./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/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_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/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_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:32:47,776 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:32:47,841 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 05:32:47,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:32:47,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:32:47,871 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:32:47,872 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:32:47,872 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:32:47,873 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:32:47,873 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:32:47,874 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:32:47,874 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:32:47,875 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:32:47,876 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:32:47,876 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:32:47,877 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:32:47,877 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:32:47,878 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:32:47,878 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:32:47,879 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:32:47,879 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:32:47,880 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:32:47,880 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:32:47,881 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:32:47,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:32:47,882 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:32:47,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:32:47,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:32:47,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:32:47,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:32:47,884 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:32:47,884 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:32:47,884 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:32:47,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:32:47,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:32:47,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:32:47,885 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:32:47,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:32:47,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:32:47,886 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_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2023-11-29 05:32:48,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:32:48,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:32:48,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:32:48,135 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:32:48,135 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:32:48,137 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2023-11-29 05:32:50,952 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:32:51,365 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:32:51,366 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2023-11-29 05:32:51,397 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/data/c80b00b16/ea87deb3ea1c47bf9e556d2576ed66f1/FLAG11ffefd9a [2023-11-29 05:32:51,411 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/data/c80b00b16/ea87deb3ea1c47bf9e556d2576ed66f1 [2023-11-29 05:32:51,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:32:51,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:32:51,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:32:51,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:32:51,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:32:51,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:32:51" (1/1) ... [2023-11-29 05:32:51,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b9fa09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:51, skipping insertion in model container [2023-11-29 05:32:51,423 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:32:51" (1/1) ... [2023-11-29 05:32:51,524 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:32:51,787 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_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2023-11-29 05:32:51,797 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_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2023-11-29 05:32:52,816 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:52,817 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:52,818 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:52,819 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:52,820 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:52,836 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:52,837 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:52,839 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:52,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,315 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 05:32:53,316 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 05:32:53,316 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 05:32:53,317 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 05:32:53,319 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 05:32:53,319 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 05:32:53,320 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 05:32:53,321 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 05:32:53,322 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 05:32:53,322 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 05:32:53,614 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,614 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:32:53,746 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:32:53,757 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_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2023-11-29 05:32:53,758 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_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4553,4566] [2023-11-29 05:32:53,794 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,794 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,794 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,795 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,795 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,802 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,802 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,804 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,804 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,838 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-29 05:32:53,839 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-29 05:32:53,839 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-29 05:32:53,840 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-29 05:32:53,841 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-29 05:32:53,842 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-29 05:32:53,842 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-29 05:32:53,843 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-29 05:32:53,843 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-29 05:32:53,844 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-29 05:32:53,912 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-29 05:32:53,914 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,915 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-29 05:32:53,925 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-29 05:32:53,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:32:54,141 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,141 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,141 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,141 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,141 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,141 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,141 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,142 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,142 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,142 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,142 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,142 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,142 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,143 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,143 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,143 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,143 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,143 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 05:32:54,151 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:32:54,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54 WrapperNode [2023-11-29 05:32:54,152 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:32:54,153 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:32:54,153 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:32:54,153 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:32:54,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (1/1) ... [2023-11-29 05:32:54,236 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (1/1) ... [2023-11-29 05:32:54,308 INFO L138 Inliner]: procedures = 690, calls = 2646, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 857 [2023-11-29 05:32:54,309 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:32:54,310 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:32:54,310 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:32:54,310 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:32:54,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (1/1) ... [2023-11-29 05:32:54,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (1/1) ... [2023-11-29 05:32:54,326 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (1/1) ... [2023-11-29 05:32:54,388 INFO L175 MemorySlicer]: Split 568 memory accesses to 9 slices as follows [29, 2, 256, 4, 236, 20, 9, 9, 3]. 45 percent of accesses are in the largest equivalence class. The 508 initializations are split as follows [0, 2, 256, 2, 236, 0, 4, 5, 3]. The 5 writes are split as follows [3, 0, 0, 0, 0, 1, 0, 1, 0]. [2023-11-29 05:32:54,388 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (1/1) ... [2023-11-29 05:32:54,389 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (1/1) ... [2023-11-29 05:32:54,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (1/1) ... [2023-11-29 05:32:54,430 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (1/1) ... [2023-11-29 05:32:54,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (1/1) ... [2023-11-29 05:32:54,449 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (1/1) ... [2023-11-29 05:32:54,465 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:32:54,466 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:32:54,466 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:32:54,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:32:54,467 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (1/1) ... [2023-11-29 05:32:54,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:32:54,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:32:54,494 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:32:54,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:32:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-29 05:32:54,529 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-29 05:32:54,529 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-29 05:32:54,529 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-29 05:32:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 05:32:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-29 05:32:54,530 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-29 05:32:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2023-11-29 05:32:54,530 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2023-11-29 05:32:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 05:32:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 05:32:54,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 05:32:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 05:32:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 05:32:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 05:32:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 05:32:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-29 05:32:54,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-29 05:32:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-29 05:32:54,532 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-29 05:32:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 05:32:54,532 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 05:32:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 05:32:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:32:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 05:32:54,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 05:32:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 05:32:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 05:32:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 05:32:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-29 05:32:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-29 05:32:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-29 05:32:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-29 05:32:54,533 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-29 05:32:54,534 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-29 05:32:54,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:32:54,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:32:54,534 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-29 05:32:54,534 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-29 05:32:54,534 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:32:54,534 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:32:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-29 05:32:54,535 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-29 05:32:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 05:32:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 05:32:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 05:32:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 05:32:54,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 05:32:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 05:32:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-29 05:32:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-29 05:32:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-29 05:32:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-29 05:32:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 05:32:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 05:32:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 05:32:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 05:32:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 05:32:54,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 05:32:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-29 05:32:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-29 05:32:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-29 05:32:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-29 05:32:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-29 05:32:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2023-11-29 05:32:54,537 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2023-11-29 05:32:54,537 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-29 05:32:54,538 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-29 05:32:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 05:32:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 05:32:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 05:32:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 05:32:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 05:32:54,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 05:32:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 05:32:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-29 05:32:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-29 05:32:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:32:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 05:32:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 05:32:54,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 05:32:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 05:32:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 05:32:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 05:32:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-29 05:32:54,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-29 05:32:54,824 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:32:54,826 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:32:56,174 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:32:56,428 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:32:56,429 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:32:56,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:32:56 BoogieIcfgContainer [2023-11-29 05:32:56,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:32:56,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:32:56,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:32:56,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:32:56,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:32:51" (1/3) ... [2023-11-29 05:32:56,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b20e052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:32:56, skipping insertion in model container [2023-11-29 05:32:56,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:32:54" (2/3) ... [2023-11-29 05:32:56,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b20e052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:32:56, skipping insertion in model container [2023-11-29 05:32:56,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:32:56" (3/3) ... [2023-11-29 05:32:56,438 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2023-11-29 05:32:56,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:32:56,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:32:56,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:32:56,518 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;@23271036, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:32:56,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:32:56,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 89 states have internal predecessors, (111), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-29 05:32:56,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 05:32:56,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:56,537 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-29 05:32:56,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:56,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:56,543 INFO L85 PathProgramCache]: Analyzing trace with hash 2064326179, now seen corresponding path program 1 times [2023-11-29 05:32:56,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:56,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136846205] [2023-11-29 05:32:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:56,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:32:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:32:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:32:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:32:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:32:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 05:32:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 05:32:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:32:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 05:32:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:32:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:32:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:32:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:32:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 05:32:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-29 05:32:57,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:57,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136846205] [2023-11-29 05:32:57,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136846205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:32:57,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:32:57,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:32:57,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587833059] [2023-11-29 05:32:57,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:32:57,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:32:57,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:57,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:32:57,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:32:57,391 INFO L87 Difference]: Start difference. First operand has 151 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 89 states have internal predecessors, (111), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:32:58,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:32:58,185 INFO L93 Difference]: Finished difference Result 300 states and 444 transitions. [2023-11-29 05:32:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:32:58,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 85 [2023-11-29 05:32:58,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:32:58,195 INFO L225 Difference]: With dead ends: 300 [2023-11-29 05:32:58,196 INFO L226 Difference]: Without dead ends: 149 [2023-11-29 05:32:58,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:32:58,203 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 105 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:32:58,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 91 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:32:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-29 05:32:58,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-11-29 05:32:58,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 88 states have internal predecessors, (107), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-29 05:32:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2023-11-29 05:32:58,255 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 85 [2023-11-29 05:32:58,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:32:58,256 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2023-11-29 05:32:58,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:32:58,256 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2023-11-29 05:32:58,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-29 05:32:58,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:32:58,261 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-29 05:32:58,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 05:32:58,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:32:58,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:32:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash 483743965, now seen corresponding path program 1 times [2023-11-29 05:32:58,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:32:58,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896041663] [2023-11-29 05:32:58,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:58,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:32:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:58,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:32:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:58,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:32:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:58,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:32:58,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:58,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:32:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:32:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-29 05:32:58,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:58,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 05:32:58,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:58,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:32:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:58,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 05:32:58,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:58,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:32:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:59,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:32:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:59,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:32:59,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:59,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:32:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:59,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 05:32:59,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-29 05:32:59,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:32:59,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896041663] [2023-11-29 05:32:59,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896041663] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:32:59,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308420424] [2023-11-29 05:32:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:32:59,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:32:59,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:32:59,039 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:32:59,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:32:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:32:59,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 2586 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:32:59,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:32:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 05:32:59,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:32:59,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308420424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:32:59,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:32:59,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-29 05:32:59,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512942180] [2023-11-29 05:32:59,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:32:59,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:32:59,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:32:59,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:32:59,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:32:59,791 INFO L87 Difference]: Start difference. First operand 149 states and 202 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:33:00,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:00,290 INFO L93 Difference]: Finished difference Result 287 states and 392 transitions. [2023-11-29 05:33:00,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:33:00,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 85 [2023-11-29 05:33:00,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:00,295 INFO L225 Difference]: With dead ends: 287 [2023-11-29 05:33:00,295 INFO L226 Difference]: Without dead ends: 151 [2023-11-29 05:33:00,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:33:00,298 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 38 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:00,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 487 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:33:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-29 05:33:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-29 05:33:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 90 states have internal predecessors, (108), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-11-29 05:33:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 206 transitions. [2023-11-29 05:33:00,321 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 206 transitions. Word has length 85 [2023-11-29 05:33:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:00,321 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 206 transitions. [2023-11-29 05:33:00,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:33:00,322 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 206 transitions. [2023-11-29 05:33:00,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-29 05:33:00,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:00,324 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-29 05:33:00,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:33:00,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:00,525 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:00,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:00,525 INFO L85 PathProgramCache]: Analyzing trace with hash 533175282, now seen corresponding path program 1 times [2023-11-29 05:33:00,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:00,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182830970] [2023-11-29 05:33:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:00,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 05:33:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:33:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:33:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 05:33:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:33:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:33:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-29 05:33:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 05:33:01,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:33:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:01,621 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-29 05:33:01,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:01,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182830970] [2023-11-29 05:33:01,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182830970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:01,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361569900] [2023-11-29 05:33:01,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:01,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:01,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:01,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:01,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:33:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:02,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 2603 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:33:02,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 56 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-29 05:33:02,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:33:02,543 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-29 05:33:02,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361569900] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:33:02,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:33:02,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 18 [2023-11-29 05:33:02,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115909348] [2023-11-29 05:33:02,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:33:02,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 05:33:02,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:02,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 05:33:02,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:33:02,547 INFO L87 Difference]: Start difference. First operand 151 states and 206 transitions. Second operand has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 16 states have internal predecessors, (97), 9 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (38), 8 states have call predecessors, (38), 9 states have call successors, (38) [2023-11-29 05:33:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:05,133 INFO L93 Difference]: Finished difference Result 275 states and 380 transitions. [2023-11-29 05:33:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:33:05,134 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 16 states have internal predecessors, (97), 9 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (38), 8 states have call predecessors, (38), 9 states have call successors, (38) Word has length 91 [2023-11-29 05:33:05,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:05,137 INFO L225 Difference]: With dead ends: 275 [2023-11-29 05:33:05,137 INFO L226 Difference]: Without dead ends: 151 [2023-11-29 05:33:05,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2023-11-29 05:33:05,140 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 337 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:05,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 362 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 05:33:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-29 05:33:05,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-29 05:33:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 90 states have internal predecessors, (107), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-11-29 05:33:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 205 transitions. [2023-11-29 05:33:05,167 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 205 transitions. Word has length 91 [2023-11-29 05:33:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:05,168 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 205 transitions. [2023-11-29 05:33:05,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 16 states have internal predecessors, (97), 9 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (38), 8 states have call predecessors, (38), 9 states have call successors, (38) [2023-11-29 05:33:05,168 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 205 transitions. [2023-11-29 05:33:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-29 05:33:05,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:05,171 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:05,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:33:05,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:05,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:05,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:05,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1646976168, now seen corresponding path program 1 times [2023-11-29 05:33:05,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:05,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089376945] [2023-11-29 05:33:05,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:05,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:05,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 05:33:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:33:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:33:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 05:33:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:33:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 05:33:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 05:33:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 05:33:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:33:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-29 05:33:06,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:06,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089376945] [2023-11-29 05:33:06,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089376945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:06,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520432633] [2023-11-29 05:33:06,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:06,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:06,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:06,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:06,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:33:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:06,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 2625 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:33:06,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-29 05:33:06,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:33:07,164 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-29 05:33:07,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520432633] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:07,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:33:07,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 8] total 21 [2023-11-29 05:33:07,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196346392] [2023-11-29 05:33:07,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:07,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:33:07,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:07,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:33:07,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:33:07,167 INFO L87 Difference]: Start difference. First operand 151 states and 205 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 05:33:08,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:08,144 INFO L93 Difference]: Finished difference Result 265 states and 358 transitions. [2023-11-29 05:33:08,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:33:08,145 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 99 [2023-11-29 05:33:08,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:08,147 INFO L225 Difference]: With dead ends: 265 [2023-11-29 05:33:08,147 INFO L226 Difference]: Without dead ends: 149 [2023-11-29 05:33:08,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:33:08,150 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 213 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:08,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 796 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 05:33:08,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-29 05:33:08,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-11-29 05:33:08,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 87 states have (on average 1.206896551724138) internal successors, (105), 88 states have internal predecessors, (105), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-29 05:33:08,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 200 transitions. [2023-11-29 05:33:08,175 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 200 transitions. Word has length 99 [2023-11-29 05:33:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:08,176 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 200 transitions. [2023-11-29 05:33:08,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 05:33:08,177 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 200 transitions. [2023-11-29 05:33:08,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-29 05:33:08,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:08,179 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:08,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 05:33:08,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:08,385 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:08,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:08,385 INFO L85 PathProgramCache]: Analyzing trace with hash 2094048883, now seen corresponding path program 1 times [2023-11-29 05:33:08,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:08,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301466690] [2023-11-29 05:33:08,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:08,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:08,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:09,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:09,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:09,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:09,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:09,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:09,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 05:33:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:33:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:09,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:33:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:09,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 05:33:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:10,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-29 05:33:10,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:10,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 05:33:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:10,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-29 05:33:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:10,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 05:33:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:10,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-29 05:33:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:10,144 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-29 05:33:10,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:10,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301466690] [2023-11-29 05:33:10,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301466690] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:10,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833251090] [2023-11-29 05:33:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:10,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:10,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:10,147 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:10,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:33:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:10,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 05:33:10,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:10,836 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 8 treesize of output 1 [2023-11-29 05:33:11,699 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 27 treesize of output 15 [2023-11-29 05:33:11,717 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 59 proven. 5 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-29 05:33:11,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:33:11,964 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-29 05:33:11,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833251090] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:33:11,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:33:11,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 9] total 19 [2023-11-29 05:33:11,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385783665] [2023-11-29 05:33:11,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:33:11,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:33:11,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:11,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:33:11,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:33:11,968 INFO L87 Difference]: Start difference. First operand 149 states and 200 transitions. Second operand has 19 states, 19 states have (on average 4.0) internal successors, (76), 16 states have internal predecessors, (76), 8 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-29 05:33:16,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:16,106 INFO L93 Difference]: Finished difference Result 369 states and 504 transitions. [2023-11-29 05:33:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 05:33:16,107 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 16 states have internal predecessors, (76), 8 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) Word has length 101 [2023-11-29 05:33:16,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:16,110 INFO L225 Difference]: With dead ends: 369 [2023-11-29 05:33:16,110 INFO L226 Difference]: Without dead ends: 257 [2023-11-29 05:33:16,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 207 SyntacticMatches, 17 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 05:33:16,113 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 266 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:16,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 427 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-29 05:33:16,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2023-11-29 05:33:16,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 247. [2023-11-29 05:33:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 148 states have (on average 1.1824324324324325) internal successors, (175), 149 states have internal predecessors, (175), 77 states have call successors, (77), 21 states have call predecessors, (77), 21 states have return successors, (80), 76 states have call predecessors, (80), 75 states have call successors, (80) [2023-11-29 05:33:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 332 transitions. [2023-11-29 05:33:16,152 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 332 transitions. Word has length 101 [2023-11-29 05:33:16,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:16,153 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 332 transitions. [2023-11-29 05:33:16,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 16 states have internal predecessors, (76), 8 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (22), 7 states have call predecessors, (22), 7 states have call successors, (22) [2023-11-29 05:33:16,153 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 332 transitions. [2023-11-29 05:33:16,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-29 05:33:16,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:16,155 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:16,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:33:16,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:16,356 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:16,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash -990974237, now seen corresponding path program 1 times [2023-11-29 05:33:16,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:16,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107256586] [2023-11-29 05:33:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:16,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-29 05:33:17,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:33:17,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:33:17,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-29 05:33:17,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:33:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:33:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 05:33:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:33:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-29 05:33:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:17,592 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 05:33:17,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:17,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107256586] [2023-11-29 05:33:17,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107256586] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:17,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659180625] [2023-11-29 05:33:17,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:17,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:17,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:17,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:17,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:33:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:18,090 INFO L262 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 05:33:18,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:18,185 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 05:33:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-29 05:33:18,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:33:18,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659180625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:18,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:33:18,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 20 [2023-11-29 05:33:18,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624707498] [2023-11-29 05:33:18,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:18,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:33:18,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:18,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:33:18,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:33:18,433 INFO L87 Difference]: Start difference. First operand 247 states and 332 transitions. Second operand has 12 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 05:33:23,885 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 05:33:27,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:33:31,954 WARN L539 Checker$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 05:33:36,835 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 05:33:37,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:37,036 INFO L93 Difference]: Finished difference Result 606 states and 808 transitions. [2023-11-29 05:33:37,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:33:37,037 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 109 [2023-11-29 05:33:37,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:37,040 INFO L225 Difference]: With dead ends: 606 [2023-11-29 05:33:37,040 INFO L226 Difference]: Without dead ends: 372 [2023-11-29 05:33:37,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:33:37,042 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 198 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 35 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:37,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 903 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 666 Invalid, 4 Unknown, 0 Unchecked, 18.4s Time] [2023-11-29 05:33:37,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2023-11-29 05:33:37,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 367. [2023-11-29 05:33:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 224 states have (on average 1.1875) internal successors, (266), 228 states have internal predecessors, (266), 106 states have call successors, (106), 33 states have call predecessors, (106), 36 states have return successors, (115), 105 states have call predecessors, (115), 102 states have call successors, (115) [2023-11-29 05:33:37,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 487 transitions. [2023-11-29 05:33:37,091 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 487 transitions. Word has length 109 [2023-11-29 05:33:37,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:37,091 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 487 transitions. [2023-11-29 05:33:37,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-29 05:33:37,092 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 487 transitions. [2023-11-29 05:33:37,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 05:33:37,093 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:37,093 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:37,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:33:37,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:37,294 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:37,294 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:37,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1773071845, now seen corresponding path program 1 times [2023-11-29 05:33:37,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:37,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503948348] [2023-11-29 05:33:37,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:37,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:37,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:37,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:37,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:37,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:37,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:38,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 05:33:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:38,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:33:38,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:38,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:33:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:38,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:33:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:38,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 05:33:38,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:38,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 05:33:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:38,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 05:33:38,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:38,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 05:33:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:38,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:33:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-29 05:33:38,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:38,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503948348] [2023-11-29 05:33:38,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503948348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:38,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003518796] [2023-11-29 05:33:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:38,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:38,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:38,100 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:38,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:33:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:38,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 2666 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:33:38,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 05:33:38,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:33:38,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003518796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:38,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:33:38,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 11 [2023-11-29 05:33:38,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754577227] [2023-11-29 05:33:38,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:38,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:33:38,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:38,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:33:38,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:33:38,741 INFO L87 Difference]: Start difference. First operand 367 states and 487 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:33:39,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:39,843 INFO L93 Difference]: Finished difference Result 761 states and 1038 transitions. [2023-11-29 05:33:39,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:33:39,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 113 [2023-11-29 05:33:39,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:39,849 INFO L225 Difference]: With dead ends: 761 [2023-11-29 05:33:39,849 INFO L226 Difference]: Without dead ends: 413 [2023-11-29 05:33:39,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:33:39,852 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 39 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:39,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 680 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 05:33:39,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-11-29 05:33:39,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 382. [2023-11-29 05:33:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 239 states have (on average 1.200836820083682) internal successors, (287), 243 states have internal predecessors, (287), 106 states have call successors, (106), 33 states have call predecessors, (106), 36 states have return successors, (115), 105 states have call predecessors, (115), 102 states have call successors, (115) [2023-11-29 05:33:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 508 transitions. [2023-11-29 05:33:39,910 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 508 transitions. Word has length 113 [2023-11-29 05:33:39,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:39,910 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 508 transitions. [2023-11-29 05:33:39,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:33:39,911 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 508 transitions. [2023-11-29 05:33:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-29 05:33:39,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:39,913 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:39,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 05:33:40,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:40,113 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:40,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash -448215651, now seen corresponding path program 1 times [2023-11-29 05:33:40,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:40,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071014640] [2023-11-29 05:33:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:40,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:40,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:40,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:40,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 05:33:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-29 05:33:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:41,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-29 05:33:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:41,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-29 05:33:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:41,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-29 05:33:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:41,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-29 05:33:41,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:41,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-29 05:33:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:41,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-29 05:33:41,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:33:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:41,119 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-29 05:33:41,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:41,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071014640] [2023-11-29 05:33:41,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071014640] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:41,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667098366] [2023-11-29 05:33:41,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:41,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:41,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:41,121 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:41,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:33:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:41,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 05:33:41,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-29 05:33:41,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:33:41,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667098366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:41,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:33:41,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-29 05:33:41,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828520005] [2023-11-29 05:33:41,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:41,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:33:41,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:41,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:33:41,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:33:41,709 INFO L87 Difference]: Start difference. First operand 382 states and 508 transitions. Second operand has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:33:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:43,051 INFO L93 Difference]: Finished difference Result 757 states and 1013 transitions. [2023-11-29 05:33:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:33:43,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2023-11-29 05:33:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:43,055 INFO L225 Difference]: With dead ends: 757 [2023-11-29 05:33:43,056 INFO L226 Difference]: Without dead ends: 394 [2023-11-29 05:33:43,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:33:43,059 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 13 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:43,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1371 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 05:33:43,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2023-11-29 05:33:43,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 383. [2023-11-29 05:33:43,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 240 states have (on average 1.2) internal successors, (288), 244 states have internal predecessors, (288), 106 states have call successors, (106), 33 states have call predecessors, (106), 36 states have return successors, (115), 105 states have call predecessors, (115), 102 states have call successors, (115) [2023-11-29 05:33:43,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 509 transitions. [2023-11-29 05:33:43,113 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 509 transitions. Word has length 113 [2023-11-29 05:33:43,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:43,113 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 509 transitions. [2023-11-29 05:33:43,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.857142857142858) internal successors, (62), 8 states have internal predecessors, (62), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-29 05:33:43,114 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 509 transitions. [2023-11-29 05:33:43,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:33:43,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:43,116 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:43,125 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:33:43,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:43,316 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:43,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:43,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1650786872, now seen corresponding path program 1 times [2023-11-29 05:33:43,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:43,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198718509] [2023-11-29 05:33:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:43,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:33:43,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:33:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:33:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:33:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 05:33:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 05:33:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:33:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 05:33:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:33:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:43,624 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-29 05:33:43,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:43,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198718509] [2023-11-29 05:33:43,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198718509] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:43,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237881320] [2023-11-29 05:33:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:43,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:43,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:43,625 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:43,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:33:44,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:44,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 2666 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:33:44,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 05:33:44,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:33:44,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237881320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:44,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:33:44,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-29 05:33:44,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726388066] [2023-11-29 05:33:44,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:44,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:33:44,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:44,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:33:44,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:33:44,117 INFO L87 Difference]: Start difference. First operand 383 states and 509 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:33:44,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:44,842 INFO L93 Difference]: Finished difference Result 770 states and 1035 transitions. [2023-11-29 05:33:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:33:44,842 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 115 [2023-11-29 05:33:44,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:44,845 INFO L225 Difference]: With dead ends: 770 [2023-11-29 05:33:44,845 INFO L226 Difference]: Without dead ends: 406 [2023-11-29 05:33:44,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:33:44,847 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 9 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:44,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 547 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:33:44,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-29 05:33:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 389. [2023-11-29 05:33:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 246 states have (on average 1.1951219512195121) internal successors, (294), 250 states have internal predecessors, (294), 106 states have call successors, (106), 33 states have call predecessors, (106), 36 states have return successors, (115), 105 states have call predecessors, (115), 102 states have call successors, (115) [2023-11-29 05:33:44,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 515 transitions. [2023-11-29 05:33:44,884 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 515 transitions. Word has length 115 [2023-11-29 05:33:44,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:44,884 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 515 transitions. [2023-11-29 05:33:44,884 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:33:44,884 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 515 transitions. [2023-11-29 05:33:44,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:33:44,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:44,886 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:44,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-29 05:33:45,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:45,087 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:45,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:45,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1651367284, now seen corresponding path program 1 times [2023-11-29 05:33:45,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:45,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528881051] [2023-11-29 05:33:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:45,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:33:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:33:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:33:45,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:33:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 05:33:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 05:33:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:33:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 05:33:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:33:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,381 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-29 05:33:45,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528881051] [2023-11-29 05:33:45,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528881051] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:45,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366630251] [2023-11-29 05:33:45,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:45,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:45,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:45,383 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:45,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:33:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:45,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:33:45,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-29 05:33:45,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:33:45,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366630251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:45,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:33:45,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-29 05:33:45,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229399051] [2023-11-29 05:33:45,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:45,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:33:45,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:45,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:33:45,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:33:45,866 INFO L87 Difference]: Start difference. First operand 389 states and 515 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:33:46,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:46,409 INFO L93 Difference]: Finished difference Result 798 states and 1068 transitions. [2023-11-29 05:33:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:33:46,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 115 [2023-11-29 05:33:46,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:46,412 INFO L225 Difference]: With dead ends: 798 [2023-11-29 05:33:46,412 INFO L226 Difference]: Without dead ends: 428 [2023-11-29 05:33:46,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:33:46,414 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 28 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:46,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 561 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:33:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-11-29 05:33:46,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 389. [2023-11-29 05:33:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 246 states have (on average 1.1829268292682926) internal successors, (291), 250 states have internal predecessors, (291), 106 states have call successors, (106), 33 states have call predecessors, (106), 36 states have return successors, (115), 105 states have call predecessors, (115), 102 states have call successors, (115) [2023-11-29 05:33:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 512 transitions. [2023-11-29 05:33:46,448 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 512 transitions. Word has length 115 [2023-11-29 05:33:46,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:46,448 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 512 transitions. [2023-11-29 05:33:46,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:33:46,448 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 512 transitions. [2023-11-29 05:33:46,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-29 05:33:46,449 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:46,449 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:46,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:33:46,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 05:33:46,650 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:46,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:46,651 INFO L85 PathProgramCache]: Analyzing trace with hash 656673586, now seen corresponding path program 1 times [2023-11-29 05:33:46,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:46,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389773964] [2023-11-29 05:33:46,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:46,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:33:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:33:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:33:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:33:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 05:33:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-29 05:33:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:33:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 05:33:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:33:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,460 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 05:33:47,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:47,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389773964] [2023-11-29 05:33:47,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389773964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:47,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211450868] [2023-11-29 05:33:47,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:47,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:47,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:47,462 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:47,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:33:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:47,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 05:33:47,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:48,014 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 75 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-29 05:33:48,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:33:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 05:33:48,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211450868] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:33:48,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:33:48,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 11] total 22 [2023-11-29 05:33:48,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557347072] [2023-11-29 05:33:48,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:33:48,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 05:33:48,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:48,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 05:33:48,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:33:48,286 INFO L87 Difference]: Start difference. First operand 389 states and 512 transitions. Second operand has 22 states, 16 states have (on average 5.75) internal successors, (92), 17 states have internal predecessors, (92), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-29 05:33:51,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:51,209 INFO L93 Difference]: Finished difference Result 716 states and 949 transitions. [2023-11-29 05:33:51,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:33:51,209 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 5.75) internal successors, (92), 17 states have internal predecessors, (92), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 115 [2023-11-29 05:33:51,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:51,212 INFO L225 Difference]: With dead ends: 716 [2023-11-29 05:33:51,212 INFO L226 Difference]: Without dead ends: 423 [2023-11-29 05:33:51,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 05:33:51,214 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 149 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 2597 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:51,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 804 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2597 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 05:33:51,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2023-11-29 05:33:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 393. [2023-11-29 05:33:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 249 states have (on average 1.180722891566265) internal successors, (294), 254 states have internal predecessors, (294), 106 states have call successors, (106), 33 states have call predecessors, (106), 37 states have return successors, (119), 105 states have call predecessors, (119), 102 states have call successors, (119) [2023-11-29 05:33:51,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 519 transitions. [2023-11-29 05:33:51,248 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 519 transitions. Word has length 115 [2023-11-29 05:33:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:51,249 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 519 transitions. [2023-11-29 05:33:51,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 5.75) internal successors, (92), 17 states have internal predecessors, (92), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-29 05:33:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 519 transitions. [2023-11-29 05:33:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-29 05:33:51,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:51,250 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 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] [2023-11-29 05:33:51,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 05:33:51,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 05:33:51,451 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:51,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:51,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1206824302, now seen corresponding path program 1 times [2023-11-29 05:33:51,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:51,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462362060] [2023-11-29 05:33:51,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:51,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:51,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:51,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:51,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:33:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:33:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:33:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:33:51,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:33:51,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:33:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-29 05:33:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:33:51,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-29 05:33:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:51,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-29 05:33:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:52,016 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-29 05:33:52,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:52,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462362060] [2023-11-29 05:33:52,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462362060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:52,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:33:52,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:33:52,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348966996] [2023-11-29 05:33:52,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:52,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:33:52,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:52,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:33:52,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:33:52,018 INFO L87 Difference]: Start difference. First operand 393 states and 519 transitions. Second operand has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 05:33:53,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:53,500 INFO L93 Difference]: Finished difference Result 424 states and 560 transitions. [2023-11-29 05:33:53,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:33:53,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 118 [2023-11-29 05:33:53,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:53,504 INFO L225 Difference]: With dead ends: 424 [2023-11-29 05:33:53,504 INFO L226 Difference]: Without dead ends: 422 [2023-11-29 05:33:53,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:33:53,505 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 132 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 1058 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:53,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 371 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1058 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 05:33:53,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-29 05:33:53,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 418. [2023-11-29 05:33:53,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 264 states have (on average 1.1704545454545454) internal successors, (309), 272 states have internal predecessors, (309), 110 states have call successors, (110), 36 states have call predecessors, (110), 43 states have return successors, (133), 109 states have call predecessors, (133), 106 states have call successors, (133) [2023-11-29 05:33:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 552 transitions. [2023-11-29 05:33:53,538 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 552 transitions. Word has length 118 [2023-11-29 05:33:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:53,539 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 552 transitions. [2023-11-29 05:33:53,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 05:33:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 552 transitions. [2023-11-29 05:33:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 05:33:53,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:53,541 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:53,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 05:33:53,541 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:53,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:53,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1730376301, now seen corresponding path program 1 times [2023-11-29 05:33:53,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:53,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923364999] [2023-11-29 05:33:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:53,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:53,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:54,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:54,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:33:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:33:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:33:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:33:54,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:33:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 05:33:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:33:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:33:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 05:33:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-29 05:33:54,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:54,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923364999] [2023-11-29 05:33:54,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923364999] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:33:54,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714186937] [2023-11-29 05:33:54,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:54,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:33:54,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:33:54,145 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:33:54,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:33:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:54,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:33:54,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:33:54,660 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-29 05:33:54,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:33:54,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714186937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:54,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:33:54,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-11-29 05:33:54,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211966776] [2023-11-29 05:33:54,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:54,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:33:54,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:54,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:33:54,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:33:54,662 INFO L87 Difference]: Start difference. First operand 418 states and 552 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:33:55,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:55,702 INFO L93 Difference]: Finished difference Result 732 states and 976 transitions. [2023-11-29 05:33:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:33:55,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2023-11-29 05:33:55,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:55,705 INFO L225 Difference]: With dead ends: 732 [2023-11-29 05:33:55,705 INFO L226 Difference]: Without dead ends: 418 [2023-11-29 05:33:55,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:33:55,707 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 18 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:55,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 680 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 05:33:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-29 05:33:55,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 418. [2023-11-29 05:33:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 264 states have (on average 1.1628787878787878) internal successors, (307), 272 states have internal predecessors, (307), 110 states have call successors, (110), 36 states have call predecessors, (110), 43 states have return successors, (133), 109 states have call predecessors, (133), 106 states have call successors, (133) [2023-11-29 05:33:55,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 550 transitions. [2023-11-29 05:33:55,741 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 550 transitions. Word has length 117 [2023-11-29 05:33:55,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:55,741 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 550 transitions. [2023-11-29 05:33:55,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:33:55,742 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 550 transitions. [2023-11-29 05:33:55,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-29 05:33:55,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:55,743 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:55,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 05:33:55,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 05:33:55,944 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:55,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:55,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1688571989, now seen corresponding path program 1 times [2023-11-29 05:33:55,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:55,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554257847] [2023-11-29 05:33:55,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:55,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:56,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:33:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:33:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:33:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:33:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:33:56,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 05:33:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:33:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:33:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-29 05:33:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:56,675 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-29 05:33:56,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:33:56,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554257847] [2023-11-29 05:33:56,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554257847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:33:56,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:33:56,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-29 05:33:56,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448889716] [2023-11-29 05:33:56,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:33:56,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:33:56,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:33:56,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:33:56,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:33:56,677 INFO L87 Difference]: Start difference. First operand 418 states and 550 transitions. Second operand has 10 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:33:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:33:58,255 INFO L93 Difference]: Finished difference Result 716 states and 933 transitions. [2023-11-29 05:33:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:33:58,256 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2023-11-29 05:33:58,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:33:58,259 INFO L225 Difference]: With dead ends: 716 [2023-11-29 05:33:58,259 INFO L226 Difference]: Without dead ends: 422 [2023-11-29 05:33:58,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-29 05:33:58,261 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 115 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:33:58,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 413 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1265 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 05:33:58,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-29 05:33:58,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 418. [2023-11-29 05:33:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 264 states have (on average 1.1628787878787878) internal successors, (307), 272 states have internal predecessors, (307), 110 states have call successors, (110), 36 states have call predecessors, (110), 43 states have return successors, (132), 109 states have call predecessors, (132), 106 states have call successors, (132) [2023-11-29 05:33:58,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 549 transitions. [2023-11-29 05:33:58,294 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 549 transitions. Word has length 117 [2023-11-29 05:33:58,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:33:58,294 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 549 transitions. [2023-11-29 05:33:58,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:33:58,295 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 549 transitions. [2023-11-29 05:33:58,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-29 05:33:58,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:33:58,296 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:33:58,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-29 05:33:58,296 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:33:58,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:33:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash 735259812, now seen corresponding path program 1 times [2023-11-29 05:33:58,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:33:58,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947913817] [2023-11-29 05:33:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:33:58,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:33:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:59,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:59,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:33:59,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:59,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:33:59,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:59,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:33:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:59,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:33:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:33:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:33:59,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:33:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:00,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:34:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:00,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:34:00,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:00,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:34:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:00,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 05:34:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:00,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:34:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:00,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:34:00,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:00,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-29 05:34:00,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:00,312 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-29 05:34:00,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:00,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947913817] [2023-11-29 05:34:00,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947913817] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:00,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276093722] [2023-11-29 05:34:00,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:00,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:00,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:00,316 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:34:00,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:34:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:00,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-29 05:34:00,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:34:00,936 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 05:34:01,678 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-29 05:34:01,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:34:01,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276093722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:01,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:34:01,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [12] total 24 [2023-11-29 05:34:01,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177474228] [2023-11-29 05:34:01,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:01,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:34:01,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:01,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:34:01,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:34:01,681 INFO L87 Difference]: Start difference. First operand 418 states and 549 transitions. Second operand has 14 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 05:34:06,232 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 05:34:11,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:34:15,736 WARN L539 Checker$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 05:34:16,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:34:16,938 INFO L93 Difference]: Finished difference Result 779 states and 1022 transitions. [2023-11-29 05:34:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:34:16,939 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 119 [2023-11-29 05:34:16,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:34:16,942 INFO L225 Difference]: With dead ends: 779 [2023-11-29 05:34:16,942 INFO L226 Difference]: Without dead ends: 397 [2023-11-29 05:34:16,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 122 SyntacticMatches, 12 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2023-11-29 05:34:16,944 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 195 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 86 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:34:16,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 911 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 957 Invalid, 3 Unknown, 0 Unchecked, 15.1s Time] [2023-11-29 05:34:16,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-29 05:34:16,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2023-11-29 05:34:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 252 states have (on average 1.1468253968253967) internal successors, (289), 257 states have internal predecessors, (289), 106 states have call successors, (106), 34 states have call predecessors, (106), 38 states have return successors, (118), 105 states have call predecessors, (118), 102 states have call successors, (118) [2023-11-29 05:34:16,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 513 transitions. [2023-11-29 05:34:16,997 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 513 transitions. Word has length 119 [2023-11-29 05:34:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:16,997 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 513 transitions. [2023-11-29 05:34:16,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 05:34:16,998 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 513 transitions. [2023-11-29 05:34:16,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-29 05:34:16,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:16,999 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:17,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:34:17,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:34:17,200 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:34:17,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:17,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1100884650, now seen corresponding path program 1 times [2023-11-29 05:34:17,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:17,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137721468] [2023-11-29 05:34:17,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:17,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:34:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:34:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:34:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:34:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:34:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:34:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:34:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:34:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:34:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:34:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 05:34:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-29 05:34:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-29 05:34:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-29 05:34:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:17,964 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-29 05:34:17,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:17,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137721468] [2023-11-29 05:34:17,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137721468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:17,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635308459] [2023-11-29 05:34:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:17,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:17,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:17,966 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:34:17,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:34:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:18,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 05:34:18,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:34:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 54 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-29 05:34:18,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:34:18,868 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-29 05:34:18,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635308459] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:34:18,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:34:18,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 11] total 22 [2023-11-29 05:34:18,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247678264] [2023-11-29 05:34:18,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:34:18,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 05:34:18,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:18,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 05:34:18,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2023-11-29 05:34:18,871 INFO L87 Difference]: Start difference. First operand 397 states and 513 transitions. Second operand has 22 states, 16 states have (on average 5.4375) internal successors, (87), 17 states have internal predecessors, (87), 5 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-29 05:34:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:34:22,517 INFO L93 Difference]: Finished difference Result 772 states and 1002 transitions. [2023-11-29 05:34:22,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:34:22,518 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 5.4375) internal successors, (87), 17 states have internal predecessors, (87), 5 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 123 [2023-11-29 05:34:22,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:34:22,521 INFO L225 Difference]: With dead ends: 772 [2023-11-29 05:34:22,521 INFO L226 Difference]: Without dead ends: 424 [2023-11-29 05:34:22,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 05:34:22,523 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 151 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 2990 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 3020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:34:22,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 924 Invalid, 3020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2990 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 05:34:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-11-29 05:34:22,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 401. [2023-11-29 05:34:22,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 255 states have (on average 1.1450980392156862) internal successors, (292), 261 states have internal predecessors, (292), 106 states have call successors, (106), 34 states have call predecessors, (106), 39 states have return successors, (119), 105 states have call predecessors, (119), 102 states have call successors, (119) [2023-11-29 05:34:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 517 transitions. [2023-11-29 05:34:22,556 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 517 transitions. Word has length 123 [2023-11-29 05:34:22,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:22,556 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 517 transitions. [2023-11-29 05:34:22,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 5.4375) internal successors, (87), 17 states have internal predecessors, (87), 5 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-29 05:34:22,557 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 517 transitions. [2023-11-29 05:34:22,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 05:34:22,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:22,559 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:22,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:34:22,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:34:22,761 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:34:22,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:22,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1630231435, now seen corresponding path program 1 times [2023-11-29 05:34:22,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:22,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890347146] [2023-11-29 05:34:22,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:22,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:22,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:34:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:34:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:34:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:34:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:34:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:34:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:34:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:34:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:34:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:34:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 05:34:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:34:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 05:34:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 05:34:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-29 05:34:24,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890347146] [2023-11-29 05:34:24,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890347146] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:24,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900456680] [2023-11-29 05:34:24,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:24,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:24,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:24,707 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:34:24,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:34:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:25,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 05:34:25,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:34:25,340 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 11 treesize of output 7 [2023-11-29 05:34:25,344 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 11 treesize of output 7 [2023-11-29 05:34:26,150 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-29 05:34:26,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:34:26,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900456680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:26,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:34:26,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [12] total 20 [2023-11-29 05:34:26,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248970553] [2023-11-29 05:34:26,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:26,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:34:26,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:26,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:34:26,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:34:26,152 INFO L87 Difference]: Start difference. First operand 401 states and 517 transitions. Second operand has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 05:34:28,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:34:28,720 INFO L93 Difference]: Finished difference Result 1084 states and 1405 transitions. [2023-11-29 05:34:28,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:34:28,721 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 125 [2023-11-29 05:34:28,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:34:28,725 INFO L225 Difference]: With dead ends: 1084 [2023-11-29 05:34:28,725 INFO L226 Difference]: Without dead ends: 775 [2023-11-29 05:34:28,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 136 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:34:28,727 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 133 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:34:28,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1206 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 775 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 05:34:28,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2023-11-29 05:34:28,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 642. [2023-11-29 05:34:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 414 states have (on average 1.1497584541062802) internal successors, (476), 425 states have internal predecessors, (476), 167 states have call successors, (167), 51 states have call predecessors, (167), 60 states have return successors, (193), 165 states have call predecessors, (193), 161 states have call successors, (193) [2023-11-29 05:34:28,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 836 transitions. [2023-11-29 05:34:28,791 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 836 transitions. Word has length 125 [2023-11-29 05:34:28,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:28,791 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 836 transitions. [2023-11-29 05:34:28,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2023-11-29 05:34:28,792 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 836 transitions. [2023-11-29 05:34:28,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-29 05:34:28,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:28,794 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:34:28,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:34:28,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:34:28,994 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:34:28,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:28,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1401257849, now seen corresponding path program 1 times [2023-11-29 05:34:28,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:28,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785652206] [2023-11-29 05:34:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:28,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:34:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:34:29,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:34:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:34:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:34:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:34:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:34:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:34:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:34:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:34:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-29 05:34:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:34:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-29 05:34:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-29 05:34:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,260 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-29 05:34:29,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:29,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785652206] [2023-11-29 05:34:29,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785652206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:29,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489441248] [2023-11-29 05:34:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:29,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:29,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:29,261 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:34:29,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:34:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:29,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 2682 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:34:29,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:34:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-29 05:34:29,760 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:34:29,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489441248] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:34:29,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:34:29,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-29 05:34:29,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420861397] [2023-11-29 05:34:29,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:34:29,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:34:29,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:34:29,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:34:29,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:34:29,762 INFO L87 Difference]: Start difference. First operand 642 states and 836 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:34:30,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:34:30,342 INFO L93 Difference]: Finished difference Result 970 states and 1263 transitions. [2023-11-29 05:34:30,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:34:30,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 125 [2023-11-29 05:34:30,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:34:30,345 INFO L225 Difference]: With dead ends: 970 [2023-11-29 05:34:30,345 INFO L226 Difference]: Without dead ends: 422 [2023-11-29 05:34:30,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:34:30,348 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 6 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:34:30,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 544 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:34:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2023-11-29 05:34:30,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 413. [2023-11-29 05:34:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 265 states have (on average 1.139622641509434) internal successors, (302), 272 states have internal predecessors, (302), 107 states have call successors, (107), 35 states have call predecessors, (107), 40 states have return successors, (120), 105 states have call predecessors, (120), 103 states have call successors, (120) [2023-11-29 05:34:30,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 529 transitions. [2023-11-29 05:34:30,400 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 529 transitions. Word has length 125 [2023-11-29 05:34:30,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:34:30,400 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 529 transitions. [2023-11-29 05:34:30,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-29 05:34:30,401 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 529 transitions. [2023-11-29 05:34:30,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 05:34:30,402 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:34:30,402 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:30,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 05:34:30,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:34:30,603 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:34:30,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:34:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1541569993, now seen corresponding path program 1 times [2023-11-29 05:34:30,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:34:30,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754168099] [2023-11-29 05:34:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:30,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:34:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:34:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:31,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:34:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:34:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:31,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:34:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:31,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:34:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:32,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:34:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:32,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:34:32,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:32,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:34:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:32,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:34:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:34:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:32,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:34:32,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:32,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:34:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:34:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:32,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:34:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:32,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 05:34:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:32,535 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 05:34:32,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:34:32,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754168099] [2023-11-29 05:34:32,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754168099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:34:32,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284387942] [2023-11-29 05:34:32,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:34:32,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:34:32,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:34:32,537 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:34:32,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:34:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:34:33,037 INFO L262 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 05:34:33,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:35:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 78 proven. 11 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-29 05:35:16,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:35:17,323 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 28 proven. 13 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 05:35:17,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284387942] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:35:17,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:35:17,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 9] total 28 [2023-11-29 05:35:17,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389295289] [2023-11-29 05:35:17,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:35:17,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 05:35:17,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:35:17,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 05:35:17,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=658, Unknown=1, NotChecked=0, Total=756 [2023-11-29 05:35:17,326 INFO L87 Difference]: Start difference. First operand 413 states and 529 transitions. Second operand has 28 states, 28 states have (on average 5.0) internal successors, (140), 26 states have internal predecessors, (140), 6 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2023-11-29 05:35:22,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:35:27,507 WARN L539 Checker$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 05:35:31,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:35:35,611 WARN L539 Checker$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 05:35:39,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:35:43,749 WARN L539 Checker$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 05:35:47,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:35:52,071 WARN L539 Checker$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 05:35:56,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:36:00,133 WARN L539 Checker$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 05:36:04,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:36:08,185 WARN L539 Checker$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 05:36:12,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:36:16,302 WARN L539 Checker$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 05:36:30,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:36:34,733 WARN L539 Checker$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 05:36:39,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:36:43,316 WARN L539 Checker$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 05:36:43,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:43,529 INFO L93 Difference]: Finished difference Result 840 states and 1045 transitions. [2023-11-29 05:36:43,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:36:43,530 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 26 states have internal predecessors, (140), 6 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) Word has length 128 [2023-11-29 05:36:43,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:43,534 INFO L225 Difference]: With dead ends: 840 [2023-11-29 05:36:43,534 INFO L226 Difference]: Without dead ends: 514 [2023-11-29 05:36:43,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 269 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 52.4s TimeCoverageRelationStatistics Valid=201, Invalid=1128, Unknown=3, NotChecked=0, Total=1332 [2023-11-29 05:36:43,536 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 364 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 2598 mSolverCounterSat, 179 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 2795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 2598 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 77.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:43,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 356 Invalid, 2795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 2598 Invalid, 18 Unknown, 0 Unchecked, 77.8s Time] [2023-11-29 05:36:43,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2023-11-29 05:36:43,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 506. [2023-11-29 05:36:43,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 328 states have (on average 1.1341463414634145) internal successors, (372), 337 states have internal predecessors, (372), 119 states have call successors, (119), 51 states have call predecessors, (119), 58 states have return successors, (131), 117 states have call predecessors, (131), 115 states have call successors, (131) [2023-11-29 05:36:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 622 transitions. [2023-11-29 05:36:43,618 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 622 transitions. Word has length 128 [2023-11-29 05:36:43,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:43,618 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 622 transitions. [2023-11-29 05:36:43,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.0) internal successors, (140), 26 states have internal predecessors, (140), 6 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2023-11-29 05:36:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 622 transitions. [2023-11-29 05:36:43,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 05:36:43,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:43,620 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 05:36:43,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:36:43,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:36:43,821 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:43,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:43,821 INFO L85 PathProgramCache]: Analyzing trace with hash 20147121, now seen corresponding path program 1 times [2023-11-29 05:36:43,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:43,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053928542] [2023-11-29 05:36:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:43,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:36:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:36:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:36:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:36:45,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:36:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:36:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:36:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:36:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:36:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:36:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:36:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:36:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:36:45,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:36:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 05:36:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,514 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-29 05:36:45,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:36:45,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053928542] [2023-11-29 05:36:45,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053928542] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:36:45,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449504420] [2023-11-29 05:36:45,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:45,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:36:45,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:36:45,516 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:36:45,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:36:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:36:45,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 05:36:45,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:36:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 21 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-29 05:36:47,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:36:48,829 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-11-29 05:36:48,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2023-11-29 05:36:48,971 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 05:36:48,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449504420] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:36:48,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:36:48,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 14] total 36 [2023-11-29 05:36:48,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442555639] [2023-11-29 05:36:48,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:36:48,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-29 05:36:48,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:36:48,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-29 05:36:48,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1122, Unknown=0, NotChecked=0, Total=1260 [2023-11-29 05:36:48,974 INFO L87 Difference]: Start difference. First operand 506 states and 622 transitions. Second operand has 36 states, 36 states have (on average 4.388888888888889) internal successors, (158), 32 states have internal predecessors, (158), 9 states have call successors, (44), 7 states have call predecessors, (44), 7 states have return successors, (40), 9 states have call predecessors, (40), 8 states have call successors, (40) [2023-11-29 05:36:59,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:36:59,293 INFO L93 Difference]: Finished difference Result 1484 states and 1881 transitions. [2023-11-29 05:36:59,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-29 05:36:59,294 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.388888888888889) internal successors, (158), 32 states have internal predecessors, (158), 9 states have call successors, (44), 7 states have call predecessors, (44), 7 states have return successors, (40), 9 states have call predecessors, (40), 8 states have call successors, (40) Word has length 128 [2023-11-29 05:36:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:36:59,299 INFO L225 Difference]: With dead ends: 1484 [2023-11-29 05:36:59,299 INFO L226 Difference]: Without dead ends: 1035 [2023-11-29 05:36:59,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 249 SyntacticMatches, 19 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=623, Invalid=3283, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 05:36:59,302 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 467 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 4631 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 4885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 4631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:36:59,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 791 Invalid, 4885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 4631 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-29 05:36:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2023-11-29 05:36:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 945. [2023-11-29 05:36:59,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 618 states have (on average 1.1197411003236246) internal successors, (692), 637 states have internal predecessors, (692), 222 states have call successors, (222), 90 states have call predecessors, (222), 104 states have return successors, (257), 217 states have call predecessors, (257), 215 states have call successors, (257) [2023-11-29 05:36:59,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1171 transitions. [2023-11-29 05:36:59,473 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1171 transitions. Word has length 128 [2023-11-29 05:36:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:36:59,473 INFO L495 AbstractCegarLoop]: Abstraction has 945 states and 1171 transitions. [2023-11-29 05:36:59,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.388888888888889) internal successors, (158), 32 states have internal predecessors, (158), 9 states have call successors, (44), 7 states have call predecessors, (44), 7 states have return successors, (40), 9 states have call predecessors, (40), 8 states have call successors, (40) [2023-11-29 05:36:59,473 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1171 transitions. [2023-11-29 05:36:59,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 05:36:59,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:36:59,476 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 05:36:59,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 05:36:59,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:36:59,676 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:36:59,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:36:59,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2072596917, now seen corresponding path program 1 times [2023-11-29 05:36:59,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:36:59,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530097389] [2023-11-29 05:36:59,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:36:59,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:36:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:37:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:37:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:37:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:37:00,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:37:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:37:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:37:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:37:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:37:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:37:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:37:00,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:37:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 05:37:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:00,252 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 05:37:00,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:00,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530097389] [2023-11-29 05:37:00,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530097389] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:00,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:00,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:37:00,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5485321] [2023-11-29 05:37:00,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:00,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:37:00,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:00,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:37:00,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:37:00,253 INFO L87 Difference]: Start difference. First operand 945 states and 1171 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 05:37:01,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:01,570 INFO L93 Difference]: Finished difference Result 1517 states and 1857 transitions. [2023-11-29 05:37:01,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:37:01,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 128 [2023-11-29 05:37:01,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:01,575 INFO L225 Difference]: With dead ends: 1517 [2023-11-29 05:37:01,575 INFO L226 Difference]: Without dead ends: 927 [2023-11-29 05:37:01,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:37:01,577 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 109 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:01,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 224 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 05:37:01,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2023-11-29 05:37:01,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 927. [2023-11-29 05:37:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 927 states, 602 states have (on average 1.1146179401993355) internal successors, (671), 619 states have internal predecessors, (671), 222 states have call successors, (222), 90 states have call predecessors, (222), 102 states have return successors, (253), 217 states have call predecessors, (253), 215 states have call successors, (253) [2023-11-29 05:37:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1146 transitions. [2023-11-29 05:37:01,691 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1146 transitions. Word has length 128 [2023-11-29 05:37:01,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:01,692 INFO L495 AbstractCegarLoop]: Abstraction has 927 states and 1146 transitions. [2023-11-29 05:37:01,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 05:37:01,692 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1146 transitions. [2023-11-29 05:37:01,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-29 05:37:01,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:01,694 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 05:37:01,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-29 05:37:01,694 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:01,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:01,695 INFO L85 PathProgramCache]: Analyzing trace with hash -995162255, now seen corresponding path program 1 times [2023-11-29 05:37:01,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:01,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180658122] [2023-11-29 05:37:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:01,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:37:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:37:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:37:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:37:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:37:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:37:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:37:03,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:37:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:37:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:37:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:03,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:37:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:04,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:37:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 05:37:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 05:37:04,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:04,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180658122] [2023-11-29 05:37:04,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180658122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:37:04,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163035696] [2023-11-29 05:37:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:04,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:04,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:37:04,340 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:37:04,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:37:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:04,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-29 05:37:04,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:37:06,187 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 74 proven. 8 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-29 05:37:06,187 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:37:06,915 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 28 proven. 13 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-29 05:37:06,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163035696] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:37:06,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:37:06,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 11] total 35 [2023-11-29 05:37:06,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864815602] [2023-11-29 05:37:06,916 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:37:06,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 05:37:06,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:06,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 05:37:06,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 05:37:06,919 INFO L87 Difference]: Start difference. First operand 927 states and 1146 transitions. Second operand has 35 states, 34 states have (on average 4.588235294117647) internal successors, (156), 32 states have internal predecessors, (156), 7 states have call successors, (44), 6 states have call predecessors, (44), 7 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2023-11-29 05:37:11,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:37:17,914 WARN L539 Checker$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 05:37:22,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:37:26,025 WARN L539 Checker$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 05:37:33,953 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 05:37:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:35,563 INFO L93 Difference]: Finished difference Result 1493 states and 1817 transitions. [2023-11-29 05:37:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 05:37:35,564 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 4.588235294117647) internal successors, (156), 32 states have internal predecessors, (156), 7 states have call successors, (44), 6 states have call predecessors, (44), 7 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) Word has length 128 [2023-11-29 05:37:35,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:35,571 INFO L225 Difference]: With dead ends: 1493 [2023-11-29 05:37:35,571 INFO L226 Difference]: Without dead ends: 1127 [2023-11-29 05:37:35,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 264 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=546, Invalid=2760, Unknown=0, NotChecked=0, Total=3306 [2023-11-29 05:37:35,574 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 384 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 3522 mSolverCounterSat, 298 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 552 SdHoareTripleChecker+Invalid, 3825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 3522 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:35,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 552 Invalid, 3825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 3522 Invalid, 5 Unknown, 0 Unchecked, 27.3s Time] [2023-11-29 05:37:35,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2023-11-29 05:37:35,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1066. [2023-11-29 05:37:35,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 704 states have (on average 1.1150568181818181) internal successors, (785), 723 states have internal predecessors, (785), 244 states have call successors, (244), 102 states have call predecessors, (244), 117 states have return successors, (274), 240 states have call predecessors, (274), 236 states have call successors, (274) [2023-11-29 05:37:35,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1303 transitions. [2023-11-29 05:37:35,793 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1303 transitions. Word has length 128 [2023-11-29 05:37:35,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:35,793 INFO L495 AbstractCegarLoop]: Abstraction has 1066 states and 1303 transitions. [2023-11-29 05:37:35,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 4.588235294117647) internal successors, (156), 32 states have internal predecessors, (156), 7 states have call successors, (44), 6 states have call predecessors, (44), 7 states have return successors, (40), 6 states have call predecessors, (40), 6 states have call successors, (40) [2023-11-29 05:37:35,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1303 transitions. [2023-11-29 05:37:35,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 05:37:35,796 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:35,796 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:35,806 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 05:37:35,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 05:37:35,996 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:35,997 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:35,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1128200756, now seen corresponding path program 1 times [2023-11-29 05:37:35,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:35,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761579954] [2023-11-29 05:37:35,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:35,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:37:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:37:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:36,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:37:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:37:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:37:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:37:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:37:36,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:37:36,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:37:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:37:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:37:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:37:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 05:37:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:36,630 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-29 05:37:36,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:36,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761579954] [2023-11-29 05:37:36,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761579954] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:36,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:36,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:37:36,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346486545] [2023-11-29 05:37:36,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:36,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:37:36,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:36,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:37:36,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:37:36,632 INFO L87 Difference]: Start difference. First operand 1066 states and 1303 transitions. Second operand has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 05:37:39,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:39,132 INFO L93 Difference]: Finished difference Result 1096 states and 1336 transitions. [2023-11-29 05:37:39,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:37:39,133 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 130 [2023-11-29 05:37:39,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:39,137 INFO L225 Difference]: With dead ends: 1096 [2023-11-29 05:37:39,137 INFO L226 Difference]: Without dead ends: 1094 [2023-11-29 05:37:39,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:37:39,138 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 134 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:39,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 467 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 05:37:39,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2023-11-29 05:37:39,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1090. [2023-11-29 05:37:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 719 states have (on average 1.1126564673157162) internal successors, (800), 738 states have internal predecessors, (800), 248 states have call successors, (248), 107 states have call predecessors, (248), 122 states have return successors, (278), 244 states have call predecessors, (278), 240 states have call successors, (278) [2023-11-29 05:37:39,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1326 transitions. [2023-11-29 05:37:39,311 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1326 transitions. Word has length 130 [2023-11-29 05:37:39,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:39,311 INFO L495 AbstractCegarLoop]: Abstraction has 1090 states and 1326 transitions. [2023-11-29 05:37:39,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-29 05:37:39,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1326 transitions. [2023-11-29 05:37:39,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-29 05:37:39,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:39,313 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:39,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-29 05:37:39,313 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:39,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:39,314 INFO L85 PathProgramCache]: Analyzing trace with hash 2019005386, now seen corresponding path program 1 times [2023-11-29 05:37:39,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:39,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976240139] [2023-11-29 05:37:39,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:39,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:41,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:37:41,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:37:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:37:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:37:41,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:37:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:37:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:37:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:37:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:37:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:37:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:37:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:37:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 05:37:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:41,512 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-29 05:37:41,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:41,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976240139] [2023-11-29 05:37:41,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976240139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:41,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:41,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-29 05:37:41,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802728126] [2023-11-29 05:37:41,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:41,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:37:41,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:41,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:37:41,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:37:41,514 INFO L87 Difference]: Start difference. First operand 1090 states and 1326 transitions. Second operand has 19 states, 16 states have (on average 3.6875) internal successors, (59), 14 states have internal predecessors, (59), 6 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 05:37:45,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:45,056 INFO L93 Difference]: Finished difference Result 1108 states and 1343 transitions. [2023-11-29 05:37:45,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 05:37:45,057 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 3.6875) internal successors, (59), 14 states have internal predecessors, (59), 6 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) Word has length 130 [2023-11-29 05:37:45,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:45,063 INFO L225 Difference]: With dead ends: 1108 [2023-11-29 05:37:45,063 INFO L226 Difference]: Without dead ends: 1106 [2023-11-29 05:37:45,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=757, Unknown=0, NotChecked=0, Total=870 [2023-11-29 05:37:45,065 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 183 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:45,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 458 Invalid, 2350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-29 05:37:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2023-11-29 05:37:45,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1086. [2023-11-29 05:37:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 719 states have (on average 1.1126564673157162) internal successors, (800), 738 states have internal predecessors, (800), 244 states have call successors, (244), 107 states have call predecessors, (244), 122 states have return successors, (274), 240 states have call predecessors, (274), 236 states have call successors, (274) [2023-11-29 05:37:45,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1318 transitions. [2023-11-29 05:37:45,309 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1318 transitions. Word has length 130 [2023-11-29 05:37:45,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:45,310 INFO L495 AbstractCegarLoop]: Abstraction has 1086 states and 1318 transitions. [2023-11-29 05:37:45,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 3.6875) internal successors, (59), 14 states have internal predecessors, (59), 6 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-29 05:37:45,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1318 transitions. [2023-11-29 05:37:45,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-29 05:37:45,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:45,313 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:45,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-29 05:37:45,313 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:45,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:45,313 INFO L85 PathProgramCache]: Analyzing trace with hash -225964080, now seen corresponding path program 1 times [2023-11-29 05:37:45,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:45,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63935451] [2023-11-29 05:37:45,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:45,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:37:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:37:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:47,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:37:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:37:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:37:47,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:37:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:37:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:37:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:37:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:37:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:37:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:37:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:37:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-29 05:37:47,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:47,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63935451] [2023-11-29 05:37:47,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63935451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:37:47,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:37:47,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-29 05:37:47,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389329566] [2023-11-29 05:37:47,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:37:47,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 05:37:47,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:47,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 05:37:47,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:37:47,965 INFO L87 Difference]: Start difference. First operand 1086 states and 1318 transitions. Second operand has 20 states, 18 states have (on average 3.5) internal successors, (63), 16 states have internal predecessors, (63), 7 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-29 05:37:52,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:37:52,379 INFO L93 Difference]: Finished difference Result 1146 states and 1381 transitions. [2023-11-29 05:37:52,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 05:37:52,380 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.5) internal successors, (63), 16 states have internal predecessors, (63), 7 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 135 [2023-11-29 05:37:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:37:52,386 INFO L225 Difference]: With dead ends: 1146 [2023-11-29 05:37:52,386 INFO L226 Difference]: Without dead ends: 1132 [2023-11-29 05:37:52,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2023-11-29 05:37:52,388 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 203 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:37:52,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 487 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2392 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 05:37:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2023-11-29 05:37:52,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1106. [2023-11-29 05:37:52,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 737 states have (on average 1.112618724559023) internal successors, (820), 754 states have internal predecessors, (820), 244 states have call successors, (244), 111 states have call predecessors, (244), 124 states have return successors, (270), 240 states have call predecessors, (270), 236 states have call successors, (270) [2023-11-29 05:37:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1334 transitions. [2023-11-29 05:37:52,600 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1334 transitions. Word has length 135 [2023-11-29 05:37:52,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:37:52,600 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1334 transitions. [2023-11-29 05:37:52,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.5) internal successors, (63), 16 states have internal predecessors, (63), 7 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2023-11-29 05:37:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1334 transitions. [2023-11-29 05:37:52,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-29 05:37:52,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:37:52,603 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:37:52,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-29 05:37:52,603 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:37:52,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:37:52,603 INFO L85 PathProgramCache]: Analyzing trace with hash 368624707, now seen corresponding path program 1 times [2023-11-29 05:37:52,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:37:52,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485929847] [2023-11-29 05:37:52,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:52,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:37:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:37:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:37:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:37:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:37:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:37:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:37:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:37:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:37:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:37:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:37:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:37:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:37:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:37:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:37:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 05:37:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:54,771 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-29 05:37:54,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:37:54,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485929847] [2023-11-29 05:37:54,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485929847] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:37:54,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318446915] [2023-11-29 05:37:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:37:54,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:37:54,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:37:54,773 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:37:54,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:37:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:37:55,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 2741 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 05:37:55,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:37:55,307 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 05:37:56,411 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 16 treesize of output 8 [2023-11-29 05:37:56,432 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 53 proven. 23 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-29 05:37:56,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:37:56,750 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 32 treesize of output 26 [2023-11-29 05:37:56,840 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-29 05:37:56,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318446915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:37:56,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:37:56,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21, 14] total 33 [2023-11-29 05:37:56,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865377939] [2023-11-29 05:37:56,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:37:56,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-29 05:37:56,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:37:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-29 05:37:56,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=957, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 05:37:56,844 INFO L87 Difference]: Start difference. First operand 1106 states and 1334 transitions. Second operand has 33 states, 28 states have (on average 4.464285714285714) internal successors, (125), 24 states have internal predecessors, (125), 12 states have call successors, (44), 7 states have call predecessors, (44), 6 states have return successors, (39), 13 states have call predecessors, (39), 11 states have call successors, (39) [2023-11-29 05:38:03,202 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 05:38:08,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:38:12,794 WARN L539 Checker$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 05:38:16,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:38:16,455 INFO L93 Difference]: Finished difference Result 1118 states and 1345 transitions. [2023-11-29 05:38:16,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 05:38:16,456 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 4.464285714285714) internal successors, (125), 24 states have internal predecessors, (125), 12 states have call successors, (44), 7 states have call predecessors, (44), 6 states have return successors, (39), 13 states have call predecessors, (39), 11 states have call successors, (39) Word has length 141 [2023-11-29 05:38:16,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:38:16,461 INFO L225 Difference]: With dead ends: 1118 [2023-11-29 05:38:16,461 INFO L226 Difference]: Without dead ends: 1116 [2023-11-29 05:38:16,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 275 SyntacticMatches, 22 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=244, Invalid=2306, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 05:38:16,463 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 236 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 3566 mSolverCounterSat, 213 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 3782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 3566 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:38:16,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 618 Invalid, 3782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 3566 Invalid, 3 Unknown, 0 Unchecked, 18.9s Time] [2023-11-29 05:38:16,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2023-11-29 05:38:16,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1114. [2023-11-29 05:38:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 743 states have (on average 1.1117092866756393) internal successors, (826), 760 states have internal predecessors, (826), 244 states have call successors, (244), 113 states have call predecessors, (244), 126 states have return successors, (270), 240 states have call predecessors, (270), 236 states have call successors, (270) [2023-11-29 05:38:16,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1340 transitions. [2023-11-29 05:38:16,646 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1340 transitions. Word has length 141 [2023-11-29 05:38:16,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:38:16,646 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 1340 transitions. [2023-11-29 05:38:16,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 4.464285714285714) internal successors, (125), 24 states have internal predecessors, (125), 12 states have call successors, (44), 7 states have call predecessors, (44), 6 states have return successors, (39), 13 states have call predecessors, (39), 11 states have call successors, (39) [2023-11-29 05:38:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1340 transitions. [2023-11-29 05:38:16,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-29 05:38:16,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:38:16,648 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:38:16,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 05:38:16,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 05:38:16,849 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:38:16,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:38:16,849 INFO L85 PathProgramCache]: Analyzing trace with hash 872225069, now seen corresponding path program 1 times [2023-11-29 05:38:16,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:38:16,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342932858] [2023-11-29 05:38:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:38:16,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:38:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:38:17,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:38:17,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:38:17,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:38:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:38:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:38:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:38:17,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:38:17,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:38:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:38:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-29 05:38:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-29 05:38:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-29 05:38:17,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-29 05:38:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-29 05:38:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-29 05:38:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-29 05:38:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-29 05:38:17,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:38:17,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342932858] [2023-11-29 05:38:17,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342932858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:38:17,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:38:17,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:38:17,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400339483] [2023-11-29 05:38:17,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:38:17,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:38:17,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:38:17,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:38:17,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:38:17,402 INFO L87 Difference]: Start difference. First operand 1114 states and 1340 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 05:38:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:38:19,222 INFO L93 Difference]: Finished difference Result 1160 states and 1391 transitions. [2023-11-29 05:38:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:38:19,223 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-11-29 05:38:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:38:19,229 INFO L225 Difference]: With dead ends: 1160 [2023-11-29 05:38:19,229 INFO L226 Difference]: Without dead ends: 1158 [2023-11-29 05:38:19,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:38:19,230 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 117 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:38:19,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 371 Invalid, 1072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 05:38:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1158 states. [2023-11-29 05:38:19,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1158 to 1154. [2023-11-29 05:38:19,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 769 states have (on average 1.1079323797139142) internal successors, (852), 790 states have internal predecessors, (852), 248 states have call successors, (248), 119 states have call predecessors, (248), 136 states have return successors, (280), 244 states have call predecessors, (280), 240 states have call successors, (280) [2023-11-29 05:38:19,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1380 transitions. [2023-11-29 05:38:19,426 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1380 transitions. Word has length 143 [2023-11-29 05:38:19,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:38:19,426 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1380 transitions. [2023-11-29 05:38:19,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-29 05:38:19,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1380 transitions. [2023-11-29 05:38:19,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 05:38:19,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:38:19,428 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:19,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-29 05:38:19,428 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:38:19,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:38:19,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1566967915, now seen corresponding path program 1 times [2023-11-29 05:38:19,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:38:19,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369535517] [2023-11-29 05:38:19,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:38:19,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:38:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:38:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:38:20,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:38:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:38:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:38:20,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:38:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:38:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:38:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:38:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:38:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:38:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:38:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:38:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:38:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:38:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:38:20,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 05:38:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:20,155 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-29 05:38:20,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:38:20,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369535517] [2023-11-29 05:38:20,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369535517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:38:20,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:38:20,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 05:38:20,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308082542] [2023-11-29 05:38:20,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:38:20,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:38:20,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:38:20,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:38:20,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:38:20,157 INFO L87 Difference]: Start difference. First operand 1154 states and 1380 transitions. Second operand has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 05:38:22,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:38:22,428 INFO L93 Difference]: Finished difference Result 1166 states and 1392 transitions. [2023-11-29 05:38:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 05:38:22,428 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 151 [2023-11-29 05:38:22,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:38:22,434 INFO L225 Difference]: With dead ends: 1166 [2023-11-29 05:38:22,434 INFO L226 Difference]: Without dead ends: 1164 [2023-11-29 05:38:22,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:38:22,435 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 131 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:38:22,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 468 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 05:38:22,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2023-11-29 05:38:22,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1163. [2023-11-29 05:38:22,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 775 states have (on average 1.1070967741935485) internal successors, (858), 796 states have internal predecessors, (858), 249 states have call successors, (249), 121 states have call predecessors, (249), 138 states have return successors, (281), 245 states have call predecessors, (281), 241 states have call successors, (281) [2023-11-29 05:38:22,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1388 transitions. [2023-11-29 05:38:22,652 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1388 transitions. Word has length 151 [2023-11-29 05:38:22,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:38:22,653 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1388 transitions. [2023-11-29 05:38:22,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-29 05:38:22,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1388 transitions. [2023-11-29 05:38:22,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-29 05:38:22,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:38:22,654 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:22,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-29 05:38:22,655 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:38:22,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:38:22,655 INFO L85 PathProgramCache]: Analyzing trace with hash -224634135, now seen corresponding path program 1 times [2023-11-29 05:38:22,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:38:22,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268136434] [2023-11-29 05:38:22,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:38:22,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:38:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:38:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:38:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:38:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:38:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:38:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:38:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:38:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:38:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:38:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:38:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:38:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:38:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:38:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:38:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:38:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:38:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 05:38:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:25,904 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 31 proven. 35 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-29 05:38:25,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:38:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268136434] [2023-11-29 05:38:25,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268136434] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:38:25,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216583095] [2023-11-29 05:38:25,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:38:25,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:38:25,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:38:25,906 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:38:25,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 05:38:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:38:26,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 2778 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-29 05:38:26,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:38:26,511 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 05:38:29,167 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 68 proven. 31 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-29 05:38:29,167 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:38:30,296 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 32 treesize of output 26 [2023-11-29 05:38:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-29 05:38:30,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216583095] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:38:30,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:38:30,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 20] total 59 [2023-11-29 05:38:30,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777696996] [2023-11-29 05:38:30,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:38:30,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-11-29 05:38:30,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:38:30,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-11-29 05:38:30,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=3248, Unknown=0, NotChecked=0, Total=3422 [2023-11-29 05:38:30,418 INFO L87 Difference]: Start difference. First operand 1163 states and 1388 transitions. Second operand has 59 states, 49 states have (on average 3.795918367346939) internal successors, (186), 46 states have internal predecessors, (186), 16 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (46), 18 states have call predecessors, (46), 14 states have call successors, (46) [2023-11-29 05:38:34,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:38:43,785 WARN L539 Checker$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 05:38:49,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:38:53,481 WARN L539 Checker$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 05:39:00,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:00,799 INFO L93 Difference]: Finished difference Result 1177 states and 1401 transitions. [2023-11-29 05:39:00,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 05:39:00,800 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 49 states have (on average 3.795918367346939) internal successors, (186), 46 states have internal predecessors, (186), 16 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (46), 18 states have call predecessors, (46), 14 states have call successors, (46) Word has length 151 [2023-11-29 05:39:00,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:00,804 INFO L225 Difference]: With dead ends: 1177 [2023-11-29 05:39:00,804 INFO L226 Difference]: Without dead ends: 1175 [2023-11-29 05:39:00,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 280 SyntacticMatches, 21 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1667 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=610, Invalid=7046, Unknown=0, NotChecked=0, Total=7656 [2023-11-29 05:39:00,807 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 321 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 8266 mSolverCounterSat, 221 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 8491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 8266 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:00,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1305 Invalid, 8491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 8266 Invalid, 4 Unknown, 0 Unchecked, 27.9s Time] [2023-11-29 05:39:00,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2023-11-29 05:39:00,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1162. [2023-11-29 05:39:01,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 775 states have (on average 1.1070967741935485) internal successors, (858), 796 states have internal predecessors, (858), 248 states have call successors, (248), 121 states have call predecessors, (248), 138 states have return successors, (280), 244 states have call predecessors, (280), 240 states have call successors, (280) [2023-11-29 05:39:01,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1386 transitions. [2023-11-29 05:39:01,003 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1386 transitions. Word has length 151 [2023-11-29 05:39:01,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:01,003 INFO L495 AbstractCegarLoop]: Abstraction has 1162 states and 1386 transitions. [2023-11-29 05:39:01,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 49 states have (on average 3.795918367346939) internal successors, (186), 46 states have internal predecessors, (186), 16 states have call successors, (51), 8 states have call predecessors, (51), 10 states have return successors, (46), 18 states have call predecessors, (46), 14 states have call successors, (46) [2023-11-29 05:39:01,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1386 transitions. [2023-11-29 05:39:01,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-29 05:39:01,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:01,005 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:39:01,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 05:39:01,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 05:39:01,206 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:01,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:01,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1860360169, now seen corresponding path program 1 times [2023-11-29 05:39:01,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:01,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938373155] [2023-11-29 05:39:01,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:01,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:39:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:39:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:39:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:39:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:39:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:39:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:39:03,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:39:03,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:39:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:39:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:39:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:39:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 05:39:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:39:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 05:39:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:39:03,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:39:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:39:03,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:39:03,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-29 05:39:03,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938373155] [2023-11-29 05:39:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938373155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:39:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515918549] [2023-11-29 05:39:03,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:03,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:39:03,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:39:03,938 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:39:03,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 05:39:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:05,015 INFO L262 TraceCheckSpWp]: Trace formula consists of 2741 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 05:39:05,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:39:05,079 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 8 treesize of output 1 [2023-11-29 05:39:06,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:39:06,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 26 [2023-11-29 05:39:08,467 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 05:39:08,482 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:39:08,482 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 28 treesize of output 28 [2023-11-29 05:39:08,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:39:08,492 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 33 treesize of output 25 [2023-11-29 05:39:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 68 proven. 76 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-29 05:39:08,616 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:39:08,883 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 52 treesize of output 40 [2023-11-29 05:39:12,988 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_79| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset_BEFORE_CALL_92| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_6| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_6| Int)) (let ((.cse0 (select (select |c_#memory_int#6| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_6|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_6|))) (or (not (let ((.cse1 (select (select |c_old(#memory_int#0)| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_79|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset_BEFORE_CALL_92|))) (= (+ .cse0 (* 18446744073709551616 (div .cse1 18446744073709551616))) (+ .cse1 (* 18446744073709551616 (div .cse0 18446744073709551616)))))) (let ((.cse2 (select (select |c_#memory_int#0| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_79|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset_BEFORE_CALL_92|)) (.cse3 (select (select |c_#memory_int#5| |c_aws_byte_buf_append_#in~from.base|) |c_aws_byte_buf_append_#in~from.offset|))) (= (+ .cse2 (* 18446744073709551616 (div (+ .cse0 .cse3) 18446744073709551616))) (+ (* 18446744073709551616 (div .cse2 18446744073709551616)) .cse0 .cse3)))))) is different from false [2023-11-29 05:39:13,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515918549] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:39:13,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:39:13,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 28] total 42 [2023-11-29 05:39:13,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819513235] [2023-11-29 05:39:13,036 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:39:13,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-29 05:39:13,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:13,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-29 05:39:13,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1917, Unknown=1, NotChecked=88, Total=2162 [2023-11-29 05:39:13,039 INFO L87 Difference]: Start difference. First operand 1162 states and 1386 transitions. Second operand has 42 states, 37 states have (on average 4.297297297297297) internal successors, (159), 34 states have internal predecessors, (159), 14 states have call successors, (39), 9 states have call predecessors, (39), 10 states have return successors, (37), 13 states have call predecessors, (37), 12 states have call successors, (37) [2023-11-29 05:39:46,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:39:46,432 INFO L93 Difference]: Finished difference Result 2796 states and 3326 transitions. [2023-11-29 05:39:46,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2023-11-29 05:39:46,433 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 37 states have (on average 4.297297297297297) internal successors, (159), 34 states have internal predecessors, (159), 14 states have call successors, (39), 9 states have call predecessors, (39), 10 states have return successors, (37), 13 states have call predecessors, (37), 12 states have call successors, (37) Word has length 153 [2023-11-29 05:39:46,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:39:46,447 INFO L225 Difference]: With dead ends: 2796 [2023-11-29 05:39:46,447 INFO L226 Difference]: Without dead ends: 2590 [2023-11-29 05:39:46,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 190 SyntacticMatches, 17 SemanticMatches, 168 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9879 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=2697, Invalid=25698, Unknown=1, NotChecked=334, Total=28730 [2023-11-29 05:39:46,455 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 1200 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 7896 mSolverCounterSat, 1102 mSolverCounterUnsat, 117 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1258 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 9115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1102 IncrementalHoareTripleChecker+Valid, 7896 IncrementalHoareTripleChecker+Invalid, 117 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:39:46,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1258 Valid, 1114 Invalid, 9115 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1102 Valid, 7896 Invalid, 117 Unknown, 0 Unchecked, 20.2s Time] [2023-11-29 05:39:46,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2023-11-29 05:39:46,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 2091. [2023-11-29 05:39:46,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2091 states, 1407 states have (on average 1.1165600568585643) internal successors, (1571), 1440 states have internal predecessors, (1571), 432 states have call successors, (432), 212 states have call predecessors, (432), 251 states have return successors, (486), 438 states have call predecessors, (486), 416 states have call successors, (486) [2023-11-29 05:39:46,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 2489 transitions. [2023-11-29 05:39:46,902 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 2489 transitions. Word has length 153 [2023-11-29 05:39:46,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:39:46,902 INFO L495 AbstractCegarLoop]: Abstraction has 2091 states and 2489 transitions. [2023-11-29 05:39:46,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 37 states have (on average 4.297297297297297) internal successors, (159), 34 states have internal predecessors, (159), 14 states have call successors, (39), 9 states have call predecessors, (39), 10 states have return successors, (37), 13 states have call predecessors, (37), 12 states have call successors, (37) [2023-11-29 05:39:46,902 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 2489 transitions. [2023-11-29 05:39:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-29 05:39:46,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:39:46,904 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:39:46,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 05:39:47,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:39:47,105 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:39:47,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:39:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash 767724967, now seen corresponding path program 1 times [2023-11-29 05:39:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:39:47,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361994412] [2023-11-29 05:39:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:47,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:39:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:48,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:39:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:48,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:39:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:48,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:39:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:48,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:39:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:39:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:48,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:39:48,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:48,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:39:48,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:48,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:39:48,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:48,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:39:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:48,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:39:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:48,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:39:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:39:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:49,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 05:39:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:49,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:39:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 05:39:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:49,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:39:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:49,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:39:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:39:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:39:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-29 05:39:49,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:39:49,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361994412] [2023-11-29 05:39:49,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361994412] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:39:49,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055221826] [2023-11-29 05:39:49,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:39:49,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:39:49,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:39:49,197 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:39:49,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 05:39:49,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:39:49,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 05:39:49,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:39:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 51 proven. 56 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-29 05:39:50,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:39:51,402 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 05:39:51,469 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-29 05:39:51,470 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 31 treesize of output 26 [2023-11-29 05:39:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-29 05:39:51,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055221826] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:39:51,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 05:39:51,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 23 [2023-11-29 05:39:51,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729327311] [2023-11-29 05:39:51,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 05:39:51,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 05:39:51,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:39:51,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 05:39:51,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=436, Unknown=1, NotChecked=0, Total=506 [2023-11-29 05:39:51,502 INFO L87 Difference]: Start difference. First operand 2091 states and 2489 transitions. Second operand has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 19 states have internal predecessors, (129), 9 states have call successors, (44), 8 states have call predecessors, (44), 7 states have return successors, (42), 9 states have call predecessors, (42), 8 states have call successors, (42) [2023-11-29 05:39:56,778 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 05:40:01,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:40:05,604 WARN L539 Checker$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 05:40:09,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:40:14,476 WARN L539 Checker$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 05:40:18,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:40:24,493 WARN L539 Checker$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 05:40:31,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:40:35,111 WARN L539 Checker$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 05:40:39,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:40:43,223 WARN L539 Checker$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 05:40:48,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:40:52,295 WARN L539 Checker$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 05:40:53,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:40:53,838 INFO L93 Difference]: Finished difference Result 3111 states and 3627 transitions. [2023-11-29 05:40:53,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-29 05:40:53,839 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 19 states have internal predecessors, (129), 9 states have call successors, (44), 8 states have call predecessors, (44), 7 states have return successors, (42), 9 states have call predecessors, (42), 8 states have call successors, (42) Word has length 153 [2023-11-29 05:40:53,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:40:53,848 INFO L225 Difference]: With dead ends: 3111 [2023-11-29 05:40:53,848 INFO L226 Difference]: Without dead ends: 2401 [2023-11-29 05:40:53,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 324 SyntacticMatches, 21 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=639, Invalid=3137, Unknown=6, NotChecked=0, Total=3782 [2023-11-29 05:40:53,850 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 812 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 3487 mSolverCounterSat, 766 mSolverCounterUnsat, 53 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 4306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 766 IncrementalHoareTripleChecker+Valid, 3487 IncrementalHoareTripleChecker+Invalid, 53 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:40:53,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 379 Invalid, 4306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [766 Valid, 3487 Invalid, 53 Unknown, 0 Unchecked, 59.4s Time] [2023-11-29 05:40:53,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2023-11-29 05:40:54,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2079. [2023-11-29 05:40:54,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2079 states, 1427 states have (on average 1.1184302733006306) internal successors, (1596), 1463 states have internal predecessors, (1596), 397 states have call successors, (397), 216 states have call predecessors, (397), 254 states have return successors, (440), 399 states have call predecessors, (440), 379 states have call successors, (440) [2023-11-29 05:40:54,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2079 states to 2079 states and 2433 transitions. [2023-11-29 05:40:54,377 INFO L78 Accepts]: Start accepts. Automaton has 2079 states and 2433 transitions. Word has length 153 [2023-11-29 05:40:54,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:40:54,377 INFO L495 AbstractCegarLoop]: Abstraction has 2079 states and 2433 transitions. [2023-11-29 05:40:54,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.608695652173913) internal successors, (129), 19 states have internal predecessors, (129), 9 states have call successors, (44), 8 states have call predecessors, (44), 7 states have return successors, (42), 9 states have call predecessors, (42), 8 states have call successors, (42) [2023-11-29 05:40:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2079 states and 2433 transitions. [2023-11-29 05:40:54,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-29 05:40:54,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:40:54,379 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:40:54,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 05:40:54,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:54,579 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:40:54,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:40:54,580 INFO L85 PathProgramCache]: Analyzing trace with hash -272012245, now seen corresponding path program 1 times [2023-11-29 05:40:54,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:40:54,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284529258] [2023-11-29 05:40:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:54,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:40:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:56,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:40:56,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:56,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:40:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:56,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:40:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:56,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:40:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:56,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:40:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:56,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:40:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:56,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:40:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:56,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:40:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:56,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:40:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:56,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:40:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:56,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:40:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:57,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:40:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:57,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 05:40:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:57,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:40:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:57,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 05:40:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:57,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:40:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:40:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:57,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:40:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:40:57,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:40:57,393 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-29 05:40:57,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:40:57,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284529258] [2023-11-29 05:40:57,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284529258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:40:57,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846022700] [2023-11-29 05:40:57,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:40:57,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:40:57,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:40:57,395 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:40:57,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 05:41:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:01,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-29 05:41:01,578 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:05,701 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_7| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_93| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_7| Int)) (= (select (select |c_#memory_int#0| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_93|) 0) (select (select |c_#memory_int#6| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_7|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_7|))) is different from true [2023-11-29 05:41:09,777 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_8| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_94| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_8| Int)) (= (select (select |c_#memory_int#6| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_8|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_8|) (select (select |c_#memory_int#0| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_94|) 0))) is different from true [2023-11-29 05:41:13,862 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_95| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_9| Int)) (= (select (select |c_#memory_int#6| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_9|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_9|) (select (select |c_#memory_int#0| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_95|) 0))) is different from true [2023-11-29 05:41:18,061 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_95| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_9| Int)) (= (select (select |c_#memory_int#6| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_9|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_9|) (select (select |c_#memory_int#0| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_95|) 0))) (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_10| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_10| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_96| Int)) (= (select (select |c_#memory_int#6| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_10|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_10|) (select (select |c_#memory_int#0| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_96|) 0)))) is different from true [2023-11-29 05:41:18,308 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 11 treesize of output 7 [2023-11-29 05:41:19,379 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 05:41:19,384 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 19 treesize of output 11 [2023-11-29 05:41:19,387 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 15 treesize of output 7 [2023-11-29 05:41:19,475 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 55 proven. 34 refuted. 13 times theorem prover too weak. 51 trivial. 7 not checked. [2023-11-29 05:41:19,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:41:19,663 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 97 treesize of output 77 [2023-11-29 05:41:23,862 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_int#5| |c_aws_byte_buf_append_#in~from.base|) |c_aws_byte_buf_append_#in~from.offset|))) (and (forall ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_98| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset_BEFORE_CALL_120| Int)) (let ((.cse2 (select (select |c_#memory_int#6| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_12|))) (let ((.cse1 (select (select |c_old(#memory_int#0)| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_98|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset_BEFORE_CALL_120|)) (.cse0 (* (div .cse2 18446744073709551616) 18446744073709551616))) (or (< (+ .cse0 .cse1) (+ .cse2 (* 18446744073709551616 (div .cse1 18446744073709551616)))) (let ((.cse3 (select (select |c_#memory_int#0| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_98|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset_BEFORE_CALL_120|))) (< (+ .cse2 (* 18446744073709551616 (div .cse3 18446744073709551616)) .cse4) (+ .cse3 (* 18446744073709551616 (div (+ .cse2 .cse4) 18446744073709551616)) 1))) (< (+ .cse1 (* 18446744073709551616 (div (+ .cse2 (* (- 1) .cse1)) 18446744073709551616))) .cse0))))) (forall ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_98| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset_BEFORE_CALL_120| Int)) (let ((.cse7 (select (select |c_#memory_int#6| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_12|))) (let ((.cse6 (select (select |c_old(#memory_int#0)| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_98|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset_BEFORE_CALL_120|)) (.cse5 (* (div .cse7 18446744073709551616) 18446744073709551616))) (or (< (+ .cse5 .cse6) (+ .cse7 (* 18446744073709551616 (div .cse6 18446744073709551616)))) (< (* 18446744073709551616 (div (+ .cse7 .cse4) 18446744073709551616)) (let ((.cse8 (select (select |c_#memory_int#0| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_98|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset_BEFORE_CALL_120|))) (+ .cse8 (* (div (+ .cse7 (* (- 1) .cse8) .cse4) 18446744073709551616) 18446744073709551616) 1))) (< (+ .cse6 (* 18446744073709551616 (div (+ .cse7 (* (- 1) .cse6)) 18446744073709551616))) .cse5))))))) is different from false [2023-11-29 05:41:24,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846022700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:41:24,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:41:24,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 24] total 34 [2023-11-29 05:41:24,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276548971] [2023-11-29 05:41:24,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:41:24,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-29 05:41:24,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:24,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-29 05:41:24,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=971, Unknown=5, NotChecked=330, Total=1406 [2023-11-29 05:41:24,027 INFO L87 Difference]: Start difference. First operand 2079 states and 2433 transitions. Second operand has 34 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 states have internal predecessors, (125), 12 states have call successors, (39), 10 states have call predecessors, (39), 9 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2023-11-29 05:41:28,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:41:38,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:38,116 INFO L93 Difference]: Finished difference Result 2694 states and 3136 transitions. [2023-11-29 05:41:38,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-29 05:41:38,117 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 states have internal predecessors, (125), 12 states have call successors, (39), 10 states have call predecessors, (39), 9 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) Word has length 153 [2023-11-29 05:41:38,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:38,126 INFO L225 Difference]: With dead ends: 2694 [2023-11-29 05:41:38,126 INFO L226 Difference]: Without dead ends: 2684 [2023-11-29 05:41:38,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 176 SyntacticMatches, 14 SemanticMatches, 71 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 965 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=524, Invalid=4047, Unknown=5, NotChecked=680, Total=5256 [2023-11-29 05:41:38,128 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 538 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 4342 mSolverCounterSat, 450 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 6565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 4342 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 1770 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:38,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 475 Invalid, 6565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 4342 Invalid, 3 Unknown, 1770 Unchecked, 10.9s Time] [2023-11-29 05:41:38,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2684 states. [2023-11-29 05:41:38,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2684 to 2474. [2023-11-29 05:41:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2474 states, 1717 states have (on average 1.1199767035527082) internal successors, (1923), 1753 states have internal predecessors, (1923), 456 states have call successors, (456), 259 states have call predecessors, (456), 300 states have return successors, (501), 461 states have call predecessors, (501), 435 states have call successors, (501) [2023-11-29 05:41:38,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 2880 transitions. [2023-11-29 05:41:38,778 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 2880 transitions. Word has length 153 [2023-11-29 05:41:38,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:38,778 INFO L495 AbstractCegarLoop]: Abstraction has 2474 states and 2880 transitions. [2023-11-29 05:41:38,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 29 states have (on average 4.310344827586207) internal successors, (125), 29 states have internal predecessors, (125), 12 states have call successors, (39), 10 states have call predecessors, (39), 9 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2023-11-29 05:41:38,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 2880 transitions. [2023-11-29 05:41:38,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-29 05:41:38,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:38,780 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-29 05:41:38,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 05:41:38,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:38,981 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:38,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:38,981 INFO L85 PathProgramCache]: Analyzing trace with hash 512189190, now seen corresponding path program 1 times [2023-11-29 05:41:38,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:38,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684206839] [2023-11-29 05:41:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:38,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:41:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:41:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:41:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:41:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:41:39,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:41:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:41:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:41:39,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:41:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:41:39,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:41:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:41:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 05:41:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:41:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 05:41:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:41:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:41:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:41:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:41:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-29 05:41:39,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:39,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684206839] [2023-11-29 05:41:39,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684206839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:39,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:39,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:41:39,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219561583] [2023-11-29 05:41:39,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:39,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:41:39,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:39,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:41:39,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:41:39,306 INFO L87 Difference]: Start difference. First operand 2474 states and 2880 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 4 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 05:41:41,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:41,289 INFO L93 Difference]: Finished difference Result 3576 states and 4153 transitions. [2023-11-29 05:41:41,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:41:41,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 4 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 155 [2023-11-29 05:41:41,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:41,298 INFO L225 Difference]: With dead ends: 3576 [2023-11-29 05:41:41,298 INFO L226 Difference]: Without dead ends: 2278 [2023-11-29 05:41:41,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:41:41,301 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 158 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:41,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 179 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 05:41:41,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2023-11-29 05:41:41,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2216. [2023-11-29 05:41:41,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2216 states, 1571 states have (on average 1.1152132399745385) internal successors, (1752), 1607 states have internal predecessors, (1752), 379 states have call successors, (379), 222 states have call predecessors, (379), 265 states have return successors, (427), 386 states have call predecessors, (427), 359 states have call successors, (427) [2023-11-29 05:41:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2216 states to 2216 states and 2558 transitions. [2023-11-29 05:41:41,736 INFO L78 Accepts]: Start accepts. Automaton has 2216 states and 2558 transitions. Word has length 155 [2023-11-29 05:41:41,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:41,736 INFO L495 AbstractCegarLoop]: Abstraction has 2216 states and 2558 transitions. [2023-11-29 05:41:41,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (21), 4 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 05:41:41,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2216 states and 2558 transitions. [2023-11-29 05:41:41,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-29 05:41:41,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:41,738 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:41,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-11-29 05:41:41,738 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:41,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1294684669, now seen corresponding path program 1 times [2023-11-29 05:41:41,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:41,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51482897] [2023-11-29 05:41:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:41,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:41:42,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:41:42,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:41:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:41:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:41:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:41:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:41:42,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:41:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:41:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:41:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:41:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:41:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:41:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:41:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:41:42,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:41:42,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 05:41:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-29 05:41:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-29 05:41:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:42,357 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-29 05:41:42,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:42,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51482897] [2023-11-29 05:41:42,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51482897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:42,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:41:42,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:41:42,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840870079] [2023-11-29 05:41:42,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:42,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:41:42,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:41:42,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:41:42,358 INFO L87 Difference]: Start difference. First operand 2216 states and 2558 transitions. Second operand has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-29 05:41:44,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:41:44,719 INFO L93 Difference]: Finished difference Result 2232 states and 2573 transitions. [2023-11-29 05:41:44,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:41:44,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 164 [2023-11-29 05:41:44,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:41:44,729 INFO L225 Difference]: With dead ends: 2232 [2023-11-29 05:41:44,729 INFO L226 Difference]: Without dead ends: 2224 [2023-11-29 05:41:44,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-29 05:41:44,731 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 117 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:41:44,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 371 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 05:41:44,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2023-11-29 05:41:45,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2203. [2023-11-29 05:41:45,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 1560 states have (on average 1.1134615384615385) internal successors, (1737), 1596 states have internal predecessors, (1737), 377 states have call successors, (377), 222 states have call predecessors, (377), 265 states have return successors, (425), 384 states have call predecessors, (425), 357 states have call successors, (425) [2023-11-29 05:41:45,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2539 transitions. [2023-11-29 05:41:45,160 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2539 transitions. Word has length 164 [2023-11-29 05:41:45,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:41:45,160 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2539 transitions. [2023-11-29 05:41:45,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-29 05:41:45,161 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2539 transitions. [2023-11-29 05:41:45,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 05:41:45,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:41:45,162 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:45,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-11-29 05:41:45,163 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:41:45,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:41:45,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1649609595, now seen corresponding path program 1 times [2023-11-29 05:41:45,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:41:45,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219143398] [2023-11-29 05:41:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:45,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:41:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:41:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:41:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:41:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:41:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:41:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:41:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:41:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:41:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:41:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:41:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:41:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:41:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:41:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:41:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:41:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:41:47,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 05:41:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-29 05:41:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-29 05:41:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2023-11-29 05:41:47,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:41:47,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219143398] [2023-11-29 05:41:47,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219143398] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:41:47,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039523640] [2023-11-29 05:41:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:41:47,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:41:47,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:41:47,896 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:41:47,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 05:41:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:41:48,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 2806 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 05:41:48,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:41:48,612 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 05:41:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-29 05:41:49,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:41:49,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039523640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:41:49,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 05:41:49,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [20] total 30 [2023-11-29 05:41:49,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599383118] [2023-11-29 05:41:49,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:41:49,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 05:41:49,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:41:49,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 05:41:49,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2023-11-29 05:41:49,885 INFO L87 Difference]: Start difference. First operand 2203 states and 2539 transitions. Second operand has 15 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 05:41:55,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:42:00,797 WARN L539 Checker$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 05:42:04,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:42:08,840 WARN L539 Checker$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 05:42:12,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:42:16,972 WARN L539 Checker$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 05:42:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:18,558 INFO L93 Difference]: Finished difference Result 3654 states and 4175 transitions. [2023-11-29 05:42:18,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:42:18,558 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) Word has length 168 [2023-11-29 05:42:18,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:18,565 INFO L225 Difference]: With dead ends: 3654 [2023-11-29 05:42:18,565 INFO L226 Difference]: Without dead ends: 2459 [2023-11-29 05:42:18,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 179 SyntacticMatches, 16 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 05:42:18,567 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 111 mSDsluCounter, 1206 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 48 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:18,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1377 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 992 Invalid, 6 Unknown, 0 Unchecked, 28.0s Time] [2023-11-29 05:42:18,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2023-11-29 05:42:19,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2201. [2023-11-29 05:42:19,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 1556 states have (on average 1.095758354755784) internal successors, (1705), 1592 states have internal predecessors, (1705), 377 states have call successors, (377), 224 states have call predecessors, (377), 267 states have return successors, (425), 384 states have call predecessors, (425), 357 states have call successors, (425) [2023-11-29 05:42:19,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 2507 transitions. [2023-11-29 05:42:19,009 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 2507 transitions. Word has length 168 [2023-11-29 05:42:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:19,009 INFO L495 AbstractCegarLoop]: Abstraction has 2201 states and 2507 transitions. [2023-11-29 05:42:19,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.857142857142857) internal successors, (82), 13 states have internal predecessors, (82), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (18), 7 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-29 05:42:19,010 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 2507 transitions. [2023-11-29 05:42:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 05:42:19,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:19,011 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:19,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 05:42:19,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:19,212 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:19,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:19,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1944293123, now seen corresponding path program 1 times [2023-11-29 05:42:19,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:19,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525150946] [2023-11-29 05:42:19,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:19,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:42:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:42:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:42:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:42:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:42:19,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:42:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:42:19,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:42:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:42:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:42:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:42:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:42:19,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:42:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 05:42:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-29 05:42:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-29 05:42:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2023-11-29 05:42:19,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:19,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525150946] [2023-11-29 05:42:19,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525150946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:19,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:19,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:42:19,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725307089] [2023-11-29 05:42:19,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:19,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:42:19,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:19,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:42:19,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:42:19,802 INFO L87 Difference]: Start difference. First operand 2201 states and 2507 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-29 05:42:21,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:21,527 INFO L93 Difference]: Finished difference Result 3316 states and 3795 transitions. [2023-11-29 05:42:21,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 05:42:21,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 168 [2023-11-29 05:42:21,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:21,532 INFO L225 Difference]: With dead ends: 3316 [2023-11-29 05:42:21,532 INFO L226 Difference]: Without dead ends: 2125 [2023-11-29 05:42:21,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:42:21,535 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 106 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:21,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 181 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 05:42:21,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2023-11-29 05:42:22,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2117. [2023-11-29 05:42:22,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 1477 states have (on average 1.081922816519973) internal successors, (1598), 1509 states have internal predecessors, (1598), 377 states have call successors, (377), 223 states have call predecessors, (377), 262 states have return successors, (420), 384 states have call predecessors, (420), 357 states have call successors, (420) [2023-11-29 05:42:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 2395 transitions. [2023-11-29 05:42:22,109 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 2395 transitions. Word has length 168 [2023-11-29 05:42:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:22,109 INFO L495 AbstractCegarLoop]: Abstraction has 2117 states and 2395 transitions. [2023-11-29 05:42:22,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-29 05:42:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 2395 transitions. [2023-11-29 05:42:22,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-29 05:42:22,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:22,111 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:42:22,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-11-29 05:42:22,111 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:22,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:22,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1472701708, now seen corresponding path program 1 times [2023-11-29 05:42:22,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:22,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306006874] [2023-11-29 05:42:22,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:22,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:22,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:42:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:22,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:42:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:22,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:22,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:42:22,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:22,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:42:22,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:42:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:42:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:42:22,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:23,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:23,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:42:23,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:23,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:42:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:42:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:23,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:42:23,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:23,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:42:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:23,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:42:23,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:23,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-29 05:42:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:23,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-29 05:42:23,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:23,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-29 05:42:23,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-29 05:42:23,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306006874] [2023-11-29 05:42:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306006874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:23,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:23,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 05:42:23,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792486187] [2023-11-29 05:42:23,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:23,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:42:23,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:23,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:42:23,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:42:23,204 INFO L87 Difference]: Start difference. First operand 2117 states and 2395 transitions. Second operand has 14 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-29 05:42:26,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:26,230 INFO L93 Difference]: Finished difference Result 2129 states and 2406 transitions. [2023-11-29 05:42:26,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:42:26,230 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 170 [2023-11-29 05:42:26,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:26,234 INFO L225 Difference]: With dead ends: 2129 [2023-11-29 05:42:26,234 INFO L226 Difference]: Without dead ends: 2105 [2023-11-29 05:42:26,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:42:26,235 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 128 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:26,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 561 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 05:42:26,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2023-11-29 05:42:26,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2105. [2023-11-29 05:42:26,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2105 states, 1468 states have (on average 1.0817438692098094) internal successors, (1588), 1500 states have internal predecessors, (1588), 373 states have call successors, (373), 223 states have call predecessors, (373), 263 states have return successors, (416), 381 states have call predecessors, (416), 354 states have call successors, (416) [2023-11-29 05:42:26,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2105 states to 2105 states and 2377 transitions. [2023-11-29 05:42:26,664 INFO L78 Accepts]: Start accepts. Automaton has 2105 states and 2377 transitions. Word has length 170 [2023-11-29 05:42:26,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:26,664 INFO L495 AbstractCegarLoop]: Abstraction has 2105 states and 2377 transitions. [2023-11-29 05:42:26,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.166666666666667) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-29 05:42:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2105 states and 2377 transitions. [2023-11-29 05:42:26,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-29 05:42:26,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:26,666 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:42:26,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-11-29 05:42:26,667 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:26,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:26,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1024946395, now seen corresponding path program 1 times [2023-11-29 05:42:26,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:26,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684151291] [2023-11-29 05:42:26,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:26,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:42:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:42:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:42:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:42:27,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:42:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:42:27,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:42:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:42:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:42:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:42:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:42:27,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:42:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:42:27,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 05:42:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-29 05:42:27,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-29 05:42:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:27,881 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-29 05:42:27,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:27,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684151291] [2023-11-29 05:42:27,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684151291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:27,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:27,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-29 05:42:27,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649770177] [2023-11-29 05:42:27,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:27,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:42:27,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:27,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:42:27,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:42:27,883 INFO L87 Difference]: Start difference. First operand 2105 states and 2377 transitions. Second operand has 14 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-29 05:42:30,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:30,900 INFO L93 Difference]: Finished difference Result 2139 states and 2410 transitions. [2023-11-29 05:42:30,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:42:30,900 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 171 [2023-11-29 05:42:30,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:30,904 INFO L225 Difference]: With dead ends: 2139 [2023-11-29 05:42:30,905 INFO L226 Difference]: Without dead ends: 2042 [2023-11-29 05:42:30,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:42:30,906 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 128 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:30,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 561 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1672 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 05:42:30,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2023-11-29 05:42:31,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1758. [2023-11-29 05:42:31,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1215 states have (on average 1.0781893004115226) internal successors, (1310), 1237 states have internal predecessors, (1310), 319 states have call successors, (319), 194 states have call predecessors, (319), 223 states have return successors, (352), 326 states have call predecessors, (352), 305 states have call successors, (352) [2023-11-29 05:42:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 1981 transitions. [2023-11-29 05:42:31,316 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 1981 transitions. Word has length 171 [2023-11-29 05:42:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:31,316 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 1981 transitions. [2023-11-29 05:42:31,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 2 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-29 05:42:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 1981 transitions. [2023-11-29 05:42:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-29 05:42:31,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:31,318 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:42:31,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-11-29 05:42:31,318 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:31,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:31,319 INFO L85 PathProgramCache]: Analyzing trace with hash -254508916, now seen corresponding path program 1 times [2023-11-29 05:42:31,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:31,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021448210] [2023-11-29 05:42:31,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:31,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:42:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:42:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:42:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:42:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:42:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:42:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:42:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:42:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:42:31,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 05:42:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:42:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 05:42:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:42:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:42:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:42:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:32,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:42:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:32,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-29 05:42:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:32,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-29 05:42:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:32,101 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-11-29 05:42:32,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:32,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021448210] [2023-11-29 05:42:32,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021448210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:42:32,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:42:32,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 05:42:32,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493547393] [2023-11-29 05:42:32,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:42:32,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 05:42:32,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:32,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 05:42:32,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-29 05:42:32,103 INFO L87 Difference]: Start difference. First operand 1758 states and 1981 transitions. Second operand has 12 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-29 05:42:36,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:42:36,009 INFO L93 Difference]: Finished difference Result 1813 states and 2040 transitions. [2023-11-29 05:42:36,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 05:42:36,010 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 176 [2023-11-29 05:42:36,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:42:36,014 INFO L225 Difference]: With dead ends: 1813 [2023-11-29 05:42:36,014 INFO L226 Difference]: Without dead ends: 1811 [2023-11-29 05:42:36,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-11-29 05:42:36,015 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 189 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-29 05:42:36,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 453 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-29 05:42:36,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1811 states. [2023-11-29 05:42:36,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1811 to 1791. [2023-11-29 05:42:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1239 states have (on average 1.0766747376916868) internal successors, (1334), 1264 states have internal predecessors, (1334), 321 states have call successors, (321), 198 states have call predecessors, (321), 230 states have return successors, (357), 328 states have call predecessors, (357), 307 states have call successors, (357) [2023-11-29 05:42:36,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2012 transitions. [2023-11-29 05:42:36,403 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2012 transitions. Word has length 176 [2023-11-29 05:42:36,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:42:36,403 INFO L495 AbstractCegarLoop]: Abstraction has 1791 states and 2012 transitions. [2023-11-29 05:42:36,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-29 05:42:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2012 transitions. [2023-11-29 05:42:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-29 05:42:36,405 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:42:36,405 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:42:36,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-11-29 05:42:36,405 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:42:36,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:42:36,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1799281592, now seen corresponding path program 1 times [2023-11-29 05:42:36,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:42:36,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835188566] [2023-11-29 05:42:36,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:36,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:42:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:42:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:42:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:42:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:42:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:42:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:42:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:42:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-29 05:42:38,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:42:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:38,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:42:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:39,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 05:42:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:42:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:39,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-29 05:42:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:39,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:42:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:39,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-29 05:42:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:39,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-29 05:42:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:39,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-29 05:42:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:39,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-29 05:42:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:39,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-29 05:42:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 76 proven. 23 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-29 05:42:39,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:42:39,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835188566] [2023-11-29 05:42:39,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835188566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:39,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497533894] [2023-11-29 05:42:39,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:42:39,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:42:39,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:42:39,617 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:42:39,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 05:42:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:42:40,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 2813 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-29 05:42:40,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:42:40,283 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 05:42:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 91 proven. 70 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-29 05:42:42,805 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:42:43,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497533894] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:42:43,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:42:43,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 45 [2023-11-29 05:42:43,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856758134] [2023-11-29 05:42:43,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:42:43,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-29 05:42:43,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:42:43,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-29 05:42:43,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2927, Unknown=0, NotChecked=0, Total=3080 [2023-11-29 05:42:43,650 INFO L87 Difference]: Start difference. First operand 1791 states and 2012 transitions. Second operand has 45 states, 36 states have (on average 4.305555555555555) internal successors, (155), 38 states have internal predecessors, (155), 11 states have call successors, (41), 6 states have call predecessors, (41), 11 states have return successors, (40), 11 states have call predecessors, (40), 10 states have call successors, (40) [2023-11-29 05:42:51,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:42:59,831 WARN L539 Checker$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 05:43:04,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:43:15,116 WARN L539 Checker$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 05:43:19,357 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 05:43:24,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:43:24,698 INFO L93 Difference]: Finished difference Result 1829 states and 2051 transitions. [2023-11-29 05:43:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 05:43:24,699 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 36 states have (on average 4.305555555555555) internal successors, (155), 38 states have internal predecessors, (155), 11 states have call successors, (41), 6 states have call predecessors, (41), 11 states have return successors, (40), 11 states have call predecessors, (40), 10 states have call successors, (40) Word has length 176 [2023-11-29 05:43:24,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:43:24,702 INFO L225 Difference]: With dead ends: 1829 [2023-11-29 05:43:24,702 INFO L226 Difference]: Without dead ends: 1827 [2023-11-29 05:43:24,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 210 SyntacticMatches, 13 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2619 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=1080, Invalid=10692, Unknown=0, NotChecked=0, Total=11772 [2023-11-29 05:43:24,704 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 560 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 7139 mSolverCounterSat, 354 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 7498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 7139 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:43:24,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 990 Invalid, 7498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 7139 Invalid, 5 Unknown, 0 Unchecked, 35.0s Time] [2023-11-29 05:43:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1827 states. [2023-11-29 05:43:25,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1827 to 1711. [2023-11-29 05:43:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1711 states, 1191 states have (on average 1.0747271200671704) internal successors, (1280), 1212 states have internal predecessors, (1280), 301 states have call successors, (301), 190 states have call predecessors, (301), 218 states have return successors, (335), 308 states have call predecessors, (335), 289 states have call successors, (335) [2023-11-29 05:43:25,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1711 states to 1711 states and 1916 transitions. [2023-11-29 05:43:25,085 INFO L78 Accepts]: Start accepts. Automaton has 1711 states and 1916 transitions. Word has length 176 [2023-11-29 05:43:25,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:43:25,086 INFO L495 AbstractCegarLoop]: Abstraction has 1711 states and 1916 transitions. [2023-11-29 05:43:25,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 36 states have (on average 4.305555555555555) internal successors, (155), 38 states have internal predecessors, (155), 11 states have call successors, (41), 6 states have call predecessors, (41), 11 states have return successors, (40), 11 states have call predecessors, (40), 10 states have call successors, (40) [2023-11-29 05:43:25,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1711 states and 1916 transitions. [2023-11-29 05:43:25,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-29 05:43:25,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:43:25,088 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:25,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 05:43:25,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 05:43:25,289 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:43:25,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:43:25,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1445289582, now seen corresponding path program 1 times [2023-11-29 05:43:25,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:43:25,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101406177] [2023-11-29 05:43:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:25,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:43:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:43:26,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:43:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:43:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:43:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:43:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:43:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:43:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:43:26,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:43:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:43:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:43:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:43:26,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 05:43:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:43:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 05:43:26,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:43:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 05:43:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 05:43:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:43:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 05:43:26,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-29 05:43:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 05:43:26,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-29 05:43:26,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:43:26,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101406177] [2023-11-29 05:43:26,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101406177] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:43:26,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940751115] [2023-11-29 05:43:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:43:26,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:43:26,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:43:26,647 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:43:26,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 05:43:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:43:27,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 2860 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 05:43:27,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:43:27,318 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 05:43:31,845 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_117| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_117|) 8))) (and (= (select (select |c_#memory_$Pointer$#6.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_13|) (+ 8 |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_13|)) .cse0) (not (= 0 .cse0))))) is different from true [2023-11-29 05:43:35,954 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_118| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_14| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_118|) 8))) (and (not (= .cse0 0)) (= (select (select |c_#memory_$Pointer$#6.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_14|) (+ 8 |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_14|)) .cse0)))) is different from true [2023-11-29 05:43:40,042 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_119| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_15| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_15| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_119|) 8))) (and (not (= .cse0 0)) (= .cse0 (select (select |c_#memory_$Pointer$#6.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_15|) (+ 8 |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_15|)))))) is different from true [2023-11-29 05:43:44,167 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_120| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_120|) 8))) (and (not (= .cse0 0)) (= .cse0 (select (select |c_#memory_$Pointer$#6.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_16|) (+ 8 |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_16|)))))) is different from true [2023-11-29 05:43:48,309 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_121| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_17| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_17| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_121|) 8))) (and (= (select (select |c_#memory_$Pointer$#6.base| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_17|) (+ 8 |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_17|)) .cse0) (not (= .cse0 0))))) is different from true [2023-11-29 05:43:48,399 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 22 treesize of output 14 [2023-11-29 05:43:48,782 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 23 treesize of output 11 [2023-11-29 05:43:48,784 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 23 treesize of output 11 [2023-11-29 05:43:48,963 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 53 proven. 44 refuted. 0 times theorem prover too weak. 34 trivial. 67 not checked. [2023-11-29 05:43:48,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:43:49,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940751115] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:43:49,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:43:49,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 29] total 40 [2023-11-29 05:43:49,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459510820] [2023-11-29 05:43:49,424 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:43:49,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 05:43:49,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:43:49,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 05:43:49,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1611, Unknown=5, NotChecked=420, Total=2162 [2023-11-29 05:43:49,426 INFO L87 Difference]: Start difference. First operand 1711 states and 1916 transitions. Second operand has 40 states, 35 states have (on average 4.742857142857143) internal successors, (166), 33 states have internal predecessors, (166), 13 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (42), 12 states have call predecessors, (42), 11 states have call successors, (42) [2023-11-29 05:43:53,754 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 05:44:01,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:44:07,114 WARN L539 Checker$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 05:44:11,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:44:15,250 WARN L539 Checker$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 05:44:19,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:44:23,272 WARN L539 Checker$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 05:44:27,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:44:37,899 WARN L539 Checker$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 05:44:42,110 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 05:44:46,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:46,349 INFO L93 Difference]: Finished difference Result 2238 states and 2492 transitions. [2023-11-29 05:44:46,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-29 05:44:46,350 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 4.742857142857143) internal successors, (166), 33 states have internal predecessors, (166), 13 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (42), 12 states have call predecessors, (42), 11 states have call successors, (42) Word has length 180 [2023-11-29 05:44:46,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:46,352 INFO L225 Difference]: With dead ends: 2238 [2023-11-29 05:44:46,353 INFO L226 Difference]: Without dead ends: 1555 [2023-11-29 05:44:46,355 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 202 SyntacticMatches, 14 SemanticMatches, 96 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2244 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=922, Invalid=7649, Unknown=5, NotChecked=930, Total=9506 [2023-11-29 05:44:46,355 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 753 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 6996 mSolverCounterSat, 600 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 9703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 6996 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 2097 IncrementalHoareTripleChecker+Unchecked, 52.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:46,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 741 Invalid, 9703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 6996 Invalid, 10 Unknown, 2097 Unchecked, 52.6s Time] [2023-11-29 05:44:46,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1555 states. [2023-11-29 05:44:46,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1555 to 1387. [2023-11-29 05:44:46,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 980 states have (on average 1.0489795918367346) internal successors, (1028), 993 states have internal predecessors, (1028), 235 states have call successors, (235), 157 states have call predecessors, (235), 171 states have return successors, (251), 236 states have call predecessors, (251), 227 states have call successors, (251) [2023-11-29 05:44:46,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1514 transitions. [2023-11-29 05:44:46,716 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1514 transitions. Word has length 180 [2023-11-29 05:44:46,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:46,716 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 1514 transitions. [2023-11-29 05:44:46,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 4.742857142857143) internal successors, (166), 33 states have internal predecessors, (166), 13 states have call successors, (46), 15 states have call predecessors, (46), 14 states have return successors, (42), 12 states have call predecessors, (42), 11 states have call successors, (42) [2023-11-29 05:44:46,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1514 transitions. [2023-11-29 05:44:46,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-29 05:44:46,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:46,718 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:44:46,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 05:44:46,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:46,919 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:46,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:46,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1406254974, now seen corresponding path program 1 times [2023-11-29 05:44:46,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:46,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443632821] [2023-11-29 05:44:46,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:46,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:44:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:44:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:44:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:44:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:44:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:44:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:44:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:44:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:44:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-29 05:44:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:47,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-29 05:44:47,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-29 05:44:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-29 05:44:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-29 05:44:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-29 05:44:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-29 05:44:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-29 05:44:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-29 05:44:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:47,361 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-29 05:44:47,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:47,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443632821] [2023-11-29 05:44:47,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443632821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:44:47,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:44:47,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:44:47,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024350911] [2023-11-29 05:44:47,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:47,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 05:44:47,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:47,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 05:44:47,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 05:44:47,363 INFO L87 Difference]: Start difference. First operand 1387 states and 1514 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-29 05:44:49,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:49,533 INFO L93 Difference]: Finished difference Result 1547 states and 1688 transitions. [2023-11-29 05:44:49,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:44:49,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) Word has length 184 [2023-11-29 05:44:49,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:49,537 INFO L225 Difference]: With dead ends: 1547 [2023-11-29 05:44:49,537 INFO L226 Difference]: Without dead ends: 1401 [2023-11-29 05:44:49,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:44:49,538 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 229 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:49,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 275 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 05:44:49,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-11-29 05:44:49,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1383. [2023-11-29 05:44:49,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1383 states, 978 states have (on average 1.047034764826176) internal successors, (1024), 991 states have internal predecessors, (1024), 233 states have call successors, (233), 157 states have call predecessors, (233), 171 states have return successors, (249), 234 states have call predecessors, (249), 225 states have call successors, (249) [2023-11-29 05:44:49,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1383 states to 1383 states and 1506 transitions. [2023-11-29 05:44:49,890 INFO L78 Accepts]: Start accepts. Automaton has 1383 states and 1506 transitions. Word has length 184 [2023-11-29 05:44:49,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:49,891 INFO L495 AbstractCegarLoop]: Abstraction has 1383 states and 1506 transitions. [2023-11-29 05:44:49,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-29 05:44:49,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1383 states and 1506 transitions. [2023-11-29 05:44:49,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-29 05:44:49,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:49,893 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:49,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-11-29 05:44:49,893 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:49,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:49,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1708538701, now seen corresponding path program 1 times [2023-11-29 05:44:49,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:49,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034856222] [2023-11-29 05:44:49,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:49,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:50,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:50,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:44:50,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:44:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:44:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:44:50,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:44:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:44:50,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:44:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:50,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:44:50,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:44:50,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:44:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:44:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:44:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:44:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 05:44:50,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 05:44:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-29 05:44:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 05:44:50,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:44:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2023-11-29 05:44:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-29 05:44:50,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:50,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034856222] [2023-11-29 05:44:50,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034856222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:44:50,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:44:50,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 05:44:50,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956999845] [2023-11-29 05:44:50,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:44:50,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 05:44:50,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:44:50,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 05:44:50,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2023-11-29 05:44:50,866 INFO L87 Difference]: Start difference. First operand 1383 states and 1506 transitions. Second operand has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 6 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-29 05:44:54,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:44:54,427 INFO L93 Difference]: Finished difference Result 1936 states and 2114 transitions. [2023-11-29 05:44:54,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:44:54,427 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 6 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) Word has length 188 [2023-11-29 05:44:54,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:44:54,430 INFO L225 Difference]: With dead ends: 1936 [2023-11-29 05:44:54,430 INFO L226 Difference]: Without dead ends: 1386 [2023-11-29 05:44:54,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:44:54,432 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 167 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 1666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:44:54,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 446 Invalid, 1666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 05:44:54,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2023-11-29 05:44:54,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1386. [2023-11-29 05:44:54,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 981 states have (on average 1.0468909276248726) internal successors, (1027), 994 states have internal predecessors, (1027), 233 states have call successors, (233), 157 states have call predecessors, (233), 171 states have return successors, (249), 234 states have call predecessors, (249), 225 states have call successors, (249) [2023-11-29 05:44:54,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1509 transitions. [2023-11-29 05:44:54,778 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1509 transitions. Word has length 188 [2023-11-29 05:44:54,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:44:54,779 INFO L495 AbstractCegarLoop]: Abstraction has 1386 states and 1509 transitions. [2023-11-29 05:44:54,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 6 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 5 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-29 05:44:54,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1509 transitions. [2023-11-29 05:44:54,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 05:44:54,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:44:54,781 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:54,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-11-29 05:44:54,782 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:44:54,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:44:54,782 INFO L85 PathProgramCache]: Analyzing trace with hash -458316119, now seen corresponding path program 1 times [2023-11-29 05:44:54,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:44:54,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310544152] [2023-11-29 05:44:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:54,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:44:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:44:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:44:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:44:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:44:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:44:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:44:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:44:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:44:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:44:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:44:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:44:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:44:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:44:57,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 05:44:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 05:44:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-29 05:44:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:44:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 05:44:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:44:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:57,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-11-29 05:44:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:58,118 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-29 05:44:58,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:44:58,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310544152] [2023-11-29 05:44:58,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310544152] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:44:58,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801648988] [2023-11-29 05:44:58,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:44:58,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:44:58,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:44:58,119 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:44:58,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 05:44:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:44:59,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-29 05:44:59,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:45:07,389 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 05:45:07,390 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 51 treesize of output 43 [2023-11-29 05:45:07,488 INFO L349 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2023-11-29 05:45:07,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 165 treesize of output 157 [2023-11-29 05:45:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 158 proven. 53 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-29 05:45:09,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:45:10,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801648988] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:45:10,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:45:10,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 32] total 53 [2023-11-29 05:45:10,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16583317] [2023-11-29 05:45:10,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:45:10,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-11-29 05:45:10,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:45:10,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-11-29 05:45:10,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=3550, Unknown=0, NotChecked=0, Total=3782 [2023-11-29 05:45:10,454 INFO L87 Difference]: Start difference. First operand 1386 states and 1509 transitions. Second operand has 53 states, 47 states have (on average 4.042553191489362) internal successors, (190), 45 states have internal predecessors, (190), 18 states have call successors, (49), 9 states have call predecessors, (49), 12 states have return successors, (46), 16 states have call predecessors, (46), 17 states have call successors, (46) [2023-11-29 05:45:22,248 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 05:45:26,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:45:31,369 WARN L539 Checker$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 05:45:35,693 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 05:46:03,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:46:03,033 INFO L93 Difference]: Finished difference Result 2072 states and 2255 transitions. [2023-11-29 05:46:03,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2023-11-29 05:46:03,034 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 47 states have (on average 4.042553191489362) internal successors, (190), 45 states have internal predecessors, (190), 18 states have call successors, (49), 9 states have call predecessors, (49), 12 states have return successors, (46), 16 states have call predecessors, (46), 17 states have call successors, (46) Word has length 189 [2023-11-29 05:46:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:46:03,038 INFO L225 Difference]: With dead ends: 2072 [2023-11-29 05:46:03,038 INFO L226 Difference]: Without dead ends: 1741 [2023-11-29 05:46:03,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 212 SyntacticMatches, 23 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7631 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=1720, Invalid=21842, Unknown=0, NotChecked=0, Total=23562 [2023-11-29 05:46:03,040 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 691 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 10426 mSolverCounterSat, 607 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 11037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 10426 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:46:03,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 893 Invalid, 11037 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [607 Valid, 10426 Invalid, 4 Unknown, 0 Unchecked, 40.0s Time] [2023-11-29 05:46:03,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2023-11-29 05:46:03,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1389. [2023-11-29 05:46:03,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 986 states have (on average 1.0466531440162272) internal successors, (1032), 1001 states have internal predecessors, (1032), 230 states have call successors, (230), 155 states have call predecessors, (230), 172 states have return successors, (247), 232 states have call predecessors, (247), 222 states have call successors, (247) [2023-11-29 05:46:03,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1509 transitions. [2023-11-29 05:46:03,443 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1509 transitions. Word has length 189 [2023-11-29 05:46:03,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:46:03,443 INFO L495 AbstractCegarLoop]: Abstraction has 1389 states and 1509 transitions. [2023-11-29 05:46:03,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 47 states have (on average 4.042553191489362) internal successors, (190), 45 states have internal predecessors, (190), 18 states have call successors, (49), 9 states have call predecessors, (49), 12 states have return successors, (46), 16 states have call predecessors, (46), 17 states have call successors, (46) [2023-11-29 05:46:03,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1509 transitions. [2023-11-29 05:46:03,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-29 05:46:03,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:46:03,446 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:46:03,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-29 05:46:03,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:03,646 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:46:03,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:46:03,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1417943319, now seen corresponding path program 1 times [2023-11-29 05:46:03,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:46:03,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921315833] [2023-11-29 05:46:03,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:03,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:46:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:46:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-29 05:46:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-29 05:46:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:46:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-29 05:46:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-29 05:46:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-29 05:46:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-29 05:46:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-29 05:46:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:46:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-29 05:46:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-29 05:46:07,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-29 05:46:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-29 05:46:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-29 05:46:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-29 05:46:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-29 05:46:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-29 05:46:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-29 05:46:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:46:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-29 05:46:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-29 05:46:08,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-29 05:46:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:08,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-11-29 05:46:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2023-11-29 05:46:08,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:46:08,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921315833] [2023-11-29 05:46:08,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921315833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:46:08,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568714807] [2023-11-29 05:46:08,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:46:08,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:46:08,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:46:08,334 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:46:08,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c61a2c07-e2eb-4b74-922f-61ccff6f84b5/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 05:46:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:46:11,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 200 conjunts are in the unsatisfiable core [2023-11-29 05:46:11,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:46:11,529 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 25 treesize of output 13 [2023-11-29 05:46:11,533 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 11 treesize of output 7 [2023-11-29 05:46:14,996 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 15 treesize of output 1 [2023-11-29 05:46:15,000 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 11 treesize of output 7