./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness_negated.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_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/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_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/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_e4ee85e3-dac1-4655-9579-00f48b98adfe/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 6dc5bd60f4d96fc7f9806283fae01bdd9c221bb414825650ea3065ab8880bb4d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:32:21,029 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:32:21,092 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 01:32:21,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:32:21,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:32:21,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:32:21,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:32:21,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:32:21,120 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:32:21,120 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:32:21,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:32:21,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:32:21,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:32:21,123 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:32:21,123 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:32:21,124 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:32:21,124 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:32:21,124 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:32:21,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:32:21,125 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:32:21,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:32:21,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:32:21,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:32:21,127 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:32:21,127 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:32:21,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:32:21,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:32:21,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:32:21,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:32:21,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:32:21,130 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:32:21,130 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:32:21,130 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:32:21,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:32:21,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:32:21,131 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:32:21,131 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:32:21,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:32:21,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:32:21,131 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_e4ee85e3-dac1-4655-9579-00f48b98adfe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6dc5bd60f4d96fc7f9806283fae01bdd9c221bb414825650ea3065ab8880bb4d [2023-11-29 01:32:21,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:32:21,383 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:32:21,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:32:21,386 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:32:21,387 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:32:21,388 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness_negated.i [2023-11-29 01:32:24,247 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:32:24,687 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:32:24,688 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness_negated.i [2023-11-29 01:32:24,729 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/data/ee2131169/978fd3f1120b4ebc8b1cc8992ef966bb/FLAG5677814ab [2023-11-29 01:32:24,744 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/data/ee2131169/978fd3f1120b4ebc8b1cc8992ef966bb [2023-11-29 01:32:24,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:32:24,748 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:32:24,749 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:32:24,749 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:32:24,754 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:32:24,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:32:24" (1/1) ... [2023-11-29 01:32:24,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@721adb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:24, skipping insertion in model container [2023-11-29 01:32:24,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:32:24" (1/1) ... [2023-11-29 01:32:24,855 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:32:25,101 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_e4ee85e3-dac1-4655-9579-00f48b98adfe/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness_negated.i[4499,4512] [2023-11-29 01:32:25,109 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_e4ee85e3-dac1-4655-9579-00f48b98adfe/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness_negated.i[4559,4572] [2023-11-29 01:32:25,844 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:25,844 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:25,845 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:25,846 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:25,847 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:25,859 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:25,859 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:25,862 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:25,862 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,277 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 01:32:26,279 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 01:32:26,280 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 01:32:26,281 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 01:32:26,283 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 01:32:26,283 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 01:32:26,284 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 01:32:26,285 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 01:32:26,286 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 01:32:26,287 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 01:32:26,574 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,575 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:32:26,684 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:32:26,696 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_e4ee85e3-dac1-4655-9579-00f48b98adfe/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness_negated.i[4499,4512] [2023-11-29 01:32:26,696 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_e4ee85e3-dac1-4655-9579-00f48b98adfe/sv-benchmarks/c/aws-c-common/aws_byte_cursor_read_be32_harness_negated.i[4559,4572] [2023-11-29 01:32:26,731 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,731 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,731 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,732 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,732 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,739 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,739 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,740 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,741 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,776 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 01:32:26,777 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 01:32:26,778 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 01:32:26,778 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 01:32:26,779 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 01:32:26,779 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 01:32:26,780 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 01:32:26,780 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 01:32:26,781 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 01:32:26,781 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 01:32:26,845 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2023-11-29 01:32:26,847 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,847 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 01:32:26,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8723-8734] [2023-11-29 01:32:26,872 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:32:27,134 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,135 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,135 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,135 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,135 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,135 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,135 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,135 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,136 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,136 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,136 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,136 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,136 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,136 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,136 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,137 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,137 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,137 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 01:32:27,143 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:32:27,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27 WrapperNode [2023-11-29 01:32:27,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:32:27,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:32:27,144 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:32:27,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:32:27,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (1/1) ... [2023-11-29 01:32:27,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (1/1) ... [2023-11-29 01:32:27,321 INFO L138 Inliner]: procedures = 690, calls = 2648, calls flagged for inlining = 62, calls inlined = 11, statements flattened = 1022 [2023-11-29 01:32:27,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:32:27,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:32:27,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:32:27,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:32:27,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (1/1) ... [2023-11-29 01:32:27,334 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (1/1) ... [2023-11-29 01:32:27,342 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (1/1) ... [2023-11-29 01:32:27,418 INFO L175 MemorySlicer]: Split 567 memory accesses to 9 slices as follows [246, 2, 6, 37, 5, 256, 4, 8, 3]. 45 percent of accesses are in the largest equivalence class. The 508 initializations are split as follows [236, 2, 0, 2, 5, 256, 2, 2, 3]. The 15 writes are split as follows [4, 0, 2, 9, 0, 0, 0, 0, 0]. [2023-11-29 01:32:27,418 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (1/1) ... [2023-11-29 01:32:27,418 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (1/1) ... [2023-11-29 01:32:27,459 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (1/1) ... [2023-11-29 01:32:27,465 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (1/1) ... [2023-11-29 01:32:27,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (1/1) ... [2023-11-29 01:32:27,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (1/1) ... [2023-11-29 01:32:27,504 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:32:27,505 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:32:27,505 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:32:27,506 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:32:27,506 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (1/1) ... [2023-11-29 01:32:27,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:32:27,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:27,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:32:27,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:32:27,573 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_read [2023-11-29 01:32:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_read [2023-11-29 01:32:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-29 01:32:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-29 01:32:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure ntohl [2023-11-29 01:32:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:32:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-29 01:32:27,574 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-29 01:32:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#0 [2023-11-29 01:32:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#1 [2023-11-29 01:32:27,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#2 [2023-11-29 01:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#3 [2023-11-29 01:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#4 [2023-11-29 01:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#5 [2023-11-29 01:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#6 [2023-11-29 01:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#7 [2023-11-29 01:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#8 [2023-11-29 01:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-29 01:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-29 01:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-29 01:32:27,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-29 01:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-29 01:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-29 01:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-29 01:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2023-11-29 01:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#8 [2023-11-29 01:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-29 01:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-29 01:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-29 01:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-29 01:32:27,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-29 01:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-29 01:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-29 01:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-29 01:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2023-11-29 01:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 01:32:27,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 01:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 01:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-29 01:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-29 01:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2023-11-29 01:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2023-11-29 01:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2023-11-29 01:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2023-11-29 01:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2023-11-29 01:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2023-11-29 01:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2023-11-29 01:32:27,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2023-11-29 01:32:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#8 [2023-11-29 01:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2023-11-29 01:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2023-11-29 01:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2023-11-29 01:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2023-11-29 01:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2023-11-29 01:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2023-11-29 01:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2023-11-29 01:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2023-11-29 01:32:27,579 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#8 [2023-11-29 01:32:27,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 01:32:27,580 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 01:32:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:32:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:32:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:32:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:32:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:32:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:32:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 01:32:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 01:32:27,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-29 01:32:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-29 01:32:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-29 01:32:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure aws_ntoh32 [2023-11-29 01:32:27,581 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_ntoh32 [2023-11-29 01:32:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:32:27,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:32:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-29 01:32:27,581 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-29 01:32:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-29 01:32:27,581 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-29 01:32:27,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-29 01:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-29 01:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-29 01:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-29 01:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-29 01:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-29 01:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-29 01:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2023-11-29 01:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#8 [2023-11-29 01:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-29 01:32:27,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-29 01:32:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-29 01:32:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-29 01:32:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-29 01:32:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-29 01:32:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-29 01:32:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2023-11-29 01:32:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2023-11-29 01:32:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-29 01:32:27,583 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-29 01:32:27,583 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:32:27,583 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 01:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 01:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-29 01:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-29 01:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-29 01:32:27,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 01:32:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 01:32:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 01:32:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 01:32:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 01:32:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 01:32:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-29 01:32:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-29 01:32:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-29 01:32:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-29 01:32:27,585 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-29 01:32:27,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:32:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:32:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:32:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:32:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 01:32:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 01:32:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 01:32:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-29 01:32:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-29 01:32:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#0 [2023-11-29 01:32:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#1 [2023-11-29 01:32:27,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#2 [2023-11-29 01:32:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#3 [2023-11-29 01:32:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#4 [2023-11-29 01:32:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#5 [2023-11-29 01:32:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#6 [2023-11-29 01:32:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#7 [2023-11-29 01:32:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#8 [2023-11-29 01:32:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:32:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:32:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:32:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:32:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 01:32:27,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 01:32:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 01:32:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 01:32:27,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 01:32:27,922 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:32:27,925 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:32:29,743 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:32:29,854 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:32:29,854 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 01:32:29,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:32:29 BoogieIcfgContainer [2023-11-29 01:32:29,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:32:29,858 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:32:29,858 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:32:29,861 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:32:29,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:32:24" (1/3) ... [2023-11-29 01:32:29,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2564961b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:32:29, skipping insertion in model container [2023-11-29 01:32:29,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:32:27" (2/3) ... [2023-11-29 01:32:29,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2564961b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:32:29, skipping insertion in model container [2023-11-29 01:32:29,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:32:29" (3/3) ... [2023-11-29 01:32:29,863 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_read_be32_harness_negated.i [2023-11-29 01:32:29,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:32:29,881 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:32:29,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:32:29,940 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;@44f52c8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:32:29,940 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:32:29,945 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 98 states have (on average 1.346938775510204) internal successors, (132), 99 states have internal predecessors, (132), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-29 01:32:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 01:32:29,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:29,961 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:29,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:29,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:29,966 INFO L85 PathProgramCache]: Analyzing trace with hash -744737353, now seen corresponding path program 1 times [2023-11-29 01:32:29,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:29,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882969] [2023-11-29 01:32:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:29,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:30,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:30,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:30,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:30,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:32:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:32:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:32:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 01:32:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:32:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 01:32:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 01:32:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 01:32:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 01:32:31,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:32:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 01:32:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 01:32:31,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 01:32:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 01:32:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:32:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 01:32:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 01:32:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,196 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-29 01:32:31,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:31,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882969] [2023-11-29 01:32:31,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882969] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:31,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816713991] [2023-11-29 01:32:31,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:31,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:31,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:31,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:31,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:32:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:31,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:32:31,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-29 01:32:31,920 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:32:31,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816713991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:31,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:32:31,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2023-11-29 01:32:31,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055422919] [2023-11-29 01:32:31,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:31,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:32:31,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:31,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:32:31,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:32:31,960 INFO L87 Difference]: Start difference. First operand has 159 states, 98 states have (on average 1.346938775510204) internal successors, (132), 99 states have internal predecessors, (132), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-29 01:32:32,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:32,150 INFO L93 Difference]: Finished difference Result 312 states and 477 transitions. [2023-11-29 01:32:32,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:32:32,153 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 112 [2023-11-29 01:32:32,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:32,163 INFO L225 Difference]: With dead ends: 312 [2023-11-29 01:32:32,163 INFO L226 Difference]: Without dead ends: 157 [2023-11-29 01:32:32,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:32:32,172 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:32,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:32:32,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-29 01:32:32,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2023-11-29 01:32:32,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 97 states have (on average 1.3298969072164948) internal successors, (129), 98 states have internal predecessors, (129), 48 states have call successors, (48), 11 states have call predecessors, (48), 11 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-29 01:32:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 224 transitions. [2023-11-29 01:32:32,231 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 224 transitions. Word has length 112 [2023-11-29 01:32:32,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:32,232 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 224 transitions. [2023-11-29 01:32:32,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-29 01:32:32,233 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 224 transitions. [2023-11-29 01:32:32,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-29 01:32:32,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:32,236 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:32,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:32:32,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:32:32,439 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:32,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:32,439 INFO L85 PathProgramCache]: Analyzing trace with hash -997379219, now seen corresponding path program 1 times [2023-11-29 01:32:32,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:32,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137643557] [2023-11-29 01:32:32,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:32,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:32,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:32,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:32,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:32:32,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:32,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:32:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:32,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:32:32,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:32,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-29 01:32:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-29 01:32:32,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:32,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 01:32:32,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 01:32:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 01:32:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 01:32:33,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:32:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 01:32:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 01:32:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 01:32:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 01:32:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:32:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 01:32:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 01:32:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,117 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-29 01:32:33,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:33,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137643557] [2023-11-29 01:32:33,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137643557] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:33,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721659411] [2023-11-29 01:32:33,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:33,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:33,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:33,120 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:33,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:32:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:33,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:32:33,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:33,884 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-29 01:32:33,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:32:33,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721659411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:33,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:32:33,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 01:32:33,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259291041] [2023-11-29 01:32:33,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:33,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:32:33,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:33,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:32:33,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:32:33,888 INFO L87 Difference]: Start difference. First operand 157 states and 224 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-29 01:32:34,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:34,152 INFO L93 Difference]: Finished difference Result 294 states and 431 transitions. [2023-11-29 01:32:34,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:32:34,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 112 [2023-11-29 01:32:34,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:34,157 INFO L225 Difference]: With dead ends: 294 [2023-11-29 01:32:34,157 INFO L226 Difference]: Without dead ends: 159 [2023-11-29 01:32:34,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:32:34,159 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 46 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:34,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 513 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:32:34,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-29 01:32:34,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-29 01:32:34,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 100 states have internal predecessors, (130), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (55), 47 states have call predecessors, (55), 47 states have call successors, (55) [2023-11-29 01:32:34,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 233 transitions. [2023-11-29 01:32:34,181 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 233 transitions. Word has length 112 [2023-11-29 01:32:34,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:34,182 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 233 transitions. [2023-11-29 01:32:34,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-29 01:32:34,182 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 233 transitions. [2023-11-29 01:32:34,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-29 01:32:34,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:34,186 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:34,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:32:34,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:34,391 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:34,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash -268357016, now seen corresponding path program 1 times [2023-11-29 01:32:34,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:34,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94231296] [2023-11-29 01:32:34,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:34,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:34,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:34,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:34,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:32:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:34,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:32:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:32:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 01:32:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 01:32:35,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 01:32:35,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 01:32:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:32:35,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 01:32:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 01:32:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 01:32:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 01:32:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 01:32:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 01:32:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 01:32:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 01:32:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 01:32:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,183 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-29 01:32:35,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:35,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94231296] [2023-11-29 01:32:35,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94231296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:35,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421861557] [2023-11-29 01:32:35,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:35,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:35,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:35,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:35,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:32:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:35,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 2739 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:32:35,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:35,923 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-29 01:32:35,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:32:35,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421861557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:35,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:32:35,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-29 01:32:35,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012780100] [2023-11-29 01:32:35,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:35,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:32:35,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:35,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:32:35,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:32:35,926 INFO L87 Difference]: Start difference. First operand 159 states and 233 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-29 01:32:36,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:36,360 INFO L93 Difference]: Finished difference Result 280 states and 412 transitions. [2023-11-29 01:32:36,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:32:36,360 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 114 [2023-11-29 01:32:36,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:36,363 INFO L225 Difference]: With dead ends: 280 [2023-11-29 01:32:36,363 INFO L226 Difference]: Without dead ends: 159 [2023-11-29 01:32:36,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:32:36,365 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 45 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:36,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 871 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:32:36,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-29 01:32:36,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-29 01:32:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 98 states have (on average 1.3265306122448979) internal successors, (130), 100 states have internal predecessors, (130), 48 states have call successors, (48), 11 states have call predecessors, (48), 12 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2023-11-29 01:32:36,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 231 transitions. [2023-11-29 01:32:36,385 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 231 transitions. Word has length 114 [2023-11-29 01:32:36,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:36,385 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 231 transitions. [2023-11-29 01:32:36,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2023-11-29 01:32:36,386 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 231 transitions. [2023-11-29 01:32:36,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-29 01:32:36,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:36,388 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:36,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:32:36,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:36,589 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:36,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:36,589 INFO L85 PathProgramCache]: Analyzing trace with hash 188336227, now seen corresponding path program 2 times [2023-11-29 01:32:36,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:36,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877885481] [2023-11-29 01:32:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:36,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:32:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:32:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:32:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 01:32:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 01:32:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 01:32:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 01:32:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:32:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 01:32:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 01:32:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 01:32:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 01:32:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 01:32:37,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:32:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:32:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 01:32:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:32:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-11-29 01:32:37,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:37,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877885481] [2023-11-29 01:32:37,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877885481] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:37,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734308997] [2023-11-29 01:32:37,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:32:37,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:37,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:37,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:37,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:32:38,005 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 01:32:38,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:32:38,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 2291 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:32:38,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-29 01:32:38,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:32:38,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734308997] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:38,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:32:38,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-29 01:32:38,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158758159] [2023-11-29 01:32:38,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:38,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:32:38,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:38,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:32:38,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:32:38,104 INFO L87 Difference]: Start difference. First operand 159 states and 231 transitions. Second operand has 7 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-29 01:32:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:38,412 INFO L93 Difference]: Finished difference Result 167 states and 239 transitions. [2023-11-29 01:32:38,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:32:38,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 116 [2023-11-29 01:32:38,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:38,415 INFO L225 Difference]: With dead ends: 167 [2023-11-29 01:32:38,415 INFO L226 Difference]: Without dead ends: 165 [2023-11-29 01:32:38,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:32:38,417 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 5 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1229 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:38,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1229 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:32:38,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-29 01:32:38,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2023-11-29 01:32:38,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 101 states have (on average 1.316831683168317) internal successors, (133), 103 states have internal predecessors, (133), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (54), 48 states have call predecessors, (54), 48 states have call successors, (54) [2023-11-29 01:32:38,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 236 transitions. [2023-11-29 01:32:38,434 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 236 transitions. Word has length 116 [2023-11-29 01:32:38,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:38,435 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 236 transitions. [2023-11-29 01:32:38,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-29 01:32:38,436 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 236 transitions. [2023-11-29 01:32:38,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 01:32:38,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:38,438 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:38,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 01:32:38,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-29 01:32:38,638 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:38,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:38,639 INFO L85 PathProgramCache]: Analyzing trace with hash 192599070, now seen corresponding path program 3 times [2023-11-29 01:32:38,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:38,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729753737] [2023-11-29 01:32:38,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:38,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:32:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:32:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:32:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 01:32:39,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 01:32:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 01:32:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 01:32:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:32:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 01:32:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 01:32:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 01:32:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 01:32:39,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 01:32:39,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:32:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:32:39,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-29 01:32:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:32:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-29 01:32:39,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:39,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729753737] [2023-11-29 01:32:39,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729753737] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:39,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840556162] [2023-11-29 01:32:39,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:32:39,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:39,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:39,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:39,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:32:40,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:32:40,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:32:40,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 2397 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 01:32:40,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:40,111 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-29 01:32:40,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:32:40,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840556162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:40,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:32:40,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-29 01:32:40,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317846600] [2023-11-29 01:32:40,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:40,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:32:40,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:40,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:32:40,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:32:40,113 INFO L87 Difference]: Start difference. First operand 164 states and 236 transitions. Second operand has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-29 01:32:40,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:40,534 INFO L93 Difference]: Finished difference Result 279 states and 400 transitions. [2023-11-29 01:32:40,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:32:40,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 118 [2023-11-29 01:32:40,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:40,537 INFO L225 Difference]: With dead ends: 279 [2023-11-29 01:32:40,537 INFO L226 Difference]: Without dead ends: 164 [2023-11-29 01:32:40,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:32:40,538 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 2 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1154 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:40,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1154 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:32:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-29 01:32:40,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-29 01:32:40,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 101 states have (on average 1.316831683168317) internal successors, (133), 103 states have internal predecessors, (133), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (53), 48 states have call predecessors, (53), 48 states have call successors, (53) [2023-11-29 01:32:40,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 235 transitions. [2023-11-29 01:32:40,548 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 235 transitions. Word has length 118 [2023-11-29 01:32:40,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:40,549 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 235 transitions. [2023-11-29 01:32:40,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-29 01:32:40,549 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 235 transitions. [2023-11-29 01:32:40,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 01:32:40,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:40,550 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:40,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:32:40,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:40,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:40,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:40,751 INFO L85 PathProgramCache]: Analyzing trace with hash -942184957, now seen corresponding path program 4 times [2023-11-29 01:32:40,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:40,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076667035] [2023-11-29 01:32:40,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:40,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:41,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:32:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:32:41,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:32:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 01:32:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 01:32:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 01:32:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 01:32:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:32:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 01:32:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 01:32:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 01:32:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 01:32:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 01:32:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:32:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:32:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 01:32:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 01:32:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-29 01:32:41,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:41,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076667035] [2023-11-29 01:32:41,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076667035] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:41,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010889258] [2023-11-29 01:32:41,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:32:41,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:41,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:41,498 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:41,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:32:42,069 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:32:42,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:32:42,078 INFO L262 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:32:42,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-29 01:32:42,210 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:32:42,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010889258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:42,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:32:42,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-29 01:32:42,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641050262] [2023-11-29 01:32:42,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:42,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:32:42,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:42,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:32:42,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:32:42,213 INFO L87 Difference]: Start difference. First operand 164 states and 235 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-29 01:32:42,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:42,649 INFO L93 Difference]: Finished difference Result 284 states and 407 transitions. [2023-11-29 01:32:42,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:32:42,650 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 120 [2023-11-29 01:32:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:42,652 INFO L225 Difference]: With dead ends: 284 [2023-11-29 01:32:42,652 INFO L226 Difference]: Without dead ends: 164 [2023-11-29 01:32:42,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:32:42,653 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 137 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:42,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 982 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:32:42,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-29 01:32:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-11-29 01:32:42,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 101 states have (on average 1.316831683168317) internal successors, (133), 103 states have internal predecessors, (133), 49 states have call successors, (49), 12 states have call predecessors, (49), 13 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-29 01:32:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 232 transitions. [2023-11-29 01:32:42,667 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 232 transitions. Word has length 120 [2023-11-29 01:32:42,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:42,667 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 232 transitions. [2023-11-29 01:32:42,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 5 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-29 01:32:42,668 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 232 transitions. [2023-11-29 01:32:42,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 01:32:42,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:42,670 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:42,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:32:42,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:32:42,871 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:42,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:42,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1181021314, now seen corresponding path program 1 times [2023-11-29 01:32:42,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:42,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276464793] [2023-11-29 01:32:42,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:42,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:43,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:32:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:32:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:32:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 01:32:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 01:32:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 01:32:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 01:32:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:32:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 01:32:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-29 01:32:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-29 01:32:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 01:32:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 01:32:43,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:32:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 01:32:43,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 01:32:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 01:32:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-29 01:32:43,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:43,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276464793] [2023-11-29 01:32:43,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276464793] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:32:43,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:32:43,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:32:43,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430476390] [2023-11-29 01:32:43,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:43,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:32:43,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:43,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:32:43,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:32:43,736 INFO L87 Difference]: Start difference. First operand 164 states and 232 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-29 01:32:45,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:45,044 INFO L93 Difference]: Finished difference Result 309 states and 440 transitions. [2023-11-29 01:32:45,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:32:45,045 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 122 [2023-11-29 01:32:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:45,047 INFO L225 Difference]: With dead ends: 309 [2023-11-29 01:32:45,047 INFO L226 Difference]: Without dead ends: 179 [2023-11-29 01:32:45,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:32:45,049 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 145 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:45,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 510 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:32:45,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-29 01:32:45,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 167. [2023-11-29 01:32:45,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 103 states have (on average 1.3300970873786409) internal successors, (137), 106 states have internal predecessors, (137), 49 states have call successors, (49), 12 states have call predecessors, (49), 14 states have return successors, (51), 48 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-29 01:32:45,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 237 transitions. [2023-11-29 01:32:45,062 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 237 transitions. Word has length 122 [2023-11-29 01:32:45,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:45,063 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 237 transitions. [2023-11-29 01:32:45,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-29 01:32:45,063 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 237 transitions. [2023-11-29 01:32:45,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 01:32:45,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:45,064 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:45,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 01:32:45,065 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:45,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash 299919211, now seen corresponding path program 1 times [2023-11-29 01:32:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043043812] [2023-11-29 01:32:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:32:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:32:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:32:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 01:32:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 01:32:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 01:32:46,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 01:32:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:32:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-29 01:32:46,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 01:32:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 01:32:46,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 01:32:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 01:32:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 01:32:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 01:32:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:32:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 01:32:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:46,899 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2023-11-29 01:32:46,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:46,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043043812] [2023-11-29 01:32:46,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043043812] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:46,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678184430] [2023-11-29 01:32:46,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:46,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:46,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:46,901 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:46,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:32:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:47,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 2890 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:32:47,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:47,633 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 104 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-29 01:32:47,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:32:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-29 01:32:47,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678184430] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:47,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:32:47,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13, 5] total 17 [2023-11-29 01:32:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187928842] [2023-11-29 01:32:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:32:47,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:32:47,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:47,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:32:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:32:47,747 INFO L87 Difference]: Start difference. First operand 167 states and 237 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-29 01:32:48,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:48,015 INFO L93 Difference]: Finished difference Result 306 states and 440 transitions. [2023-11-29 01:32:48,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:32:48,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 123 [2023-11-29 01:32:48,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:48,018 INFO L225 Difference]: With dead ends: 306 [2023-11-29 01:32:48,018 INFO L226 Difference]: Without dead ends: 172 [2023-11-29 01:32:48,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 277 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:32:48,020 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 4 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:48,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 413 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:32:48,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-29 01:32:48,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 170. [2023-11-29 01:32:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 106 states have (on average 1.320754716981132) internal successors, (140), 108 states have internal predecessors, (140), 49 states have call successors, (49), 13 states have call predecessors, (49), 14 states have return successors, (51), 48 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-29 01:32:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 240 transitions. [2023-11-29 01:32:48,036 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 240 transitions. Word has length 123 [2023-11-29 01:32:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:48,036 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 240 transitions. [2023-11-29 01:32:48,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-29 01:32:48,037 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 240 transitions. [2023-11-29 01:32:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 01:32:48,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:48,038 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:48,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:32:48,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:48,239 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:48,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:48,239 INFO L85 PathProgramCache]: Analyzing trace with hash 324540256, now seen corresponding path program 1 times [2023-11-29 01:32:48,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:48,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564188254] [2023-11-29 01:32:48,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:48,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:32:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-29 01:32:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-29 01:32:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 01:32:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-29 01:32:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-29 01:32:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 01:32:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-29 01:32:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 01:32:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-29 01:32:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 01:32:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 01:32:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:32:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 01:32:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 01:32:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 01:32:49,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 01:32:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 01:32:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-29 01:32:49,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:32:49,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564188254] [2023-11-29 01:32:49,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564188254] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:32:49,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758304797] [2023-11-29 01:32:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:49,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:49,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:32:49,927 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:32:49,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:32:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:32:50,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 2913 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-29 01:32:50,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:32:51,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:32:51,050 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 22 [2023-11-29 01:32:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 80 proven. 4 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 01:32:51,134 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:32:51,961 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 01:32:51,961 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 20 treesize of output 19 [2023-11-29 01:32:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-11-29 01:32:51,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758304797] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:32:51,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:32:51,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16, 16] total 38 [2023-11-29 01:32:51,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878787183] [2023-11-29 01:32:51,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:32:51,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 01:32:51,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:32:51,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 01:32:51,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1293, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 01:32:51,982 INFO L87 Difference]: Start difference. First operand 170 states and 240 transitions. Second operand has 38 states, 30 states have (on average 3.3) internal successors, (99), 27 states have internal predecessors, (99), 11 states have call successors, (56), 7 states have call predecessors, (56), 9 states have return successors, (53), 12 states have call predecessors, (53), 10 states have call successors, (53) [2023-11-29 01:32:59,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:32:59,199 INFO L93 Difference]: Finished difference Result 361 states and 517 transitions. [2023-11-29 01:32:59,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 01:32:59,200 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 30 states have (on average 3.3) internal successors, (99), 27 states have internal predecessors, (99), 11 states have call successors, (56), 7 states have call predecessors, (56), 9 states have return successors, (53), 12 states have call predecessors, (53), 10 states have call successors, (53) Word has length 124 [2023-11-29 01:32:59,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:32:59,202 INFO L225 Difference]: With dead ends: 361 [2023-11-29 01:32:59,203 INFO L226 Difference]: Without dead ends: 188 [2023-11-29 01:32:59,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=329, Invalid=3331, Unknown=0, NotChecked=0, Total=3660 [2023-11-29 01:32:59,206 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 222 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 3410 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 2812 SdHoareTripleChecker+Invalid, 3565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 3410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:32:59,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 2812 Invalid, 3565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 3410 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-11-29 01:32:59,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-29 01:32:59,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 176. [2023-11-29 01:32:59,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 110 states have (on average 1.3) internal successors, (143), 112 states have internal predecessors, (143), 50 states have call successors, (50), 14 states have call predecessors, (50), 15 states have return successors, (60), 49 states have call predecessors, (60), 48 states have call successors, (60) [2023-11-29 01:32:59,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 253 transitions. [2023-11-29 01:32:59,228 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 253 transitions. Word has length 124 [2023-11-29 01:32:59,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:32:59,228 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 253 transitions. [2023-11-29 01:32:59,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 30 states have (on average 3.3) internal successors, (99), 27 states have internal predecessors, (99), 11 states have call successors, (56), 7 states have call predecessors, (56), 9 states have return successors, (53), 12 states have call predecessors, (53), 10 states have call successors, (53) [2023-11-29 01:32:59,229 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 253 transitions. [2023-11-29 01:32:59,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-29 01:32:59,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:32:59,231 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:32:59,239 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:32:59,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:32:59,431 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:32:59,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:32:59,432 INFO L85 PathProgramCache]: Analyzing trace with hash -2004475878, now seen corresponding path program 1 times [2023-11-29 01:32:59,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:32:59,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504951557] [2023-11-29 01:32:59,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:32:59,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:32:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:33:00,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:33:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:33:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:33:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:33:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:33:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-29 01:33:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-29 01:33:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:33:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-29 01:33:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 01:33:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 01:33:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 01:33:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 01:33:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 01:33:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 01:33:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 01:33:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-29 01:33:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-29 01:33:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 01:33:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 01:33:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-29 01:33:00,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:00,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504951557] [2023-11-29 01:33:00,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504951557] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:33:00,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593297794] [2023-11-29 01:33:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:00,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:00,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:00,406 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:00,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:33:01,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:01,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 2959 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 01:33:01,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-29 01:33:01,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:33:01,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593297794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:33:01,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:33:01,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2023-11-29 01:33:01,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954348845] [2023-11-29 01:33:01,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:33:01,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:33:01,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:01,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:33:01,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:33:01,203 INFO L87 Difference]: Start difference. First operand 176 states and 253 transitions. Second operand has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 01:33:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:33:01,677 INFO L93 Difference]: Finished difference Result 334 states and 492 transitions. [2023-11-29 01:33:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:33:01,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 138 [2023-11-29 01:33:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:33:01,680 INFO L225 Difference]: With dead ends: 334 [2023-11-29 01:33:01,680 INFO L226 Difference]: Without dead ends: 180 [2023-11-29 01:33:01,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:33:01,681 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 13 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:33:01,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1575 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:33:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-29 01:33:01,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-11-29 01:33:01,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 113 states have (on average 1.2920353982300885) internal successors, (146), 116 states have internal predecessors, (146), 50 states have call successors, (50), 14 states have call predecessors, (50), 16 states have return successors, (69), 49 states have call predecessors, (69), 48 states have call successors, (69) [2023-11-29 01:33:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 265 transitions. [2023-11-29 01:33:01,699 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 265 transitions. Word has length 138 [2023-11-29 01:33:01,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:33:01,700 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 265 transitions. [2023-11-29 01:33:01,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 01:33:01,700 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 265 transitions. [2023-11-29 01:33:01,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 01:33:01,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:33:01,702 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:33:01,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:33:01,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:01,902 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:33:01,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:33:01,903 INFO L85 PathProgramCache]: Analyzing trace with hash 751976053, now seen corresponding path program 1 times [2023-11-29 01:33:01,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:33:01,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127881876] [2023-11-29 01:33:01,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:01,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:33:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:33:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:33:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:33:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:33:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:33:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:33:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:33:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 01:33:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 01:33:02,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 01:33:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 01:33:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 01:33:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 01:33:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 01:33:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:33:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 01:33:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 01:33:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 01:33:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 01:33:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 01:33:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 01:33:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:02,755 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-29 01:33:02,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:02,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127881876] [2023-11-29 01:33:02,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127881876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:33:02,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137358820] [2023-11-29 01:33:02,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:02,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:02,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:02,758 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:02,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:33:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:03,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 2964 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 01:33:03,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:03,466 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-11-29 01:33:03,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:33:03,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137358820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:33:03,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:33:03,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-29 01:33:03,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078037868] [2023-11-29 01:33:03,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:33:03,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:33:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:33:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:33:03,468 INFO L87 Difference]: Start difference. First operand 180 states and 265 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 01:33:04,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:33:04,428 INFO L93 Difference]: Finished difference Result 338 states and 514 transitions. [2023-11-29 01:33:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 01:33:04,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 140 [2023-11-29 01:33:04,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:33:04,430 INFO L225 Difference]: With dead ends: 338 [2023-11-29 01:33:04,430 INFO L226 Difference]: Without dead ends: 180 [2023-11-29 01:33:04,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:33:04,432 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 18 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:33:04,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 765 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:33:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-29 01:33:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-11-29 01:33:04,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 113 states have (on average 1.2831858407079646) internal successors, (145), 116 states have internal predecessors, (145), 50 states have call successors, (50), 14 states have call predecessors, (50), 16 states have return successors, (69), 49 states have call predecessors, (69), 48 states have call successors, (69) [2023-11-29 01:33:04,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 264 transitions. [2023-11-29 01:33:04,445 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 264 transitions. Word has length 140 [2023-11-29 01:33:04,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:33:04,446 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 264 transitions. [2023-11-29 01:33:04,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 01:33:04,446 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 264 transitions. [2023-11-29 01:33:04,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-29 01:33:04,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:33:04,447 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:33:04,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:33:04,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:04,648 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:33:04,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:33:04,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1221189325, now seen corresponding path program 1 times [2023-11-29 01:33:04,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:33:04,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163967319] [2023-11-29 01:33:04,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:04,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:33:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:33:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:33:05,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:33:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:33:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:33:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:33:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:33:05,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 01:33:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 01:33:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 01:33:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 01:33:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 01:33:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 01:33:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 01:33:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:33:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 01:33:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 01:33:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-29 01:33:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 01:33:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 01:33:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 01:33:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:05,387 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-29 01:33:05,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:05,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163967319] [2023-11-29 01:33:05,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163967319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:33:05,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893474954] [2023-11-29 01:33:05,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:05,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:05,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:05,389 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:05,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:33:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:06,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 2969 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 01:33:06,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:06,968 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 154 proven. 4 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-29 01:33:06,968 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:33:07,297 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 01:33:07,298 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 20 treesize of output 19 [2023-11-29 01:33:07,323 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2023-11-29 01:33:07,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893474954] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:33:07,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:33:07,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 11] total 24 [2023-11-29 01:33:07,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638506730] [2023-11-29 01:33:07,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:33:07,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 01:33:07,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:07,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 01:33:07,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:33:07,326 INFO L87 Difference]: Start difference. First operand 180 states and 264 transitions. Second operand has 24 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 7 states have call successors, (50), 5 states have call predecessors, (50), 7 states have return successors, (47), 5 states have call predecessors, (47), 7 states have call successors, (47) [2023-11-29 01:33:13,417 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 01:33:17,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:33:21,838 WARN L539 Checker$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 01:33:28,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:33:32,984 WARN L539 Checker$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 01:33:37,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:33:41,070 WARN L539 Checker$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 01:33:45,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:33:49,368 WARN L539 Checker$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 01:33:53,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:33:57,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:34:01,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:34:05,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:34:09,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:34:13,647 WARN L539 Checker$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 01:34:14,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:34:14,639 INFO L93 Difference]: Finished difference Result 387 states and 553 transitions. [2023-11-29 01:34:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 01:34:14,639 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 7 states have call successors, (50), 5 states have call predecessors, (50), 7 states have return successors, (47), 5 states have call predecessors, (47), 7 states have call successors, (47) Word has length 140 [2023-11-29 01:34:14,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:34:14,641 INFO L225 Difference]: With dead ends: 387 [2023-11-29 01:34:14,641 INFO L226 Difference]: Without dead ends: 234 [2023-11-29 01:34:14,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 297 SyntacticMatches, 12 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=377, Invalid=2173, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 01:34:14,644 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 309 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 154 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:34:14,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1522 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2723 Invalid, 15 Unknown, 0 Unchecked, 66.2s Time] [2023-11-29 01:34:14,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-29 01:34:14,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 207. [2023-11-29 01:34:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 136 states have (on average 1.2647058823529411) internal successors, (172), 139 states have internal predecessors, (172), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (64), 49 states have call predecessors, (64), 48 states have call successors, (64) [2023-11-29 01:34:14,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 286 transitions. [2023-11-29 01:34:14,665 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 286 transitions. Word has length 140 [2023-11-29 01:34:14,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:34:14,665 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 286 transitions. [2023-11-29 01:34:14,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 5.318181818181818) internal successors, (117), 22 states have internal predecessors, (117), 7 states have call successors, (50), 5 states have call predecessors, (50), 7 states have return successors, (47), 5 states have call predecessors, (47), 7 states have call successors, (47) [2023-11-29 01:34:14,666 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 286 transitions. [2023-11-29 01:34:14,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-29 01:34:14,667 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:34:14,667 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:34:14,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:34:14,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:34:14,868 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:34:14,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:34:14,868 INFO L85 PathProgramCache]: Analyzing trace with hash 292539090, now seen corresponding path program 1 times [2023-11-29 01:34:14,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:34:14,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555555706] [2023-11-29 01:34:14,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:34:14,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:34:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:34:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:34:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:34:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:34:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:34:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:34:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 01:34:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 01:34:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 01:34:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 01:34:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 01:34:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 01:34:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 01:34:15,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-29 01:34:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 01:34:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:34:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 01:34:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-29 01:34:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 01:34:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-29 01:34:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-29 01:34:15,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:34:15,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555555706] [2023-11-29 01:34:15,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555555706] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:34:15,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555901251] [2023-11-29 01:34:15,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:34:15,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:15,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:34:15,775 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:34:15,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:34:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:16,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 01:34:16,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:34:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-29 01:34:16,580 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:34:16,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555901251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:34:16,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:34:16,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 15 [2023-11-29 01:34:16,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889007724] [2023-11-29 01:34:16,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:34:16,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:34:16,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:34:16,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:34:16,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:34:16,582 INFO L87 Difference]: Start difference. First operand 207 states and 286 transitions. Second operand has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 01:34:17,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:34:17,310 INFO L93 Difference]: Finished difference Result 368 states and 514 transitions. [2023-11-29 01:34:17,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:34:17,311 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 145 [2023-11-29 01:34:17,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:34:17,312 INFO L225 Difference]: With dead ends: 368 [2023-11-29 01:34:17,313 INFO L226 Difference]: Without dead ends: 211 [2023-11-29 01:34:17,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-11-29 01:34:17,314 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 12 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:34:17,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1559 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 01:34:17,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-29 01:34:17,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2023-11-29 01:34:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 137 states have (on average 1.2627737226277371) internal successors, (173), 140 states have internal predecessors, (173), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (64), 49 states have call predecessors, (64), 48 states have call successors, (64) [2023-11-29 01:34:17,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 287 transitions. [2023-11-29 01:34:17,328 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 287 transitions. Word has length 145 [2023-11-29 01:34:17,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:34:17,328 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 287 transitions. [2023-11-29 01:34:17,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 01:34:17,329 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 287 transitions. [2023-11-29 01:34:17,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-29 01:34:17,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:34:17,330 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:34:17,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:34:17,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:34:17,530 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:34:17,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:34:17,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2067320555, now seen corresponding path program 2 times [2023-11-29 01:34:17,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:34:17,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432896887] [2023-11-29 01:34:17,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:34:17,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:34:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:34:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:34:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:34:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:34:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:34:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:34:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:34:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 01:34:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 01:34:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 01:34:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 01:34:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 01:34:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 01:34:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 01:34:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 01:34:18,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-29 01:34:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 01:34:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-29 01:34:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-29 01:34:18,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 01:34:18,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-29 01:34:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:34:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-29 01:34:18,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:34:18,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432896887] [2023-11-29 01:34:18,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432896887] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:34:18,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457335230] [2023-11-29 01:34:18,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:34:18,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:34:18,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:34:18,458 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:34:18,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:34:19,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:34:19,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:34:19,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 3122 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-29 01:34:19,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:34:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 152 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-29 01:34:20,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:34:21,043 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 01:34:21,043 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 20 treesize of output 19 [2023-11-29 01:34:21,069 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-29 01:34:21,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457335230] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:34:21,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:34:21,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14, 13] total 29 [2023-11-29 01:34:21,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617052599] [2023-11-29 01:34:21,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:34:21,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 01:34:21,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:34:21,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 01:34:21,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=730, Unknown=0, NotChecked=0, Total=812 [2023-11-29 01:34:21,072 INFO L87 Difference]: Start difference. First operand 208 states and 287 transitions. Second operand has 29 states, 27 states have (on average 4.925925925925926) internal successors, (133), 25 states have internal predecessors, (133), 9 states have call successors, (55), 7 states have call predecessors, (55), 7 states have return successors, (50), 7 states have call predecessors, (50), 9 states have call successors, (50) [2023-11-29 01:34:25,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:34:31,262 WARN L539 Checker$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 01:34:35,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:34:43,006 WARN L539 Checker$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 01:34:47,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:34:51,106 WARN L539 Checker$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 01:34:55,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:34:59,363 WARN L539 Checker$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 01:35:03,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:35:07,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:35:11,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:35:15,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:35:19,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:35:23,757 WARN L539 Checker$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 01:35:27,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:35:31,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:35:35,828 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 01:35:36,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:35:36,848 INFO L93 Difference]: Finished difference Result 426 states and 592 transitions. [2023-11-29 01:35:36,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 01:35:36,849 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.925925925925926) internal successors, (133), 25 states have internal predecessors, (133), 9 states have call successors, (55), 7 states have call predecessors, (55), 7 states have return successors, (50), 7 states have call predecessors, (50), 9 states have call successors, (50) Word has length 147 [2023-11-29 01:35:36,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:35:36,850 INFO L225 Difference]: With dead ends: 426 [2023-11-29 01:35:36,850 INFO L226 Difference]: Without dead ends: 256 [2023-11-29 01:35:36,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 299 SyntacticMatches, 18 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=441, Invalid=3341, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 01:35:36,853 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 400 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 2755 mSolverCounterSat, 172 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 2944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2755 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:35:36,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 1539 Invalid, 2944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2755 Invalid, 17 Unknown, 0 Unchecked, 74.3s Time] [2023-11-29 01:35:36,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-29 01:35:36,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 212. [2023-11-29 01:35:36,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 140 states have (on average 1.2571428571428571) internal successors, (176), 144 states have internal predecessors, (176), 50 states have call successors, (50), 18 states have call predecessors, (50), 21 states have return successors, (65), 49 states have call predecessors, (65), 48 states have call successors, (65) [2023-11-29 01:35:36,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 291 transitions. [2023-11-29 01:35:36,870 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 291 transitions. Word has length 147 [2023-11-29 01:35:36,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:35:36,870 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 291 transitions. [2023-11-29 01:35:36,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.925925925925926) internal successors, (133), 25 states have internal predecessors, (133), 9 states have call successors, (55), 7 states have call predecessors, (55), 7 states have return successors, (50), 7 states have call predecessors, (50), 9 states have call successors, (50) [2023-11-29 01:35:36,871 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 291 transitions. [2023-11-29 01:35:36,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-29 01:35:36,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:35:36,872 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:35:36,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 01:35:37,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:35:37,072 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:35:37,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:35:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash -506146980, now seen corresponding path program 2 times [2023-11-29 01:35:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:35:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484510614] [2023-11-29 01:35:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:35:37,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:35:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:37,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:35:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:37,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:35:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:35:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:35:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:37,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:35:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:37,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:35:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:37,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:35:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:37,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 01:35:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:37,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 01:35:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:37,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 01:35:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:37,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 01:35:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:38,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 01:35:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:38,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 01:35:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:38,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:35:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:38,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 01:35:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 01:35:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:38,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 01:35:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:38,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 01:35:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 01:35:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:38,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:35:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:38,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-29 01:35:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:38,079 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-11-29 01:35:38,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:35:38,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484510614] [2023-11-29 01:35:38,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484510614] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:35:38,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017385539] [2023-11-29 01:35:38,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 01:35:38,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:35:38,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:35:38,080 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:35:38,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:35:38,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 01:35:38,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:35:38,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 3265 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:35:38,891 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:35:38,982 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-29 01:35:38,982 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:35:38,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017385539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:35:38,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:35:38,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2023-11-29 01:35:38,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033966939] [2023-11-29 01:35:38,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:35:38,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:35:38,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:35:38,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:35:38,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:35:38,985 INFO L87 Difference]: Start difference. First operand 212 states and 291 transitions. Second operand has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 01:35:39,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:35:39,638 INFO L93 Difference]: Finished difference Result 367 states and 507 transitions. [2023-11-29 01:35:39,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:35:39,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 152 [2023-11-29 01:35:39,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:35:39,641 INFO L225 Difference]: With dead ends: 367 [2023-11-29 01:35:39,642 INFO L226 Difference]: Without dead ends: 212 [2023-11-29 01:35:39,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:35:39,643 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 12 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1552 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:35:39,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1552 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:35:39,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-29 01:35:39,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 209. [2023-11-29 01:35:39,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 138 states have (on average 1.2608695652173914) internal successors, (174), 141 states have internal predecessors, (174), 50 states have call successors, (50), 18 states have call predecessors, (50), 20 states have return successors, (63), 49 states have call predecessors, (63), 48 states have call successors, (63) [2023-11-29 01:35:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 287 transitions. [2023-11-29 01:35:39,666 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 287 transitions. Word has length 152 [2023-11-29 01:35:39,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:35:39,666 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 287 transitions. [2023-11-29 01:35:39,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.0) internal successors, (63), 8 states have internal predecessors, (63), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 01:35:39,667 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 287 transitions. [2023-11-29 01:35:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-29 01:35:39,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:35:39,668 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:35:39,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:35:39,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:35:39,869 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:35:39,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:35:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1894538165, now seen corresponding path program 3 times [2023-11-29 01:35:39,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:35:39,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366336722] [2023-11-29 01:35:39,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:35:39,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:35:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:35:40,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:35:40,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:35:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:35:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:35:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:35:40,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:35:40,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 01:35:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 01:35:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 01:35:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 01:35:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 01:35:40,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 01:35:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:35:40,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-29 01:35:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 01:35:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-29 01:35:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-29 01:35:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-29 01:35:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-29 01:35:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-29 01:35:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:35:40,913 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-29 01:35:40,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:35:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366336722] [2023-11-29 01:35:40,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366336722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:35:40,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78842906] [2023-11-29 01:35:40,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:35:40,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:35:40,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:35:40,915 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:35:40,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:35:42,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 01:35:42,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:35:42,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 2622 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 01:35:42,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:35:42,893 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 152 proven. 4 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-29 01:35:42,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:35:43,125 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 01:35:43,125 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 20 treesize of output 19 [2023-11-29 01:35:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-29 01:35:43,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78842906] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:35:43,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:35:43,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 10] total 22 [2023-11-29 01:35:43,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310377068] [2023-11-29 01:35:43,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:35:43,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:35:43,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:35:43,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:35:43,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2023-11-29 01:35:43,162 INFO L87 Difference]: Start difference. First operand 209 states and 287 transitions. Second operand has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 4 states have call successors, (40), 5 states have call predecessors, (40), 7 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2023-11-29 01:35:48,539 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 01:35:53,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:35:57,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:05,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:09,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:13,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:17,853 WARN L539 Checker$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 01:36:21,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:25,996 WARN L539 Checker$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 01:36:30,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:34,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:38,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:42,269 WARN L539 Checker$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 01:36:46,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:50,387 WARN L539 Checker$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 01:36:54,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:36:58,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:37:02,498 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 01:37:04,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:04,271 INFO L93 Difference]: Finished difference Result 529 states and 746 transitions. [2023-11-29 01:37:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 01:37:04,271 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 4 states have call successors, (40), 5 states have call predecessors, (40), 7 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) Word has length 154 [2023-11-29 01:37:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:04,274 INFO L225 Difference]: With dead ends: 529 [2023-11-29 01:37:04,274 INFO L226 Difference]: Without dead ends: 359 [2023-11-29 01:37:04,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 335 SyntacticMatches, 4 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=386, Invalid=2584, Unknown=0, NotChecked=0, Total=2970 [2023-11-29 01:37:04,276 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 390 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 3409 mSolverCounterSat, 168 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 79.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 2166 SdHoareTripleChecker+Invalid, 3595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 3409 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:04,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 2166 Invalid, 3595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 3409 Invalid, 18 Unknown, 0 Unchecked, 79.8s Time] [2023-11-29 01:37:04,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2023-11-29 01:37:04,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 287. [2023-11-29 01:37:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 184 states have (on average 1.2608695652173914) internal successors, (232), 189 states have internal predecessors, (232), 73 states have call successors, (73), 24 states have call predecessors, (73), 29 states have return successors, (98), 73 states have call predecessors, (98), 71 states have call successors, (98) [2023-11-29 01:37:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 403 transitions. [2023-11-29 01:37:04,303 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 403 transitions. Word has length 154 [2023-11-29 01:37:04,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:04,303 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 403 transitions. [2023-11-29 01:37:04,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 20 states have internal predecessors, (98), 4 states have call successors, (40), 5 states have call predecessors, (40), 7 states have return successors, (35), 3 states have call predecessors, (35), 4 states have call successors, (35) [2023-11-29 01:37:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 403 transitions. [2023-11-29 01:37:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-29 01:37:04,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:04,305 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:37:04,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-29 01:37:04,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:37:04,505 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:04,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:04,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1780753316, now seen corresponding path program 3 times [2023-11-29 01:37:04,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:04,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756336896] [2023-11-29 01:37:04,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:04,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:37:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:37:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:37:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:37:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:37:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:37:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:37:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 01:37:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 01:37:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 01:37:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 01:37:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 01:37:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 01:37:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 01:37:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 01:37:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:37:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 01:37:05,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 01:37:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 01:37:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-29 01:37:05,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 01:37:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 39 proven. 3 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-29 01:37:05,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:05,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756336896] [2023-11-29 01:37:05,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756336896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:37:05,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328085880] [2023-11-29 01:37:05,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 01:37:05,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:37:05,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:37:05,918 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:37:05,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:37:06,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 01:37:06,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:37:06,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 2448 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:37:06,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:37:06,892 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-29 01:37:06,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:37:06,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328085880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:06,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:37:06,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2023-11-29 01:37:06,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150111451] [2023-11-29 01:37:06,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:06,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:37:06,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:06,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:37:06,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:37:06,894 INFO L87 Difference]: Start difference. First operand 287 states and 403 transitions. Second operand has 9 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 01:37:07,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:07,506 INFO L93 Difference]: Finished difference Result 494 states and 706 transitions. [2023-11-29 01:37:07,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:37:07,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 159 [2023-11-29 01:37:07,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:07,509 INFO L225 Difference]: With dead ends: 494 [2023-11-29 01:37:07,509 INFO L226 Difference]: Without dead ends: 283 [2023-11-29 01:37:07,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:37:07,511 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 12 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:07,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1543 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:37:07,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-29 01:37:07,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-29 01:37:07,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 181 states have (on average 1.2596685082872927) internal successors, (228), 185 states have internal predecessors, (228), 73 states have call successors, (73), 24 states have call predecessors, (73), 28 states have return successors, (97), 73 states have call predecessors, (97), 71 states have call successors, (97) [2023-11-29 01:37:07,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 398 transitions. [2023-11-29 01:37:07,547 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 398 transitions. Word has length 159 [2023-11-29 01:37:07,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:07,547 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 398 transitions. [2023-11-29 01:37:07,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-29 01:37:07,547 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 398 transitions. [2023-11-29 01:37:07,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 01:37:07,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:07,549 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:37:07,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:37:07,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:37:07,755 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:07,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:07,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1111448491, now seen corresponding path program 4 times [2023-11-29 01:37:07,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:07,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657645220] [2023-11-29 01:37:07,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:07,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:37:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:37:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:37:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:37:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:37:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:37:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:37:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 01:37:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 01:37:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 01:37:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 01:37:11,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 01:37:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 01:37:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 01:37:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 01:37:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:37:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 01:37:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 01:37:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 01:37:11,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 01:37:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-29 01:37:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-29 01:37:11,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:11,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657645220] [2023-11-29 01:37:11,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657645220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:37:11,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716773745] [2023-11-29 01:37:11,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 01:37:11,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:37:11,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:37:11,716 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:37:11,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:37:12,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 01:37:12,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 01:37:12,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 3428 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 01:37:12,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:37:12,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:37:12,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 01:37:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-29 01:37:14,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:37:14,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716773745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:14,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:37:14,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [23] total 33 [2023-11-29 01:37:14,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907396065] [2023-11-29 01:37:14,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:14,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:37:14,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:14,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:37:14,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=964, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 01:37:14,482 INFO L87 Difference]: Start difference. First operand 283 states and 398 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 12 states have internal predecessors, (77), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-29 01:37:16,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:37:16,980 INFO L93 Difference]: Finished difference Result 820 states and 1170 transitions. [2023-11-29 01:37:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:37:16,980 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 12 states have internal predecessors, (77), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 161 [2023-11-29 01:37:16,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:37:16,984 INFO L225 Difference]: With dead ends: 820 [2023-11-29 01:37:16,984 INFO L226 Difference]: Without dead ends: 559 [2023-11-29 01:37:16,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 175 SyntacticMatches, 14 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=135, Invalid=1347, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:37:16,986 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 181 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:37:16,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1105 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 01:37:16,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2023-11-29 01:37:17,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 536. [2023-11-29 01:37:17,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 341 states have (on average 1.2346041055718475) internal successors, (421), 353 states have internal predecessors, (421), 139 states have call successors, (139), 44 states have call predecessors, (139), 55 states have return successors, (205), 138 states have call predecessors, (205), 136 states have call successors, (205) [2023-11-29 01:37:17,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 765 transitions. [2023-11-29 01:37:17,070 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 765 transitions. Word has length 161 [2023-11-29 01:37:17,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:37:17,070 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 765 transitions. [2023-11-29 01:37:17,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 12 states have internal predecessors, (77), 5 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-29 01:37:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 765 transitions. [2023-11-29 01:37:17,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 01:37:17,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:37:17,073 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:37:17,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:37:17,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:37:17,273 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:37:17,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:37:17,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1889917232, now seen corresponding path program 1 times [2023-11-29 01:37:17,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:37:17,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468389195] [2023-11-29 01:37:17,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:17,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:37:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:37:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:37:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:37:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:37:20,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:37:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 01:37:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:37:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:37:20,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:37:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:37:20,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:37:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 01:37:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 01:37:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 01:37:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 01:37:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 01:37:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:37:20,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-29 01:37:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:21,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-29 01:37:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:21,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:37:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:21,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 01:37:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-29 01:37:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:21,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-29 01:37:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 37 proven. 16 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-29 01:37:21,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:37:21,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468389195] [2023-11-29 01:37:21,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468389195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:37:21,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53009595] [2023-11-29 01:37:21,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:37:21,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:37:21,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:37:21,264 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:37:21,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:37:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:37:22,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 3464 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 01:37:22,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:37:22,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:37:23,772 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 17 treesize of output 9 [2023-11-29 01:37:23,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:37:23,779 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 20 [2023-11-29 01:37:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-29 01:37:23,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:37:23,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53009595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:37:23,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:37:23,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [25] total 39 [2023-11-29 01:37:23,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79603688] [2023-11-29 01:37:23,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:37:23,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 01:37:23,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:37:23,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 01:37:23,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:37:23,839 INFO L87 Difference]: Start difference. First operand 536 states and 765 transitions. Second operand has 16 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-29 01:37:28,793 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 01:37:33,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:37:37,527 WARN L539 Checker$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 01:37:41,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:37:45,654 WARN L539 Checker$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 01:37:49,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:37:53,880 WARN L539 Checker$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 01:37:58,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:02,364 WARN L539 Checker$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 01:38:06,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:10,389 WARN L539 Checker$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 01:38:14,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:18,406 WARN L539 Checker$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 01:38:22,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:26,521 WARN L539 Checker$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 01:38:30,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:34,666 WARN L539 Checker$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 01:38:38,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:42,805 WARN L539 Checker$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 01:38:47,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:51,620 WARN L539 Checker$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 01:38:55,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:38:59,797 WARN L539 Checker$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 01:39:03,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:07,828 WARN L539 Checker$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 01:39:11,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:15,887 WARN L539 Checker$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 01:39:19,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.81s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:23,710 WARN L539 Checker$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 01:39:27,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:31,747 WARN L539 Checker$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 01:39:35,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:39,889 WARN L539 Checker$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 01:39:43,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:47,925 WARN L539 Checker$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 01:39:51,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:55,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:39:59,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:03,781 WARN L539 Checker$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 01:40:07,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:11,889 WARN L539 Checker$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 01:40:15,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:19,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.84s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:40:20,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:20,581 INFO L93 Difference]: Finished difference Result 1109 states and 1578 transitions. [2023-11-29 01:40:20,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 01:40:20,582 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 171 [2023-11-29 01:40:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:20,587 INFO L225 Difference]: With dead ends: 1109 [2023-11-29 01:40:20,588 INFO L226 Difference]: Without dead ends: 657 [2023-11-29 01:40:20,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 193 SyntacticMatches, 7 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=182, Invalid=1888, Unknown=0, NotChecked=0, Total=2070 [2023-11-29 01:40:20,591 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 296 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 1939 mSolverCounterSat, 46 mSolverCounterUnsat, 43 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 176.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1939 IncrementalHoareTripleChecker+Invalid, 43 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 176.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:20,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1702 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1939 Invalid, 43 Unknown, 0 Unchecked, 176.3s Time] [2023-11-29 01:40:20,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2023-11-29 01:40:20,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 611. [2023-11-29 01:40:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 394 states have (on average 1.2131979695431472) internal successors, (478), 407 states have internal predecessors, (478), 155 states have call successors, (155), 50 states have call predecessors, (155), 61 states have return successors, (225), 153 states have call predecessors, (225), 152 states have call successors, (225) [2023-11-29 01:40:20,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 858 transitions. [2023-11-29 01:40:20,659 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 858 transitions. Word has length 171 [2023-11-29 01:40:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:20,660 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 858 transitions. [2023-11-29 01:40:20,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.857142857142857) internal successors, (68), 13 states have internal predecessors, (68), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-29 01:40:20,660 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 858 transitions. [2023-11-29 01:40:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-11-29 01:40:20,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:20,661 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:40:20,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:40:20,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:20,862 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:40:20,862 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:20,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1640507627, now seen corresponding path program 1 times [2023-11-29 01:40:20,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:20,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622433921] [2023-11-29 01:40:20,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:20,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:40:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:40:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:40:21,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:40:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:40:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-29 01:40:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-29 01:40:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 01:40:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 01:40:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 01:40:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 01:40:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 01:40:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-29 01:40:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-29 01:40:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 01:40:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 01:40:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-29 01:40:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 01:40:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-29 01:40:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-29 01:40:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2023-11-29 01:40:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-29 01:40:21,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:21,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622433921] [2023-11-29 01:40:21,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622433921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:40:21,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899561772] [2023-11-29 01:40:21,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:21,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:21,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:21,349 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:21,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:40:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:22,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 3418 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:40:22,272 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:22,280 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-29 01:40:22,280 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:40:22,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899561772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:40:22,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:40:22,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-29 01:40:22,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723365002] [2023-11-29 01:40:22,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:40:22,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:40:22,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:40:22,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:40:22,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:40:22,282 INFO L87 Difference]: Start difference. First operand 611 states and 858 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 01:40:22,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:40:22,503 INFO L93 Difference]: Finished difference Result 1037 states and 1498 transitions. [2023-11-29 01:40:22,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:40:22,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 161 [2023-11-29 01:40:22,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:40:22,506 INFO L225 Difference]: With dead ends: 1037 [2023-11-29 01:40:22,507 INFO L226 Difference]: Without dead ends: 485 [2023-11-29 01:40:22,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:40:22,510 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 6 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:40:22,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 616 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:40:22,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2023-11-29 01:40:22,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 479. [2023-11-29 01:40:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 306 states have (on average 1.2352941176470589) internal successors, (378), 315 states have internal predecessors, (378), 122 states have call successors, (122), 40 states have call predecessors, (122), 50 states have return successors, (172), 123 states have call predecessors, (172), 119 states have call successors, (172) [2023-11-29 01:40:22,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 672 transitions. [2023-11-29 01:40:22,581 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 672 transitions. Word has length 161 [2023-11-29 01:40:22,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:40:22,581 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 672 transitions. [2023-11-29 01:40:22,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-29 01:40:22,582 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 672 transitions. [2023-11-29 01:40:22,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2023-11-29 01:40:22,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:40:22,583 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:40:22,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:40:22,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:22,784 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:40:22,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:40:22,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1708316033, now seen corresponding path program 1 times [2023-11-29 01:40:22,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:40:22,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334963904] [2023-11-29 01:40:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:22,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:40:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:40:26,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:40:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:40:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:40:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:40:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 01:40:26,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:40:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:40:26,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:40:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:26,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:40:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:40:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 01:40:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 01:40:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:40:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:40:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:40:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:40:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 01:40:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 01:40:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:40:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 01:40:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 01:40:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-29 01:40:27,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-29 01:40:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 29 proven. 25 refuted. 0 times theorem prover too weak. 323 trivial. 0 not checked. [2023-11-29 01:40:27,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:40:27,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334963904] [2023-11-29 01:40:27,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334963904] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:40:27,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597835179] [2023-11-29 01:40:27,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:40:27,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:40:27,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:40:27,382 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:40:27,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:40:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:40:28,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 3509 conjuncts, 129 conjunts are in the unsatisfiable core [2023-11-29 01:40:28,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:40:28,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:40:28,696 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 01:40:28,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 01:40:29,011 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 01:40:29,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 01:40:30,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 01:40:30,386 INFO L349 Elim1Store]: treesize reduction 92, result has 22.7 percent of original size [2023-11-29 01:40:30,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 34 treesize of output 39 [2023-11-29 01:40:30,417 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2023-11-29 01:40:30,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2023-11-29 01:40:30,899 INFO L349 Elim1Store]: treesize reduction 48, result has 28.4 percent of original size [2023-11-29 01:40:30,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 24 treesize of output 28 [2023-11-29 01:40:32,951 INFO L349 Elim1Store]: treesize reduction 84, result has 25.0 percent of original size [2023-11-29 01:40:32,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 29 treesize of output 40 [2023-11-29 01:40:33,459 INFO L349 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2023-11-29 01:40:33,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 21 treesize of output 25 [2023-11-29 01:40:33,581 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 01:40:33,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 27 [2023-11-29 01:41:02,421 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 112 proven. 79 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-29 01:41:02,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:41:03,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597835179] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:41:03,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:41:03,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 32] total 54 [2023-11-29 01:41:03,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324924173] [2023-11-29 01:41:03,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:41:03,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-29 01:41:03,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:41:03,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-29 01:41:03,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=3636, Unknown=24, NotChecked=0, Total=3906 [2023-11-29 01:41:03,309 INFO L87 Difference]: Start difference. First operand 479 states and 672 transitions. Second operand has 54 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 46 states have internal predecessors, (125), 20 states have call successors, (47), 10 states have call predecessors, (47), 14 states have return successors, (44), 19 states have call predecessors, (44), 18 states have call successors, (44) [2023-11-29 01:41:08,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:17,866 WARN L539 Checker$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 01:41:23,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:31,155 WARN L539 Checker$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 01:41:39,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:47,407 WARN L539 Checker$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 01:41:55,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:41:59,931 WARN L539 Checker$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 01:42:04,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:42:17,154 WARN L539 Checker$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 01:42:21,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:42:27,375 WARN L539 Checker$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 01:42:31,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:42:35,712 WARN L539 Checker$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 01:42:39,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:42:43,746 WARN L539 Checker$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 01:43:03,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:43:03,684 INFO L93 Difference]: Finished difference Result 794 states and 1079 transitions. [2023-11-29 01:43:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-29 01:43:03,685 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 46 states have internal predecessors, (125), 20 states have call successors, (47), 10 states have call predecessors, (47), 14 states have return successors, (44), 19 states have call predecessors, (44), 18 states have call successors, (44) Word has length 177 [2023-11-29 01:43:03,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:43:03,688 INFO L225 Difference]: With dead ends: 794 [2023-11-29 01:43:03,688 INFO L226 Difference]: Without dead ends: 608 [2023-11-29 01:43:03,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 187 SyntacticMatches, 26 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4824 ImplicationChecksByTransitivity, 70.9s TimeCoverageRelationStatistics Valid=1261, Invalid=13469, Unknown=32, NotChecked=0, Total=14762 [2023-11-29 01:43:03,694 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 857 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 6152 mSolverCounterSat, 411 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 81.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 6579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 6152 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 82.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:43:03,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 2091 Invalid, 6579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [411 Valid, 6152 Invalid, 16 Unknown, 0 Unchecked, 82.6s Time] [2023-11-29 01:43:03,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-11-29 01:43:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 409. [2023-11-29 01:43:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 277 states have (on average 1.2346570397111913) internal successors, (342), 286 states have internal predecessors, (342), 87 states have call successors, (87), 37 states have call predecessors, (87), 44 states have return successors, (105), 85 states have call predecessors, (105), 84 states have call successors, (105) [2023-11-29 01:43:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 534 transitions. [2023-11-29 01:43:03,756 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 534 transitions. Word has length 177 [2023-11-29 01:43:03,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:43:03,756 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 534 transitions. [2023-11-29 01:43:03,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 43 states have (on average 2.9069767441860463) internal successors, (125), 46 states have internal predecessors, (125), 20 states have call successors, (47), 10 states have call predecessors, (47), 14 states have return successors, (44), 19 states have call predecessors, (44), 18 states have call successors, (44) [2023-11-29 01:43:03,756 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 534 transitions. [2023-11-29 01:43:03,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-29 01:43:03,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:43:03,757 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:43:03,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:43:03,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:43:03,958 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:43:03,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:43:03,958 INFO L85 PathProgramCache]: Analyzing trace with hash -105989703, now seen corresponding path program 1 times [2023-11-29 01:43:03,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:43:03,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727372215] [2023-11-29 01:43:03,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:43:03,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:43:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:43:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:43:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:43:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:43:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:43:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 01:43:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:43:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:43:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:43:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:43:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:43:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 01:43:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 01:43:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:43:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:43:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:43:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:43:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 01:43:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 01:43:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:43:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 01:43:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 01:43:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-29 01:43:05,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-29 01:43:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-11-29 01:43:05,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:43:05,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727372215] [2023-11-29 01:43:05,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727372215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:43:05,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:43:05,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 01:43:05,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392520753] [2023-11-29 01:43:05,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:43:05,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 01:43:05,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:43:05,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 01:43:05,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:43:05,672 INFO L87 Difference]: Start difference. First operand 409 states and 534 transitions. Second operand has 11 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-29 01:43:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:43:07,787 INFO L93 Difference]: Finished difference Result 461 states and 612 transitions. [2023-11-29 01:43:07,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:43:07,788 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-29 01:43:07,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:43:07,791 INFO L225 Difference]: With dead ends: 461 [2023-11-29 01:43:07,791 INFO L226 Difference]: Without dead ends: 459 [2023-11-29 01:43:07,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:43:07,792 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 151 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:43:07,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1083 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 01:43:07,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2023-11-29 01:43:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 427. [2023-11-29 01:43:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 289 states have (on average 1.2249134948096885) internal successors, (354), 300 states have internal predecessors, (354), 89 states have call successors, (89), 39 states have call predecessors, (89), 48 states have return successors, (117), 87 states have call predecessors, (117), 86 states have call successors, (117) [2023-11-29 01:43:07,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 560 transitions. [2023-11-29 01:43:07,847 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 560 transitions. Word has length 181 [2023-11-29 01:43:07,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:43:07,847 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 560 transitions. [2023-11-29 01:43:07,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.0) internal successors, (54), 7 states have internal predecessors, (54), 2 states have call successors, (25), 4 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-29 01:43:07,848 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 560 transitions. [2023-11-29 01:43:07,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-29 01:43:07,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:43:07,849 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:43:07,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-29 01:43:07,849 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:43:07,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:43:07,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1985693842, now seen corresponding path program 1 times [2023-11-29 01:43:07,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:43:07,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571865841] [2023-11-29 01:43:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:43:07,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:43:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:43:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:43:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:43:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:43:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:43:10,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 01:43:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:43:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:43:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:43:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:43:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:43:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 01:43:10,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 01:43:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:43:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:43:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:43:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:43:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 01:43:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 01:43:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:43:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 01:43:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 01:43:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-29 01:43:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-29 01:43:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-11-29 01:43:10,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:43:10,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571865841] [2023-11-29 01:43:10,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571865841] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:43:10,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181154578] [2023-11-29 01:43:10,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:43:10,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:43:10,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:43:10,564 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:43:10,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:43:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:43:11,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 3531 conjuncts, 86 conjunts are in the unsatisfiable core [2023-11-29 01:43:11,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:43:14,287 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 212 proven. 31 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-29 01:43:14,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:43:15,068 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 29 treesize of output 17 [2023-11-29 01:43:15,118 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2023-11-29 01:43:15,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181154578] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:43:15,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 01:43:15,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22, 13] total 39 [2023-11-29 01:43:15,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672496706] [2023-11-29 01:43:15,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 01:43:15,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-29 01:43:15,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:43:15,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-29 01:43:15,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2023-11-29 01:43:15,121 INFO L87 Difference]: Start difference. First operand 427 states and 560 transitions. Second operand has 39 states, 32 states have (on average 3.84375) internal successors, (123), 30 states have internal predecessors, (123), 18 states have call successors, (58), 9 states have call predecessors, (58), 9 states have return successors, (50), 16 states have call predecessors, (50), 17 states have call successors, (50) [2023-11-29 01:43:21,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:43:26,155 WARN L539 Checker$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 01:43:30,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:43:37,488 WARN L539 Checker$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 01:43:41,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:43:45,920 WARN L539 Checker$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 01:43:50,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:43:54,150 WARN L539 Checker$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 01:43:58,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:02,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:06,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:10,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:44:11,275 INFO L93 Difference]: Finished difference Result 792 states and 1058 transitions. [2023-11-29 01:44:11,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 01:44:11,275 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 32 states have (on average 3.84375) internal successors, (123), 30 states have internal predecessors, (123), 18 states have call successors, (58), 9 states have call predecessors, (58), 9 states have return successors, (50), 16 states have call predecessors, (50), 17 states have call successors, (50) Word has length 183 [2023-11-29 01:44:11,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:44:11,278 INFO L225 Difference]: With dead ends: 792 [2023-11-29 01:44:11,278 INFO L226 Difference]: Without dead ends: 460 [2023-11-29 01:44:11,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 363 SyntacticMatches, 23 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=309, Invalid=3113, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 01:44:11,280 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 281 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 3339 mSolverCounterSat, 153 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 3504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 3339 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:44:11,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 2017 Invalid, 3504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 3339 Invalid, 12 Unknown, 0 Unchecked, 55.1s Time] [2023-11-29 01:44:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-11-29 01:44:11,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 431. [2023-11-29 01:44:11,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 292 states have (on average 1.2191780821917808) internal successors, (356), 303 states have internal predecessors, (356), 89 states have call successors, (89), 40 states have call predecessors, (89), 49 states have return successors, (117), 87 states have call predecessors, (117), 86 states have call successors, (117) [2023-11-29 01:44:11,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 562 transitions. [2023-11-29 01:44:11,335 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 562 transitions. Word has length 183 [2023-11-29 01:44:11,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:44:11,335 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 562 transitions. [2023-11-29 01:44:11,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 32 states have (on average 3.84375) internal successors, (123), 30 states have internal predecessors, (123), 18 states have call successors, (58), 9 states have call predecessors, (58), 9 states have return successors, (50), 16 states have call predecessors, (50), 17 states have call successors, (50) [2023-11-29 01:44:11,336 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 562 transitions. [2023-11-29 01:44:11,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-29 01:44:11,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:44:11,337 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:44:11,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:44:11,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 01:44:11,537 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:44:11,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:44:11,538 INFO L85 PathProgramCache]: Analyzing trace with hash -620329712, now seen corresponding path program 1 times [2023-11-29 01:44:11,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:44:11,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631827371] [2023-11-29 01:44:11,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:11,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:44:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:44:17,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:44:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:44:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:44:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:44:17,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 01:44:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:44:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:44:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:44:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:44:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:44:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 01:44:17,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 01:44:17,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:44:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:44:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:44:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:44:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 01:44:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 01:44:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:44:17,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 01:44:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 01:44:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-29 01:44:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:17,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-29 01:44:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:18,147 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 50 proven. 30 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-29 01:44:18,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:44:18,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631827371] [2023-11-29 01:44:18,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631827371] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:44:18,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291703728] [2023-11-29 01:44:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:44:18,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:44:18,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:44:18,149 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:44:18,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:44:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:44:19,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 3534 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-29 01:44:19,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:44:19,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2023-11-29 01:44:23,957 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 42 treesize of output 26 [2023-11-29 01:44:24,007 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 124 proven. 37 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-29 01:44:24,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:44:28,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291703728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:44:28,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:44:28,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25] total 43 [2023-11-29 01:44:28,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243177189] [2023-11-29 01:44:28,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:44:28,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-29 01:44:28,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:44:28,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-29 01:44:28,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2483, Unknown=1, NotChecked=0, Total=2652 [2023-11-29 01:44:28,959 INFO L87 Difference]: Start difference. First operand 431 states and 562 transitions. Second operand has 43 states, 36 states have (on average 3.5) internal successors, (126), 37 states have internal predecessors, (126), 17 states have call successors, (47), 6 states have call predecessors, (47), 10 states have return successors, (46), 18 states have call predecessors, (46), 17 states have call successors, (46) [2023-11-29 01:44:34,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:40,186 WARN L539 Checker$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 01:44:44,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:44:53,116 WARN L539 Checker$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 01:44:57,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:01,754 WARN L539 Checker$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 01:45:05,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:09,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:13,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 01:45:17,914 WARN L539 Checker$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 01:45:19,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:19,053 INFO L93 Difference]: Finished difference Result 452 states and 591 transitions. [2023-11-29 01:45:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-29 01:45:19,053 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 36 states have (on average 3.5) internal successors, (126), 37 states have internal predecessors, (126), 17 states have call successors, (47), 6 states have call predecessors, (47), 10 states have return successors, (46), 18 states have call predecessors, (46), 17 states have call successors, (46) Word has length 183 [2023-11-29 01:45:19,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:19,055 INFO L225 Difference]: With dead ends: 452 [2023-11-29 01:45:19,055 INFO L226 Difference]: Without dead ends: 282 [2023-11-29 01:45:19,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 327 SyntacticMatches, 32 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1870 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=454, Invalid=6187, Unknown=1, NotChecked=0, Total=6642 [2023-11-29 01:45:19,059 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 330 mSDsluCounter, 2447 mSDsCounter, 0 mSdLazyCounter, 3935 mSolverCounterSat, 141 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 2565 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 3935 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:19,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 2565 Invalid, 4086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 3935 Invalid, 10 Unknown, 0 Unchecked, 48.3s Time] [2023-11-29 01:45:19,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-29 01:45:19,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 266. [2023-11-29 01:45:19,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 183 states have (on average 1.1967213114754098) internal successors, (219), 187 states have internal predecessors, (219), 54 states have call successors, (54), 25 states have call predecessors, (54), 28 states have return successors, (64), 53 states have call predecessors, (64), 52 states have call successors, (64) [2023-11-29 01:45:19,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 337 transitions. [2023-11-29 01:45:19,102 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 337 transitions. Word has length 183 [2023-11-29 01:45:19,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:19,103 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 337 transitions. [2023-11-29 01:45:19,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 36 states have (on average 3.5) internal successors, (126), 37 states have internal predecessors, (126), 17 states have call successors, (47), 6 states have call predecessors, (47), 10 states have return successors, (46), 18 states have call predecessors, (46), 17 states have call successors, (46) [2023-11-29 01:45:19,103 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 337 transitions. [2023-11-29 01:45:19,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 01:45:19,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:19,105 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:19,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 01:45:19,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:45:19,306 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:19,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:19,307 INFO L85 PathProgramCache]: Analyzing trace with hash 488915175, now seen corresponding path program 1 times [2023-11-29 01:45:19,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:19,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735477458] [2023-11-29 01:45:19,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:19,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:45:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:45:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 01:45:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:45:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:45:20,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:45:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:45:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 01:45:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 01:45:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:45:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:45:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:45:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:45:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 01:45:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 01:45:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:45:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 01:45:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 01:45:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-29 01:45:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-29 01:45:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-11-29 01:45:20,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:20,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735477458] [2023-11-29 01:45:20,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735477458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:20,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:20,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:45:20,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590987259] [2023-11-29 01:45:20,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:20,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:45:20,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:45:20,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:45:20,976 INFO L87 Difference]: Start difference. First operand 266 states and 337 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 01:45:23,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:23,434 INFO L93 Difference]: Finished difference Result 441 states and 572 transitions. [2023-11-29 01:45:23,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:45:23,434 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 189 [2023-11-29 01:45:23,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:23,436 INFO L225 Difference]: With dead ends: 441 [2023-11-29 01:45:23,436 INFO L226 Difference]: Without dead ends: 280 [2023-11-29 01:45:23,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:45:23,437 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 263 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:23,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 790 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 01:45:23,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-29 01:45:23,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 269. [2023-11-29 01:45:23,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 186 states have (on average 1.1935483870967742) internal successors, (222), 190 states have internal predecessors, (222), 54 states have call successors, (54), 25 states have call predecessors, (54), 28 states have return successors, (64), 53 states have call predecessors, (64), 52 states have call successors, (64) [2023-11-29 01:45:23,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 340 transitions. [2023-11-29 01:45:23,492 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 340 transitions. Word has length 189 [2023-11-29 01:45:23,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:23,493 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 340 transitions. [2023-11-29 01:45:23,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 01:45:23,493 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 340 transitions. [2023-11-29 01:45:23,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 01:45:23,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:23,494 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:23,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 01:45:23,495 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:23,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:23,495 INFO L85 PathProgramCache]: Analyzing trace with hash -477295090, now seen corresponding path program 1 times [2023-11-29 01:45:23,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:23,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865418922] [2023-11-29 01:45:23,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:23,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:45:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:45:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 01:45:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:45:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:45:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:45:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:45:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 01:45:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 01:45:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:45:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:45:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:45:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:45:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 01:45:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 01:45:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:45:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 01:45:25,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 01:45:25,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-29 01:45:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-29 01:45:25,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-11-29 01:45:25,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:25,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865418922] [2023-11-29 01:45:25,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865418922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:25,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:25,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:45:25,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87743059] [2023-11-29 01:45:25,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:25,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:45:25,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:25,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:45:25,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:45:25,527 INFO L87 Difference]: Start difference. First operand 269 states and 340 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 01:45:26,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:26,631 INFO L93 Difference]: Finished difference Result 443 states and 574 transitions. [2023-11-29 01:45:26,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:45:26,631 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 190 [2023-11-29 01:45:26,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:26,633 INFO L225 Difference]: With dead ends: 443 [2023-11-29 01:45:26,633 INFO L226 Difference]: Without dead ends: 276 [2023-11-29 01:45:26,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:45:26,635 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 258 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:26,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 470 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:45:26,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-29 01:45:26,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 266. [2023-11-29 01:45:26,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 183 states have (on average 1.185792349726776) internal successors, (217), 187 states have internal predecessors, (217), 54 states have call successors, (54), 25 states have call predecessors, (54), 28 states have return successors, (64), 53 states have call predecessors, (64), 52 states have call successors, (64) [2023-11-29 01:45:26,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 335 transitions. [2023-11-29 01:45:26,689 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 335 transitions. Word has length 190 [2023-11-29 01:45:26,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:26,689 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 335 transitions. [2023-11-29 01:45:26,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 01:45:26,690 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 335 transitions. [2023-11-29 01:45:26,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-29 01:45:26,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:26,691 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:26,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-29 01:45:26,691 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:26,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:26,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1315020200, now seen corresponding path program 1 times [2023-11-29 01:45:26,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:26,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081140399] [2023-11-29 01:45:26,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:26,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:45:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:45:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 01:45:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:45:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:45:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:45:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:45:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 01:45:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 01:45:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:45:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:45:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:45:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:45:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 01:45:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 01:45:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:45:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 01:45:28,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 01:45:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-29 01:45:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-29 01:45:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-11-29 01:45:28,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081140399] [2023-11-29 01:45:28,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081140399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:28,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:28,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 01:45:28,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129302633] [2023-11-29 01:45:28,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:28,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:45:28,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:28,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:45:28,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:45:28,222 INFO L87 Difference]: Start difference. First operand 266 states and 335 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 01:45:30,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:30,586 INFO L93 Difference]: Finished difference Result 437 states and 564 transitions. [2023-11-29 01:45:30,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 01:45:30,587 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 190 [2023-11-29 01:45:30,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:30,588 INFO L225 Difference]: With dead ends: 437 [2023-11-29 01:45:30,588 INFO L226 Difference]: Without dead ends: 276 [2023-11-29 01:45:30,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:45:30,589 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 231 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 770 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:30,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 770 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-29 01:45:30,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-29 01:45:30,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 266. [2023-11-29 01:45:30,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 183 states have (on average 1.180327868852459) internal successors, (216), 187 states have internal predecessors, (216), 54 states have call successors, (54), 25 states have call predecessors, (54), 28 states have return successors, (64), 53 states have call predecessors, (64), 52 states have call successors, (64) [2023-11-29 01:45:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 334 transitions. [2023-11-29 01:45:30,643 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 334 transitions. Word has length 190 [2023-11-29 01:45:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:30,643 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 334 transitions. [2023-11-29 01:45:30,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 01:45:30,643 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 334 transitions. [2023-11-29 01:45:30,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-29 01:45:30,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:30,645 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:30,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 01:45:30,645 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:30,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:30,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1060544917, now seen corresponding path program 1 times [2023-11-29 01:45:30,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:30,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861621974] [2023-11-29 01:45:30,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:30,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:32,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:45:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:32,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:45:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 01:45:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:45:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:45:32,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:45:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:45:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 01:45:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 01:45:32,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:32,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:45:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:33,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:45:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:33,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:45:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:33,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:45:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:33,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 01:45:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:33,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 01:45:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:33,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:45:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:33,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 01:45:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:33,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 01:45:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:33,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-29 01:45:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:33,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-29 01:45:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:33,110 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2023-11-29 01:45:33,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:33,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861621974] [2023-11-29 01:45:33,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861621974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:45:33,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:45:33,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 01:45:33,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870892006] [2023-11-29 01:45:33,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:45:33,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:45:33,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:45:33,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:45:33,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-29 01:45:33,112 INFO L87 Difference]: Start difference. First operand 266 states and 334 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 10 states have internal predecessors, (65), 4 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 01:45:39,897 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 [] [2023-11-29 01:45:40,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:45:40,103 INFO L93 Difference]: Finished difference Result 438 states and 564 transitions. [2023-11-29 01:45:40,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 01:45:40,104 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 10 states have internal predecessors, (65), 4 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 191 [2023-11-29 01:45:40,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:45:40,106 INFO L225 Difference]: With dead ends: 438 [2023-11-29 01:45:40,106 INFO L226 Difference]: Without dead ends: 280 [2023-11-29 01:45:40,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:45:40,107 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 237 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 157 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:45:40,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 747 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 872 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2023-11-29 01:45:40,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-29 01:45:40,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 269. [2023-11-29 01:45:40,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 186 states have (on average 1.1774193548387097) internal successors, (219), 190 states have internal predecessors, (219), 54 states have call successors, (54), 25 states have call predecessors, (54), 28 states have return successors, (64), 53 states have call predecessors, (64), 52 states have call successors, (64) [2023-11-29 01:45:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 337 transitions. [2023-11-29 01:45:40,141 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 337 transitions. Word has length 191 [2023-11-29 01:45:40,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:45:40,142 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 337 transitions. [2023-11-29 01:45:40,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 10 states have internal predecessors, (65), 4 states have call successors, (25), 5 states have call predecessors, (25), 1 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-29 01:45:40,142 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 337 transitions. [2023-11-29 01:45:40,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-29 01:45:40,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:45:40,143 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:45:40,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 01:45:40,144 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:45:40,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:45:40,144 INFO L85 PathProgramCache]: Analyzing trace with hash -637843091, now seen corresponding path program 1 times [2023-11-29 01:45:40,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:45:40,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914975253] [2023-11-29 01:45:40,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:40,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:45:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:47,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-29 01:45:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-29 01:45:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 01:45:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 01:45:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-29 01:45:47,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-29 01:45:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 01:45:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-29 01:45:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 01:45:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-29 01:45:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 01:45:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 01:45:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 01:45:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 01:45:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 01:45:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-29 01:45:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-29 01:45:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-29 01:45:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-29 01:45:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-29 01:45:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-29 01:45:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:45:47,664 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2023-11-29 01:45:47,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:45:47,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914975253] [2023-11-29 01:45:47,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914975253] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:45:47,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926670874] [2023-11-29 01:45:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:45:47,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:45:47,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:45:47,665 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:45:47,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4ee85e3-dac1-4655-9579-00f48b98adfe/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process