./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:48:33,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:48:33,683 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 11:48:33,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:48:33,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:48:33,715 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:48:33,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:48:33,716 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:48:33,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:48:33,718 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:48:33,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:48:33,719 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:48:33,720 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:48:33,721 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:48:33,721 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:48:33,722 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:48:33,723 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:48:33,724 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:48:33,724 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:48:33,725 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:48:33,725 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:48:33,726 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:48:33,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:48:33,727 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:48:33,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:48:33,729 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:48:33,729 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:48:33,730 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:48:33,730 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:33,731 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:48:33,732 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:48:33,732 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:48:33,733 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:48:33,733 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:48:33,734 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:48:33,734 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:48:33,735 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:48:33,735 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:48:33,736 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:48:33,737 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 60926facf5511174d61dcd6a0b7a731efc9ccdb495bc26b58400da4cd6320ca0 [2023-11-26 11:48:33,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:48:33,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:48:34,001 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:48:34,004 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:48:34,004 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:48:34,006 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2023-11-26 11:48:37,215 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:37,843 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:37,843 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i [2023-11-26 11:48:37,894 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/data/7a20f1155/f90fa729d83c4f10b16cee21396e8954/FLAGa0fd8d3ca [2023-11-26 11:48:37,913 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/data/7a20f1155/f90fa729d83c4f10b16cee21396e8954 [2023-11-26 11:48:37,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:37,918 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:37,919 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:37,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:37,926 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:37,929 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:37" (1/1) ... [2023-11-26 11:48:37,930 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411ee51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:37, skipping insertion in model container [2023-11-26 11:48:37,931 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:37" (1/1) ... [2023-11-26 11:48:38,061 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:38,336 WARN L240 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_279fca92-05db-401c-8d30-bad17d0791e1/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2023-11-26 11:48:38,345 WARN L240 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_279fca92-05db-401c-8d30-bad17d0791e1/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2023-11-26 11:48:39,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:39,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:39,524 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:39,525 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:39,527 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:39,543 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:39,543 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:39,546 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:39,547 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,012 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:48:40,013 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:48:40,015 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:48:40,016 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:48:40,018 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:48:40,019 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:48:40,020 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:48:40,021 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:48:40,021 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:48:40,022 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:48:40,348 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,348 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:40,474 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:40,503 WARN L240 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_279fca92-05db-401c-8d30-bad17d0791e1/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4505,4518] [2023-11-26 11:48:40,505 WARN L240 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_279fca92-05db-401c-8d30-bad17d0791e1/sv-benchmarks/c/aws-c-common/aws_byte_cursor_compare_lexical_harness.i[4565,4578] [2023-11-26 11:48:40,570 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,571 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,572 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,573 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,574 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,596 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,601 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,603 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,604 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,692 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 11:48:40,693 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 11:48:40,694 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 11:48:40,695 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 11:48:40,696 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 11:48:40,698 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 11:48:40,699 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 11:48:40,702 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 11:48:40,703 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 11:48:40,703 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 11:48:40,838 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-26 11:48:40,839 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 11:48:40,867 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-26 11:48:40,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:41,128 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,129 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,129 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,129 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,129 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,130 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,130 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,131 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,131 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,132 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,132 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,132 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,132 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,132 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,133 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,134 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,134 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,134 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 11:48:41,143 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:41,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41 WrapperNode [2023-11-26 11:48:41,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:41,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:41,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:41,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:41,155 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (1/1) ... [2023-11-26 11:48:41,316 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (1/1) ... [2023-11-26 11:48:41,427 INFO L138 Inliner]: procedures = 690, calls = 2659, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 921 [2023-11-26 11:48:41,430 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:41,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:41,431 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:41,431 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:41,444 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (1/1) ... [2023-11-26 11:48:41,444 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (1/1) ... [2023-11-26 11:48:41,453 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (1/1) ... [2023-11-26 11:48:41,529 INFO L175 MemorySlicer]: Split 554 memory accesses to 8 slices as follows [2, 5, 256, 236, 4, 42, 6, 3]. 46 percent of accesses are in the largest equivalence class. The 502 initializations are split as follows [2, 5, 256, 236, 0, 0, 0, 3]. The 5 writes are split as follows [0, 0, 0, 0, 0, 3, 2, 0]. [2023-11-26 11:48:41,529 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (1/1) ... [2023-11-26 11:48:41,530 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (1/1) ... [2023-11-26 11:48:41,570 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (1/1) ... [2023-11-26 11:48:41,573 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (1/1) ... [2023-11-26 11:48:41,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (1/1) ... [2023-11-26 11:48:41,589 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (1/1) ... [2023-11-26 11:48:41,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:41,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:41,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:41,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:41,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (1/1) ... [2023-11-26 11:48:41,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:41,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:41,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:41,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-26 11:48:41,691 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-26 11:48:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_compare_lexical [2023-11-26 11:48:41,692 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_compare_lexical [2023-11-26 11:48:41,692 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-26 11:48:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:48:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-26 11:48:41,693 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-26 11:48:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:48:41,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:48:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:48:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:48:41,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:48:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:48:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 11:48:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-26 11:48:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2023-11-26 11:48:41,695 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2023-11-26 11:48:41,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:48:41,696 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:48:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:48:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-26 11:48:41,696 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-26 11:48:41,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:48:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:48:41,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 11:48:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 11:48:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 11:48:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 11:48:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 11:48:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-26 11:48:41,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:41,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:41,699 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-26 11:48:41,699 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-26 11:48:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-26 11:48:41,700 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-26 11:48:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 11:48:41,700 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 11:48:41,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:48:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:48:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:48:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 11:48:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 11:48:41,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 11:48:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 11:48:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 11:48:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-26 11:48:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 11:48:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 11:48:41,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 11:48:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 11:48:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 11:48:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 11:48:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 11:48:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-26 11:48:41,703 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-26 11:48:41,703 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-26 11:48:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:48:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:48:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:48:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:48:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:48:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:48:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 11:48:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-26 11:48:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2023-11-26 11:48:41,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2023-11-26 11:48:41,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:48:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:48:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:48:41,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:48:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:48:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:48:41,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:48:41,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:48:42,128 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:48:42,131 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:48:43,351 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:48:43,541 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:48:43,541 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:48:43,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:43 BoogieIcfgContainer [2023-11-26 11:48:43,542 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:48:43,548 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:48:43,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:48:43,553 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:48:43,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:37" (1/3) ... [2023-11-26 11:48:43,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452f94d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:43, skipping insertion in model container [2023-11-26 11:48:43,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:41" (2/3) ... [2023-11-26 11:48:43,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@452f94d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:43, skipping insertion in model container [2023-11-26 11:48:43,560 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:43" (3/3) ... [2023-11-26 11:48:43,563 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_compare_lexical_harness.i [2023-11-26 11:48:43,586 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:48:43,586 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:48:43,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:43,683 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=LoopHeads, 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;@13a97c4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:43,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:48:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 79 states have internal predecessors, (98), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-26 11:48:43,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-26 11:48:43,715 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:43,716 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:43,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:43,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:43,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1419046533, now seen corresponding path program 1 times [2023-11-26 11:48:43,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:43,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594122272] [2023-11-26 11:48:43,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:48:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:48:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:48:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 11:48:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:48:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:48:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:48:44,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 11:48:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 11:48:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 11:48:44,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 11:48:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 11:48:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 11:48:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 11:48:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 11:48:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-26 11:48:44,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:44,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594122272] [2023-11-26 11:48:44,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594122272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:44,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:44,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:48:44,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620965921] [2023-11-26 11:48:44,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:44,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:48:44,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:44,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:48:44,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:48:44,880 INFO L87 Difference]: Start difference. First operand has 137 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 79 states have internal predecessors, (98), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 11:48:46,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:46,392 INFO L93 Difference]: Finished difference Result 274 states and 412 transitions. [2023-11-26 11:48:46,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:48:46,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 110 [2023-11-26 11:48:46,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:46,407 INFO L225 Difference]: With dead ends: 274 [2023-11-26 11:48:46,407 INFO L226 Difference]: Without dead ends: 137 [2023-11-26 11:48:46,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:48:46,417 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 118 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:46,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 148 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 11:48:46,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-26 11:48:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 134. [2023-11-26 11:48:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 76 states have (on average 1.2236842105263157) internal successors, (93), 77 states have internal predecessors, (93), 46 states have call successors, (46), 11 states have call predecessors, (46), 11 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-26 11:48:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 184 transitions. [2023-11-26 11:48:46,509 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 184 transitions. Word has length 110 [2023-11-26 11:48:46,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:46,510 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 184 transitions. [2023-11-26 11:48:46,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-26 11:48:46,511 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 184 transitions. [2023-11-26 11:48:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-26 11:48:46,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:46,515 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:46,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:48:46,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:46,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:46,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1636033603, now seen corresponding path program 1 times [2023-11-26 11:48:46,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:46,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704158792] [2023-11-26 11:48:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:46,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:46,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:48:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:48:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:48:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 11:48:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:48:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:48:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:48:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 11:48:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-26 11:48:47,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-26 11:48:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 11:48:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 11:48:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-26 11:48:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-26 11:48:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 11:48:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:47,746 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-11-26 11:48:47,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:47,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704158792] [2023-11-26 11:48:47,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704158792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:47,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262299676] [2023-11-26 11:48:47,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:47,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:47,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:47,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:47,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:48:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:48,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:48:48,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-26 11:48:48,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:48,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262299676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:48,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:48,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-26 11:48:48,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407324991] [2023-11-26 11:48:48,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:48,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:48:48,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:48,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:48:48,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:48:48,772 INFO L87 Difference]: Start difference. First operand 134 states and 184 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-26 11:48:49,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:49,747 INFO L93 Difference]: Finished difference Result 264 states and 367 transitions. [2023-11-26 11:48:49,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:48:49,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 110 [2023-11-26 11:48:49,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:49,755 INFO L225 Difference]: With dead ends: 264 [2023-11-26 11:48:49,755 INFO L226 Difference]: Without dead ends: 136 [2023-11-26 11:48:49,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:48:49,763 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 43 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:49,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 417 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:48:49,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-26 11:48:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-11-26 11:48:49,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 46 states have call successors, (46), 11 states have call predecessors, (46), 12 states have return successors, (51), 45 states have call predecessors, (51), 45 states have call successors, (51) [2023-11-26 11:48:49,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 191 transitions. [2023-11-26 11:48:49,804 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 191 transitions. Word has length 110 [2023-11-26 11:48:49,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:49,804 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 191 transitions. [2023-11-26 11:48:49,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-26 11:48:49,805 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 191 transitions. [2023-11-26 11:48:49,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-26 11:48:49,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:49,814 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 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] [2023-11-26 11:48:49,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:48:50,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 11:48:50,015 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:50,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:50,016 INFO L85 PathProgramCache]: Analyzing trace with hash 654718632, now seen corresponding path program 1 times [2023-11-26 11:48:50,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:50,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585648762] [2023-11-26 11:48:50,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:50,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:50,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:50,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:48:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:50,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:50,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:50,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:48:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:50,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:48:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:50,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:50,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:48:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:48:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:48:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-26 11:48:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 11:48:51,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-26 11:48:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-26 11:48:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-26 11:48:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:48:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-26 11:48:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-26 11:48:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-11-26 11:48:51,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:51,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585648762] [2023-11-26 11:48:51,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585648762] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:51,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128987536] [2023-11-26 11:48:51,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:51,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:51,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:51,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:51,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:48:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:51,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:48:51,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-26 11:48:52,097 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:52,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128987536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:52,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:52,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-26 11:48:52,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400310000] [2023-11-26 11:48:52,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:52,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:48:52,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:52,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:48:52,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:48:52,103 INFO L87 Difference]: Start difference. First operand 136 states and 191 transitions. Second operand has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-26 11:48:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:53,678 INFO L93 Difference]: Finished difference Result 224 states and 317 transitions. [2023-11-26 11:48:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:48:53,679 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 112 [2023-11-26 11:48:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:53,681 INFO L225 Difference]: With dead ends: 224 [2023-11-26 11:48:53,682 INFO L226 Difference]: Without dead ends: 136 [2023-11-26 11:48:53,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:48:53,684 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 68 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:53,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 800 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 11:48:53,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-26 11:48:53,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2023-11-26 11:48:53,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 79 states have internal predecessors, (94), 46 states have call successors, (46), 11 states have call predecessors, (46), 12 states have return successors, (49), 45 states have call predecessors, (49), 45 states have call successors, (49) [2023-11-26 11:48:53,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 189 transitions. [2023-11-26 11:48:53,708 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 189 transitions. Word has length 112 [2023-11-26 11:48:53,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:53,708 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 189 transitions. [2023-11-26 11:48:53,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-26 11:48:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 189 transitions. [2023-11-26 11:48:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-26 11:48:53,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:53,711 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 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] [2023-11-26 11:48:53,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 11:48:53,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:53,922 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:53,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:53,923 INFO L85 PathProgramCache]: Analyzing trace with hash 92036872, now seen corresponding path program 2 times [2023-11-26 11:48:53,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:53,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900689351] [2023-11-26 11:48:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:53,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:48:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:54,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:48:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:48:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:48:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:48:54,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:48:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 11:48:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 11:48:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 11:48:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 11:48:54,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 11:48:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-26 11:48:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 11:48:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-26 11:48:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:54,976 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-26 11:48:54,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:54,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900689351] [2023-11-26 11:48:54,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900689351] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:54,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664331252] [2023-11-26 11:48:54,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:48:54,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:54,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:54,978 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:55,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:48:55,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:48:55,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:48:55,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 2300 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-26 11:48:55,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:55,691 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-11-26 11:48:55,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:55,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664331252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:55,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:55,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-26 11:48:55,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825094279] [2023-11-26 11:48:55,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:55,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:48:55,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:55,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:48:55,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:48:55,695 INFO L87 Difference]: Start difference. First operand 136 states and 189 transitions. Second operand has 8 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:48:57,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:48:57,391 INFO L93 Difference]: Finished difference Result 147 states and 207 transitions. [2023-11-26 11:48:57,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:48:57,392 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 116 [2023-11-26 11:48:57,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:48:57,395 INFO L225 Difference]: With dead ends: 147 [2023-11-26 11:48:57,395 INFO L226 Difference]: Without dead ends: 145 [2023-11-26 11:48:57,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:48:57,397 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 17 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1198 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:48:57,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1198 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-26 11:48:57,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-26 11:48:57,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2023-11-26 11:48:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 82 states have (on average 1.2073170731707317) internal successors, (99), 85 states have internal predecessors, (99), 47 states have call successors, (47), 12 states have call predecessors, (47), 14 states have return successors, (58), 46 states have call predecessors, (58), 46 states have call successors, (58) [2023-11-26 11:48:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 204 transitions. [2023-11-26 11:48:57,437 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 204 transitions. Word has length 116 [2023-11-26 11:48:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:48:57,439 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 204 transitions. [2023-11-26 11:48:57,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-26 11:48:57,439 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 204 transitions. [2023-11-26 11:48:57,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-26 11:48:57,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:57,441 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:48:57,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 11:48:57,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:57,652 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:57,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:57,652 INFO L85 PathProgramCache]: Analyzing trace with hash 812288832, now seen corresponding path program 1 times [2023-11-26 11:48:57,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:57,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372509038] [2023-11-26 11:48:57,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:57,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:48:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:48:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:48:58,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:48:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:48:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:48:58,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:48:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:48:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:48:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:48:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 11:48:58,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 11:48:58,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-26 11:48:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-26 11:48:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-26 11:48:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-26 11:48:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-26 11:48:58,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-26 11:48:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-26 11:48:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372509038] [2023-11-26 11:48:58,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372509038] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:48:58,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290725885] [2023-11-26 11:48:58,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:58,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:48:58,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:58,690 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:48:58,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:48:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:59,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:48:59,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:48:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-26 11:48:59,542 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:48:59,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290725885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:59,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:48:59,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-11-26 11:48:59,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023157424] [2023-11-26 11:48:59,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:48:59,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:48:59,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:48:59,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:48:59,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:48:59,546 INFO L87 Difference]: Start difference. First operand 144 states and 204 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-26 11:49:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:00,866 INFO L93 Difference]: Finished difference Result 283 states and 410 transitions. [2023-11-26 11:49:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:49:00,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 120 [2023-11-26 11:49:00,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:00,874 INFO L225 Difference]: With dead ends: 283 [2023-11-26 11:49:00,874 INFO L226 Difference]: Without dead ends: 171 [2023-11-26 11:49:00,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:49:00,877 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 67 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:00,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 871 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 11:49:00,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-26 11:49:00,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-11-26 11:49:00,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 98 states have internal predecessors, (115), 60 states have call successors, (60), 13 states have call predecessors, (60), 15 states have return successors, (73), 59 states have call predecessors, (73), 59 states have call successors, (73) [2023-11-26 11:49:00,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 248 transitions. [2023-11-26 11:49:00,935 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 248 transitions. Word has length 120 [2023-11-26 11:49:00,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:00,938 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 248 transitions. [2023-11-26 11:49:00,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 4 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-26 11:49:00,939 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 248 transitions. [2023-11-26 11:49:00,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-26 11:49:00,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:00,944 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 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, 1] [2023-11-26 11:49:00,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:49:01,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:01,158 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:01,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:01,159 INFO L85 PathProgramCache]: Analyzing trace with hash -192731525, now seen corresponding path program 1 times [2023-11-26 11:49:01,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:01,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683861407] [2023-11-26 11:49:01,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:01,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:05,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:05,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 11:49:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:05,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:49:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:49:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:05,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:49:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:05,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:49:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:05,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:49:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:05,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:49:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:05,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:49:05,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:49:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-26 11:49:06,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-26 11:49:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-26 11:49:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-26 11:49:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 11:49:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-26 11:49:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-26 11:49:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 11:49:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-26 11:49:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-11-26 11:49:06,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:06,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683861407] [2023-11-26 11:49:06,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683861407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:06,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903512839] [2023-11-26 11:49:06,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:06,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:06,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:06,270 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:06,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:49:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 2719 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-26 11:49:06,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:07,089 INFO L378 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 [2023-11-26 11:49:07,095 INFO L378 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 [2023-11-26 11:49:07,668 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 99 proven. 4 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-26 11:49:07,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:08,181 INFO L378 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 30 treesize of output 24 [2023-11-26 11:49:08,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:08,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:49:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-26 11:49:08,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903512839] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:08,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:49:08,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 12] total 30 [2023-11-26 11:49:08,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340469034] [2023-11-26 11:49:08,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:08,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-26 11:49:08,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:08,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-26 11:49:08,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=802, Unknown=0, NotChecked=0, Total=870 [2023-11-26 11:49:08,229 INFO L87 Difference]: Start difference. First operand 171 states and 248 transitions. Second operand has 30 states, 25 states have (on average 3.92) internal successors, (98), 23 states have internal predecessors, (98), 14 states have call successors, (56), 7 states have call predecessors, (56), 7 states have return successors, (54), 11 states have call predecessors, (54), 13 states have call successors, (54) [2023-11-26 11:49:18,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:18,459 INFO L93 Difference]: Finished difference Result 486 states and 726 transitions. [2023-11-26 11:49:18,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-26 11:49:18,460 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 25 states have (on average 3.92) internal successors, (98), 23 states have internal predecessors, (98), 14 states have call successors, (56), 7 states have call predecessors, (56), 7 states have return successors, (54), 11 states have call predecessors, (54), 13 states have call successors, (54) Word has length 122 [2023-11-26 11:49:18,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:18,465 INFO L225 Difference]: With dead ends: 486 [2023-11-26 11:49:18,465 INFO L226 Difference]: Without dead ends: 299 [2023-11-26 11:49:18,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 268 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=272, Invalid=2808, Unknown=0, NotChecked=0, Total=3080 [2023-11-26 11:49:18,469 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 409 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 3296 mSolverCounterSat, 388 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 3693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 3296 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:18,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 876 Invalid, 3693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 3296 Invalid, 9 Unknown, 0 Unchecked, 8.2s Time] [2023-11-26 11:49:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-26 11:49:18,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2023-11-26 11:49:18,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 135 states have (on average 1.2) internal successors, (162), 141 states have internal predecessors, (162), 95 states have call successors, (95), 15 states have call predecessors, (95), 19 states have return successors, (123), 93 states have call predecessors, (123), 94 states have call successors, (123) [2023-11-26 11:49:18,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 380 transitions. [2023-11-26 11:49:18,529 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 380 transitions. Word has length 122 [2023-11-26 11:49:18,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:18,529 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 380 transitions. [2023-11-26 11:49:18,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 25 states have (on average 3.92) internal successors, (98), 23 states have internal predecessors, (98), 14 states have call successors, (56), 7 states have call predecessors, (56), 7 states have return successors, (54), 11 states have call predecessors, (54), 13 states have call successors, (54) [2023-11-26 11:49:18,530 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 380 transitions. [2023-11-26 11:49:18,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-26 11:49:18,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:18,533 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:18,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-26 11:49:18,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279fca92-05db-401c-8d30-bad17d0791e1/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:18,743 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:18,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:18,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2141971610, now seen corresponding path program 1 times [2023-11-26 11:49:18,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:18,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737477878] [2023-11-26 11:49:18,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:18,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat