 INFO L85 PathProgramCache]: Analyzing trace with hash -63505454, now seen corresponding path program 1 times [2022-11-21 14:04:58,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:04:58,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982872902] [2022-11-21 14:04:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:04:58,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:04:58,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:05:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:05:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:05:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:05:00,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:05:00,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 14:05:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 14:05:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:05:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:05:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 14:05:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:00,540 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 14:05:00,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:00,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982872902] [2022-11-21 14:05:00,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982872902] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:05:00,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555315999] [2022-11-21 14:05:00,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:00,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:05:00,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:05:00,546 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:05:00,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 14:05:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:01,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-21 14:05:01,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:05:01,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 14:05:01,725 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 14:05:01,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:05:02,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-21 14:05:02,344 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-21 14:05:02,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555315999] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 14:05:02,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 14:05:02,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 27 [2022-11-21 14:05:02,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562452240] [2022-11-21 14:05:02,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 14:05:02,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 14:05:02,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:02,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 14:05:02,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-11-21 14:05:02,346 INFO L87 Difference]: Start difference. First operand 302 states and 357 transitions. Second operand has 27 states, 25 states have (on average 4.88) internal successors, (122), 21 states have internal predecessors, (122), 10 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2022-11-21 14:05:05,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:07,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:09,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:12,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:14,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:14,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:14,971 INFO L93 Difference]: Finished difference Result 546 states and 645 transitions. [2022-11-21 14:05:14,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 14:05:14,972 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 4.88) internal successors, (122), 21 states have internal predecessors, (122), 10 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) Word has length 104 [2022-11-21 14:05:14,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:14,974 INFO L225 Difference]: With dead ends: 546 [2022-11-21 14:05:14,974 INFO L226 Difference]: Without dead ends: 302 [2022-11-21 14:05:14,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=296, Invalid=1684, Unknown=0, NotChecked=0, Total=1980 [2022-11-21 14:05:14,977 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 619 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 250 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:14,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 628 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1587 Invalid, 5 Unknown, 0 Unchecked, 11.9s Time] [2022-11-21 14:05:14,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-21 14:05:15,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 298. [2022-11-21 14:05:15,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 215 states have (on average 1.1162790697674418) internal successors, (240), 222 states have internal predecessors, (240), 52 states have call successors, (52), 24 states have call predecessors, (52), 30 states have return successors, (58), 51 states have call predecessors, (58), 50 states have call successors, (58) [2022-11-21 14:05:15,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 350 transitions. [2022-11-21 14:05:15,022 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 350 transitions. Word has length 104 [2022-11-21 14:05:15,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:15,023 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 350 transitions. [2022-11-21 14:05:15,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 4.88) internal successors, (122), 21 states have internal predecessors, (122), 10 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2022-11-21 14:05:15,023 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 350 transitions. [2022-11-21 14:05:15,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-21 14:05:15,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:15,025 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:05:15,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 14:05:15,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-21 14:05:15,236 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:15,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:15,237 INFO L85 PathProgramCache]: Analyzing trace with hash -335461550, now seen corresponding path program 1 times [2022-11-21 14:05:15,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:15,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979871941] [2022-11-21 14:05:15,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:15,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:05:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:05:16,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:05:16,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:05:16,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:05:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:05:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:05:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:05:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 14:05:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:16,269 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-21 14:05:16,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:16,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979871941] [2022-11-21 14:05:16,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979871941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:16,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:16,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 14:05:16,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421726670] [2022-11-21 14:05:16,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:16,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 14:05:16,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:16,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 14:05:16,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:05:16,272 INFO L87 Difference]: Start difference. First operand 298 states and 350 transitions. Second operand has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 14:05:17,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:17,278 INFO L93 Difference]: Finished difference Result 320 states and 373 transitions. [2022-11-21 14:05:17,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:05:17,279 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 104 [2022-11-21 14:05:17,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:17,281 INFO L225 Difference]: With dead ends: 320 [2022-11-21 14:05:17,281 INFO L226 Difference]: Without dead ends: 318 [2022-11-21 14:05:17,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-11-21 14:05:17,282 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 89 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:17,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 650 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-21 14:05:17,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-21 14:05:17,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 309. [2022-11-21 14:05:17,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 223 states have (on average 1.1121076233183858) internal successors, (248), 231 states have internal predecessors, (248), 53 states have call successors, (53), 25 states have call predecessors, (53), 32 states have return successors, (61), 52 states have call predecessors, (61), 51 states have call successors, (61) [2022-11-21 14:05:17,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 362 transitions. [2022-11-21 14:05:17,328 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 362 transitions. Word has length 104 [2022-11-21 14:05:17,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:17,328 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 362 transitions. [2022-11-21 14:05:17,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 14:05:17,329 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 362 transitions. [2022-11-21 14:05:17,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-21 14:05:17,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:17,331 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-11-21 14:05:17,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 14:05:17,331 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:17,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:17,332 INFO L85 PathProgramCache]: Analyzing trace with hash 365603028, now seen corresponding path program 1 times [2022-11-21 14:05:17,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:17,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723068472] [2022-11-21 14:05:17,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:17,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:05:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:18,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:05:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:18,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:05:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:18,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:18,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:05:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:18,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:05:18,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:18,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:05:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:18,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 14:05:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 14:05:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 14:05:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-21 14:05:18,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:18,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723068472] [2022-11-21 14:05:18,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723068472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:05:18,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:05:18,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-21 14:05:18,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676399703] [2022-11-21 14:05:18,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:05:18,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 14:05:18,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:18,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 14:05:18,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-21 14:05:18,643 INFO L87 Difference]: Start difference. First operand 309 states and 362 transitions. Second operand has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 14:05:19,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:05:19,987 INFO L93 Difference]: Finished difference Result 326 states and 378 transitions. [2022-11-21 14:05:19,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 14:05:19,988 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 104 [2022-11-21 14:05:19,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:05:19,994 INFO L225 Difference]: With dead ends: 326 [2022-11-21 14:05:19,994 INFO L226 Difference]: Without dead ends: 324 [2022-11-21 14:05:19,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-11-21 14:05:19,996 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 107 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:05:19,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 759 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 14:05:19,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2022-11-21 14:05:20,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 302. [2022-11-21 14:05:20,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 218 states have (on average 1.114678899082569) internal successors, (243), 225 states have internal predecessors, (243), 52 states have call successors, (52), 25 states have call predecessors, (52), 31 states have return successors, (58), 51 states have call predecessors, (58), 50 states have call successors, (58) [2022-11-21 14:05:20,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 353 transitions. [2022-11-21 14:05:20,054 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 353 transitions. Word has length 104 [2022-11-21 14:05:20,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:05:20,054 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 353 transitions. [2022-11-21 14:05:20,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.153846153846154) internal successors, (54), 11 states have internal predecessors, (54), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 14:05:20,055 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 353 transitions. [2022-11-21 14:05:20,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-21 14:05:20,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:05:20,057 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:05:20,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 14:05:20,057 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:05:20,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:05:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1502069968, now seen corresponding path program 1 times [2022-11-21 14:05:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:05:20,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135978498] [2022-11-21 14:05:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:20,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:05:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:05:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:05:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:05:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:05:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:05:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:05:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:05:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:05:22,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 14:05:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 14:05:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:22,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 14:05:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-21 14:05:23,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:05:23,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135978498] [2022-11-21 14:05:23,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135978498] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:05:23,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263495339] [2022-11-21 14:05:23,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:05:23,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:05:23,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:05:23,071 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:05:23,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 14:05:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:05:23,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-21 14:05:23,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:05:23,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:05:24,282 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 14:05:24,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 14:05:24,303 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:05:25,319 INFO L321 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-11-21 14:05:25,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-11-21 14:05:25,484 INFO L321 Elim1Store]: treesize reduction 28, result has 28.2 percent of original size [2022-11-21 14:05:25,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 22 [2022-11-21 14:05:25,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:05:25,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:05:25,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:05:25,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-21 14:05:25,844 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 14:05:25,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 14:05:30,538 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 44 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 14:05:30,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:05:31,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263495339] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:05:31,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:05:31,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 24] total 39 [2022-11-21 14:05:31,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509963092] [2022-11-21 14:05:31,066 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:05:31,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-21 14:05:31,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:05:31,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-21 14:05:31,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1716, Unknown=5, NotChecked=0, Total=1892 [2022-11-21 14:05:31,070 INFO L87 Difference]: Start difference. First operand 302 states and 353 transitions. Second operand has 39 states, 37 states have (on average 3.7027027027027026) internal successors, (137), 34 states have internal predecessors, (137), 15 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (24), 12 states have call predecessors, (24), 14 states have call successors, (24) [2022-11-21 14:05:33,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:38,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:40,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:42,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:51,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:57,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:05:59,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:01,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:04,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:06,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:12,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:14,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:16,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:16,653 INFO L93 Difference]: Finished difference Result 743 states and 862 transitions. [2022-11-21 14:06:16,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-21 14:06:16,654 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 3.7027027027027026) internal successors, (137), 34 states have internal predecessors, (137), 15 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (24), 12 states have call predecessors, (24), 14 states have call successors, (24) Word has length 116 [2022-11-21 14:06:16,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:16,657 INFO L225 Difference]: With dead ends: 743 [2022-11-21 14:06:16,658 INFO L226 Difference]: Without dead ends: 534 [2022-11-21 14:06:16,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 137 SyntacticMatches, 7 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2105 ImplicationChecksByTransitivity, 20.5s TimeCoverageRelationStatistics Valid=946, Invalid=5846, Unknown=14, NotChecked=0, Total=6806 [2022-11-21 14:06:16,661 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 928 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 3545 mSolverCounterSat, 160 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 3733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 3545 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:16,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [956 Valid, 590 Invalid, 3733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 3545 Invalid, 28 Unknown, 0 Unchecked, 31.4s Time] [2022-11-21 14:06:16,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-11-21 14:06:16,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 294. [2022-11-21 14:06:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 226 states have (on average 1.1017699115044248) internal successors, (249), 231 states have internal predecessors, (249), 38 states have call successors, (38), 25 states have call predecessors, (38), 29 states have return successors, (41), 37 states have call predecessors, (41), 37 states have call successors, (41) [2022-11-21 14:06:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 328 transitions. [2022-11-21 14:06:16,715 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 328 transitions. Word has length 116 [2022-11-21 14:06:16,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:16,716 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 328 transitions. [2022-11-21 14:06:16,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 3.7027027027027026) internal successors, (137), 34 states have internal predecessors, (137), 15 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (24), 12 states have call predecessors, (24), 14 states have call successors, (24) [2022-11-21 14:06:16,716 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 328 transitions. [2022-11-21 14:06:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-21 14:06:16,718 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:16,718 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:06:16,735 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-21 14:06:16,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:06:16,929 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:16,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:16,930 INFO L85 PathProgramCache]: Analyzing trace with hash -333479690, now seen corresponding path program 1 times [2022-11-21 14:06:16,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:16,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014430722] [2022-11-21 14:06:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:16,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:18,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:06:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:18,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:06:18,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:18,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:06:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:18,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:06:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:06:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:18,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:06:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:06:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:06:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:06:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 14:06:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 14:06:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 14:06:19,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:19,744 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 14:06:19,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:19,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014430722] [2022-11-21 14:06:19,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014430722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:19,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:19,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-21 14:06:19,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282523676] [2022-11-21 14:06:19,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:19,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 14:06:19,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:19,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 14:06:19,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-11-21 14:06:19,748 INFO L87 Difference]: Start difference. First operand 294 states and 328 transitions. Second operand has 19 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 16 states have internal predecessors, (66), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-21 14:06:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:22,325 INFO L93 Difference]: Finished difference Result 409 states and 478 transitions. [2022-11-21 14:06:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 14:06:22,325 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 16 states have internal predecessors, (66), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 116 [2022-11-21 14:06:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:22,328 INFO L225 Difference]: With dead ends: 409 [2022-11-21 14:06:22,328 INFO L226 Difference]: Without dead ends: 344 [2022-11-21 14:06:22,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2022-11-21 14:06:22,330 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 263 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 1868 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1868 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:22,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 400 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1868 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 14:06:22,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-21 14:06:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 305. [2022-11-21 14:06:22,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 233 states have (on average 1.094420600858369) internal successors, (255), 239 states have internal predecessors, (255), 40 states have call successors, (40), 25 states have call predecessors, (40), 31 states have return successors, (46), 40 states have call predecessors, (46), 39 states have call successors, (46) [2022-11-21 14:06:22,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 341 transitions. [2022-11-21 14:06:22,403 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 341 transitions. Word has length 116 [2022-11-21 14:06:22,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:22,404 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 341 transitions. [2022-11-21 14:06:22,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.6666666666666665) internal successors, (66), 16 states have internal predecessors, (66), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-21 14:06:22,404 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 341 transitions. [2022-11-21 14:06:22,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-21 14:06:22,406 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:22,406 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:06:22,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 14:06:22,407 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:22,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:22,407 INFO L85 PathProgramCache]: Analyzing trace with hash -75314252, now seen corresponding path program 1 times [2022-11-21 14:06:22,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:22,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066130136] [2022-11-21 14:06:22,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:22,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:22,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:06:22,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:22,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:06:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:22,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:06:22,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:22,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:06:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:22,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:06:22,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:22,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:06:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:06:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:06:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:23,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:06:23,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:23,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 14:06:23,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 14:06:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 14:06:23,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-21 14:06:23,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:23,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066130136] [2022-11-21 14:06:23,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066130136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:06:23,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:06:23,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:06:23,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668824272] [2022-11-21 14:06:23,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:06:23,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:06:23,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:23,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:06:23,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:06:23,156 INFO L87 Difference]: Start difference. First operand 305 states and 341 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-21 14:06:23,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:06:23,878 INFO L93 Difference]: Finished difference Result 382 states and 435 transitions. [2022-11-21 14:06:23,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:06:23,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 116 [2022-11-21 14:06:23,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:06:23,881 INFO L225 Difference]: With dead ends: 382 [2022-11-21 14:06:23,881 INFO L226 Difference]: Without dead ends: 308 [2022-11-21 14:06:23,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:06:23,882 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 97 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:06:23,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 255 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 14:06:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-21 14:06:23,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 303. [2022-11-21 14:06:23,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 231 states have (on average 1.0865800865800865) internal successors, (251), 237 states have internal predecessors, (251), 40 states have call successors, (40), 25 states have call predecessors, (40), 31 states have return successors, (46), 40 states have call predecessors, (46), 39 states have call successors, (46) [2022-11-21 14:06:23,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 337 transitions. [2022-11-21 14:06:23,970 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 337 transitions. Word has length 116 [2022-11-21 14:06:23,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:06:23,971 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 337 transitions. [2022-11-21 14:06:23,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-21 14:06:23,971 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 337 transitions. [2022-11-21 14:06:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-21 14:06:23,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:06:23,972 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:06:23,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-21 14:06:23,973 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:06:23,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:06:23,973 INFO L85 PathProgramCache]: Analyzing trace with hash 286245061, now seen corresponding path program 1 times [2022-11-21 14:06:23,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:06:23,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630371583] [2022-11-21 14:06:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:23,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:06:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:06:26,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:06:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:06:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:06:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:06:26,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:06:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:06:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:26,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 14:06:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:06:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-21 14:06:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:27,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:06:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:27,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:06:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:27,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 14:06:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:27,530 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-21 14:06:27,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:06:27,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630371583] [2022-11-21 14:06:27,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630371583] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:06:27,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89384243] [2022-11-21 14:06:27,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:06:27,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:06:27,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:06:27,531 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:06:27,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 14:06:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:06:28,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-21 14:06:28,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:06:28,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:06:28,440 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:06:33,521 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:06:33,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-11-21 14:06:33,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-21 14:06:33,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:33,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-21 14:06:35,915 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:06:35,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-11-21 14:06:35,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:06:35,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-21 14:06:35,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-11-21 14:06:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 44 proven. 23 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 14:06:36,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:06:38,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89384243] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:06:38,489 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:06:38,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27] total 45 [2022-11-21 14:06:38,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754394426] [2022-11-21 14:06:38,489 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:06:38,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-21 14:06:38,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:06:38,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-21 14:06:38,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2665, Unknown=8, NotChecked=0, Total=2862 [2022-11-21 14:06:38,493 INFO L87 Difference]: Start difference. First operand 303 states and 337 transitions. Second operand has 45 states, 41 states have (on average 3.292682926829268) internal successors, (135), 37 states have internal predecessors, (135), 19 states have call successors, (27), 8 states have call predecessors, (27), 12 states have return successors, (26), 14 states have call predecessors, (26), 19 states have call successors, (26) [2022-11-21 14:06:41,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:43,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:46,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:54,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:56,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:06:58,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:05,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:08,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:07:13,262 INFO L93 Difference]: Finished difference Result 422 states and 478 transitions. [2022-11-21 14:07:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-11-21 14:07:13,262 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 3.292682926829268) internal successors, (135), 37 states have internal predecessors, (135), 19 states have call successors, (27), 8 states have call predecessors, (27), 12 states have return successors, (26), 14 states have call predecessors, (26), 19 states have call successors, (26) Word has length 117 [2022-11-21 14:07:13,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:07:13,264 INFO L225 Difference]: With dead ends: 422 [2022-11-21 14:07:13,264 INFO L226 Difference]: Without dead ends: 305 [2022-11-21 14:07:13,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3209 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=1272, Invalid=10274, Unknown=10, NotChecked=0, Total=11556 [2022-11-21 14:07:13,269 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 698 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 4642 mSolverCounterSat, 224 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 4874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 4642 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2022-11-21 14:07:13,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 784 Invalid, 4874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 4642 Invalid, 8 Unknown, 0 Unchecked, 22.4s Time] [2022-11-21 14:07:13,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-21 14:07:13,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 292. [2022-11-21 14:07:13,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 223 states have (on average 1.0852017937219731) internal successors, (242), 228 states have internal predecessors, (242), 38 states have call successors, (38), 25 states have call predecessors, (38), 30 states have return successors, (43), 38 states have call predecessors, (43), 37 states have call successors, (43) [2022-11-21 14:07:13,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 323 transitions. [2022-11-21 14:07:13,324 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 323 transitions. Word has length 117 [2022-11-21 14:07:13,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:07:13,324 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 323 transitions. [2022-11-21 14:07:13,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 3.292682926829268) internal successors, (135), 37 states have internal predecessors, (135), 19 states have call successors, (27), 8 states have call predecessors, (27), 12 states have return successors, (26), 14 states have call predecessors, (26), 19 states have call successors, (26) [2022-11-21 14:07:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 323 transitions. [2022-11-21 14:07:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-21 14:07:13,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:07:13,326 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:07:13,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-21 14:07:13,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-21 14:07:13,538 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:07:13,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:07:13,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1522802117, now seen corresponding path program 1 times [2022-11-21 14:07:13,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:07:13,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805881714] [2022-11-21 14:07:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:07:13,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:07:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:07:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:07:14,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:07:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:07:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:07:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:07:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:07:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:07:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:07:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 14:07:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 14:07:14,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 14:07:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:14,387 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-21 14:07:14,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:07:14,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805881714] [2022-11-21 14:07:14,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805881714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:07:14,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:07:14,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 14:07:14,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322763943] [2022-11-21 14:07:14,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:07:14,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 14:07:14,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:07:14,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 14:07:14,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-21 14:07:14,390 INFO L87 Difference]: Start difference. First operand 292 states and 323 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-21 14:07:15,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:07:15,393 INFO L93 Difference]: Finished difference Result 318 states and 350 transitions. [2022-11-21 14:07:15,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 14:07:15,393 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 118 [2022-11-21 14:07:15,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:07:15,395 INFO L225 Difference]: With dead ends: 318 [2022-11-21 14:07:15,395 INFO L226 Difference]: Without dead ends: 316 [2022-11-21 14:07:15,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-11-21 14:07:15,396 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 162 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:07:15,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 630 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 14:07:15,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-11-21 14:07:15,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 300. [2022-11-21 14:07:15,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 230 states have (on average 1.0826086956521739) internal successors, (249), 236 states have internal predecessors, (249), 38 states have call successors, (38), 25 states have call predecessors, (38), 31 states have return successors, (44), 38 states have call predecessors, (44), 37 states have call successors, (44) [2022-11-21 14:07:15,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 331 transitions. [2022-11-21 14:07:15,453 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 331 transitions. Word has length 118 [2022-11-21 14:07:15,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:07:15,454 INFO L495 AbstractCegarLoop]: Abstraction has 300 states and 331 transitions. [2022-11-21 14:07:15,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-21 14:07:15,454 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 331 transitions. [2022-11-21 14:07:15,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-21 14:07:15,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:07:15,456 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:07:15,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-21 14:07:15,456 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:07:15,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:07:15,457 INFO L85 PathProgramCache]: Analyzing trace with hash -821737539, now seen corresponding path program 1 times [2022-11-21 14:07:15,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:07:15,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905749190] [2022-11-21 14:07:15,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:07:15,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:07:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:17,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:07:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:17,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:07:17,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:17,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:07:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:17,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:07:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:17,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:07:17,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:17,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:07:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:17,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:07:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:07:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:07:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:18,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 14:07:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:18,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 14:07:18,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 14:07:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:18,638 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 14:07:18,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:07:18,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905749190] [2022-11-21 14:07:18,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905749190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:07:18,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:07:18,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-21 14:07:18,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879406399] [2022-11-21 14:07:18,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:07:18,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-21 14:07:18,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:07:18,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-21 14:07:18,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-21 14:07:18,641 INFO L87 Difference]: Start difference. First operand 300 states and 331 transitions. Second operand has 18 states, 17 states have (on average 4.0) internal successors, (68), 15 states have internal predecessors, (68), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-21 14:07:21,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:07:21,115 INFO L93 Difference]: Finished difference Result 406 states and 469 transitions. [2022-11-21 14:07:21,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 14:07:21,115 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 15 states have internal predecessors, (68), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 118 [2022-11-21 14:07:21,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:07:21,118 INFO L225 Difference]: With dead ends: 406 [2022-11-21 14:07:21,118 INFO L226 Difference]: Without dead ends: 340 [2022-11-21 14:07:21,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2022-11-21 14:07:21,119 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 307 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 1977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:07:21,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 356 Invalid, 1977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 14:07:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-11-21 14:07:21,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 294. [2022-11-21 14:07:21,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 225 states have (on average 1.08) internal successors, (243), 230 states have internal predecessors, (243), 38 states have call successors, (38), 25 states have call predecessors, (38), 30 states have return successors, (43), 38 states have call predecessors, (43), 37 states have call successors, (43) [2022-11-21 14:07:21,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 324 transitions. [2022-11-21 14:07:21,177 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 324 transitions. Word has length 118 [2022-11-21 14:07:21,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:07:21,178 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 324 transitions. [2022-11-21 14:07:21,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.0) internal successors, (68), 15 states have internal predecessors, (68), 7 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-21 14:07:21,178 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 324 transitions. [2022-11-21 14:07:21,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-21 14:07:21,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:07:21,180 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:07:21,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-21 14:07:21,181 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:07:21,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:07:21,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1722213330, now seen corresponding path program 1 times [2022-11-21 14:07:21,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:07:21,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027719442] [2022-11-21 14:07:21,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:07:21,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:07:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:23,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:07:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:23,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:07:23,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:07:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:07:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:07:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:23,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:07:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:23,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:07:23,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:23,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 14:07:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:23,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:07:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:24,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:07:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:24,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 14:07:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 14:07:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-21 14:07:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-11-21 14:07:24,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:07:24,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027719442] [2022-11-21 14:07:24,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027719442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:07:24,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916998777] [2022-11-21 14:07:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:07:24,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:07:24,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:07:24,393 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:07:24,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 14:07:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:07:25,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-21 14:07:25,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:07:25,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:07:25,669 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-21 14:07:25,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 31 [2022-11-21 14:07:25,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 30 [2022-11-21 14:07:30,554 INFO L321 Elim1Store]: treesize reduction 89, result has 27.6 percent of original size [2022-11-21 14:07:30,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 106 [2022-11-21 14:07:30,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-21 14:07:30,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-21 14:07:30,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 26 [2022-11-21 14:07:30,719 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-11-21 14:07:39,912 INFO L321 Elim1Store]: treesize reduction 122, result has 0.8 percent of original size [2022-11-21 14:07:39,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 73 [2022-11-21 14:07:39,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-11-21 14:07:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-21 14:07:44,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:07:50,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916998777] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:07:50,772 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:07:50,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 33 [2022-11-21 14:07:50,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467409588] [2022-11-21 14:07:50,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:07:50,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-21 14:07:50,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:07:50,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-21 14:07:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=999, Unknown=10, NotChecked=0, Total=1122 [2022-11-21 14:07:50,775 INFO L87 Difference]: Start difference. First operand 294 states and 324 transitions. Second operand has 33 states, 29 states have (on average 4.068965517241379) internal successors, (118), 25 states have internal predecessors, (118), 14 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (24), 10 states have call predecessors, (24), 14 states have call successors, (24) [2022-11-21 14:07:53,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:55,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:57,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:07:59,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:01,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:03,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:06,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:08,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:10,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:13,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:15,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:17,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:19,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:21,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:23,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:26,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:28,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:34,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:36,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:39,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:41,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:47,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:49,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:51,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:53,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:55,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:08:57,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:03,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:06,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:08,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:18,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:20,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:22,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:33,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:35,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:37,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:40,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:42,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:09:46,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:09:46,005 INFO L93 Difference]: Finished difference Result 597 states and 671 transitions. [2022-11-21 14:09:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-21 14:09:46,006 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 29 states have (on average 4.068965517241379) internal successors, (118), 25 states have internal predecessors, (118), 14 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (24), 10 states have call predecessors, (24), 14 states have call successors, (24) Word has length 123 [2022-11-21 14:09:46,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:09:46,010 INFO L225 Difference]: With dead ends: 597 [2022-11-21 14:09:46,010 INFO L226 Difference]: Without dead ends: 434 [2022-11-21 14:09:46,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 153 SyntacticMatches, 5 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1626 ImplicationChecksByTransitivity, 53.7s TimeCoverageRelationStatistics Valid=583, Invalid=4789, Unknown=30, NotChecked=0, Total=5402 [2022-11-21 14:09:46,012 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 447 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 4157 mSolverCounterSat, 233 mSolverCounterUnsat, 173 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 4563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 4157 IncrementalHoareTripleChecker+Invalid, 173 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 85.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:09:46,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1215 Invalid, 4563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 4157 Invalid, 173 Unknown, 0 Unchecked, 85.6s Time] [2022-11-21 14:09:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-21 14:09:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 345. [2022-11-21 14:09:46,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 260 states have (on average 1.0923076923076922) internal successors, (284), 263 states have internal predecessors, (284), 50 states have call successors, (50), 32 states have call predecessors, (50), 34 states have return successors, (50), 49 states have call predecessors, (50), 48 states have call successors, (50) [2022-11-21 14:09:46,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 384 transitions. [2022-11-21 14:09:46,106 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 384 transitions. Word has length 123 [2022-11-21 14:09:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:09:46,106 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 384 transitions. [2022-11-21 14:09:46,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 29 states have (on average 4.068965517241379) internal successors, (118), 25 states have internal predecessors, (118), 14 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (24), 10 states have call predecessors, (24), 14 states have call successors, (24) [2022-11-21 14:09:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 384 transitions. [2022-11-21 14:09:46,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-21 14:09:46,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:09:46,109 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:09:46,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 14:09:46,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-21 14:09:46,321 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:09:46,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:09:46,322 INFO L85 PathProgramCache]: Analyzing trace with hash -706686607, now seen corresponding path program 1 times [2022-11-21 14:09:46,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:09:46,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601684828] [2022-11-21 14:09:46,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:46,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:09:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:09:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:46,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:09:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:09:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:09:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:09:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:09:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 14:09:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-21 14:09:46,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 14:09:46,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 14:09:46,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 14:09:46,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-11-21 14:09:46,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:09:46,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601684828] [2022-11-21 14:09:46,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601684828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:09:46,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:09:46,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:09:46,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107281335] [2022-11-21 14:09:46,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:09:46,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:09:46,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:09:46,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:09:46,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:09:46,808 INFO L87 Difference]: Start difference. First operand 345 states and 384 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-21 14:09:47,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:09:47,408 INFO L93 Difference]: Finished difference Result 437 states and 497 transitions. [2022-11-21 14:09:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:09:47,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2022-11-21 14:09:47,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:09:47,410 INFO L225 Difference]: With dead ends: 437 [2022-11-21 14:09:47,410 INFO L226 Difference]: Without dead ends: 345 [2022-11-21 14:09:47,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-11-21 14:09:47,412 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 90 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:09:47,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 236 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 14:09:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-21 14:09:47,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-11-21 14:09:47,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 260 states have (on average 1.0846153846153845) internal successors, (282), 263 states have internal predecessors, (282), 50 states have call successors, (50), 32 states have call predecessors, (50), 34 states have return successors, (50), 49 states have call predecessors, (50), 48 states have call successors, (50) [2022-11-21 14:09:47,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 382 transitions. [2022-11-21 14:09:47,501 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 382 transitions. Word has length 130 [2022-11-21 14:09:47,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:09:47,502 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 382 transitions. [2022-11-21 14:09:47,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-21 14:09:47,502 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 382 transitions. [2022-11-21 14:09:47,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-21 14:09:47,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:09:47,504 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:09:47,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-21 14:09:47,504 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:09:47,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:09:47,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2040989381, now seen corresponding path program 1 times [2022-11-21 14:09:47,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:09:47,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261122468] [2022-11-21 14:09:47,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:47,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:09:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:09:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:09:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:48,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:09:48,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:09:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:09:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 14:09:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:09:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 14:09:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:09:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 14:09:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:48,410 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-21 14:09:48,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:09:48,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261122468] [2022-11-21 14:09:48,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261122468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:09:48,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:09:48,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:09:48,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659906987] [2022-11-21 14:09:48,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:09:48,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:09:48,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:09:48,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:09:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:09:48,413 INFO L87 Difference]: Start difference. First operand 345 states and 382 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 14:09:49,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:09:49,089 INFO L93 Difference]: Finished difference Result 514 states and 582 transitions. [2022-11-21 14:09:49,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:09:49,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-11-21 14:09:49,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:09:49,091 INFO L225 Difference]: With dead ends: 514 [2022-11-21 14:09:49,091 INFO L226 Difference]: Without dead ends: 353 [2022-11-21 14:09:49,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-21 14:09:49,092 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 142 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 14:09:49,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 237 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 14:09:49,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-21 14:09:49,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 345. [2022-11-21 14:09:49,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 260 states have (on average 1.073076923076923) internal successors, (279), 263 states have internal predecessors, (279), 50 states have call successors, (50), 32 states have call predecessors, (50), 34 states have return successors, (50), 49 states have call predecessors, (50), 48 states have call successors, (50) [2022-11-21 14:09:49,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 379 transitions. [2022-11-21 14:09:49,185 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 379 transitions. Word has length 129 [2022-11-21 14:09:49,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:09:49,185 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 379 transitions. [2022-11-21 14:09:49,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 14:09:49,186 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 379 transitions. [2022-11-21 14:09:49,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-21 14:09:49,187 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:09:49,187 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:09:49,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-21 14:09:49,188 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:09:49,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:09:49,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1646622595, now seen corresponding path program 1 times [2022-11-21 14:09:49,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:09:49,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022207726] [2022-11-21 14:09:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:49,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:09:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:09:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:09:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:09:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:09:51,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:09:51,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 14:09:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:09:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 14:09:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:09:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:51,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 14:09:51,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-11-21 14:09:52,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:09:52,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022207726] [2022-11-21 14:09:52,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022207726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:09:52,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:09:52,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-21 14:09:52,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812348341] [2022-11-21 14:09:52,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:09:52,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-21 14:09:52,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:09:52,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-21 14:09:52,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-11-21 14:09:52,208 INFO L87 Difference]: Start difference. First operand 345 states and 379 transitions. Second operand has 21 states, 20 states have (on average 3.7) internal successors, (74), 18 states have internal predecessors, (74), 7 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-21 14:09:55,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:09:55,264 INFO L93 Difference]: Finished difference Result 430 states and 477 transitions. [2022-11-21 14:09:55,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 14:09:55,265 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.7) internal successors, (74), 18 states have internal predecessors, (74), 7 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 129 [2022-11-21 14:09:55,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:09:55,266 INFO L225 Difference]: With dead ends: 430 [2022-11-21 14:09:55,266 INFO L226 Difference]: Without dead ends: 351 [2022-11-21 14:09:55,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2022-11-21 14:09:55,267 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 226 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 2295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-21 14:09:55,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 792 Invalid, 2295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-21 14:09:55,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-21 14:09:55,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 343. [2022-11-21 14:09:55,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 258 states have (on average 1.065891472868217) internal successors, (275), 261 states have internal predecessors, (275), 50 states have call successors, (50), 32 states have call predecessors, (50), 34 states have return successors, (50), 49 states have call predecessors, (50), 48 states have call successors, (50) [2022-11-21 14:09:55,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 375 transitions. [2022-11-21 14:09:55,347 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 375 transitions. Word has length 129 [2022-11-21 14:09:55,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:09:55,348 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 375 transitions. [2022-11-21 14:09:55,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.7) internal successors, (74), 18 states have internal predecessors, (74), 7 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-11-21 14:09:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 375 transitions. [2022-11-21 14:09:55,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-21 14:09:55,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:09:55,350 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:09:55,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-21 14:09:55,350 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:09:55,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:09:55,351 INFO L85 PathProgramCache]: Analyzing trace with hash 366758917, now seen corresponding path program 1 times [2022-11-21 14:09:55,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:09:55,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846963423] [2022-11-21 14:09:55,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:55,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:09:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:58,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:09:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:58,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:09:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:58,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:09:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:58,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:58,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:09:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:58,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:09:58,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:58,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:09:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:58,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 14:09:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:59,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:09:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:09:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:59,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 14:09:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:59,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:09:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:59,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 14:09:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:09:59,501 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-21 14:09:59,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:09:59,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846963423] [2022-11-21 14:09:59,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846963423] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:09:59,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367239680] [2022-11-21 14:09:59,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:09:59,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:09:59,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:09:59,503 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:09:59,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 14:10:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:10:00,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 2768 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-21 14:10:00,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:10:00,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:10:00,727 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 14:10:00,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 14:10:00,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-21 14:10:01,375 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-21 14:10:01,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 26 [2022-11-21 14:10:01,566 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:10:01,566 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-11-21 14:10:02,252 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:10:02,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2022-11-21 14:10:02,395 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-21 14:10:02,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-21 14:10:17,986 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:10:17,986 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-21 14:10:18,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 14:10:18,048 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-21 14:10:18,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2022-11-21 14:10:18,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 14:10:18,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:10:18,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-11-21 14:10:18,141 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 14:10:18,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 14:10:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:10:28,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:10:31,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367239680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:10:31,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:10:31,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 36] total 52 [2022-11-21 14:10:31,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069375515] [2022-11-21 14:10:31,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:10:31,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-21 14:10:31,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:10:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-21 14:10:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=3701, Unknown=19, NotChecked=0, Total=4032 [2022-11-21 14:10:31,646 INFO L87 Difference]: Start difference. First operand 343 states and 375 transitions. Second operand has 52 states, 50 states have (on average 3.32) internal successors, (166), 46 states have internal predecessors, (166), 16 states have call successors, (26), 11 states have call predecessors, (26), 14 states have return successors, (25), 13 states have call predecessors, (25), 15 states have call successors, (25) [2022-11-21 14:10:33,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:10:52,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:11:04,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:11:08,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:11:20,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:11:46,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:11:46,095 INFO L93 Difference]: Finished difference Result 430 states and 474 transitions. [2022-11-21 14:11:46,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 14:11:46,096 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 3.32) internal successors, (166), 46 states have internal predecessors, (166), 16 states have call successors, (26), 11 states have call predecessors, (26), 14 states have return successors, (25), 13 states have call predecessors, (25), 15 states have call successors, (25) Word has length 129 [2022-11-21 14:11:46,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:11:46,098 INFO L225 Difference]: With dead ends: 430 [2022-11-21 14:11:46,099 INFO L226 Difference]: Without dead ends: 358 [2022-11-21 14:11:46,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 132 SyntacticMatches, 9 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2974 ImplicationChecksByTransitivity, 83.1s TimeCoverageRelationStatistics Valid=831, Invalid=7512, Unknown=29, NotChecked=0, Total=8372 [2022-11-21 14:11:46,102 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 822 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 3419 mSolverCounterSat, 272 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 3706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 3419 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2022-11-21 14:11:46,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 538 Invalid, 3706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 3419 Invalid, 15 Unknown, 0 Unchecked, 21.2s Time] [2022-11-21 14:11:46,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-21 14:11:46,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 344. [2022-11-21 14:11:46,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 257 states have (on average 1.0700389105058365) internal successors, (275), 260 states have internal predecessors, (275), 50 states have call successors, (50), 34 states have call predecessors, (50), 36 states have return successors, (50), 49 states have call predecessors, (50), 48 states have call successors, (50) [2022-11-21 14:11:46,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 375 transitions. [2022-11-21 14:11:46,207 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 375 transitions. Word has length 129 [2022-11-21 14:11:46,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:11:46,208 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 375 transitions. [2022-11-21 14:11:46,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 3.32) internal successors, (166), 46 states have internal predecessors, (166), 16 states have call successors, (26), 11 states have call predecessors, (26), 14 states have return successors, (25), 13 states have call predecessors, (25), 15 states have call successors, (25) [2022-11-21 14:11:46,208 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 375 transitions. [2022-11-21 14:11:46,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-21 14:11:46,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:11:46,210 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-21 14:11:46,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 14:11:46,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-21 14:11:46,422 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:11:46,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:11:46,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1479754423, now seen corresponding path program 1 times [2022-11-21 14:11:46,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:11:46,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068036490] [2022-11-21 14:11:46,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:11:46,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:11:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:54,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-21 14:11:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:54,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-21 14:11:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:54,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 14:11:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:54,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:11:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:55,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-21 14:11:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:55,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 14:11:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:55,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 14:11:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:55,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 14:11:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 14:11:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:56,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:11:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:56,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 14:11:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:56,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 14:11:56,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:56,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 14:11:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 32 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-21 14:11:57,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:11:57,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068036490] [2022-11-21 14:11:57,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068036490] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:11:57,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060519492] [2022-11-21 14:11:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:11:57,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 14:11:57,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:11:57,414 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 14:11:57,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e99561c6-65a6-42fe-b542-fe29590bf00b/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 14:11:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:11:58,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 2770 conjuncts, 140 conjunts are in the unsatisfiable core [2022-11-21 14:11:58,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 14:11:58,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 14:11:58,714 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-21 14:11:58,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-21 14:11:58,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 14:11:59,891 INFO L321 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2022-11-21 14:11:59,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 26 [2022-11-21 14:12:00,162 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-21 14:12:00,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 41 [2022-11-21 14:12:00,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 41 [2022-11-21 14:12:01,101 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-21 14:12:01,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-21 14:12:03,854 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_cursor_from_buf_#in~buf.offset_BEFORE_CALL_26| Int) (|v_aws_byte_cursor_from_buf_#in~buf.base_BEFORE_CALL_26| Int)) (let ((.cse0 (select |c_#memory_int| |v_aws_byte_cursor_from_buf_#in~buf.base_BEFORE_CALL_26|))) (<= (mod (select .cse0 |v_aws_byte_cursor_from_buf_#in~buf.offset_BEFORE_CALL_26|) 18446744073709551616) (mod (select .cse0 (+ 16 |v_aws_byte_cursor_from_buf_#in~buf.offset_BEFORE_CALL_26|)) 18446744073709551616)))) is different from true [2022-11-21 14:12:04,263 INFO L321 Elim1Store]: treesize reduction 40, result has 18.4 percent of original size [2022-11-21 14:12:04,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 67 [2022-11-21 14:12:04,300 INFO L321 Elim1Store]: treesize reduction 42, result has 14.3 percent of original size [2022-11-21 14:12:04,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 38 [2022-11-21 14:12:04,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 14:12:04,327 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-21 14:12:04,391 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2022-11-21 14:12:04,438 INFO L321 Elim1Store]: treesize reduction 16, result has 46.7 percent of original size [2022-11-21 14:12:04,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 53 [2022-11-21 14:12:04,892 INFO L321 Elim1Store]: treesize reduction 40, result has 18.4 percent of original size [2022-11-21 14:12:04,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 67 [2022-11-21 14:12:04,933 INFO L321 Elim1Store]: treesize reduction 38, result has 22.4 percent of original size [2022-11-21 14:12:04,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 42 [2022-11-21 14:12:04,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-21 14:12:04,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2022-11-21 14:12:05,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 26 [2022-11-21 14:12:05,035 INFO L321 Elim1Store]: treesize reduction 17, result has 39.3 percent of original size [2022-11-21 14:12:05,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 23 [2022-11-21 14:12:05,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:12:05,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 14:12:05,103 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 29 [2022-11-21 14:12:05,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-21 14:12:05,150 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-21 14:12:05,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-21 14:12:24,294 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 32 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2022-11-21 14:12:24,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 14:12:25,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060519492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 14:12:25,740 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 14:12:25,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 35] total 60 [2022-11-21 14:12:25,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213396565] [2022-11-21 14:12:25,740 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 14:12:25,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-21 14:12:25,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:12:25,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-21 14:12:25,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=3852, Unknown=25, NotChecked=126, Total=4290 [2022-11-21 14:12:25,743 INFO L87 Difference]: Start difference. First operand 344 states and 375 transitions. Second operand has 60 states, 55 states have (on average 2.981818181818182) internal successors, (164), 50 states have internal predecessors, (164), 20 states have call successors, (26), 11 states have call predecessors, (26), 15 states have return successors, (26), 16 states have call predecessors, (26), 19 states have call successors, (26) [2022-11-21 14:12:57,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:00,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:02,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:04,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:07,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:18,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:28,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:40,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:42,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:44,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:46,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:48,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:13:58,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:00,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:02,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:15,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:17,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:19,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:21,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:22,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:24,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:26,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:28,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:30,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:32,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:34,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:36,871 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:38,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:40,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:42,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:14:59,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:01,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:03,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:05,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:26,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:28,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:30,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:56,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:15:58,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:00,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:02,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:05,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:07,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:27,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:29,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:31,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:33,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:35,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:37,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:39,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:41,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:56,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:16:58,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:17:00,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:17:06,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:17:08,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:17:15,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:17:17,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2022-11-21 14:17:25,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]