./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya --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 bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:56:44,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:56:44,414 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 06:56:44,420 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:56:44,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:56:44,448 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:56:44,449 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:56:44,449 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:56:44,450 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:56:44,451 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:56:44,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:56:44,452 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:56:44,452 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:56:44,453 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:56:44,453 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:56:44,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:56:44,454 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:56:44,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:56:44,455 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:56:44,456 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:56:44,456 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:56:44,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:56:44,457 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:56:44,457 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:56:44,458 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:56:44,458 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:56:44,458 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:56:44,459 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:56:44,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:56:44,459 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:56:44,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:56:44,460 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:56:44,460 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:56:44,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:56:44,461 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:56:44,461 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:56:44,461 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:56:44,461 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:56:44,461 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:56:44,462 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_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c [2023-11-29 06:56:44,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:56:44,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:56:44,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:56:44,755 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:56:44,756 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:56:44,757 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2023-11-29 06:56:47,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:56:47,889 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:56:47,890 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i [2023-11-29 06:56:47,922 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/data/09048e640/c9c1590731f742ba80c8afd576de20da/FLAGec45b3934 [2023-11-29 06:56:47,936 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/data/09048e640/c9c1590731f742ba80c8afd576de20da [2023-11-29 06:56:47,939 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:56:47,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:56:47,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:56:47,942 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:56:47,947 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:56:47,948 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:56:47" (1/1) ... [2023-11-29 06:56:47,949 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed84633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:47, skipping insertion in model container [2023-11-29 06:56:47,949 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:56:47" (1/1) ... [2023-11-29 06:56:48,062 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:56:48,308 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_47f047cc-aae4-4c58-85eb-06747cb0e1a3/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2023-11-29 06:56:48,317 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_47f047cc-aae4-4c58-85eb-06747cb0e1a3/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2023-11-29 06:56:49,145 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:49,146 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:49,147 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:49,148 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:49,149 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:49,160 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:49,161 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:49,162 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:49,162 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:49,615 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 06:56:49,617 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 06:56:49,618 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 06:56:49,619 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 06:56:49,621 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 06:56:49,622 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 06:56:49,622 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 06:56:49,623 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 06:56:49,624 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 06:56:49,625 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 06:56:49,921 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:49,922 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:49,998 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:56:50,061 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:56:50,077 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_47f047cc-aae4-4c58-85eb-06747cb0e1a3/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4497,4510] [2023-11-29 06:56:50,078 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_47f047cc-aae4-4c58-85eb-06747cb0e1a3/sv-benchmarks/c/aws-c-common/aws_byte_buf_from_array_harness.i[4557,4570] [2023-11-29 06:56:50,163 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:50,164 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:50,164 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:50,165 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:50,165 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:50,171 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:50,171 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:50,172 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:50,172 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:50,206 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 06:56:50,207 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 06:56:50,208 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 06:56:50,209 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 06:56:50,210 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 06:56:50,210 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 06:56:50,211 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 06:56:50,211 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 06:56:50,212 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 06:56:50,212 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 06:56:50,289 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-29 06:56:50,291 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:50,292 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 06:56:50,305 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2023-11-29 06:56:50,318 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:56:50,561 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,562 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,562 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,562 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,562 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,562 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,562 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,562 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,562 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,563 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,563 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,563 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,563 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,563 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,563 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,563 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,563 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,564 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 06:56:50,570 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:56:50,570 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50 WrapperNode [2023-11-29 06:56:50,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:56:50,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:56:50,571 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:56:50,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:56:50,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (1/1) ... [2023-11-29 06:56:50,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (1/1) ... [2023-11-29 06:56:50,728 INFO L138 Inliner]: procedures = 689, calls = 2618, calls flagged for inlining = 57, calls inlined = 4, statements flattened = 765 [2023-11-29 06:56:50,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:56:50,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:56:50,729 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:56:50,729 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:56:50,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (1/1) ... [2023-11-29 06:56:50,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (1/1) ... [2023-11-29 06:56:50,748 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (1/1) ... [2023-11-29 06:56:50,807 INFO L175 MemorySlicer]: Split 530 memory accesses to 6 slices as follows [2, 5, 256, 238, 26, 3]. 48 percent of accesses are in the largest equivalence class. The 506 initializations are split as follows [2, 5, 256, 236, 4, 3]. The 4 writes are split as follows [0, 0, 0, 0, 4, 0]. [2023-11-29 06:56:50,807 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (1/1) ... [2023-11-29 06:56:50,807 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (1/1) ... [2023-11-29 06:56:50,872 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (1/1) ... [2023-11-29 06:56:50,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (1/1) ... [2023-11-29 06:56:50,884 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (1/1) ... [2023-11-29 06:56:50,890 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (1/1) ... [2023-11-29 06:56:50,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:56:50,903 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:56:50,903 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:56:50,903 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:56:50,904 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (1/1) ... [2023-11-29 06:56:50,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:56:50,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:56:50,934 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:56:50,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:56:50,968 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-29 06:56:50,969 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-29 06:56:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 06:56:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:56:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:56:50,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 06:56:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 06:56:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 06:56:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 06:56:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 06:56:50,970 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 06:56:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 06:56:50,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:56:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 06:56:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 06:56:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 06:56:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 06:56:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 06:56:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 06:56:50,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:56:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:56:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-29 06:56:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-29 06:56:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 06:56:50,972 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 06:56:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 06:56:50,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 06:56:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 06:56:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 06:56:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 06:56:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 06:56:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 06:56:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 06:56:50,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 06:56:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 06:56:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 06:56:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 06:56:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 06:56:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-29 06:56:50,974 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-29 06:56:50,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:56:50,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:56:50,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 06:56:50,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 06:56:50,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 06:56:50,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 06:56:50,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:56:50,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:56:50,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 06:56:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 06:56:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 06:56:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 06:56:50,976 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_array [2023-11-29 06:56:50,976 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_array [2023-11-29 06:56:51,227 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:56:51,229 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:56:52,274 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:56:52,388 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:56:52,388 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 06:56:52,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:56:52 BoogieIcfgContainer [2023-11-29 06:56:52,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:56:52,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:56:52,391 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:56:52,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:56:52,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:56:47" (1/3) ... [2023-11-29 06:56:52,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad3e567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:56:52, skipping insertion in model container [2023-11-29 06:56:52,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:56:50" (2/3) ... [2023-11-29 06:56:52,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad3e567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:56:52, skipping insertion in model container [2023-11-29 06:56:52,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:56:52" (3/3) ... [2023-11-29 06:56:52,395 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_array_harness.i [2023-11-29 06:56:52,410 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:56:52,410 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:56:52,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:56:52,457 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;@61ec83b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:56:52,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:56:52,462 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 43 states have internal predecessors, (54), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 06:56:52,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 06:56:52,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:52,470 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:56:52,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:52,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:52,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1584327176, now seen corresponding path program 1 times [2023-11-29 06:56:52,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:52,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921256472] [2023-11-29 06:56:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:52,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:52,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:56:52,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:52,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:56:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:52,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:56:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:52,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:56:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:56:53,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:56:53,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921256472] [2023-11-29 06:56:53,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921256472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:56:53,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:56:53,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 06:56:53,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600864966] [2023-11-29 06:56:53,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:56:53,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 06:56:53,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:56:53,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 06:56:53,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:56:53,060 INFO L87 Difference]: Start difference. First operand has 65 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 43 states have internal predecessors, (54), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:56:53,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:56:53,283 INFO L93 Difference]: Finished difference Result 126 states and 174 transitions. [2023-11-29 06:56:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 06:56:53,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-11-29 06:56:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:56:53,294 INFO L225 Difference]: With dead ends: 126 [2023-11-29 06:56:53,294 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 06:56:53,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 06:56:53,302 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 33 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:56:53,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 59 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:56:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 06:56:53,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-29 06:56:53,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-29 06:56:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2023-11-29 06:56:53,342 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 28 [2023-11-29 06:56:53,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:56:53,342 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2023-11-29 06:56:53,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:56:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2023-11-29 06:56:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 06:56:53,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:53,344 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:56:53,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:56:53,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:53,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:53,346 INFO L85 PathProgramCache]: Analyzing trace with hash -807917172, now seen corresponding path program 1 times [2023-11-29 06:56:53,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:53,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983598628] [2023-11-29 06:56:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:53,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:53,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:53,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:56:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:56:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:56:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:53,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:56:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:56:53,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:56:53,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983598628] [2023-11-29 06:56:53,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983598628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:56:53,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:56:53,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:56:53,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492901914] [2023-11-29 06:56:53,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:56:53,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:56:53,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:56:53,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:56:53,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:56:53,966 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:56:54,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:56:54,298 INFO L93 Difference]: Finished difference Result 112 states and 140 transitions. [2023-11-29 06:56:54,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:56:54,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-11-29 06:56:54,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:56:54,304 INFO L225 Difference]: With dead ends: 112 [2023-11-29 06:56:54,304 INFO L226 Difference]: Without dead ends: 63 [2023-11-29 06:56:54,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-29 06:56:54,306 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 52 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:56:54,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 105 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:56:54,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-29 06:56:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-29 06:56:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.2) internal successors, (48), 42 states have internal predecessors, (48), 15 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-11-29 06:56:54,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2023-11-29 06:56:54,327 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 28 [2023-11-29 06:56:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:56:54,329 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2023-11-29 06:56:54,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:56:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2023-11-29 06:56:54,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-29 06:56:54,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:54,331 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:56:54,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:56:54,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:54,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:54,332 INFO L85 PathProgramCache]: Analyzing trace with hash -68453791, now seen corresponding path program 1 times [2023-11-29 06:56:54,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:54,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457832614] [2023-11-29 06:56:54,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:54,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:55,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:56:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:55,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:56:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:56:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:55,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:56:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:55,339 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:56:55,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:56:55,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457832614] [2023-11-29 06:56:55,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457832614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:56:55,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:56:55,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 06:56:55,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726795049] [2023-11-29 06:56:55,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:56:55,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:56:55,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:56:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:56:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:56:55,342 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 9 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:56:55,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:56:55,759 INFO L93 Difference]: Finished difference Result 74 states and 90 transitions. [2023-11-29 06:56:55,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:56:55,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2023-11-29 06:56:55,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:56:55,762 INFO L225 Difference]: With dead ends: 74 [2023-11-29 06:56:55,762 INFO L226 Difference]: Without dead ends: 72 [2023-11-29 06:56:55,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:56:55,764 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 60 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:56:55,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 217 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:56:55,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-29 06:56:55,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2023-11-29 06:56:55,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 48 states have internal predecessors, (53), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-29 06:56:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2023-11-29 06:56:55,777 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 34 [2023-11-29 06:56:55,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:56:55,777 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2023-11-29 06:56:55,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:56:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2023-11-29 06:56:55,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 06:56:55,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:55,779 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:56:55,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 06:56:55,780 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:55,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:55,780 INFO L85 PathProgramCache]: Analyzing trace with hash -836820197, now seen corresponding path program 1 times [2023-11-29 06:56:55,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:55,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711044004] [2023-11-29 06:56:55,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:55,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:58,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:56:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:56:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:58,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:56:58,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:58,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:56:58,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:56:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:56:58,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:56:58,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711044004] [2023-11-29 06:56:58,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711044004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:56:58,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:56:58,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 06:56:58,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574084699] [2023-11-29 06:56:58,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:56:58,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:56:58,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:56:58,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:56:58,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:56:58,882 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:56:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:56:59,557 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2023-11-29 06:56:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:56:59,557 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-11-29 06:56:59,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:56:59,559 INFO L225 Difference]: With dead ends: 139 [2023-11-29 06:56:59,559 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 06:56:59,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:56:59,561 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 122 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:56:59,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 138 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:56:59,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 06:56:59,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2023-11-29 06:56:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 57 states have internal predecessors, (66), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-29 06:56:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2023-11-29 06:56:59,577 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 38 [2023-11-29 06:56:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:56:59,578 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2023-11-29 06:56:59,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:56:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2023-11-29 06:56:59,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 06:56:59,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:56:59,580 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:56:59,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 06:56:59,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:56:59,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:56:59,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1847937447, now seen corresponding path program 1 times [2023-11-29 06:56:59,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:56:59,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338908930] [2023-11-29 06:56:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:56:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:56:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:01,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:01,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:01,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:57:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:01,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:57:01,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:02,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:57:02,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:02,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338908930] [2023-11-29 06:57:02,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338908930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:02,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:02,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 06:57:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474058077] [2023-11-29 06:57:02,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:02,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:57:02,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:02,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:57:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:57:02,043 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:57:02,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:02,865 INFO L93 Difference]: Finished difference Result 177 states and 224 transitions. [2023-11-29 06:57:02,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:57:02,866 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-11-29 06:57:02,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:02,868 INFO L225 Difference]: With dead ends: 177 [2023-11-29 06:57:02,868 INFO L226 Difference]: Without dead ends: 109 [2023-11-29 06:57:02,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:57:02,870 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 143 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:02,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 142 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 06:57:02,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-29 06:57:02,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 84. [2023-11-29 06:57:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 61 states have internal predecessors, (72), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-29 06:57:02,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2023-11-29 06:57:02,885 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 38 [2023-11-29 06:57:02,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:02,886 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2023-11-29 06:57:02,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:57:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2023-11-29 06:57:02,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 06:57:02,888 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:02,888 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:57:02,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 06:57:02,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:02,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:02,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1425961495, now seen corresponding path program 1 times [2023-11-29 06:57:02,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:02,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137473737] [2023-11-29 06:57:02,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:02,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:03,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:03,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:03,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:03,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:03,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:57:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:57:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:57:03,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:03,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137473737] [2023-11-29 06:57:03,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137473737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:03,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:03,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 06:57:03,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232436658] [2023-11-29 06:57:03,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:03,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 06:57:03,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:03,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 06:57:03,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:57:03,570 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:57:03,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:03,904 INFO L93 Difference]: Finished difference Result 165 states and 213 transitions. [2023-11-29 06:57:03,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:57:03,905 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2023-11-29 06:57:03,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:03,906 INFO L225 Difference]: With dead ends: 165 [2023-11-29 06:57:03,907 INFO L226 Difference]: Without dead ends: 98 [2023-11-29 06:57:03,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:57:03,909 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 59 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:03,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 106 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:57:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-29 06:57:03,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 87. [2023-11-29 06:57:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 64 states have internal predecessors, (75), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-29 06:57:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2023-11-29 06:57:03,922 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 38 [2023-11-29 06:57:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:03,922 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2023-11-29 06:57:03,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:57:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2023-11-29 06:57:03,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-29 06:57:03,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:03,924 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:57:03,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:57:03,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:03,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:03,925 INFO L85 PathProgramCache]: Analyzing trace with hash 724896917, now seen corresponding path program 1 times [2023-11-29 06:57:03,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:03,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604194915] [2023-11-29 06:57:03,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:03,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:05,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:05,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:05,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:57:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:05,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:57:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:57:06,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:06,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604194915] [2023-11-29 06:57:06,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604194915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:06,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993466390] [2023-11-29 06:57:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:06,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:06,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:06,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:06,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:57:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:06,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 2411 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 06:57:06,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:06,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2023-11-29 06:57:07,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:57:07,448 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:57:07,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993466390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:07,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:57:07,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 22 [2023-11-29 06:57:07,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276126981] [2023-11-29 06:57:07,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:07,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 06:57:07,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 06:57:07,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2023-11-29 06:57:07,451 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:57:11,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:57:12,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:12,594 INFO L93 Difference]: Finished difference Result 176 states and 218 transitions. [2023-11-29 06:57:12,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:57:12,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-11-29 06:57:12,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:12,596 INFO L225 Difference]: With dead ends: 176 [2023-11-29 06:57:12,596 INFO L226 Difference]: Without dead ends: 106 [2023-11-29 06:57:12,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2023-11-29 06:57:12,598 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 67 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:12,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 261 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 06:57:12,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-29 06:57:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 91. [2023-11-29 06:57:12,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 64 states have (on average 1.21875) internal successors, (78), 67 states have internal predecessors, (78), 16 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-29 06:57:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 112 transitions. [2023-11-29 06:57:12,612 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 112 transitions. Word has length 38 [2023-11-29 06:57:12,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:12,613 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 112 transitions. [2023-11-29 06:57:12,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 06:57:12,614 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 112 transitions. [2023-11-29 06:57:12,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 06:57:12,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:12,615 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:57:12,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:57:12,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 06:57:12,820 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:12,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:12,820 INFO L85 PathProgramCache]: Analyzing trace with hash 2116503984, now seen corresponding path program 1 times [2023-11-29 06:57:12,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:12,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000635764] [2023-11-29 06:57:12,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:12,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:13,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:13,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:13,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:13,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:57:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:13,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:57:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:57:13,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:13,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000635764] [2023-11-29 06:57:13,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000635764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:13,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:13,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 06:57:13,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058125538] [2023-11-29 06:57:13,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:13,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:57:13,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:13,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:57:13,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:57:13,576 INFO L87 Difference]: Start difference. First operand 91 states and 112 transitions. Second operand has 11 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:57:14,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:14,029 INFO L93 Difference]: Finished difference Result 111 states and 133 transitions. [2023-11-29 06:57:14,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:57:14,029 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2023-11-29 06:57:14,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:14,031 INFO L225 Difference]: With dead ends: 111 [2023-11-29 06:57:14,031 INFO L226 Difference]: Without dead ends: 109 [2023-11-29 06:57:14,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:57:14,032 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 69 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:14,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 275 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:57:14,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-29 06:57:14,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2023-11-29 06:57:14,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 69 states have internal predecessors, (80), 16 states have call successors, (16), 8 states have call predecessors, (16), 10 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-29 06:57:14,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 114 transitions. [2023-11-29 06:57:14,044 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 114 transitions. Word has length 40 [2023-11-29 06:57:14,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:14,044 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 114 transitions. [2023-11-29 06:57:14,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 06:57:14,045 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 114 transitions. [2023-11-29 06:57:14,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 06:57:14,046 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:14,046 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-29 06:57:14,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 06:57:14,046 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:14,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:14,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1723476974, now seen corresponding path program 1 times [2023-11-29 06:57:14,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:14,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96163234] [2023-11-29 06:57:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:14,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:16,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:16,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:16,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-29 06:57:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:16,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-29 06:57:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:57:16,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:16,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96163234] [2023-11-29 06:57:16,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96163234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:16,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:16,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-29 06:57:16,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71529735] [2023-11-29 06:57:16,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:16,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 06:57:16,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:16,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 06:57:16,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=306, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:57:16,662 INFO L87 Difference]: Start difference. First operand 93 states and 114 transitions. Second operand has 19 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 06:57:17,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:17,826 INFO L93 Difference]: Finished difference Result 107 states and 127 transitions. [2023-11-29 06:57:17,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 06:57:17,827 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 40 [2023-11-29 06:57:17,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:17,828 INFO L225 Difference]: With dead ends: 107 [2023-11-29 06:57:17,828 INFO L226 Difference]: Without dead ends: 105 [2023-11-29 06:57:17,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 06:57:17,829 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 98 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:17,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 350 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 06:57:17,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-29 06:57:17,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2023-11-29 06:57:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 62 states have (on average 1.2258064516129032) internal successors, (76), 64 states have internal predecessors, (76), 15 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-11-29 06:57:17,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 106 transitions. [2023-11-29 06:57:17,839 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 106 transitions. Word has length 40 [2023-11-29 06:57:17,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:17,839 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 106 transitions. [2023-11-29 06:57:17,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-29 06:57:17,840 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 106 transitions. [2023-11-29 06:57:17,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-29 06:57:17,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:17,840 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:17,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 06:57:17,841 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:17,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:17,841 INFO L85 PathProgramCache]: Analyzing trace with hash 52138954, now seen corresponding path program 1 times [2023-11-29 06:57:17,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:17,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394363595] [2023-11-29 06:57:17,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:17,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:57:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:57:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:57:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 06:57:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:57:18,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:18,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394363595] [2023-11-29 06:57:18,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394363595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:18,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:18,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 06:57:18,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782502987] [2023-11-29 06:57:18,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:18,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:57:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:57:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:57:18,165 INFO L87 Difference]: Start difference. First operand 87 states and 106 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 06:57:18,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:18,385 INFO L93 Difference]: Finished difference Result 117 states and 140 transitions. [2023-11-29 06:57:18,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 06:57:18,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-11-29 06:57:18,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:18,387 INFO L225 Difference]: With dead ends: 117 [2023-11-29 06:57:18,388 INFO L226 Difference]: Without dead ends: 87 [2023-11-29 06:57:18,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-29 06:57:18,388 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 94 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:18,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 71 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:57:18,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-29 06:57:18,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-29 06:57:18,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 62 states have (on average 1.2096774193548387) internal successors, (75), 64 states have internal predecessors, (75), 15 states have call successors, (15), 8 states have call predecessors, (15), 9 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-11-29 06:57:18,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2023-11-29 06:57:18,398 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 47 [2023-11-29 06:57:18,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:18,398 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2023-11-29 06:57:18,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 06:57:18,399 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2023-11-29 06:57:18,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-29 06:57:18,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:18,400 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:18,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 06:57:18,400 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:18,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:18,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1279065631, now seen corresponding path program 1 times [2023-11-29 06:57:18,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:18,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012629930] [2023-11-29 06:57:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:18,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:18,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:57:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:57:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:57:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 06:57:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:57:18,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:18,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012629930] [2023-11-29 06:57:18,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012629930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:18,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:18,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 06:57:18,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794910679] [2023-11-29 06:57:18,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:18,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:57:18,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:18,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:57:18,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:57:18,895 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 10 states, 8 states have (on average 3.625) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-29 06:57:19,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:19,270 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2023-11-29 06:57:19,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:57:19,271 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 53 [2023-11-29 06:57:19,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:19,272 INFO L225 Difference]: With dead ends: 101 [2023-11-29 06:57:19,272 INFO L226 Difference]: Without dead ends: 99 [2023-11-29 06:57:19,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:57:19,273 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 57 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:19,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 206 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:57:19,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-29 06:57:19,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2023-11-29 06:57:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 73 states have internal predecessors, (82), 16 states have call successors, (16), 9 states have call predecessors, (16), 12 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2023-11-29 06:57:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 117 transitions. [2023-11-29 06:57:19,283 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 117 transitions. Word has length 53 [2023-11-29 06:57:19,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:19,283 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 117 transitions. [2023-11-29 06:57:19,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-29 06:57:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 117 transitions. [2023-11-29 06:57:19,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 06:57:19,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:19,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:19,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 06:57:19,285 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:19,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:19,285 INFO L85 PathProgramCache]: Analyzing trace with hash -306964519, now seen corresponding path program 1 times [2023-11-29 06:57:19,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:19,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013301805] [2023-11-29 06:57:19,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:19,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:20,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:20,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:20,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:57:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:21,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:57:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:21,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:57:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:21,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 06:57:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:21,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:57:21,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:21,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013301805] [2023-11-29 06:57:21,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013301805] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:21,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861730258] [2023-11-29 06:57:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:21,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:21,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:21,614 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:21,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:57:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:22,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 06:57:22,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:57:23,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:24,155 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 06:57:24,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2023-11-29 06:57:24,167 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-29 06:57:24,167 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 06:57:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:57:24,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861730258] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:24,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:57:24,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 14] total 39 [2023-11-29 06:57:24,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571884783] [2023-11-29 06:57:24,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:24,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 06:57:24,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:24,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 06:57:24,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 06:57:24,190 INFO L87 Difference]: Start difference. First operand 98 states and 117 transitions. Second operand has 39 states, 31 states have (on average 2.806451612903226) internal successors, (87), 32 states have internal predecessors, (87), 9 states have call successors, (16), 5 states have call predecessors, (16), 10 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-29 06:57:27,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:27,655 INFO L93 Difference]: Finished difference Result 227 states and 273 transitions. [2023-11-29 06:57:27,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-29 06:57:27,655 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 31 states have (on average 2.806451612903226) internal successors, (87), 32 states have internal predecessors, (87), 9 states have call successors, (16), 5 states have call predecessors, (16), 10 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) Word has length 57 [2023-11-29 06:57:27,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:27,657 INFO L225 Difference]: With dead ends: 227 [2023-11-29 06:57:27,657 INFO L226 Difference]: Without dead ends: 189 [2023-11-29 06:57:27,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 103 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=589, Invalid=3317, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 06:57:27,659 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 366 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 66 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 1808 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:27,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 257 Invalid, 1808 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1739 Invalid, 3 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 06:57:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-29 06:57:27,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 133. [2023-11-29 06:57:27,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 103 states have internal predecessors, (119), 18 states have call successors, (18), 11 states have call predecessors, (18), 16 states have return successors, (23), 18 states have call predecessors, (23), 17 states have call successors, (23) [2023-11-29 06:57:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 160 transitions. [2023-11-29 06:57:27,673 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 160 transitions. Word has length 57 [2023-11-29 06:57:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:27,673 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 160 transitions. [2023-11-29 06:57:27,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 31 states have (on average 2.806451612903226) internal successors, (87), 32 states have internal predecessors, (87), 9 states have call successors, (16), 5 states have call predecessors, (16), 10 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-29 06:57:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 160 transitions. [2023-11-29 06:57:27,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 06:57:27,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:27,674 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:27,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:57:27,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 06:57:27,875 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:27,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:27,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1318081769, now seen corresponding path program 1 times [2023-11-29 06:57:27,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:27,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904625746] [2023-11-29 06:57:27,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:27,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:27,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:28,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:28,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:28,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:57:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:28,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:28,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:57:28,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:28,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:57:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:28,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 06:57:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:29,251 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:57:29,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:29,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904625746] [2023-11-29 06:57:29,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904625746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:29,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146396133] [2023-11-29 06:57:29,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:29,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:29,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:29,253 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:29,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:57:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:29,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-29 06:57:29,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:29,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2023-11-29 06:57:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:57:30,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:31,210 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 3164 treesize of output 3068 [2023-11-29 06:57:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:57:31,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146396133] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:57:31,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:57:31,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 14] total 38 [2023-11-29 06:57:31,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728829737] [2023-11-29 06:57:31,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:31,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 06:57:31,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:31,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 06:57:31,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 06:57:31,664 INFO L87 Difference]: Start difference. First operand 133 states and 160 transitions. Second operand has 38 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 states have internal predecessors, (77), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-29 06:57:34,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:34,355 INFO L93 Difference]: Finished difference Result 292 states and 345 transitions. [2023-11-29 06:57:34,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 06:57:34,356 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 states have internal predecessors, (77), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 57 [2023-11-29 06:57:34,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:34,358 INFO L225 Difference]: With dead ends: 292 [2023-11-29 06:57:34,358 INFO L226 Difference]: Without dead ends: 245 [2023-11-29 06:57:34,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 98 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 674 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=400, Invalid=2680, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 06:57:34,361 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 429 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 76 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 1817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:34,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 228 Invalid, 1817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1724 Invalid, 17 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 06:57:34,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-29 06:57:34,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 168. [2023-11-29 06:57:34,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 126 states have (on average 1.2063492063492063) internal successors, (152), 133 states have internal predecessors, (152), 20 states have call successors, (20), 13 states have call predecessors, (20), 21 states have return successors, (29), 21 states have call predecessors, (29), 19 states have call successors, (29) [2023-11-29 06:57:34,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 201 transitions. [2023-11-29 06:57:34,383 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 201 transitions. Word has length 57 [2023-11-29 06:57:34,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:34,384 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 201 transitions. [2023-11-29 06:57:34,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 31 states have internal predecessors, (77), 9 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-29 06:57:34,384 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 201 transitions. [2023-11-29 06:57:34,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 06:57:34,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:34,385 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:34,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:57:34,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 06:57:34,586 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:34,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:34,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1254752595, now seen corresponding path program 1 times [2023-11-29 06:57:34,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:34,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904545689] [2023-11-29 06:57:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:34,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:35,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:35,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:35,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:57:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:57:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:35,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:57:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:35,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 06:57:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:57:35,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:35,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904545689] [2023-11-29 06:57:35,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904545689] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:35,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905704240] [2023-11-29 06:57:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:35,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:35,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:35,768 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:35,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:57:36,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:36,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 2492 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 06:57:36,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:36,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2023-11-29 06:57:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:57:38,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:38,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:57:38,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4623 treesize of output 1 [2023-11-29 06:57:39,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905704240] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:39,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:57:39,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 33 [2023-11-29 06:57:39,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560527838] [2023-11-29 06:57:39,229 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:39,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 06:57:39,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:39,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 06:57:39,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1632, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 06:57:39,232 INFO L87 Difference]: Start difference. First operand 168 states and 201 transitions. Second operand has 33 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 26 states have internal predecessors, (68), 8 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-11-29 06:57:43,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:57:48,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:48,396 INFO L93 Difference]: Finished difference Result 302 states and 360 transitions. [2023-11-29 06:57:48,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 06:57:48,397 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 26 states have internal predecessors, (68), 8 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) Word has length 57 [2023-11-29 06:57:48,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:48,399 INFO L225 Difference]: With dead ends: 302 [2023-11-29 06:57:48,399 INFO L226 Difference]: Without dead ends: 266 [2023-11-29 06:57:48,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=747, Invalid=4365, Unknown=0, NotChecked=0, Total=5112 [2023-11-29 06:57:48,401 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 643 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 1861 mSolverCounterSat, 170 mSolverCounterUnsat, 38 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 1861 IncrementalHoareTripleChecker+Invalid, 38 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:48,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 179 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 1861 Invalid, 38 Unknown, 0 Unchecked, 6.8s Time] [2023-11-29 06:57:48,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-29 06:57:48,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 171. [2023-11-29 06:57:48,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 129 states have (on average 1.2015503875968991) internal successors, (155), 136 states have internal predecessors, (155), 20 states have call successors, (20), 13 states have call predecessors, (20), 21 states have return successors, (29), 21 states have call predecessors, (29), 19 states have call successors, (29) [2023-11-29 06:57:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 204 transitions. [2023-11-29 06:57:48,426 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 204 transitions. Word has length 57 [2023-11-29 06:57:48,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:48,426 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 204 transitions. [2023-11-29 06:57:48,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 27 states have (on average 2.5185185185185186) internal successors, (68), 26 states have internal predecessors, (68), 8 states have call successors, (13), 6 states have call predecessors, (13), 8 states have return successors, (11), 6 states have call predecessors, (11), 7 states have call successors, (11) [2023-11-29 06:57:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 204 transitions. [2023-11-29 06:57:48,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-29 06:57:48,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:48,428 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:48,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 06:57:48,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 06:57:48,639 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:48,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash 2060493467, now seen corresponding path program 1 times [2023-11-29 06:57:48,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:48,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273071306] [2023-11-29 06:57:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:48,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:48,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:48,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:57:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:48,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:57:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:57:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:48,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 06:57:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 06:57:48,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:48,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273071306] [2023-11-29 06:57:48,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273071306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:48,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834451445] [2023-11-29 06:57:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:48,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:48,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:48,918 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:48,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:57:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:49,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 2482 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 06:57:49,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:49,304 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 06:57:49,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:57:49,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834451445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:49,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:57:49,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-29 06:57:49,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091543866] [2023-11-29 06:57:49,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:49,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 06:57:49,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:49,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 06:57:49,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 06:57:49,306 INFO L87 Difference]: Start difference. First operand 171 states and 204 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 06:57:49,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:49,382 INFO L93 Difference]: Finished difference Result 214 states and 253 transitions. [2023-11-29 06:57:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:57:49,383 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2023-11-29 06:57:49,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:49,384 INFO L225 Difference]: With dead ends: 214 [2023-11-29 06:57:49,384 INFO L226 Difference]: Without dead ends: 137 [2023-11-29 06:57:49,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:57:49,385 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 20 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:49,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 203 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:57:49,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-29 06:57:49,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 130. [2023-11-29 06:57:49,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 96 states have (on average 1.15625) internal successors, (111), 100 states have internal predecessors, (111), 18 states have call successors, (18), 11 states have call predecessors, (18), 15 states have return successors, (22), 18 states have call predecessors, (22), 17 states have call successors, (22) [2023-11-29 06:57:49,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2023-11-29 06:57:49,398 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 57 [2023-11-29 06:57:49,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:49,398 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2023-11-29 06:57:49,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-29 06:57:49,398 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2023-11-29 06:57:49,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 06:57:49,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:49,399 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:49,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:57:49,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 06:57:49,600 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:49,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:49,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1613499571, now seen corresponding path program 1 times [2023-11-29 06:57:49,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:49,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192860198] [2023-11-29 06:57:49,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:49,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:50,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:50,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:50,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:50,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:50,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:57:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:51,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:51,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:57:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:51,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:57:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:51,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 06:57:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:51,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 06:57:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:51,469 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 06:57:51,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:51,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192860198] [2023-11-29 06:57:51,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192860198] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:51,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367768784] [2023-11-29 06:57:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:51,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:51,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:51,471 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:51,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:57:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:51,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 2499 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 06:57:51,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:51,935 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 33 treesize of output 7 [2023-11-29 06:57:52,304 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 06:57:52,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-11-29 06:57:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 06:57:52,341 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:57:52,691 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 806 treesize of output 790 [2023-11-29 06:57:53,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367768784] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:53,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:57:53,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 28 [2023-11-29 06:57:53,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664732377] [2023-11-29 06:57:53,003 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:57:53,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 06:57:53,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:53,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 06:57:53,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1098, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 06:57:53,004 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand has 28 states, 22 states have (on average 2.272727272727273) internal successors, (50), 21 states have internal predecessors, (50), 9 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-29 06:57:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:55,411 INFO L93 Difference]: Finished difference Result 160 states and 189 transitions. [2023-11-29 06:57:55,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 06:57:55,411 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 22 states have (on average 2.272727272727273) internal successors, (50), 21 states have internal predecessors, (50), 9 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) Word has length 59 [2023-11-29 06:57:55,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:55,412 INFO L225 Difference]: With dead ends: 160 [2023-11-29 06:57:55,412 INFO L226 Difference]: Without dead ends: 158 [2023-11-29 06:57:55,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=281, Invalid=2911, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 06:57:55,414 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 231 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 53 mSolverCounterUnsat, 57 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 57 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:55,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 304 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1404 Invalid, 57 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 06:57:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-29 06:57:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 134. [2023-11-29 06:57:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 99 states have (on average 1.1515151515151516) internal successors, (114), 103 states have internal predecessors, (114), 18 states have call successors, (18), 12 states have call predecessors, (18), 16 states have return successors, (22), 18 states have call predecessors, (22), 17 states have call successors, (22) [2023-11-29 06:57:55,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 154 transitions. [2023-11-29 06:57:55,430 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 154 transitions. Word has length 59 [2023-11-29 06:57:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:55,431 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 154 transitions. [2023-11-29 06:57:55,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 22 states have (on average 2.272727272727273) internal successors, (50), 21 states have internal predecessors, (50), 9 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-29 06:57:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 154 transitions. [2023-11-29 06:57:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 06:57:55,432 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:55,432 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:55,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:57:55,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 06:57:55,633 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:55,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1475200750, now seen corresponding path program 1 times [2023-11-29 06:57:55,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:55,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992266630] [2023-11-29 06:57:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:55,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:56,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:56,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:56,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:57:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:56,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:56,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:57:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:56,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:57:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:56,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 06:57:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:56,286 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-29 06:57:56,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:56,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992266630] [2023-11-29 06:57:56,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992266630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:57:56,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:57:56,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 06:57:56,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661738556] [2023-11-29 06:57:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:57:56,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:57:56,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:57:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:57:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-29 06:57:56,288 INFO L87 Difference]: Start difference. First operand 134 states and 154 transitions. Second operand has 12 states, 10 states have (on average 3.7) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-29 06:57:56,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:57:56,725 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2023-11-29 06:57:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:57:56,726 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.7) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 59 [2023-11-29 06:57:56,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:57:56,727 INFO L225 Difference]: With dead ends: 157 [2023-11-29 06:57:56,727 INFO L226 Difference]: Without dead ends: 155 [2023-11-29 06:57:56,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:57:56,728 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 101 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:57:56,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 255 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 06:57:56,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-29 06:57:56,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 146. [2023-11-29 06:57:56,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 109 states have (on average 1.1376146788990826) internal successors, (124), 115 states have internal predecessors, (124), 18 states have call successors, (18), 12 states have call predecessors, (18), 18 states have return successors, (25), 18 states have call predecessors, (25), 17 states have call successors, (25) [2023-11-29 06:57:56,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 167 transitions. [2023-11-29 06:57:56,750 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 167 transitions. Word has length 59 [2023-11-29 06:57:56,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:57:56,751 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 167 transitions. [2023-11-29 06:57:56,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.7) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-29 06:57:56,751 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 167 transitions. [2023-11-29 06:57:56,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 06:57:56,752 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:57:56,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:57:56,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 06:57:56,752 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:57:56,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:57:56,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1082173740, now seen corresponding path program 1 times [2023-11-29 06:57:56,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:57:56,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799494066] [2023-11-29 06:57:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:56,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:57:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:57,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:57,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:57,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:57:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:57,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:57:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:57,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:57:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:58,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:57:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:58,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 06:57:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:58,326 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:57:58,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:57:58,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799494066] [2023-11-29 06:57:58,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799494066] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:57:58,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021451358] [2023-11-29 06:57:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:57:58,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:57:58,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:57:58,328 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:57:58,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:57:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:57:58,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 2502 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 06:57:58,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:57:58,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2023-11-29 06:58:00,076 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:58:00,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:58:00,432 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 670 treesize of output 646 [2023-11-29 06:58:00,831 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:58:00,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021451358] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:58:00,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:58:00,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 13] total 36 [2023-11-29 06:58:00,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057070791] [2023-11-29 06:58:00,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:58:00,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 06:58:00,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:58:00,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 06:58:00,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1123, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 06:58:00,834 INFO L87 Difference]: Start difference. First operand 146 states and 167 transitions. Second operand has 36 states, 29 states have (on average 3.103448275862069) internal successors, (90), 28 states have internal predecessors, (90), 8 states have call successors, (14), 6 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-29 06:58:05,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:58:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:58:08,720 INFO L93 Difference]: Finished difference Result 267 states and 304 transitions. [2023-11-29 06:58:08,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 06:58:08,720 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 29 states have (on average 3.103448275862069) internal successors, (90), 28 states have internal predecessors, (90), 8 states have call successors, (14), 6 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 59 [2023-11-29 06:58:08,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:58:08,722 INFO L225 Difference]: With dead ends: 267 [2023-11-29 06:58:08,722 INFO L226 Difference]: Without dead ends: 225 [2023-11-29 06:58:08,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 107 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=512, Invalid=2680, Unknown=0, NotChecked=0, Total=3192 [2023-11-29 06:58:08,724 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 580 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 161 mSolverCounterUnsat, 24 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 24 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:58:08,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 155 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1570 Invalid, 24 Unknown, 0 Unchecked, 6.6s Time] [2023-11-29 06:58:08,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-29 06:58:08,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 178. [2023-11-29 06:58:08,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 129 states have (on average 1.124031007751938) internal successors, (145), 134 states have internal predecessors, (145), 26 states have call successors, (26), 17 states have call predecessors, (26), 22 states have return successors, (31), 26 states have call predecessors, (31), 24 states have call successors, (31) [2023-11-29 06:58:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 202 transitions. [2023-11-29 06:58:08,751 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 202 transitions. Word has length 59 [2023-11-29 06:58:08,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:58:08,752 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 202 transitions. [2023-11-29 06:58:08,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 29 states have (on average 3.103448275862069) internal successors, (90), 28 states have internal predecessors, (90), 8 states have call successors, (14), 6 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-29 06:58:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 202 transitions. [2023-11-29 06:58:08,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 06:58:08,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:58:08,753 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:58:08,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:58:08,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 06:58:08,954 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:58:08,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:58:08,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1183094521, now seen corresponding path program 1 times [2023-11-29 06:58:08,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:58:08,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141478110] [2023-11-29 06:58:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:08,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:58:09,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:58:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:10,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:58:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:10,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:58:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:58:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:10,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:58:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 06:58:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:11,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 06:58:11,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:11,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 06:58:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:11,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 06:58:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-29 06:58:11,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:58:11,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141478110] [2023-11-29 06:58:11,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141478110] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:58:11,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159139831] [2023-11-29 06:58:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:11,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:11,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:58:11,111 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:58:11,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:58:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:11,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 2510 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-29 06:58:11,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:58:11,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 06:58:13,760 INFO L349 Elim1Store]: treesize reduction 50, result has 60.6 percent of original size [2023-11-29 06:58:13,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 81 treesize of output 105 [2023-11-29 06:58:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-29 06:58:13,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:58:14,445 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 730 treesize of output 694 [2023-11-29 06:58:14,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159139831] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:58:14,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:58:14,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 24] total 37 [2023-11-29 06:58:14,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453035190] [2023-11-29 06:58:14,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:58:14,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 06:58:14,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:58:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 06:58:14,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1735, Unknown=0, NotChecked=0, Total=1892 [2023-11-29 06:58:14,787 INFO L87 Difference]: Start difference. First operand 178 states and 202 transitions. Second operand has 37 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 10 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-29 06:58:19,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:58:24,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:58:24,700 INFO L93 Difference]: Finished difference Result 223 states and 246 transitions. [2023-11-29 06:58:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 06:58:24,700 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 10 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) Word has length 65 [2023-11-29 06:58:24,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:58:24,701 INFO L225 Difference]: With dead ends: 223 [2023-11-29 06:58:24,701 INFO L226 Difference]: Without dead ends: 221 [2023-11-29 06:58:24,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1607 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=747, Invalid=5895, Unknown=0, NotChecked=0, Total=6642 [2023-11-29 06:58:24,704 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 513 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 108 mSolverCounterUnsat, 55 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 55 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:58:24,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 241 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 1886 Invalid, 55 Unknown, 0 Unchecked, 7.1s Time] [2023-11-29 06:58:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-29 06:58:24,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 182. [2023-11-29 06:58:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 132 states have (on average 1.121212121212121) internal successors, (148), 137 states have internal predecessors, (148), 26 states have call successors, (26), 18 states have call predecessors, (26), 23 states have return successors, (31), 26 states have call predecessors, (31), 24 states have call successors, (31) [2023-11-29 06:58:24,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 205 transitions. [2023-11-29 06:58:24,732 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 205 transitions. Word has length 65 [2023-11-29 06:58:24,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:58:24,732 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 205 transitions. [2023-11-29 06:58:24,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 29 states have (on average 2.413793103448276) internal successors, (70), 28 states have internal predecessors, (70), 10 states have call successors, (18), 6 states have call predecessors, (18), 7 states have return successors, (15), 9 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-29 06:58:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 205 transitions. [2023-11-29 06:58:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 06:58:24,733 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:58:24,733 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:58:24,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:58:24,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:24,934 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:58:24,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:58:24,934 INFO L85 PathProgramCache]: Analyzing trace with hash 538607530, now seen corresponding path program 1 times [2023-11-29 06:58:24,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:58:24,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933268141] [2023-11-29 06:58:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:24,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:58:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:58:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:26,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:58:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:26,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:58:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:26,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:58:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:26,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:58:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:27,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 06:58:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:27,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 06:58:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:58:27,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:58:27,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933268141] [2023-11-29 06:58:27,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933268141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:58:27,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127485082] [2023-11-29 06:58:27,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:27,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:27,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:58:27,249 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:58:27,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:58:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:27,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 06:58:27,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:58:27,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 06:58:28,161 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2023-11-29 06:58:28,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 21 [2023-11-29 06:58:28,164 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 06:58:28,164 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:58:28,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127485082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:58:28,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:58:28,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [19] total 27 [2023-11-29 06:58:28,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831101375] [2023-11-29 06:58:28,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:58:28,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 06:58:28,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:58:28,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 06:58:28,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2023-11-29 06:58:28,166 INFO L87 Difference]: Start difference. First operand 182 states and 205 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 06:58:32,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:58:32,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:58:32,959 INFO L93 Difference]: Finished difference Result 304 states and 343 transitions. [2023-11-29 06:58:32,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 06:58:32,960 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2023-11-29 06:58:32,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:58:32,961 INFO L225 Difference]: With dead ends: 304 [2023-11-29 06:58:32,961 INFO L226 Difference]: Without dead ends: 205 [2023-11-29 06:58:32,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=144, Invalid=912, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 06:58:32,962 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 106 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:58:32,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 282 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 304 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2023-11-29 06:58:32,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-29 06:58:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 177. [2023-11-29 06:58:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 128 states have (on average 1.125) internal successors, (144), 132 states have internal predecessors, (144), 26 states have call successors, (26), 18 states have call predecessors, (26), 22 states have return successors, (29), 26 states have call predecessors, (29), 24 states have call successors, (29) [2023-11-29 06:58:32,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 199 transitions. [2023-11-29 06:58:32,989 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 199 transitions. Word has length 63 [2023-11-29 06:58:32,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:58:32,989 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 199 transitions. [2023-11-29 06:58:32,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-29 06:58:32,989 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 199 transitions. [2023-11-29 06:58:32,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 06:58:32,990 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:58:32,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:58:32,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 06:58:33,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:33,191 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:58:33,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:58:33,191 INFO L85 PathProgramCache]: Analyzing trace with hash 466220972, now seen corresponding path program 1 times [2023-11-29 06:58:33,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:58:33,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975243435] [2023-11-29 06:58:33,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:33,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:58:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:33,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:58:33,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:33,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:58:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:33,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:58:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:58:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:58:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:34,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 06:58:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 06:58:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-29 06:58:34,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:58:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975243435] [2023-11-29 06:58:34,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975243435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:58:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663222967] [2023-11-29 06:58:34,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:58:34,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:58:34,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:58:34,527 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:58:34,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:58:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:58:34,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 06:58:34,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:58:34,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2023-11-29 06:58:36,228 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:58:36,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:58:36,581 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 798 treesize of output 774 [2023-11-29 06:58:36,954 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:58:36,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663222967] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:58:36,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:58:36,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 13] total 37 [2023-11-29 06:58:36,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241477662] [2023-11-29 06:58:36,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:58:36,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-29 06:58:36,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:58:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-29 06:58:36,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1184, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 06:58:36,956 INFO L87 Difference]: Start difference. First operand 177 states and 199 transitions. Second operand has 37 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 29 states have internal predecessors, (100), 8 states have call successors, (14), 6 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-29 06:58:41,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:58:45,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:58:49,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:58:55,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:58:58,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:58:59,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:59:03,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:59:04,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:59:04,328 INFO L93 Difference]: Finished difference Result 273 states and 303 transitions. [2023-11-29 06:59:04,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 06:59:04,329 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 29 states have internal predecessors, (100), 8 states have call successors, (14), 6 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 63 [2023-11-29 06:59:04,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:59:04,330 INFO L225 Difference]: With dead ends: 273 [2023-11-29 06:59:04,330 INFO L226 Difference]: Without dead ends: 182 [2023-11-29 06:59:04,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 114 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=427, Invalid=2329, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 06:59:04,332 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 291 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 61 mSolverCounterUnsat, 36 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 2276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 36 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:59:04,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 247 Invalid, 2276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2179 Invalid, 36 Unknown, 0 Unchecked, 26.3s Time] [2023-11-29 06:59:04,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-29 06:59:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2023-11-29 06:59:04,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 122 states have (on average 1.0737704918032787) internal successors, (131), 124 states have internal predecessors, (131), 25 states have call successors, (25), 18 states have call predecessors, (25), 20 states have return successors, (25), 25 states have call predecessors, (25), 23 states have call successors, (25) [2023-11-29 06:59:04,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 181 transitions. [2023-11-29 06:59:04,359 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 181 transitions. Word has length 63 [2023-11-29 06:59:04,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:59:04,359 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 181 transitions. [2023-11-29 06:59:04,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 3.3333333333333335) internal successors, (100), 29 states have internal predecessors, (100), 8 states have call successors, (14), 6 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-29 06:59:04,359 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 181 transitions. [2023-11-29 06:59:04,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 06:59:04,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:59:04,360 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:59:04,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 06:59:04,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:59:04,561 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:59:04,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:04,561 INFO L85 PathProgramCache]: Analyzing trace with hash -544896278, now seen corresponding path program 1 times [2023-11-29 06:59:04,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:04,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494616342] [2023-11-29 06:59:04,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:04,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:05,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:59:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:05,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:59:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:05,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:59:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:59:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:06,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:59:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:06,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 06:59:06,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:06,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 06:59:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:59:06,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:06,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494616342] [2023-11-29 06:59:06,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494616342] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:59:06,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632289081] [2023-11-29 06:59:06,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:06,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:59:06,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:59:06,628 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:59:06,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:59:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:07,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 06:59:07,135 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:59:07,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2023-11-29 06:59:08,313 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-29 06:59:08,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:59:08,695 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 761 treesize of output 737 [2023-11-29 06:59:09,200 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:59:09,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632289081] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:59:09,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:59:09,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 13] total 41 [2023-11-29 06:59:09,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790127903] [2023-11-29 06:59:09,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:59:09,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 06:59:09,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:09,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 06:59:09,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=1482, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 06:59:09,203 INFO L87 Difference]: Start difference. First operand 168 states and 181 transitions. Second operand has 41 states, 32 states have (on average 3.5) internal successors, (112), 33 states have internal predecessors, (112), 10 states have call successors, (15), 6 states have call predecessors, (15), 11 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2023-11-29 06:59:13,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:59:17,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:59:21,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:59:27,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:59:32,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:59:36,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:59:37,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:59:37,207 INFO L93 Difference]: Finished difference Result 226 states and 242 transitions. [2023-11-29 06:59:37,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 06:59:37,208 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 32 states have (on average 3.5) internal successors, (112), 33 states have internal predecessors, (112), 10 states have call successors, (15), 6 states have call predecessors, (15), 11 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 63 [2023-11-29 06:59:37,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:59:37,209 INFO L225 Difference]: With dead ends: 226 [2023-11-29 06:59:37,209 INFO L226 Difference]: Without dead ends: 181 [2023-11-29 06:59:37,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=502, Invalid=2796, Unknown=8, NotChecked=0, Total=3306 [2023-11-29 06:59:37,212 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 285 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 57 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2023-11-29 06:59:37,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 395 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2880 Invalid, 26 Unknown, 0 Unchecked, 26.7s Time] [2023-11-29 06:59:37,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-29 06:59:37,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2023-11-29 06:59:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 117 states have (on average 1.0598290598290598) internal successors, (124), 119 states have internal predecessors, (124), 25 states have call successors, (25), 18 states have call predecessors, (25), 20 states have return successors, (25), 25 states have call predecessors, (25), 23 states have call successors, (25) [2023-11-29 06:59:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 174 transitions. [2023-11-29 06:59:37,240 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 174 transitions. Word has length 63 [2023-11-29 06:59:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:59:37,241 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 174 transitions. [2023-11-29 06:59:37,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 32 states have (on average 3.5) internal successors, (112), 33 states have internal predecessors, (112), 10 states have call successors, (15), 6 states have call predecessors, (15), 11 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2023-11-29 06:59:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 174 transitions. [2023-11-29 06:59:37,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-29 06:59:37,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:59:37,242 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:59:37,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:59:37,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:59:37,443 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:59:37,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:37,443 INFO L85 PathProgramCache]: Analyzing trace with hash 2027938086, now seen corresponding path program 1 times [2023-11-29 06:59:37,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:37,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223116130] [2023-11-29 06:59:37,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:37,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:37,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:40,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:59:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:40,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:59:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:59:40,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:40,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:59:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:40,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:59:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:40,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 06:59:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 06:59:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:59:41,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:41,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223116130] [2023-11-29 06:59:41,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223116130] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:59:41,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982122461] [2023-11-29 06:59:41,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:41,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:59:41,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:59:41,211 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:59:41,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 06:59:42,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:42,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 2506 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 06:59:42,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:59:42,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 15 [2023-11-29 06:59:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 06:59:43,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:59:43,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982122461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:59:43,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 06:59:43,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [17] total 27 [2023-11-29 06:59:43,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112512186] [2023-11-29 06:59:43,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:59:43,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:59:43,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:43,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:59:43,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2023-11-29 06:59:43,050 INFO L87 Difference]: Start difference. First operand 163 states and 174 transitions. Second operand has 13 states, 10 states have (on average 4.5) internal successors, (45), 12 states have internal predecessors, (45), 6 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 06:59:47,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 06:59:48,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:59:48,203 INFO L93 Difference]: Finished difference Result 201 states and 215 transitions. [2023-11-29 06:59:48,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:59:48,204 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 4.5) internal successors, (45), 12 states have internal predecessors, (45), 6 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 63 [2023-11-29 06:59:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:59:48,204 INFO L225 Difference]: With dead ends: 201 [2023-11-29 06:59:48,204 INFO L226 Difference]: Without dead ends: 165 [2023-11-29 06:59:48,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 65 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=137, Invalid=919, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 06:59:48,205 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 61 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:59:48,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 316 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 408 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2023-11-29 06:59:48,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-29 06:59:48,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2023-11-29 06:59:48,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 117 states have (on average 1.0512820512820513) internal successors, (123), 119 states have internal predecessors, (123), 25 states have call successors, (25), 18 states have call predecessors, (25), 20 states have return successors, (25), 25 states have call predecessors, (25), 23 states have call successors, (25) [2023-11-29 06:59:48,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 173 transitions. [2023-11-29 06:59:48,236 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 173 transitions. Word has length 63 [2023-11-29 06:59:48,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:59:48,236 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 173 transitions. [2023-11-29 06:59:48,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 4.5) internal successors, (45), 12 states have internal predecessors, (45), 6 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-29 06:59:48,236 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 173 transitions. [2023-11-29 06:59:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-29 06:59:48,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:59:48,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:59:48,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 06:59:48,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:59:48,437 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:59:48,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:59:48,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1084088383, now seen corresponding path program 1 times [2023-11-29 06:59:48,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:59:48,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226498019] [2023-11-29 06:59:48,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:48,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:59:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:50,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:59:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:50,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:59:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:50,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 06:59:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 06:59:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 06:59:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:50,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 06:59:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:50,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 06:59:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 06:59:51,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:59:51,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226498019] [2023-11-29 06:59:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226498019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:59:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917753070] [2023-11-29 06:59:51,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:59:51,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:59:51,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:59:51,232 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:59:51,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 06:59:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:59:51,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 2516 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-29 06:59:51,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:59:51,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2023-11-29 06:59:52,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 65 [2023-11-29 06:59:52,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 110 [2023-11-29 06:59:52,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 23 [2023-11-29 06:59:52,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 11 [2023-11-29 06:59:52,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2023-11-29 06:59:52,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:59:52,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 98 treesize of output 106 [2023-11-29 06:59:54,413 INFO L349 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2023-11-29 06:59:54,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 58 [2023-11-29 06:59:54,464 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:59:54,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:59:55,607 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:59:55,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 86 [2023-11-29 06:59:55,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2023-11-29 06:59:55,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:59:55,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 6 [2023-11-29 06:59:55,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917753070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:59:55,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:59:55,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 49 [2023-11-29 06:59:55,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005299788] [2023-11-29 06:59:55,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:59:55,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-29 06:59:55,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:59:55,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-29 06:59:55,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3724, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 06:59:55,901 INFO L87 Difference]: Start difference. First operand 163 states and 173 transitions. Second operand has 49 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 37 states have internal predecessors, (91), 11 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 9 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-29 07:00:00,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:00:04,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:00:08,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:00:12,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:00:16,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:00:22,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:00:26,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 07:00:31,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:00:31,214 INFO L93 Difference]: Finished difference Result 173 states and 181 transitions. [2023-11-29 07:00:31,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 07:00:31,214 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 37 states have internal predecessors, (91), 11 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 9 states have call predecessors, (13), 10 states have call successors, (13) Word has length 65 [2023-11-29 07:00:31,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:00:31,215 INFO L225 Difference]: With dead ends: 173 [2023-11-29 07:00:31,215 INFO L226 Difference]: Without dead ends: 171 [2023-11-29 07:00:31,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1809 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=704, Invalid=8998, Unknown=0, NotChecked=0, Total=9702 [2023-11-29 07:00:31,218 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 225 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 3677 mSolverCounterSat, 100 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 3799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3677 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2023-11-29 07:00:31,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 712 Invalid, 3799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3677 Invalid, 22 Unknown, 0 Unchecked, 31.6s Time] [2023-11-29 07:00:31,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-29 07:00:31,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2023-11-29 07:00:31,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 120 states have (on average 1.05) internal successors, (126), 122 states have internal predecessors, (126), 25 states have call successors, (25), 19 states have call predecessors, (25), 21 states have return successors, (25), 25 states have call predecessors, (25), 23 states have call successors, (25) [2023-11-29 07:00:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 176 transitions. [2023-11-29 07:00:31,268 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 176 transitions. Word has length 65 [2023-11-29 07:00:31,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:00:31,269 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 176 transitions. [2023-11-29 07:00:31,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 37 states have (on average 2.4594594594594597) internal successors, (91), 37 states have internal predecessors, (91), 11 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 9 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-29 07:00:31,269 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 176 transitions. [2023-11-29 07:00:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 07:00:31,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:00:31,270 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:31,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 07:00:31,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:00:31,470 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:00:31,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:31,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1327862435, now seen corresponding path program 1 times [2023-11-29 07:00:31,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:31,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908998749] [2023-11-29 07:00:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:31,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:32,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 07:00:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:32,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:00:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 07:00:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:32,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:00:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:32,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 07:00:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:32,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 07:00:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:00:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 07:00:32,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:32,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908998749] [2023-11-29 07:00:32,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908998749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:00:32,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:00:32,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 07:00:32,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104907845] [2023-11-29 07:00:32,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:00:32,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 07:00:32,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:32,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 07:00:32,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 07:00:32,337 INFO L87 Difference]: Start difference. First operand 167 states and 176 transitions. Second operand has 11 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:00:32,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:00:32,776 INFO L93 Difference]: Finished difference Result 177 states and 185 transitions. [2023-11-29 07:00:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 07:00:32,776 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 71 [2023-11-29 07:00:32,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:00:32,777 INFO L225 Difference]: With dead ends: 177 [2023-11-29 07:00:32,777 INFO L226 Difference]: Without dead ends: 175 [2023-11-29 07:00:32,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-29 07:00:32,778 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 41 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:00:32,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 142 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:00:32,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-29 07:00:32,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-11-29 07:00:32,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 126 states have (on average 1.0476190476190477) internal successors, (132), 128 states have internal predecessors, (132), 25 states have call successors, (25), 21 states have call predecessors, (25), 23 states have return successors, (25), 25 states have call predecessors, (25), 23 states have call successors, (25) [2023-11-29 07:00:32,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 182 transitions. [2023-11-29 07:00:32,816 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 182 transitions. Word has length 71 [2023-11-29 07:00:32,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:00:32,816 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 182 transitions. [2023-11-29 07:00:32,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-29 07:00:32,816 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 182 transitions. [2023-11-29 07:00:32,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-29 07:00:32,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:00:32,817 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:32,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 07:00:32,817 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:00:32,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:32,817 INFO L85 PathProgramCache]: Analyzing trace with hash -977344943, now seen corresponding path program 1 times [2023-11-29 07:00:32,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:32,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028587645] [2023-11-29 07:00:32,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:32,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:34,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:34,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 07:00:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:34,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:00:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:34,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 07:00:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:34,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 07:00:34,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:34,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 07:00:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:34,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 07:00:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:34,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:00:34,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:34,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 07:00:34,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 07:00:34,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:34,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028587645] [2023-11-29 07:00:34,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028587645] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 07:00:34,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283958991] [2023-11-29 07:00:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:34,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 07:00:34,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:00:34,623 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 07:00:34,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 07:00:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:35,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 2563 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 07:00:35,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:00:36,389 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 07:00:36,390 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 07:00:36,860 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 07:00:36,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2023-11-29 07:00:36,869 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-29 07:00:36,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2023-11-29 07:00:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-29 07:00:36,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283958991] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 07:00:36,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 07:00:36,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 11] total 27 [2023-11-29 07:00:36,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270213244] [2023-11-29 07:00:36,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 07:00:36,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-29 07:00:36,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:36,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-29 07:00:36,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2023-11-29 07:00:36,890 INFO L87 Difference]: Start difference. First operand 175 states and 182 transitions. Second operand has 27 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 20 states have internal predecessors, (74), 8 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2023-11-29 07:00:39,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:00:39,073 INFO L93 Difference]: Finished difference Result 180 states and 186 transitions. [2023-11-29 07:00:39,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 07:00:39,073 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 20 states have internal predecessors, (74), 8 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) Word has length 78 [2023-11-29 07:00:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:00:39,074 INFO L225 Difference]: With dead ends: 180 [2023-11-29 07:00:39,074 INFO L226 Difference]: Without dead ends: 97 [2023-11-29 07:00:39,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 158 SyntacticMatches, 12 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=338, Invalid=1732, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 07:00:39,075 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 167 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 07:00:39,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 274 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1051 Invalid, 1 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 07:00:39,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-29 07:00:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-11-29 07:00:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.0144927536231885) internal successors, (70), 70 states have internal predecessors, (70), 15 states have call successors, (15), 12 states have call predecessors, (15), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-29 07:00:39,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 99 transitions. [2023-11-29 07:00:39,094 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 99 transitions. Word has length 78 [2023-11-29 07:00:39,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:00:39,095 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 99 transitions. [2023-11-29 07:00:39,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 20 states have internal predecessors, (74), 8 states have call successors, (22), 5 states have call predecessors, (22), 7 states have return successors, (21), 8 states have call predecessors, (21), 7 states have call successors, (21) [2023-11-29 07:00:39,095 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 99 transitions. [2023-11-29 07:00:39,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 07:00:39,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:00:39,096 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:39,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 07:00:39,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 07:00:39,296 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:00:39,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:39,297 INFO L85 PathProgramCache]: Analyzing trace with hash 654526745, now seen corresponding path program 1 times [2023-11-29 07:00:39,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:39,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496235799] [2023-11-29 07:00:39,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:39,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:40,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:40,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:40,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 07:00:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:40,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:40,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:00:40,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:40,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 07:00:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:40,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 07:00:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:40,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:00:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:40,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 07:00:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:40,643 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-29 07:00:40,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:40,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496235799] [2023-11-29 07:00:40,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496235799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:00:40,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:00:40,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 07:00:40,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777920572] [2023-11-29 07:00:40,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:00:40,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 07:00:40,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:40,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 07:00:40,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-29 07:00:40,645 INFO L87 Difference]: Start difference. First operand 97 states and 99 transitions. Second operand has 12 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-29 07:00:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:00:41,091 INFO L93 Difference]: Finished difference Result 103 states and 104 transitions. [2023-11-29 07:00:41,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 07:00:41,092 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 77 [2023-11-29 07:00:41,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:00:41,092 INFO L225 Difference]: With dead ends: 103 [2023-11-29 07:00:41,093 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 07:00:41,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-11-29 07:00:41,093 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 07:00:41,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 147 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 07:00:41,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 07:00:41,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-11-29 07:00:41,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 72 states have (on average 1.0138888888888888) internal successors, (73), 73 states have internal predecessors, (73), 15 states have call successors, (15), 13 states have call predecessors, (15), 13 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-29 07:00:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions. [2023-11-29 07:00:41,125 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 77 [2023-11-29 07:00:41,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:00:41,125 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions. [2023-11-29 07:00:41,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.4) internal successors, (34), 8 states have internal predecessors, (34), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-11-29 07:00:41,126 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions. [2023-11-29 07:00:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-29 07:00:41,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:00:41,126 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:41,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 07:00:41,127 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:00:41,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:41,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1813338063, now seen corresponding path program 1 times [2023-11-29 07:00:41,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:41,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257284002] [2023-11-29 07:00:41,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:41,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:42,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:42,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:42,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 07:00:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:43,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:43,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:43,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:00:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:43,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 07:00:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:43,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 07:00:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:43,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:00:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:43,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 07:00:43,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 07:00:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 07:00:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-29 07:00:43,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:43,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257284002] [2023-11-29 07:00:43,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257284002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:00:43,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:00:43,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-29 07:00:43,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128544752] [2023-11-29 07:00:43,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:00:43,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 07:00:43,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:43,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 07:00:43,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-11-29 07:00:43,243 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand has 16 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-29 07:00:43,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:00:43,922 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2023-11-29 07:00:43,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 07:00:43,922 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 90 [2023-11-29 07:00:43,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:00:43,923 INFO L225 Difference]: With dead ends: 107 [2023-11-29 07:00:43,923 INFO L226 Difference]: Without dead ends: 103 [2023-11-29 07:00:43,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2023-11-29 07:00:43,924 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 49 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:00:43,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 168 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 07:00:43,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-29 07:00:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-29 07:00:43,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 74 states have (on average 1.0) internal successors, (74), 74 states have internal predecessors, (74), 15 states have call successors, (15), 14 states have call predecessors, (15), 13 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-29 07:00:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2023-11-29 07:00:43,945 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 90 [2023-11-29 07:00:43,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:00:43,946 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2023-11-29 07:00:43,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 11 states have internal predecessors, (37), 6 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-29 07:00:43,946 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2023-11-29 07:00:43,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-29 07:00:43,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 07:00:43,947 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:43,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 07:00:43,947 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 07:00:43,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:00:43,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1920237082, now seen corresponding path program 1 times [2023-11-29 07:00:43,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:00:43,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021937935] [2023-11-29 07:00:43,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:00:43,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:00:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 07:00:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 07:00:46,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 07:00:46,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 07:00:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 07:00:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 07:00:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 07:00:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 07:00:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 07:00:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 07:00:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 07:00:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 07:00:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:00:46,783 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 07:00:46,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:00:46,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021937935] [2023-11-29 07:00:46,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021937935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:00:46,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:00:46,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-29 07:00:46,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027322728] [2023-11-29 07:00:46,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:00:46,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 07:00:46,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:00:46,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 07:00:46,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2023-11-29 07:00:46,785 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand has 17 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 07:00:47,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 07:00:47,552 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2023-11-29 07:00:47,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 07:00:47,552 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) Word has length 106 [2023-11-29 07:00:47,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 07:00:47,553 INFO L225 Difference]: With dead ends: 103 [2023-11-29 07:00:47,553 INFO L226 Difference]: Without dead ends: 0 [2023-11-29 07:00:47,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2023-11-29 07:00:47,554 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 73 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 07:00:47,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 186 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 07:00:47,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-29 07:00:47,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-29 07:00:47,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:00:47,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-29 07:00:47,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2023-11-29 07:00:47,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 07:00:47,555 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-29 07:00:47,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 12 states have internal predecessors, (41), 7 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 07:00:47,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-29 07:00:47,555 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-29 07:00:47,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 07:00:47,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-29 07:00:47,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-29 07:00:53,583 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 6882 6887) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2023-11-29 07:00:53,583 INFO L899 garLoopResultBuilder]: For program point bounded_mallocEXIT(lines 6882 6887) no Hoare annotation was computed. [2023-11-29 07:00:53,583 INFO L899 garLoopResultBuilder]: For program point L6883-1(lines 6883 6885) no Hoare annotation was computed. [2023-11-29 07:00:53,583 INFO L895 garLoopResultBuilder]: At program point L6883(lines 6883 6885) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2023-11-29 07:00:53,583 INFO L899 garLoopResultBuilder]: For program point nondet_uint64_tEXIT(line 266) no Hoare annotation was computed. [2023-11-29 07:00:53,583 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line 266) the Hoare annotation is: true [2023-11-29 07:00:53,583 INFO L899 garLoopResultBuilder]: For program point L7377-3(line 7377) no Hoare annotation was computed. [2023-11-29 07:00:53,583 INFO L899 garLoopResultBuilder]: For program point L7377-1(line 7377) no Hoare annotation was computed. [2023-11-29 07:00:53,583 INFO L899 garLoopResultBuilder]: For program point L7377(lines 7377 7380) no Hoare annotation was computed. [2023-11-29 07:00:53,584 INFO L899 garLoopResultBuilder]: For program point L7377-7(lines 7377 7380) no Hoare annotation was computed. [2023-11-29 07:00:53,584 INFO L899 garLoopResultBuilder]: For program point L7377-6(lines 7377 7378) no Hoare annotation was computed. [2023-11-29 07:00:53,584 INFO L899 garLoopResultBuilder]: For program point L7377-4(lines 7377 7378) no Hoare annotation was computed. [2023-11-29 07:00:53,584 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7375 7381) the Hoare annotation is: true [2023-11-29 07:00:53,584 INFO L899 garLoopResultBuilder]: For program point L7377-11(lines 7377 7380) no Hoare annotation was computed. [2023-11-29 07:00:53,584 INFO L899 garLoopResultBuilder]: For program point L7377-9(lines 7377 7380) no Hoare annotation was computed. [2023-11-29 07:00:53,584 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_is_validEXIT(lines 7375 7381) no Hoare annotation was computed. [2023-11-29 07:00:53,584 INFO L899 garLoopResultBuilder]: For program point L7380-2(line 7380) no Hoare annotation was computed. [2023-11-29 07:00:53,584 INFO L899 garLoopResultBuilder]: For program point L7380(line 7380) no Hoare annotation was computed. [2023-11-29 07:00:53,584 INFO L899 garLoopResultBuilder]: For program point L7380-6(line 7380) no Hoare annotation was computed. [2023-11-29 07:00:53,584 INFO L899 garLoopResultBuilder]: For program point L7380-4(line 7380) no Hoare annotation was computed. [2023-11-29 07:00:53,585 INFO L899 garLoopResultBuilder]: For program point L7380-3(line 7380) no Hoare annotation was computed. [2023-11-29 07:00:53,585 INFO L899 garLoopResultBuilder]: For program point L7380-8(line 7380) no Hoare annotation was computed. [2023-11-29 07:00:53,585 INFO L899 garLoopResultBuilder]: For program point L211-2(lines 210 212) no Hoare annotation was computed. [2023-11-29 07:00:53,585 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 210 212) the Hoare annotation is: true [2023-11-29 07:00:53,585 INFO L899 garLoopResultBuilder]: For program point L211(line 211) no Hoare annotation was computed. [2023-11-29 07:00:53,585 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 210 212) no Hoare annotation was computed. [2023-11-29 07:00:53,585 INFO L899 garLoopResultBuilder]: For program point L8204-1(line 8204) no Hoare annotation was computed. [2023-11-29 07:00:53,585 INFO L895 garLoopResultBuilder]: At program point L8204(line 8204) the Hoare annotation is: (or (and (= aws_byte_buf_from_array_~bytes.offset |aws_byte_buf_from_array_#in~bytes.offset|) (= |old(#length)| |#length|) (= |#memory_real#4| |old(#memory_real#4)|) (= |#memory_int#4| |old(#memory_int#4)|) (= |old(#memory_$Pointer$#4.base)| |#memory_$Pointer$#4.base|) (= |old(#valid)| |#valid|) (= aws_byte_buf_from_array_~len |aws_byte_buf_from_array_#in~len|) (= aws_byte_buf_from_array_~bytes.base |aws_byte_buf_from_array_#in~bytes.base|) (= |#memory_$Pointer$#4.offset| |old(#memory_$Pointer$#4.offset)|)) (= |aws_byte_buf_from_array_#in~bytes.base| 0)) [2023-11-29 07:00:53,585 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 8203 8216) the Hoare annotation is: (or (= |aws_byte_buf_from_array_#in~bytes.base| 0) (and (= |old(#length)| |#length|) (= |#memory_real#4| |old(#memory_real#4)|) (= |#memory_int#4| |old(#memory_int#4)|) (= |old(#memory_$Pointer$#4.base)| |#memory_$Pointer$#4.base|) (= |old(#valid)| |#valid|) (= |#memory_$Pointer$#4.offset| |old(#memory_$Pointer$#4.offset)|))) [2023-11-29 07:00:53,586 INFO L895 garLoopResultBuilder]: At program point L8214(line 8214) the Hoare annotation is: (or (= |aws_byte_buf_from_array_#in~bytes.base| 0) (let ((.cse4 (select |#memory_$Pointer$#4.offset| |aws_byte_buf_from_array_~#buf~1.base|))) (let ((.cse5 (select .cse4 8)) (.cse3 (select |#memory_$Pointer$#4.base| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse7 (select |#memory_int#4| |aws_byte_buf_from_array_~#buf~1.base|))) (let ((.cse0 (select .cse7 16)) (.cse2 (select .cse3 8)) (.cse6 (= .cse5 0)) (.cse1 (select .cse7 0))) (and (= aws_byte_buf_from_array_~bytes.offset |aws_byte_buf_from_array_#in~bytes.offset|) (= .cse0 .cse1) (or (<= (mod .cse0 18446744073709551616) 0) (= |aws_byte_buf_from_array_#in~bytes.base| .cse2)) (= (select .cse3 24) 0) (= (select .cse4 24) 0) (or (= .cse5 |aws_byte_buf_from_array_#in~bytes.offset|) .cse6) (= |aws_byte_buf_from_array_~#buf~1.offset| 0) (not (= |aws_byte_buf_from_array_~#buf~1.base| 0)) (= aws_byte_buf_from_array_~len |aws_byte_buf_from_array_#in~len|) (= .cse1 |aws_byte_buf_from_array_#in~len|) (= aws_byte_buf_from_array_~bytes.base |aws_byte_buf_from_array_#in~bytes.base|) (or (and (= .cse2 0) .cse6) (< .cse1 (+ 18446744073709551616 (* (div (+ (- 1) .cse1) 18446744073709551616) 18446744073709551616))))))))) [2023-11-29 07:00:53,586 INFO L899 garLoopResultBuilder]: For program point aws_byte_buf_from_arrayEXIT(lines 8203 8216) no Hoare annotation was computed. [2023-11-29 07:00:53,586 INFO L899 garLoopResultBuilder]: For program point L8214-2(line 8214) no Hoare annotation was computed. [2023-11-29 07:00:53,586 INFO L895 garLoopResultBuilder]: At program point L8214-1(line 8214) the Hoare annotation is: (let ((.cse15 (select |#memory_int#4| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse13 (select |#memory_$Pointer$#4.offset| |aws_byte_buf_from_array_~#buf~1.base|))) (let ((.cse6 (select .cse13 8)) (.cse14 (select |#memory_$Pointer$#4.base| |aws_byte_buf_from_array_~#buf~1.base|)) (.cse5 (select .cse15 0))) (let ((.cse0 (= (select .cse15 16) .cse5)) (.cse4 (select .cse14 8)) (.cse1 (= (select .cse14 24) 0)) (.cse2 (= (select .cse13 24) 0)) (.cse3 (= |aws_byte_buf_from_array_#t~ret1055| 1)) (.cse8 (= |aws_byte_buf_from_array_~#buf~1.offset| 0)) (.cse9 (not (= |aws_byte_buf_from_array_~#buf~1.base| 0))) (.cse10 (= aws_byte_buf_from_array_~len |aws_byte_buf_from_array_#in~len|)) (.cse7 (= .cse6 0)) (.cse11 (= .cse5 |aws_byte_buf_from_array_#in~len|)) (.cse12 (= aws_byte_buf_from_array_~bytes.base |aws_byte_buf_from_array_#in~bytes.base|))) (or (and (= aws_byte_buf_from_array_~bytes.offset |aws_byte_buf_from_array_#in~bytes.offset|) .cse0 .cse1 .cse2 .cse3 (= |aws_byte_buf_from_array_#in~bytes.base| .cse4) (< .cse5 (+ 18446744073709551616 (* (div (+ (- 1) .cse5) 18446744073709551616) 18446744073709551616))) (or (= .cse6 |aws_byte_buf_from_array_#in~bytes.offset|) .cse7) .cse8 .cse9 .cse10 .cse11 .cse12) (= |aws_byte_buf_from_array_#in~bytes.base| 0) (and .cse0 (= .cse4 0) .cse1 .cse2 .cse3 .cse8 (<= .cse5 (* (div .cse5 18446744073709551616) 18446744073709551616)) .cse9 .cse10 .cse7 .cse11 .cse12))))) [2023-11-29 07:00:53,586 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-29 07:00:53,586 INFO L899 garLoopResultBuilder]: For program point L7106-1(line 7106) no Hoare annotation was computed. [2023-11-29 07:00:53,586 INFO L899 garLoopResultBuilder]: For program point L8962-1(line 8962) no Hoare annotation was computed. [2023-11-29 07:00:53,586 INFO L899 garLoopResultBuilder]: For program point L7100-1(lines 7099 7112) no Hoare annotation was computed. [2023-11-29 07:00:53,587 INFO L895 garLoopResultBuilder]: At program point L7100(line 7100) the Hoare annotation is: (let ((.cse11 (select |#memory_int#4| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse7 (select |#memory_$Pointer$#4.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse0 (select .cse7 8)) (.cse5 (select .cse11 0)) (.cse4 (select .cse11 16)) (.cse8 (select |#memory_$Pointer$#4.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (and (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_82| Int)) (let ((.cse1 (select (select |#memory_$Pointer$#4.base| |v_aws_byte_buf_from_array_~#buf~1.base_82|) 8))) (and (= .cse0 .cse1) (not (= .cse1 0))))) (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| |ULTIMATE.start_assert_bytes_match_~a#1.offset|) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_81| Int)) (let ((.cse6 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_81|))) (let ((.cse3 (select .cse6 16)) (.cse2 (select .cse6 0))) (and (= .cse2 .cse3) (= .cse3 .cse4) (= .cse2 .cse5))))) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= (select .cse7 24) 0) (= (select .cse8 24) 0) (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_62| Int)) (let ((.cse9 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_62|))) (let ((.cse10 (select .cse9 0))) (and (= (select .cse9 16) .cse10) (= .cse10 .cse5) (not (= (mod .cse10 18446744073709551616) 0)))))) (= .cse4 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= (select .cse8 8) 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|)))) [2023-11-29 07:00:53,588 INFO L895 garLoopResultBuilder]: At program point L8971(lines 8971 8973) the Hoare annotation is: (let ((.cse21 (select |#memory_$Pointer$#4.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse20 (select |#memory_int#4| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse22 (select |#memory_$Pointer$#4.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse0 (select .cse22 8)) (.cse2 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1219#1.base| 0)) (.cse8 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse9 (= (select .cse22 24) 0)) (.cse10 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1219#1.offset| 0)) (.cse5 (select .cse20 16)) (.cse11 (= (select .cse21 24) 0)) (.cse14 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse15 (= (select .cse21 8) 0)) (.cse6 (select .cse20 0))) (or (and (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_82| Int)) (let ((.cse1 (select (select |#memory_$Pointer$#4.base| |v_aws_byte_buf_from_array_~#buf~1.base_82|) 8))) (and (= .cse0 .cse1) (not (= .cse1 0))))) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse2 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_81| Int)) (let ((.cse7 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_81|))) (let ((.cse4 (select .cse7 16)) (.cse3 (select .cse7 0))) (and (= .cse3 .cse4) (= .cse4 .cse5) (= .cse3 .cse6))))) .cse8 .cse9 .cse10 .cse11 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_62| Int)) (let ((.cse12 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_62|))) (let ((.cse13 (select .cse12 0))) (and (= (select .cse12 16) .cse13) (= .cse13 .cse6) (not (= (mod .cse13 18446744073709551616) 0)))))) (= .cse5 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) .cse14 .cse15) (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= .cse0 0) .cse2 .cse8 .cse9 .cse10 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_53| Int)) (let ((.cse18 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_53|))) (let ((.cse16 (select .cse18 0)) (.cse17 (select .cse18 16))) (and (= (mod .cse16 18446744073709551616) 0) (= .cse17 .cse5) (= .cse16 .cse17) (= .cse17 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|))))) .cse11 .cse14 .cse15 (exists ((|v_aws_byte_buf_from_array_~#buf~1.offset_35| Int) (|v_aws_byte_buf_from_array_~#buf~1.base_35| Int)) (let ((.cse19 (select (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_35|) |v_aws_byte_buf_from_array_~#buf~1.offset_35|))) (and (= .cse6 .cse19) (= .cse19 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)))))))) [2023-11-29 07:00:53,588 INFO L899 garLoopResultBuilder]: For program point L8971-1(lines 8971 8973) no Hoare annotation was computed. [2023-11-29 07:00:53,588 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-29 07:00:53,589 INFO L895 garLoopResultBuilder]: At program point L8965(line 8965) the Hoare annotation is: (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) [2023-11-29 07:00:53,589 INFO L899 garLoopResultBuilder]: For program point L8965-1(line 8965) no Hoare annotation was computed. [2023-11-29 07:00:53,589 INFO L895 garLoopResultBuilder]: At program point L8969(line 8969) the Hoare annotation is: (let ((.cse21 (select |#memory_int#4| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse16 (select |#memory_$Pointer$#4.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse10 (select .cse21 16)) (.cse9 (select .cse21 0)) (.cse17 (select |#memory_$Pointer$#4.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse0 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1217#1| |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse1 (select .cse17 8)) (.cse3 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_81| Int)) (let ((.cse20 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_81|))) (let ((.cse19 (select .cse20 16)) (.cse18 (select .cse20 0))) (and (= .cse18 .cse19) (= .cse19 .cse10) (= .cse18 .cse9)))))) (.cse4 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse5 (= (select .cse17 24) 0)) (.cse6 (= (select .cse16 24) 0)) (.cse11 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse12 (= (select .cse16 8) 0))) (or (and .cse0 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_82| Int)) (let ((.cse2 (select (select |#memory_$Pointer$#4.base| |v_aws_byte_buf_from_array_~#buf~1.base_82|) 8))) (and (= .cse1 .cse2) (not (= .cse2 0))))) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse1) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse3 .cse4 .cse5 .cse6 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_62| Int)) (let ((.cse7 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_62|))) (let ((.cse8 (select .cse7 0))) (and (= (select .cse7 16) .cse8) (= .cse8 .cse9) (not (= (mod .cse8 18446744073709551616) 0)))))) (= .cse10 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) .cse11 .cse12) (and .cse0 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= .cse1 0) .cse3 .cse4 .cse5 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_53| Int)) (let ((.cse15 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_53|))) (let ((.cse13 (select .cse15 0)) (.cse14 (select .cse15 16))) (and (= (mod .cse13 18446744073709551616) 0) (= .cse14 .cse10) (= .cse13 .cse14) (= .cse14 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|))))) .cse6 .cse11 .cse12))))) [2023-11-29 07:00:53,589 INFO L899 garLoopResultBuilder]: For program point L7107-1(lines 7107 7109) no Hoare annotation was computed. [2023-11-29 07:00:53,589 INFO L899 garLoopResultBuilder]: For program point L8969-1(line 8969) no Hoare annotation was computed. [2023-11-29 07:00:53,589 INFO L895 garLoopResultBuilder]: At program point L7107(lines 7107 7109) the Hoare annotation is: (let ((.cse11 (select |#memory_int#4| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse7 (select |#memory_$Pointer$#4.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse0 (select .cse7 8)) (.cse5 (select .cse11 0)) (.cse4 (select .cse11 16)) (.cse8 (select |#memory_$Pointer$#4.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (and (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_82| Int)) (let ((.cse1 (select (select |#memory_$Pointer$#4.base| |v_aws_byte_buf_from_array_~#buf~1.base_82|) 8))) (and (= .cse0 .cse1) (not (= .cse1 0))))) (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| |ULTIMATE.start_assert_bytes_match_~a#1.offset|) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_81| Int)) (let ((.cse6 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_81|))) (let ((.cse3 (select .cse6 16)) (.cse2 (select .cse6 0))) (and (= .cse2 .cse3) (= .cse3 .cse4) (= .cse2 .cse5))))) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= (select .cse7 24) 0) (= (select .cse8 24) 0) (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_62| Int)) (let ((.cse9 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_62|))) (let ((.cse10 (select .cse9 0))) (and (= (select .cse9 16) .cse10) (= .cse10 .cse5) (not (= (mod .cse10 18446744073709551616) 0)))))) (= .cse4 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= (select .cse8 8) 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|)))) [2023-11-29 07:00:53,590 INFO L899 garLoopResultBuilder]: For program point L7099(lines 7099 7112) no Hoare annotation was computed. [2023-11-29 07:00:53,590 INFO L899 garLoopResultBuilder]: For program point L8974-2(lines 8974 8976) no Hoare annotation was computed. [2023-11-29 07:00:53,590 INFO L895 garLoopResultBuilder]: At program point L8970(line 8970) the Hoare annotation is: (let ((.cse21 (select |#memory_int#4| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse16 (select |#memory_$Pointer$#4.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse10 (select .cse21 16)) (.cse9 (select .cse21 0)) (.cse17 (select |#memory_$Pointer$#4.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse1 (select .cse17 8)) (.cse0 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~mem1218#1| |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)) (.cse3 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_81| Int)) (let ((.cse20 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_81|))) (let ((.cse19 (select .cse20 16)) (.cse18 (select .cse20 0))) (and (= .cse18 .cse19) (= .cse19 .cse10) (= .cse18 .cse9)))))) (.cse4 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse5 (= (select .cse17 24) 0)) (.cse6 (= (select .cse16 24) 0)) (.cse11 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse12 (= (select .cse16 8) 0))) (or (and .cse0 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_82| Int)) (let ((.cse2 (select (select |#memory_$Pointer$#4.base| |v_aws_byte_buf_from_array_~#buf~1.base_82|) 8))) (and (= .cse1 .cse2) (not (= .cse2 0))))) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse1) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse3 .cse4 .cse5 .cse6 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_62| Int)) (let ((.cse7 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_62|))) (let ((.cse8 (select .cse7 0))) (and (= (select .cse7 16) .cse8) (= .cse8 .cse9) (not (= (mod .cse8 18446744073709551616) 0)))))) (= .cse10 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) .cse11 .cse12) (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= .cse1 0) .cse0 .cse3 .cse4 .cse5 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_42| Int)) (let ((.cse14 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_42|))) (let ((.cse13 (select .cse14 0))) (and (= .cse13 (select .cse14 16)) (= (mod .cse13 18446744073709551616) 0) (= .cse13 .cse9))))) .cse6 .cse11 .cse12 (exists ((|v_aws_byte_buf_from_array_~#buf~1.offset_35| Int) (|v_aws_byte_buf_from_array_~#buf~1.base_35| Int)) (let ((.cse15 (select (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_35|) |v_aws_byte_buf_from_array_~#buf~1.offset_35|))) (and (= .cse9 .cse15) (= .cse15 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|))))))))) [2023-11-29 07:00:53,590 INFO L899 garLoopResultBuilder]: For program point L8974(lines 8974 8976) no Hoare annotation was computed. [2023-11-29 07:00:53,590 INFO L895 garLoopResultBuilder]: At program point L7110(line 7110) the Hoare annotation is: (let ((.cse11 (select |#memory_int#4| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse7 (select |#memory_$Pointer$#4.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse0 (select .cse7 8)) (.cse5 (select .cse11 0)) (.cse4 (select .cse11 16)) (.cse8 (select |#memory_$Pointer$#4.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (and (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_82| Int)) (let ((.cse1 (select (select |#memory_$Pointer$#4.base| |v_aws_byte_buf_from_array_~#buf~1.base_82|) 8))) (and (= .cse0 .cse1) (not (= .cse1 0))))) (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| |ULTIMATE.start_assert_bytes_match_~a#1.offset|) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_81| Int)) (let ((.cse6 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_81|))) (let ((.cse3 (select .cse6 16)) (.cse2 (select .cse6 0))) (and (= .cse2 .cse3) (= .cse3 .cse4) (= .cse2 .cse5))))) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= (select .cse7 24) 0) (= |ULTIMATE.start_assert_bytes_match_#t~mem594#1| |ULTIMATE.start_assert_bytes_match_#t~mem593#1|) (= (select .cse8 24) 0) (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_62| Int)) (let ((.cse9 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_62|))) (let ((.cse10 (select .cse9 0))) (and (= (select .cse9 16) .cse10) (= .cse10 .cse5) (not (= (mod .cse10 18446744073709551616) 0)))))) (= .cse4 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= (select .cse8 8) 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|)))) [2023-11-29 07:00:53,591 INFO L902 garLoopResultBuilder]: At program point L8962(line 8962) the Hoare annotation is: true [2023-11-29 07:00:53,591 INFO L899 garLoopResultBuilder]: For program point L8970-1(line 8970) no Hoare annotation was computed. [2023-11-29 07:00:53,591 INFO L895 garLoopResultBuilder]: At program point L7106(line 7106) the Hoare annotation is: (let ((.cse11 (select |#memory_int#4| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse7 (select |#memory_$Pointer$#4.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse0 (select .cse7 8)) (.cse5 (select .cse11 0)) (.cse4 (select .cse11 16)) (.cse8 (select |#memory_$Pointer$#4.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (and (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_82| Int)) (let ((.cse1 (select (select |#memory_$Pointer$#4.base| |v_aws_byte_buf_from_array_~#buf~1.base_82|) 8))) (and (= .cse0 .cse1) (not (= .cse1 0))))) (= |ULTIMATE.start_assert_bytes_match_~b#1.offset| |ULTIMATE.start_assert_bytes_match_~a#1.offset|) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_81| Int)) (let ((.cse6 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_81|))) (let ((.cse3 (select .cse6 16)) (.cse2 (select .cse6 0))) (and (= .cse2 .cse3) (= .cse3 .cse4) (= .cse2 .cse5))))) (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0)) (= (select .cse7 24) 0) (= (select .cse8 24) 0) (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_62| Int)) (let ((.cse9 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_62|))) (let ((.cse10 (select .cse9 0))) (and (= (select .cse9 16) .cse10) (= .cse10 .cse5) (not (= (mod .cse10 18446744073709551616) 0)))))) (= .cse4 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0) (= (select .cse8 8) 0) (= |ULTIMATE.start_assert_bytes_match_~b#1.base| |ULTIMATE.start_assert_bytes_match_~a#1.base|)))) [2023-11-29 07:00:53,591 INFO L895 garLoopResultBuilder]: At program point L8968(line 8968) the Hoare annotation is: (let ((.cse15 (select |#memory_int#4| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse16 (select |#memory_$Pointer$#4.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse17 (select |#memory_$Pointer$#4.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse0 (select .cse17 8)) (.cse1 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse2 (= (select .cse17 24) 0)) (.cse8 (= (select .cse16 24) 0)) (.cse6 (select .cse15 16)) (.cse9 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse10 (= (select .cse16 8) 0)) (.cse3 (select .cse15 0))) (or (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= .cse0 0) .cse1 .cse2 (= .cse3 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_53| Int)) (let ((.cse7 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_53|))) (let ((.cse4 (select .cse7 0)) (.cse5 (select .cse7 16))) (and (= (mod .cse4 18446744073709551616) 0) (= .cse5 .cse6) (= .cse4 .cse5) (= .cse5 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|))))) .cse8 .cse9 .cse10) (and (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_82| Int)) (let ((.cse11 (select (select |#memory_$Pointer$#4.base| |v_aws_byte_buf_from_array_~#buf~1.base_82|) 8))) (and (= .cse0 .cse11) (not (= .cse11 0))))) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse1 .cse2 .cse8 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_62| Int)) (let ((.cse12 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_62|))) (let ((.cse13 (select .cse12 0))) (and (= (select .cse12 16) .cse13) (= .cse13 .cse3) (not (= (mod .cse13 18446744073709551616) 0)))))) (= .cse6 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) .cse9 .cse10 (exists ((|v_aws_byte_buf_from_array_~#buf~1.offset_35| Int) (|v_aws_byte_buf_from_array_~#buf~1.base_35| Int)) (let ((.cse14 (select (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_35|) |v_aws_byte_buf_from_array_~#buf~1.offset_35|))) (and (= .cse3 .cse14) (= .cse14 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|)))))))) [2023-11-29 07:00:53,592 INFO L895 garLoopResultBuilder]: At program point L8968-1(line 8968) the Hoare annotation is: (let ((.cse21 (select |#memory_int#4| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse16 (select |#memory_$Pointer$#4.offset| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|)) (.cse6 (select .cse21 16)) (.cse15 (select .cse21 0)) (.cse17 (select |#memory_$Pointer$#4.base| |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base|))) (let ((.cse0 (select .cse17 8)) (.cse1 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_81| Int)) (let ((.cse20 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_81|))) (let ((.cse19 (select .cse20 16)) (.cse18 (select .cse20 0))) (and (= .cse18 .cse19) (= .cse19 .cse6) (= .cse18 .cse15)))))) (.cse2 (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.base| 0))) (.cse3 (= (select .cse17 24) 0)) (.cse8 (= (select .cse16 24) 0)) (.cse9 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_#t~ret1216#1| 1)) (.cse10 (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~#buf~3#1.offset| 0)) (.cse11 (= (select .cse16 8) 0))) (or (and (not (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| 0)) (= .cse0 0) .cse1 .cse2 .cse3 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_53| Int)) (let ((.cse7 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_53|))) (let ((.cse4 (select .cse7 0)) (.cse5 (select .cse7 16))) (and (= (mod .cse4 18446744073709551616) 0) (= .cse5 .cse6) (= .cse4 .cse5) (= .cse5 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|))))) .cse8 .cse9 .cse10 .cse11) (and (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_82| Int)) (let ((.cse12 (select (select |#memory_$Pointer$#4.base| |v_aws_byte_buf_from_array_~#buf~1.base_82|) 8))) (and (= .cse0 .cse12) (not (= .cse12 0))))) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.base| .cse0) (= |ULTIMATE.start_aws_byte_buf_from_array_harness_~array~0#1.offset| 0) .cse1 .cse2 .cse3 .cse8 (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_62| Int)) (let ((.cse13 (select |#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_62|))) (let ((.cse14 (select .cse13 0))) (and (= (select .cse13 16) .cse14) (= .cse14 .cse15) (not (= (mod .cse14 18446744073709551616) 0)))))) .cse9 (= .cse6 |ULTIMATE.start_aws_byte_buf_from_array_harness_~length~2#1|) .cse10 .cse11))))) [2023-11-29 07:00:53,592 INFO L899 garLoopResultBuilder]: For program point L8968-2(line 8968) no Hoare annotation was computed. [2023-11-29 07:00:53,592 INFO L899 garLoopResultBuilder]: For program point L7110-1(line 7110) no Hoare annotation was computed. [2023-11-29 07:00:53,592 INFO L899 garLoopResultBuilder]: For program point L223(line 223) no Hoare annotation was computed. [2023-11-29 07:00:53,592 INFO L899 garLoopResultBuilder]: For program point L223-1(line 223) no Hoare annotation was computed. [2023-11-29 07:00:53,592 INFO L899 garLoopResultBuilder]: For program point L223-3(lines 222 224) no Hoare annotation was computed. [2023-11-29 07:00:53,592 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 222 224) no Hoare annotation was computed. [2023-11-29 07:00:53,592 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 222 224) the Hoare annotation is: true [2023-11-29 07:00:53,592 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2023-11-29 07:00:53,594 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:00:53,596 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 07:00:53,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:00:53 BoogieIcfgContainer [2023-11-29 07:00:53,599 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 07:00:53,599 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 07:00:53,599 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 07:00:53,599 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 07:00:53,600 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:56:52" (3/4) ... [2023-11-29 07:00:53,601 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 07:00:53,604 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure bounded_malloc [2023-11-29 07:00:53,604 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_from_array [2023-11-29 07:00:53,604 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure nondet_uint64_t [2023-11-29 07:00:53,604 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure aws_byte_buf_is_valid [2023-11-29 07:00:53,604 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-29 07:00:53,604 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-29 07:00:53,620 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 123 nodes and edges [2023-11-29 07:00:53,621 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 58 nodes and edges [2023-11-29 07:00:53,623 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2023-11-29 07:00:53,624 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-29 07:00:53,626 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-29 07:00:53,627 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 07:00:53,629 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 07:00:53,630 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 07:00:54,238 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 07:00:54,239 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 07:00:54,239 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 07:00:54,239 INFO L158 Benchmark]: Toolchain (without parser) took 246299.38ms. Allocated memory was 161.5MB in the beginning and 748.7MB in the end (delta: 587.2MB). Free memory was 121.3MB in the beginning and 605.4MB in the end (delta: -484.1MB). Peak memory consumption was 432.3MB. Max. memory is 16.1GB. [2023-11-29 07:00:54,239 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 119.5MB. Free memory is still 94.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:00:54,240 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2629.25ms. Allocated memory is still 161.5MB. Free memory was 121.3MB in the beginning and 76.4MB in the end (delta: 44.9MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. [2023-11-29 07:00:54,240 INFO L158 Benchmark]: Boogie Procedure Inliner took 157.04ms. Allocated memory is still 161.5MB. Free memory was 76.4MB in the beginning and 65.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 07:00:54,240 INFO L158 Benchmark]: Boogie Preprocessor took 172.80ms. Allocated memory is still 161.5MB. Free memory was 65.1MB in the beginning and 99.2MB in the end (delta: -34.1MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. [2023-11-29 07:00:54,241 INFO L158 Benchmark]: RCFGBuilder took 1486.19ms. Allocated memory was 161.5MB in the beginning and 222.3MB in the end (delta: 60.8MB). Free memory was 99.2MB in the beginning and 144.0MB in the end (delta: -44.8MB). Peak memory consumption was 82.8MB. Max. memory is 16.1GB. [2023-11-29 07:00:54,241 INFO L158 Benchmark]: TraceAbstraction took 241208.40ms. Allocated memory was 222.3MB in the beginning and 622.9MB in the end (delta: 400.6MB). Free memory was 144.0MB in the beginning and 234.3MB in the end (delta: -90.3MB). Peak memory consumption was 379.0MB. Max. memory is 16.1GB. [2023-11-29 07:00:54,241 INFO L158 Benchmark]: Witness Printer took 639.72ms. Allocated memory was 622.9MB in the beginning and 748.7MB in the end (delta: 125.8MB). Free memory was 234.3MB in the beginning and 605.4MB in the end (delta: -371.1MB). Peak memory consumption was 80.9MB. Max. memory is 16.1GB. [2023-11-29 07:00:54,242 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 119.5MB. Free memory is still 94.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2629.25ms. Allocated memory is still 161.5MB. Free memory was 121.3MB in the beginning and 76.4MB in the end (delta: 44.9MB). Peak memory consumption was 109.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 157.04ms. Allocated memory is still 161.5MB. Free memory was 76.4MB in the beginning and 65.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 172.80ms. Allocated memory is still 161.5MB. Free memory was 65.1MB in the beginning and 99.2MB in the end (delta: -34.1MB). Peak memory consumption was 22.3MB. Max. memory is 16.1GB. * RCFGBuilder took 1486.19ms. Allocated memory was 161.5MB in the beginning and 222.3MB in the end (delta: 60.8MB). Free memory was 99.2MB in the beginning and 144.0MB in the end (delta: -44.8MB). Peak memory consumption was 82.8MB. Max. memory is 16.1GB. * TraceAbstraction took 241208.40ms. Allocated memory was 222.3MB in the beginning and 622.9MB in the end (delta: 400.6MB). Free memory was 144.0MB in the beginning and 234.3MB in the end (delta: -90.3MB). Peak memory consumption was 379.0MB. Max. memory is 16.1GB. * Witness Printer took 639.72ms. Allocated memory was 622.9MB in the beginning and 748.7MB in the end (delta: 125.8MB). Free memory was 234.3MB in the beginning and 605.4MB in the end (delta: -371.1MB). Peak memory consumption was 80.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 8269]: Unsoundness Warning Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] - GenericResultAtLocation [Line: 8755]: Unsoundness Warning Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 223]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 241.2s, OverallIterations: 29, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 151.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 282 mSolverCounterUnknown, 5274 SdHoareTripleChecker+Valid, 131.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5075 mSDsluCounter, 6621 SdHoareTripleChecker+Invalid, 128.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5631 mSDsCounter, 1254 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27065 IncrementalHoareTripleChecker+Invalid, 28601 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1254 mSolverCounterUnsat, 990 mSDtfsCounter, 27065 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2454 GetRequests, 1471 SyntacticMatches, 53 SemanticMatches, 930 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9758 ImplicationChecksByTransitivity, 39.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=182occurred in iteration=19, InterpolantAutomatonStates: 516, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 29 MinimizatonAttempts, 512 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 195 PreInvPairs, 213 NumberOfFragments, 2200 HoareAnnotationTreeSize, 195 FomulaSimplifications, 14310 FormulaSimplificationTreeSizeReduction, 1.5s HoareSimplificationTime, 21 FomulaSimplificationsInter, 25303 FormulaSimplificationTreeSizeReductionInter, 4.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 8.4s SatisfiabilityAnalysisTime, 68.0s InterpolantComputationTime, 2475 NumberOfCodeBlocks, 2475 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 2803 ConstructedInterpolants, 388 QuantifiedInterpolants, 28871 SizeOfPredicates, 185 NumberOfNonLiveVariables, 34983 ConjunctsInSsa, 567 ConjunctsInUnsatCore, 49 InterpolantComputations, 19 PerfectInterpolantSequences, 802/1088 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 07:00:54,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47f047cc-aae4-4c58-85eb-06747cb0e1a3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE