./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:21:53,525 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:21:53,593 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:21:53,598 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:21:53,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:21:53,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:21:53,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:21:53,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:21:53,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:21:53,652 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:21:53,652 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:21:53,653 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:21:53,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:21:53,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:21:53,654 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:21:53,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:21:53,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:21:53,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:21:53,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:21:53,655 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:21:53,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:21:53,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:21:53,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:21:53,656 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:21:53,656 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:21:53,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:21:53,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:21:53,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:21:53,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:21:53,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:21:53,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:21:53,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:21:53,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:21:53,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:21:53,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:21:53,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:21:53,658 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:21:53,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:21:53,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:21:53,659 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d9514ee1b6f3a0027f117bcf81d6b26d525fe99251459ecef3c46cad248dd1f Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:21:53,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:21:53,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:21:53,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:21:53,865 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:21:53,865 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:21:53,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2023-11-23 08:21:54,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:21:55,258 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:21:55,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i [2023-11-23 08:21:55,298 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ddd3b0a7/db64155fe9da444896191182c984f5d0/FLAG6af4a36cd [2023-11-23 08:21:55,313 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ddd3b0a7/db64155fe9da444896191182c984f5d0 [2023-11-23 08:21:55,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:21:55,316 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:21:55,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:21:55,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:21:55,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:21:55,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:21:55" (1/1) ... [2023-11-23 08:21:55,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b68f0bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:55, skipping insertion in model container [2023-11-23 08:21:55,324 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:21:55" (1/1) ... [2023-11-23 08:21:55,403 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:21:55,587 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2023-11-23 08:21:55,593 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2023-11-23 08:21:56,053 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,053 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,054 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,054 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,055 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,062 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,062 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,064 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,064 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,065 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,067 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,067 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,068 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,287 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:21:56,288 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:21:56,288 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:21:56,289 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:21:56,292 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:21:56,293 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:21:56,294 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:21:56,294 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:21:56,295 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:21:56,296 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:21:56,425 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,436 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,532 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,532 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,620 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:21:56,667 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:21:56,681 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4510,4523] [2023-11-23 08:21:56,682 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_string_harness.i[4570,4583] [2023-11-23 08:21:56,710 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,711 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,711 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,712 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,712 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,743 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,743 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,744 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,744 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,744 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,745 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,745 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,745 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,767 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:21:56,768 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:21:56,768 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:21:56,769 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:21:56,769 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:21:56,769 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:21:56,770 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:21:56,770 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:21:56,770 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:21:56,770 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:21:56,788 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,791 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,812 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8553] [2023-11-23 08:21:56,813 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,813 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:56,820 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [9039-9050] [2023-11-23 08:21:56,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:21:57,059 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,060 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,060 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,060 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,060 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,060 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,061 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,061 WARN L675 CHandler]: The function s_global_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,061 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,061 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,061 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,062 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,062 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,062 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,062 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,063 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,063 WARN L675 CHandler]: The function tl_thread_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,063 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,063 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,063 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:57,069 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:21:57,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57 WrapperNode [2023-11-23 08:21:57,070 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:21:57,071 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:21:57,071 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:21:57,071 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:21:57,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57" (1/1) ... [2023-11-23 08:21:57,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57" (1/1) ... [2023-11-23 08:21:57,243 INFO L138 Inliner]: procedures = 694, calls = 3058, calls flagged for inlining = 70, calls inlined = 10, statements flattened = 965 [2023-11-23 08:21:57,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:21:57,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:21:57,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:21:57,245 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:21:57,252 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57" (1/1) ... [2023-11-23 08:21:57,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57" (1/1) ... [2023-11-23 08:21:57,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57" (1/1) ... [2023-11-23 08:21:57,262 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57" (1/1) ... [2023-11-23 08:21:57,303 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57" (1/1) ... [2023-11-23 08:21:57,307 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57" (1/1) ... [2023-11-23 08:21:57,322 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57" (1/1) ... [2023-11-23 08:21:57,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57" (1/1) ... [2023-11-23 08:21:57,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:21:57,342 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:21:57,343 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:21:57,343 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:21:57,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57" (1/1) ... [2023-11-23 08:21:57,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:21:57,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:57,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:21:57,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:21:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-23 08:21:57,497 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-23 08:21:57,497 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 08:21:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 08:21:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-23 08:21:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-23 08:21:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:21:57,498 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:21:57,499 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:21:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 08:21:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 08:21:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 08:21:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:21:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 08:21:57,500 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 08:21:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:21:57,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:21:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:21:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:21:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:21:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:21:57,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:21:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:21:57,501 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:21:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:21:57,501 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:21:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 08:21:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 08:21:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2023-11-23 08:21:57,502 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2023-11-23 08:21:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:21:57,502 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:21:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:21:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:21:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-23 08:21:57,502 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-23 08:21:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:21:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:21:57,503 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:21:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 08:21:57,503 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 08:21:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:21:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-23 08:21:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:21:57,780 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:21:57,782 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:21:58,489 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:21:58,564 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:21:58,564 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 08:21:58,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:21:58 BoogieIcfgContainer [2023-11-23 08:21:58,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:21:58,567 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:21:58,567 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:21:58,569 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:21:58,569 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:21:55" (1/3) ... [2023-11-23 08:21:58,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d434731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:21:58, skipping insertion in model container [2023-11-23 08:21:58,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:57" (2/3) ... [2023-11-23 08:21:58,570 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d434731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:21:58, skipping insertion in model container [2023-11-23 08:21:58,570 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:21:58" (3/3) ... [2023-11-23 08:21:58,571 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_string_harness.i [2023-11-23 08:21:58,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:21:58,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:21:58,619 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:21:58,625 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;@4ad6088f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:21:58,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:21:58,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 102 states have (on average 1.303921568627451) internal successors, (133), 103 states have internal predecessors, (133), 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) [2023-11-23 08:21:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 08:21:58,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:58,639 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:58,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:58,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:58,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2102241583, now seen corresponding path program 1 times [2023-11-23 08:21:58,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:58,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842640927] [2023-11-23 08:21:58,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:58,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:59,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:21:59,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:59,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:59,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:59,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:21:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:59,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:21:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:21:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:59,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:21:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 08:21:59,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:59,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842640927] [2023-11-23 08:21:59,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842640927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:59,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:21:59,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 08:21:59,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622741095] [2023-11-23 08:21:59,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:59,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 08:21:59,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:59,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 08:21:59,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:21:59,247 INFO L87 Difference]: Start difference. First operand has 165 states, 102 states have (on average 1.303921568627451) internal successors, (133), 103 states have internal predecessors, (133), 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 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 08:21:59,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:59,572 INFO L93 Difference]: Finished difference Result 322 states and 476 transitions. [2023-11-23 08:21:59,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 08:21:59,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-11-23 08:21:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:59,581 INFO L225 Difference]: With dead ends: 322 [2023-11-23 08:21:59,581 INFO L226 Difference]: Without dead ends: 163 [2023-11-23 08:21:59,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:21:59,587 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 78 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:59,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 191 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:21:59,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-23 08:21:59,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2023-11-23 08:21:59,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 101 states have (on average 1.2871287128712872) internal successors, (130), 102 states have internal predecessors, (130), 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) [2023-11-23 08:21:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 225 transitions. [2023-11-23 08:21:59,624 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 225 transitions. Word has length 56 [2023-11-23 08:21:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:59,625 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 225 transitions. [2023-11-23 08:21:59,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 08:21:59,626 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 225 transitions. [2023-11-23 08:21:59,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 08:21:59,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:59,628 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:59,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:21:59,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:59,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:59,629 INFO L85 PathProgramCache]: Analyzing trace with hash 585636911, now seen corresponding path program 1 times [2023-11-23 08:21:59,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:59,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893563983] [2023-11-23 08:21:59,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:59,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:59,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:59,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:59,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:21:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:00,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:00,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:00,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:22:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:22:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:00,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:22:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 08:22:00,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:00,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893563983] [2023-11-23 08:22:00,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893563983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:00,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:00,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:22:00,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879187265] [2023-11-23 08:22:00,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:00,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:22:00,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:00,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:22:00,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:22:00,060 INFO L87 Difference]: Start difference. First operand 163 states and 225 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 08:22:00,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:00,696 INFO L93 Difference]: Finished difference Result 293 states and 411 transitions. [2023-11-23 08:22:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:22:00,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2023-11-23 08:22:00,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:00,698 INFO L225 Difference]: With dead ends: 293 [2023-11-23 08:22:00,699 INFO L226 Difference]: Without dead ends: 165 [2023-11-23 08:22:00,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:22:00,700 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 146 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:00,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 406 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:22:00,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-23 08:22:00,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2023-11-23 08:22:00,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 104 states have internal predecessors, (131), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2023-11-23 08:22:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 230 transitions. [2023-11-23 08:22:00,738 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 230 transitions. Word has length 56 [2023-11-23 08:22:00,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:00,739 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 230 transitions. [2023-11-23 08:22:00,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 08:22:00,739 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 230 transitions. [2023-11-23 08:22:00,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 08:22:00,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:00,745 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:22:00,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 08:22:00,745 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:00,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:00,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1864991964, now seen corresponding path program 1 times [2023-11-23 08:22:00,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:00,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880416596] [2023-11-23 08:22:00,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:00,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:01,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:01,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:01,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:01,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:01,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:01,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:22:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:22:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:01,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:22:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 08:22:01,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:01,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880416596] [2023-11-23 08:22:01,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880416596] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:01,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:01,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:22:01,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352886235] [2023-11-23 08:22:01,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:01,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:22:01,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:01,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:22:01,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:22:01,495 INFO L87 Difference]: Start difference. First operand 165 states and 230 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 08:22:02,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:02,130 INFO L93 Difference]: Finished difference Result 171 states and 235 transitions. [2023-11-23 08:22:02,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:22:02,131 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2023-11-23 08:22:02,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:02,132 INFO L225 Difference]: With dead ends: 171 [2023-11-23 08:22:02,132 INFO L226 Difference]: Without dead ends: 169 [2023-11-23 08:22:02,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:22:02,133 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 172 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:02,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 460 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:22:02,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-23 08:22:02,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2023-11-23 08:22:02,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 105 states have (on average 1.276190476190476) internal successors, (134), 107 states have internal predecessors, (134), 48 states have call successors, (48), 14 states have call predecessors, (48), 15 states have return successors, (51), 47 states have call predecessors, (51), 47 states have call successors, (51) [2023-11-23 08:22:02,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 233 transitions. [2023-11-23 08:22:02,144 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 233 transitions. Word has length 62 [2023-11-23 08:22:02,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:02,144 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 233 transitions. [2023-11-23 08:22:02,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 6 states have internal predecessors, (35), 4 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 08:22:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 233 transitions. [2023-11-23 08:22:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 08:22:02,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:02,146 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-23 08:22:02,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 08:22:02,146 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:02,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:02,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1890586222, now seen corresponding path program 1 times [2023-11-23 08:22:02,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:02,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983925989] [2023-11-23 08:22:02,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:02,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:03,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:03,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:03,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:03,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:22:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:03,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:22:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:03,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:22:03,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:03,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:22:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 08:22:03,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:03,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983925989] [2023-11-23 08:22:03,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983925989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:03,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:03,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:22:03,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780596520] [2023-11-23 08:22:03,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:03,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:22:03,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:22:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:22:03,373 INFO L87 Difference]: Start difference. First operand 169 states and 233 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 08:22:04,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:04,308 INFO L93 Difference]: Finished difference Result 231 states and 327 transitions. [2023-11-23 08:22:04,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:22:04,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 68 [2023-11-23 08:22:04,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:04,311 INFO L225 Difference]: With dead ends: 231 [2023-11-23 08:22:04,311 INFO L226 Difference]: Without dead ends: 229 [2023-11-23 08:22:04,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:22:04,312 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 126 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:04,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 509 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:22:04,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-23 08:22:04,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 191. [2023-11-23 08:22:04,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 120 states have (on average 1.2833333333333334) internal successors, (154), 123 states have internal predecessors, (154), 54 states have call successors, (54), 15 states have call predecessors, (54), 16 states have return successors, (58), 52 states have call predecessors, (58), 53 states have call successors, (58) [2023-11-23 08:22:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 266 transitions. [2023-11-23 08:22:04,329 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 266 transitions. Word has length 68 [2023-11-23 08:22:04,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:04,329 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 266 transitions. [2023-11-23 08:22:04,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 08:22:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 266 transitions. [2023-11-23 08:22:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 08:22:04,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:04,331 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:22:04,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 08:22:04,331 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:04,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:04,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1165709591, now seen corresponding path program 1 times [2023-11-23 08:22:04,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:04,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75360228] [2023-11-23 08:22:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:04,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:04,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:04,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:04,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:04,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:04,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:22:04,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:04,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:22:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:22:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:04,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 08:22:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:04,649 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 08:22:04,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:04,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75360228] [2023-11-23 08:22:04,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75360228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:04,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:04,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:22:04,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507223891] [2023-11-23 08:22:04,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:04,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:22:04,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:04,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:22:04,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:22:04,651 INFO L87 Difference]: Start difference. First operand 191 states and 266 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 08:22:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:05,103 INFO L93 Difference]: Finished difference Result 317 states and 449 transitions. [2023-11-23 08:22:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:22:05,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 68 [2023-11-23 08:22:05,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:05,105 INFO L225 Difference]: With dead ends: 317 [2023-11-23 08:22:05,105 INFO L226 Difference]: Without dead ends: 256 [2023-11-23 08:22:05,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:22:05,106 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 100 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:05,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 376 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:22:05,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-23 08:22:05,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 237. [2023-11-23 08:22:05,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 150 states have (on average 1.28) internal successors, (192), 153 states have internal predecessors, (192), 70 states have call successors, (70), 15 states have call predecessors, (70), 16 states have return successors, (76), 68 states have call predecessors, (76), 69 states have call successors, (76) [2023-11-23 08:22:05,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 338 transitions. [2023-11-23 08:22:05,120 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 338 transitions. Word has length 68 [2023-11-23 08:22:05,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:05,121 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 338 transitions. [2023-11-23 08:22:05,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 08:22:05,121 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 338 transitions. [2023-11-23 08:22:05,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 08:22:05,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:05,122 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-23 08:22:05,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 08:22:05,122 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:05,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:05,123 INFO L85 PathProgramCache]: Analyzing trace with hash -322099586, now seen corresponding path program 1 times [2023-11-23 08:22:05,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:05,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546824928] [2023-11-23 08:22:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:05,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:05,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:06,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:06,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:06,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 08:22:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:06,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 08:22:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:06,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:22:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:22:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:06,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:22:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 08:22:06,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:06,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546824928] [2023-11-23 08:22:06,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546824928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:06,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:06,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 08:22:06,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629704944] [2023-11-23 08:22:06,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:06,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:22:06,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:06,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:22:06,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:22:06,241 INFO L87 Difference]: Start difference. First operand 237 states and 338 transitions. Second operand has 11 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 08:22:07,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:07,408 INFO L93 Difference]: Finished difference Result 473 states and 692 transitions. [2023-11-23 08:22:07,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 08:22:07,409 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 74 [2023-11-23 08:22:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:07,413 INFO L225 Difference]: With dead ends: 473 [2023-11-23 08:22:07,413 INFO L226 Difference]: Without dead ends: 280 [2023-11-23 08:22:07,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:22:07,416 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 165 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:07,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 631 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 08:22:07,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-23 08:22:07,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 273. [2023-11-23 08:22:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 171 states have (on average 1.2748538011695907) internal successors, (218), 175 states have internal predecessors, (218), 84 states have call successors, (84), 15 states have call predecessors, (84), 17 states have return successors, (98), 82 states have call predecessors, (98), 83 states have call successors, (98) [2023-11-23 08:22:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 400 transitions. [2023-11-23 08:22:07,443 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 400 transitions. Word has length 74 [2023-11-23 08:22:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:07,444 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 400 transitions. [2023-11-23 08:22:07,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 08:22:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 400 transitions. [2023-11-23 08:22:07,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-23 08:22:07,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:07,445 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-23 08:22:07,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 08:22:07,446 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:07,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:07,446 INFO L85 PathProgramCache]: Analyzing trace with hash 394578934, now seen corresponding path program 1 times [2023-11-23 08:22:07,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:07,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881884270] [2023-11-23 08:22:07,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:07,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:08,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:08,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:08,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:08,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:08,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:08,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 08:22:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:08,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:22:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:08,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 08:22:08,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 08:22:08,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:08,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:22:08,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:08,154 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-23 08:22:08,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:08,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881884270] [2023-11-23 08:22:08,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881884270] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:22:08,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43166846] [2023-11-23 08:22:08,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:08,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:22:08,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:22:08,156 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:22:08,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:22:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:08,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:22:08,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:22:08,650 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 08:22:08,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:22:08,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43166846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:08,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:22:08,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 14 [2023-11-23 08:22:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719396306] [2023-11-23 08:22:08,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:08,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:22:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:08,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:22:08,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:22:08,660 INFO L87 Difference]: Start difference. First operand 273 states and 400 transitions. Second operand has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 08:22:08,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:08,857 INFO L93 Difference]: Finished difference Result 506 states and 754 transitions. [2023-11-23 08:22:08,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:22:08,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 78 [2023-11-23 08:22:08,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:08,859 INFO L225 Difference]: With dead ends: 506 [2023-11-23 08:22:08,859 INFO L226 Difference]: Without dead ends: 277 [2023-11-23 08:22:08,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:22:08,861 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 13 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:08,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1571 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:22:08,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-23 08:22:08,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2023-11-23 08:22:08,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 174 states have (on average 1.2701149425287357) internal successors, (221), 179 states have internal predecessors, (221), 84 states have call successors, (84), 15 states have call predecessors, (84), 18 states have return successors, (107), 82 states have call predecessors, (107), 83 states have call successors, (107) [2023-11-23 08:22:08,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 412 transitions. [2023-11-23 08:22:08,885 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 412 transitions. Word has length 78 [2023-11-23 08:22:08,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:08,885 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 412 transitions. [2023-11-23 08:22:08,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 08:22:08,886 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 412 transitions. [2023-11-23 08:22:08,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 08:22:08,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:08,908 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-23 08:22:08,928 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:22:09,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:22:09,120 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:09,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:09,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1973659121, now seen corresponding path program 1 times [2023-11-23 08:22:09,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:09,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024199444] [2023-11-23 08:22:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:09,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:09,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:09,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:09,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:09,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:09,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:09,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:22:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:22:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:09,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:22:09,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:09,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:22:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:09,593 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 08:22:09,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:09,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024199444] [2023-11-23 08:22:09,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024199444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:09,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:09,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:22:09,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201348800] [2023-11-23 08:22:09,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:09,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:22:09,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:09,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:22:09,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:22:09,595 INFO L87 Difference]: Start difference. First operand 277 states and 412 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 08:22:10,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:10,169 INFO L93 Difference]: Finished difference Result 540 states and 848 transitions. [2023-11-23 08:22:10,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:22:10,170 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2023-11-23 08:22:10,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:10,171 INFO L225 Difference]: With dead ends: 540 [2023-11-23 08:22:10,172 INFO L226 Difference]: Without dead ends: 307 [2023-11-23 08:22:10,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:22:10,174 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 153 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:10,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 380 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:22:10,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-23 08:22:10,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 282. [2023-11-23 08:22:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 179 states have (on average 1.2737430167597765) internal successors, (228), 184 states have internal predecessors, (228), 84 states have call successors, (84), 15 states have call predecessors, (84), 18 states have return successors, (107), 82 states have call predecessors, (107), 83 states have call successors, (107) [2023-11-23 08:22:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 419 transitions. [2023-11-23 08:22:10,194 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 419 transitions. Word has length 80 [2023-11-23 08:22:10,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:10,194 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 419 transitions. [2023-11-23 08:22:10,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 08:22:10,194 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 419 transitions. [2023-11-23 08:22:10,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 08:22:10,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:10,196 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-23 08:22:10,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 08:22:10,196 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:10,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:10,197 INFO L85 PathProgramCache]: Analyzing trace with hash -54926989, now seen corresponding path program 1 times [2023-11-23 08:22:10,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:10,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274495347] [2023-11-23 08:22:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:10,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:10,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:10,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:10,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:22:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:22:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:22:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:22:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 08:22:10,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:10,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274495347] [2023-11-23 08:22:10,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274495347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:10,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:10,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:22:10,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848245701] [2023-11-23 08:22:10,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:10,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:22:10,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:10,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:22:10,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:22:10,427 INFO L87 Difference]: Start difference. First operand 282 states and 419 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 08:22:10,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:10,753 INFO L93 Difference]: Finished difference Result 525 states and 797 transitions. [2023-11-23 08:22:10,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:22:10,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2023-11-23 08:22:10,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:10,755 INFO L225 Difference]: With dead ends: 525 [2023-11-23 08:22:10,755 INFO L226 Difference]: Without dead ends: 287 [2023-11-23 08:22:10,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:22:10,756 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 91 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:10,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 394 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:22:10,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-23 08:22:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 284. [2023-11-23 08:22:10,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 181 states have (on average 1.270718232044199) internal successors, (230), 186 states have internal predecessors, (230), 84 states have call successors, (84), 15 states have call predecessors, (84), 18 states have return successors, (107), 82 states have call predecessors, (107), 83 states have call successors, (107) [2023-11-23 08:22:10,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 421 transitions. [2023-11-23 08:22:10,781 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 421 transitions. Word has length 80 [2023-11-23 08:22:10,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:10,781 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 421 transitions. [2023-11-23 08:22:10,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 08:22:10,782 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 421 transitions. [2023-11-23 08:22:10,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 08:22:10,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:10,783 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-23 08:22:10,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 08:22:10,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:10,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:10,797 INFO L85 PathProgramCache]: Analyzing trace with hash 2014333871, now seen corresponding path program 1 times [2023-11-23 08:22:10,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:10,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277958559] [2023-11-23 08:22:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:10,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:10,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:10,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:22:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:11,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:22:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:22:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:11,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:22:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:11,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 08:22:11,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:11,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277958559] [2023-11-23 08:22:11,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277958559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:11,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:11,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:22:11,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245951443] [2023-11-23 08:22:11,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:11,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:22:11,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:11,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:22:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:22:11,035 INFO L87 Difference]: Start difference. First operand 284 states and 421 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 08:22:11,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:11,434 INFO L93 Difference]: Finished difference Result 541 states and 830 transitions. [2023-11-23 08:22:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:22:11,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2023-11-23 08:22:11,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:11,436 INFO L225 Difference]: With dead ends: 541 [2023-11-23 08:22:11,436 INFO L226 Difference]: Without dead ends: 301 [2023-11-23 08:22:11,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:22:11,438 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 106 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:11,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 394 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:22:11,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-23 08:22:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 284. [2023-11-23 08:22:11,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 181 states have (on average 1.2651933701657458) internal successors, (229), 186 states have internal predecessors, (229), 84 states have call successors, (84), 15 states have call predecessors, (84), 18 states have return successors, (107), 82 states have call predecessors, (107), 83 states have call successors, (107) [2023-11-23 08:22:11,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 420 transitions. [2023-11-23 08:22:11,467 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 420 transitions. Word has length 80 [2023-11-23 08:22:11,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:11,468 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 420 transitions. [2023-11-23 08:22:11,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 08:22:11,468 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 420 transitions. [2023-11-23 08:22:11,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 08:22:11,469 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:11,469 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2023-11-23 08:22:11,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 08:22:11,470 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:11,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1404614419, now seen corresponding path program 1 times [2023-11-23 08:22:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:11,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120843534] [2023-11-23 08:22:11,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:11,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:13,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:13,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:13,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:13,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:13,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:22:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:13,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:22:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:13,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:22:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:22:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:13,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:14,002 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 08:22:14,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:14,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120843534] [2023-11-23 08:22:14,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120843534] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:14,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:14,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 08:22:14,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514353859] [2023-11-23 08:22:14,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:14,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:22:14,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:14,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:22:14,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:22:14,004 INFO L87 Difference]: Start difference. First operand 284 states and 420 transitions. Second operand has 11 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 7 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-23 08:22:15,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:15,129 INFO L93 Difference]: Finished difference Result 297 states and 436 transitions. [2023-11-23 08:22:15,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 08:22:15,130 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 7 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) Word has length 80 [2023-11-23 08:22:15,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:15,131 INFO L225 Difference]: With dead ends: 297 [2023-11-23 08:22:15,131 INFO L226 Difference]: Without dead ends: 295 [2023-11-23 08:22:15,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:22:15,132 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 208 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 999 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:15,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 569 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 999 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 08:22:15,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-23 08:22:15,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 288. [2023-11-23 08:22:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 184 states have (on average 1.2608695652173914) internal successors, (232), 189 states have internal predecessors, (232), 84 states have call successors, (84), 16 states have call predecessors, (84), 19 states have return successors, (107), 82 states have call predecessors, (107), 83 states have call successors, (107) [2023-11-23 08:22:15,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 423 transitions. [2023-11-23 08:22:15,156 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 423 transitions. Word has length 80 [2023-11-23 08:22:15,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:15,157 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 423 transitions. [2023-11-23 08:22:15,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 7 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 5 states have call predecessors, (10), 6 states have call successors, (10) [2023-11-23 08:22:15,157 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 423 transitions. [2023-11-23 08:22:15,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 08:22:15,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:15,158 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 08:22:15,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 08:22:15,158 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:15,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:15,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1330181792, now seen corresponding path program 1 times [2023-11-23 08:22:15,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:15,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602709379] [2023-11-23 08:22:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:15,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:15,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:15,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:22:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:16,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:22:16,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:16,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:22:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:22:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:16,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 08:22:16,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:16,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602709379] [2023-11-23 08:22:16,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602709379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:16,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:16,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 08:22:16,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833801035] [2023-11-23 08:22:16,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:16,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:22:16,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:16,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:22:16,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:22:16,082 INFO L87 Difference]: Start difference. First operand 288 states and 423 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 08:22:17,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:17,260 INFO L93 Difference]: Finished difference Result 563 states and 840 transitions. [2023-11-23 08:22:17,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:22:17,261 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 80 [2023-11-23 08:22:17,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:17,263 INFO L225 Difference]: With dead ends: 563 [2023-11-23 08:22:17,263 INFO L226 Difference]: Without dead ends: 393 [2023-11-23 08:22:17,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:22:17,264 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 187 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 1229 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:17,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 892 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1229 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 08:22:17,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-11-23 08:22:17,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 386. [2023-11-23 08:22:17,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 254 states have (on average 1.2598425196850394) internal successors, (320), 259 states have internal predecessors, (320), 110 states have call successors, (110), 17 states have call predecessors, (110), 21 states have return successors, (153), 109 states have call predecessors, (153), 109 states have call successors, (153) [2023-11-23 08:22:17,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 583 transitions. [2023-11-23 08:22:17,305 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 583 transitions. Word has length 80 [2023-11-23 08:22:17,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:17,306 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 583 transitions. [2023-11-23 08:22:17,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 8 states have internal predecessors, (46), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 08:22:17,306 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 583 transitions. [2023-11-23 08:22:17,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 08:22:17,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:17,308 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 08:22:17,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 08:22:17,308 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:17,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:17,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1025623458, now seen corresponding path program 1 times [2023-11-23 08:22:17,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:17,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307262093] [2023-11-23 08:22:17,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:17,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:17,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:19,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:19,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:19,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:19,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:22:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:22:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:19,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:22:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:19,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:22:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:19,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:19,177 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 08:22:19,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:19,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307262093] [2023-11-23 08:22:19,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307262093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:19,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:19,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 08:22:19,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395229316] [2023-11-23 08:22:19,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:19,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 08:22:19,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:19,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 08:22:19,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:22:19,180 INFO L87 Difference]: Start difference. First operand 386 states and 583 transitions. Second operand has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-23 08:22:20,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:20,606 INFO L93 Difference]: Finished difference Result 435 states and 657 transitions. [2023-11-23 08:22:20,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:22:20,606 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 80 [2023-11-23 08:22:20,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:20,609 INFO L225 Difference]: With dead ends: 435 [2023-11-23 08:22:20,609 INFO L226 Difference]: Without dead ends: 433 [2023-11-23 08:22:20,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:22:20,609 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 272 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1834 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 2015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:20,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 641 Invalid, 2015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1834 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 08:22:20,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-23 08:22:20,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 398. [2023-11-23 08:22:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 263 states have (on average 1.258555133079848) internal successors, (331), 269 states have internal predecessors, (331), 112 states have call successors, (112), 18 states have call predecessors, (112), 22 states have return successors, (155), 110 states have call predecessors, (155), 111 states have call successors, (155) [2023-11-23 08:22:20,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 598 transitions. [2023-11-23 08:22:20,659 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 598 transitions. Word has length 80 [2023-11-23 08:22:20,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:20,659 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 598 transitions. [2023-11-23 08:22:20,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 11 states have internal predecessors, (46), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-23 08:22:20,659 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 598 transitions. [2023-11-23 08:22:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-23 08:22:20,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:20,661 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:22:20,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 08:22:20,661 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:20,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:20,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1071137642, now seen corresponding path program 1 times [2023-11-23 08:22:20,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:20,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848087352] [2023-11-23 08:22:20,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:20,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:20,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:21,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:21,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:21,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:21,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:22:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:21,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:22:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:21,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:22:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:21,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:22:21,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:21,177 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 08:22:21,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:21,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848087352] [2023-11-23 08:22:21,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848087352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:21,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:21,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:22:21,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502910050] [2023-11-23 08:22:21,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:21,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:22:21,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:21,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:22:21,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:22:21,180 INFO L87 Difference]: Start difference. First operand 398 states and 598 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-23 08:22:21,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:21,843 INFO L93 Difference]: Finished difference Result 470 states and 685 transitions. [2023-11-23 08:22:21,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:22:21,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 84 [2023-11-23 08:22:21,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:21,861 INFO L225 Difference]: With dead ends: 470 [2023-11-23 08:22:21,861 INFO L226 Difference]: Without dead ends: 398 [2023-11-23 08:22:21,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:22:21,862 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 170 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:21,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 372 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:22:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-11-23 08:22:21,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2023-11-23 08:22:21,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 263 states have (on average 1.2433460076045628) internal successors, (327), 269 states have internal predecessors, (327), 112 states have call successors, (112), 18 states have call predecessors, (112), 22 states have return successors, (155), 110 states have call predecessors, (155), 111 states have call successors, (155) [2023-11-23 08:22:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 594 transitions. [2023-11-23 08:22:21,902 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 594 transitions. Word has length 84 [2023-11-23 08:22:21,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:21,903 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 594 transitions. [2023-11-23 08:22:21,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-23 08:22:21,903 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 594 transitions. [2023-11-23 08:22:21,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 08:22:21,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:21,904 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2023-11-23 08:22:21,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 08:22:21,905 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:21,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:21,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1141184151, now seen corresponding path program 1 times [2023-11-23 08:22:21,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:21,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658615541] [2023-11-23 08:22:21,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:21,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:23,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:23,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:23,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:23,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:22:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:23,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:22:23,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:23,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:22:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:23,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:22:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:23,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:22:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 08:22:23,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:23,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658615541] [2023-11-23 08:22:23,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658615541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:23,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:23,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 08:22:23,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305894037] [2023-11-23 08:22:23,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:23,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:22:23,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:23,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:22:23,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:22:23,297 INFO L87 Difference]: Start difference. First operand 398 states and 594 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 6 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-23 08:22:24,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:24,367 INFO L93 Difference]: Finished difference Result 411 states and 610 transitions. [2023-11-23 08:22:24,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:22:24,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 6 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 86 [2023-11-23 08:22:24,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:24,369 INFO L225 Difference]: With dead ends: 411 [2023-11-23 08:22:24,370 INFO L226 Difference]: Without dead ends: 409 [2023-11-23 08:22:24,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:22:24,370 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 168 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:24,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 673 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:22:24,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-23 08:22:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 402. [2023-11-23 08:22:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 266 states have (on average 1.2406015037593985) internal successors, (330), 272 states have internal predecessors, (330), 112 states have call successors, (112), 19 states have call predecessors, (112), 23 states have return successors, (155), 110 states have call predecessors, (155), 111 states have call successors, (155) [2023-11-23 08:22:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 597 transitions. [2023-11-23 08:22:24,431 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 597 transitions. Word has length 86 [2023-11-23 08:22:24,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:24,432 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 597 transitions. [2023-11-23 08:22:24,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 6 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-23 08:22:24,432 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 597 transitions. [2023-11-23 08:22:24,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 08:22:24,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:24,433 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 08:22:24,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 08:22:24,434 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:24,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1510169014, now seen corresponding path program 1 times [2023-11-23 08:22:24,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:24,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479346639] [2023-11-23 08:22:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:24,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:27,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:22:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:22:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:22:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:22:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:22:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 08:22:27,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:27,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479346639] [2023-11-23 08:22:27,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479346639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:27,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:27,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 08:22:27,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147182432] [2023-11-23 08:22:27,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:27,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 08:22:27,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:27,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 08:22:27,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:22:27,502 INFO L87 Difference]: Start difference. First operand 402 states and 597 transitions. Second operand has 14 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 9 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2023-11-23 08:22:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:29,150 INFO L93 Difference]: Finished difference Result 442 states and 658 transitions. [2023-11-23 08:22:29,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:22:29,150 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 9 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) Word has length 86 [2023-11-23 08:22:29,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:29,153 INFO L225 Difference]: With dead ends: 442 [2023-11-23 08:22:29,153 INFO L226 Difference]: Without dead ends: 440 [2023-11-23 08:22:29,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:22:29,156 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 268 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:29,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 571 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 08:22:29,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-11-23 08:22:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 408. [2023-11-23 08:22:29,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 270 states have (on average 1.237037037037037) internal successors, (334), 276 states have internal predecessors, (334), 113 states have call successors, (113), 20 states have call predecessors, (113), 24 states have return successors, (156), 111 states have call predecessors, (156), 112 states have call successors, (156) [2023-11-23 08:22:29,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 603 transitions. [2023-11-23 08:22:29,203 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 603 transitions. Word has length 86 [2023-11-23 08:22:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:29,204 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 603 transitions. [2023-11-23 08:22:29,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 12 states have internal predecessors, (47), 9 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 7 states have call predecessors, (11), 8 states have call successors, (11) [2023-11-23 08:22:29,204 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 603 transitions. [2023-11-23 08:22:29,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 08:22:29,205 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:29,205 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2023-11-23 08:22:29,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 08:22:29,206 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:29,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:29,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1025784372, now seen corresponding path program 1 times [2023-11-23 08:22:29,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:29,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582423136] [2023-11-23 08:22:29,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:29,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:31,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:22:31,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:22:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:22:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:22:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:22:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:22:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-23 08:22:31,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:31,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582423136] [2023-11-23 08:22:31,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582423136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:31,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:31,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 08:22:31,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622104625] [2023-11-23 08:22:31,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:31,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:22:31,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:31,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:22:31,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:22:31,555 INFO L87 Difference]: Start difference. First operand 408 states and 603 transitions. Second operand has 13 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 8 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-23 08:22:32,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:32,836 INFO L93 Difference]: Finished difference Result 446 states and 661 transitions. [2023-11-23 08:22:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:22:32,836 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 8 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 92 [2023-11-23 08:22:32,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:32,839 INFO L225 Difference]: With dead ends: 446 [2023-11-23 08:22:32,839 INFO L226 Difference]: Without dead ends: 444 [2023-11-23 08:22:32,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:22:32,839 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 266 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 1486 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 1486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:32,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 597 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 1486 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 08:22:32,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2023-11-23 08:22:32,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 414. [2023-11-23 08:22:32,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 274 states have (on average 1.2335766423357664) internal successors, (338), 280 states have internal predecessors, (338), 114 states have call successors, (114), 21 states have call predecessors, (114), 25 states have return successors, (157), 112 states have call predecessors, (157), 113 states have call successors, (157) [2023-11-23 08:22:32,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 609 transitions. [2023-11-23 08:22:32,932 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 609 transitions. Word has length 92 [2023-11-23 08:22:32,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:32,933 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 609 transitions. [2023-11-23 08:22:32,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 8 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-23 08:22:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 609 transitions. [2023-11-23 08:22:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 08:22:32,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:32,934 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:22:32,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 08:22:32,935 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:32,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:32,935 INFO L85 PathProgramCache]: Analyzing trace with hash -509259226, now seen corresponding path program 1 times [2023-11-23 08:22:32,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:32,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96024202] [2023-11-23 08:22:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:32,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:22:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:22:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:22:33,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:22:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:22:33,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:22:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:22:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:22:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:22:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-23 08:22:33,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96024202] [2023-11-23 08:22:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96024202] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:22:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275094192] [2023-11-23 08:22:33,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:33,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:22:33,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:22:33,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:22:33,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:22:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:33,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 2735 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 08:22:33,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:22:34,008 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-23 08:22:34,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:22:34,155 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-23 08:22:34,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275094192] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:22:34,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:22:34,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 16 [2023-11-23 08:22:34,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170331710] [2023-11-23 08:22:34,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:22:34,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 08:22:34,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:34,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 08:22:34,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:22:34,157 INFO L87 Difference]: Start difference. First operand 414 states and 609 transitions. Second operand has 16 states, 14 states have (on average 4.714285714285714) internal successors, (66), 12 states have internal predecessors, (66), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-23 08:22:35,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:35,383 INFO L93 Difference]: Finished difference Result 663 states and 970 transitions. [2023-11-23 08:22:35,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 08:22:35,383 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 4.714285714285714) internal successors, (66), 12 states have internal predecessors, (66), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) Word has length 103 [2023-11-23 08:22:35,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:35,386 INFO L225 Difference]: With dead ends: 663 [2023-11-23 08:22:35,386 INFO L226 Difference]: Without dead ends: 513 [2023-11-23 08:22:35,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:22:35,388 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 186 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 1618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:35,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 990 Invalid, 1618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1533 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 08:22:35,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-11-23 08:22:35,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 414. [2023-11-23 08:22:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 274 states have (on average 1.2335766423357664) internal successors, (338), 280 states have internal predecessors, (338), 114 states have call successors, (114), 21 states have call predecessors, (114), 25 states have return successors, (157), 112 states have call predecessors, (157), 113 states have call successors, (157) [2023-11-23 08:22:35,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 609 transitions. [2023-11-23 08:22:35,434 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 609 transitions. Word has length 103 [2023-11-23 08:22:35,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:35,435 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 609 transitions. [2023-11-23 08:22:35,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 4.714285714285714) internal successors, (66), 12 states have internal predecessors, (66), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (16), 9 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-23 08:22:35,435 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 609 transitions. [2023-11-23 08:22:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-23 08:22:35,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:35,436 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:22:35,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:22:35,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 08:22:35,653 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:35,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1127967630, now seen corresponding path program 1 times [2023-11-23 08:22:35,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:35,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021830796] [2023-11-23 08:22:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:35,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:36,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:36,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:36,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:36,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:36,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:22:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:22:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:36,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:22:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:22:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:36,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:36,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:22:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:36,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:22:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:37,001 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 08:22:37,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:37,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021830796] [2023-11-23 08:22:37,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021830796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:37,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:22:37,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 08:22:37,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193500165] [2023-11-23 08:22:37,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:37,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:22:37,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:37,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:22:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:22:37,003 INFO L87 Difference]: Start difference. First operand 414 states and 609 transitions. Second operand has 12 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 7 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 08:22:38,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:38,375 INFO L93 Difference]: Finished difference Result 497 states and 708 transitions. [2023-11-23 08:22:38,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:22:38,375 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 7 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 96 [2023-11-23 08:22:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:38,377 INFO L225 Difference]: With dead ends: 497 [2023-11-23 08:22:38,377 INFO L226 Difference]: Without dead ends: 417 [2023-11-23 08:22:38,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:22:38,379 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 156 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 1573 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 1670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:38,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 755 Invalid, 1670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1573 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 08:22:38,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2023-11-23 08:22:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 410. [2023-11-23 08:22:38,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 272 states have (on average 1.2279411764705883) internal successors, (334), 278 states have internal predecessors, (334), 112 states have call successors, (112), 21 states have call predecessors, (112), 25 states have return successors, (155), 110 states have call predecessors, (155), 111 states have call successors, (155) [2023-11-23 08:22:38,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 601 transitions. [2023-11-23 08:22:38,429 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 601 transitions. Word has length 96 [2023-11-23 08:22:38,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:38,429 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 601 transitions. [2023-11-23 08:22:38,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.1) internal successors, (51), 10 states have internal predecessors, (51), 7 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 08:22:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 601 transitions. [2023-11-23 08:22:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 08:22:38,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:38,431 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:22:38,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 08:22:38,431 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:38,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:38,432 INFO L85 PathProgramCache]: Analyzing trace with hash 910978795, now seen corresponding path program 1 times [2023-11-23 08:22:38,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:38,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4753036] [2023-11-23 08:22:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:38,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:39,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:44,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:44,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:44,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:22:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:44,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:44,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:22:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:45,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:22:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:22:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:22:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:45,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:22:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:45,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:22:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:45,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:22:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:45,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:22:45,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:45,397 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 15 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-23 08:22:45,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:45,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4753036] [2023-11-23 08:22:45,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4753036] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:22:45,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131902218] [2023-11-23 08:22:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:45,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:22:45,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:22:45,399 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:22:45,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:22:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:46,013 INFO L262 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 121 conjunts are in the unsatisfiable core [2023-11-23 08:22:46,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:22:46,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:22:46,310 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-23 08:22:46,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-23 08:22:46,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 08:22:46,377 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 19 treesize of output 1 [2023-11-23 08:22:46,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:22:46,909 INFO L349 Elim1Store]: treesize reduction 19, result has 17.4 percent of original size [2023-11-23 08:22:46,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 18 [2023-11-23 08:22:46,983 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 29 treesize of output 22 [2023-11-23 08:22:46,998 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 18 treesize of output 13 [2023-11-23 08:22:47,004 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 [2023-11-23 08:22:47,183 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 18 treesize of output 13 [2023-11-23 08:22:47,188 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 95 treesize of output 86 [2023-11-23 08:22:47,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:22:47,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 59 [2023-11-23 08:22:47,198 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 32 treesize of output 34 [2023-11-23 08:22:47,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 30 treesize of output 32 [2023-11-23 08:23:21,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 90 treesize of output 66 [2023-11-23 08:23:21,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 9 treesize of output 3 [2023-11-23 08:23:22,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:23:22,056 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 08:23:22,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 54 [2023-11-23 08:23:22,099 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 26 proven. 23 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 08:23:22,100 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:23:23,580 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse9 (select |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base|))) (let ((.cse5 (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.offset| 8)) (.cse8 (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#old_byte_from_buf~0#1.offset|)) (.cse10 (+ |c_ULTIMATE.start_save_byte_from_array_~storage#1.offset| 8)) (.cse11 (select |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~array#1.base|)) (.cse0 (mod (select .cse9 |c_ULTIMATE.start_save_byte_from_array_~storage#1.offset|) 18446744073709551616))) (and (or (< 9223372036854775807 .cse0) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| (store .cse9 .cse10 (select .cse11 (+ .cse0 |c_ULTIMATE.start_save_byte_from_array_~array#1.offset|)))))) (let ((.cse7 (select .cse4 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#old_byte_from_buf~0#1.base|))) (let ((.cse3 (mod (select .cse7 .cse8) 256)) (.cse1 (mod (select .cse7 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#old_byte_from_buf~0#1.offset|) 18446744073709551616))) (and (or (< .cse1 9223372036854775808) (forall ((v_ArrVal_932 (Array Int Int)) (v_ArrVal_934 (Array Int Int))) (let ((.cse2 (select (select .cse4 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_932) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base|) .cse5)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_934) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base|) .cse5) (- 18446744073709551616) .cse1)))) (= .cse2 (+ (* (div .cse2 256) 256) .cse3))))) (or (forall ((v_ArrVal_932 (Array Int Int)) (v_ArrVal_934 (Array Int Int))) (let ((.cse6 (select (select .cse4 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_932) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base|) .cse5)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_934) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base|) .cse5) .cse1)))) (= (+ (* 256 (div .cse6 256)) .cse3) .cse6))) (< 9223372036854775807 .cse1))))))) (or (< .cse0 9223372036854775808) (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| (store .cse9 .cse10 (select .cse11 (+ .cse0 (- 18446744073709551616) |c_ULTIMATE.start_save_byte_from_array_~array#1.offset|)))))) (let ((.cse17 (select .cse15 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#old_byte_from_buf~0#1.base|))) (let ((.cse14 (mod (select .cse17 .cse8) 256)) (.cse12 (mod (select .cse17 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#old_byte_from_buf~0#1.offset|) 18446744073709551616))) (and (or (< .cse12 9223372036854775808) (forall ((v_ArrVal_932 (Array Int Int)) (v_ArrVal_934 (Array Int Int))) (let ((.cse13 (select (select .cse15 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_932) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base|) .cse5)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_934) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base|) .cse5) (- 18446744073709551616) .cse12)))) (= .cse13 (+ .cse14 (* (div .cse13 256) 256)))))) (or (forall ((v_ArrVal_932 (Array Int Int)) (v_ArrVal_934 (Array Int Int))) (let ((.cse16 (select (select .cse15 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_932) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base|) .cse5)) (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_934) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base|) .cse5) .cse12)))) (= (+ (* (div .cse16 256) 256) .cse14) .cse16))) (< 9223372036854775807 .cse12)))))))))) is different from false [2023-11-23 08:23:23,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131902218] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:23:23,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:23:23,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 23] total 48 [2023-11-23 08:23:23,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558596853] [2023-11-23 08:23:23,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:23:23,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-23 08:23:23,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:23:23,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-23 08:23:23,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=3232, Unknown=1, NotChecked=114, Total=3540 [2023-11-23 08:23:23,631 INFO L87 Difference]: Start difference. First operand 410 states and 601 transitions. Second operand has 48 states, 38 states have (on average 2.973684210526316) internal successors, (113), 39 states have internal predecessors, (113), 19 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (25), 15 states have call predecessors, (25), 16 states have call successors, (25) [2023-11-23 08:23:25,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:32,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:34,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:36,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:44,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:47,422 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:08,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:11,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:14,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:18,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:24:18,568 INFO L93 Difference]: Finished difference Result 717 states and 1007 transitions. [2023-11-23 08:24:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-23 08:24:18,569 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 38 states have (on average 2.973684210526316) internal successors, (113), 39 states have internal predecessors, (113), 19 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (25), 15 states have call predecessors, (25), 16 states have call successors, (25) Word has length 102 [2023-11-23 08:24:18,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:24:18,572 INFO L225 Difference]: With dead ends: 717 [2023-11-23 08:24:18,572 INFO L226 Difference]: Without dead ends: 715 [2023-11-23 08:24:18,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 139 SyntacticMatches, 16 SemanticMatches, 106 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2384 ImplicationChecksByTransitivity, 41.9s TimeCoverageRelationStatistics Valid=925, Invalid=10420, Unknown=1, NotChecked=210, Total=11556 [2023-11-23 08:24:18,576 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 1197 mSDsluCounter, 2348 mSDsCounter, 0 mSdLazyCounter, 9595 mSolverCounterSat, 818 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1229 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 10418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 818 IncrementalHoareTripleChecker+Valid, 9595 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:24:18,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1229 Valid, 2457 Invalid, 10418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [818 Valid, 9595 Invalid, 5 Unknown, 0 Unchecked, 48.3s Time] [2023-11-23 08:24:18,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-11-23 08:24:18,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 645. [2023-11-23 08:24:18,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 435 states have (on average 1.2344827586206897) internal successors, (537), 444 states have internal predecessors, (537), 161 states have call successors, (161), 41 states have call predecessors, (161), 48 states have return successors, (199), 159 states have call predecessors, (199), 158 states have call successors, (199) [2023-11-23 08:24:18,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 897 transitions. [2023-11-23 08:24:18,671 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 897 transitions. Word has length 102 [2023-11-23 08:24:18,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:24:18,673 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 897 transitions. [2023-11-23 08:24:18,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 38 states have (on average 2.973684210526316) internal successors, (113), 39 states have internal predecessors, (113), 19 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (25), 15 states have call predecessors, (25), 16 states have call successors, (25) [2023-11-23 08:24:18,673 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 897 transitions. [2023-11-23 08:24:18,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 08:24:18,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:24:18,675 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:24:18,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 08:24:18,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:24:18,891 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:24:18,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:24:18,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1002882705, now seen corresponding path program 1 times [2023-11-23 08:24:18,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:24:18,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775390770] [2023-11-23 08:24:18,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:18,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:24:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:24:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:24:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:24:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:19,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:24:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 08:24:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:24:19,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 08:24:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:24:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:24:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:24:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:24:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 08:24:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:19,215 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 08:24:19,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:24:19,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775390770] [2023-11-23 08:24:19,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775390770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:24:19,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:24:19,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:24:19,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102086522] [2023-11-23 08:24:19,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:24:19,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:24:19,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:24:19,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:24:19,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:24:19,218 INFO L87 Difference]: Start difference. First operand 645 states and 897 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:24:19,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:24:19,876 INFO L93 Difference]: Finished difference Result 800 states and 1085 transitions. [2023-11-23 08:24:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:24:19,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 111 [2023-11-23 08:24:19,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:24:19,879 INFO L225 Difference]: With dead ends: 800 [2023-11-23 08:24:19,879 INFO L226 Difference]: Without dead ends: 608 [2023-11-23 08:24:19,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:24:19,881 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 87 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:24:19,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 412 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:24:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-11-23 08:24:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 593. [2023-11-23 08:24:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 403 states have (on average 1.2258064516129032) internal successors, (494), 412 states have internal predecessors, (494), 141 states have call successors, (141), 41 states have call predecessors, (141), 48 states have return successors, (179), 139 states have call predecessors, (179), 138 states have call successors, (179) [2023-11-23 08:24:19,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 814 transitions. [2023-11-23 08:24:19,963 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 814 transitions. Word has length 111 [2023-11-23 08:24:19,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:24:19,963 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 814 transitions. [2023-11-23 08:24:19,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 08:24:19,963 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 814 transitions. [2023-11-23 08:24:19,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 08:24:19,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:24:19,965 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:24:19,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 08:24:19,965 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:24:19,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:24:19,966 INFO L85 PathProgramCache]: Analyzing trace with hash -341298664, now seen corresponding path program 1 times [2023-11-23 08:24:19,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:24:19,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482044327] [2023-11-23 08:24:19,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:19,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:24:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:24:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:24:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:20,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:24:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:24:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:24:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:24:20,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:24:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 08:24:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:24:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:24:20,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:24:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:24:20,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-23 08:24:20,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:24:20,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482044327] [2023-11-23 08:24:20,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482044327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:24:20,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:24:20,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:24:20,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280537439] [2023-11-23 08:24:20,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:24:20,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:24:20,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:24:20,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:24:20,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:24:20,283 INFO L87 Difference]: Start difference. First operand 593 states and 814 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:24:20,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:24:20,944 INFO L93 Difference]: Finished difference Result 906 states and 1225 transitions. [2023-11-23 08:24:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:24:20,944 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 108 [2023-11-23 08:24:20,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:24:20,947 INFO L225 Difference]: With dead ends: 906 [2023-11-23 08:24:20,947 INFO L226 Difference]: Without dead ends: 648 [2023-11-23 08:24:20,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:24:20,948 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 108 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:24:20,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 459 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:24:20,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2023-11-23 08:24:21,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 602. [2023-11-23 08:24:21,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 409 states have (on average 1.2224938875305624) internal successors, (500), 418 states have internal predecessors, (500), 144 states have call successors, (144), 41 states have call predecessors, (144), 48 states have return successors, (182), 142 states have call predecessors, (182), 141 states have call successors, (182) [2023-11-23 08:24:21,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 826 transitions. [2023-11-23 08:24:21,034 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 826 transitions. Word has length 108 [2023-11-23 08:24:21,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:24:21,034 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 826 transitions. [2023-11-23 08:24:21,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 4 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:24:21,039 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 826 transitions. [2023-11-23 08:24:21,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 08:24:21,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:24:21,045 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:24:21,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 08:24:21,046 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:24:21,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:24:21,046 INFO L85 PathProgramCache]: Analyzing trace with hash -574414842, now seen corresponding path program 1 times [2023-11-23 08:24:21,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:24:21,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264235051] [2023-11-23 08:24:21,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:21,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:24:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:24:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:24:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:21,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:24:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:24:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:22,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:24:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:22,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:24:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:22,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:24:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:22,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:24:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:22,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:24:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:22,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:24:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:24:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 08:24:22,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:24:22,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264235051] [2023-11-23 08:24:22,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264235051] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:24:22,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421774518] [2023-11-23 08:24:22,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:22,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:24:22,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:24:22,223 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:24:22,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:24:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:23,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 08:24:23,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:24:23,897 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 08:24:23,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:24:24,091 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 [2023-11-23 08:24:24,145 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 08:24:24,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2023-11-23 08:24:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 8 proven. 13 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 08:24:24,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421774518] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:24:24,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:24:24,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 9] total 24 [2023-11-23 08:24:24,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410942374] [2023-11-23 08:24:24,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:24:24,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 08:24:24,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:24:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 08:24:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-11-23 08:24:24,159 INFO L87 Difference]: Start difference. First operand 602 states and 826 transitions. Second operand has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 5 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) [2023-11-23 08:24:26,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:28,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:30,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:33,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:35,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:37,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:40,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:42,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:45,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:47,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:49,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:51,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:53,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:54,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:24:54,304 INFO L93 Difference]: Finished difference Result 1212 states and 1646 transitions. [2023-11-23 08:24:54,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-23 08:24:54,305 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 5 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) Word has length 109 [2023-11-23 08:24:54,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:24:54,307 INFO L225 Difference]: With dead ends: 1212 [2023-11-23 08:24:54,307 INFO L226 Difference]: Without dead ends: 665 [2023-11-23 08:24:54,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 216 SyntacticMatches, 16 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=301, Invalid=1259, Unknown=0, NotChecked=0, Total=1560 [2023-11-23 08:24:54,310 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 435 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 3574 mSolverCounterSat, 154 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 3741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 3574 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:24:54,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 1460 Invalid, 3741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 3574 Invalid, 13 Unknown, 0 Unchecked, 29.6s Time] [2023-11-23 08:24:54,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2023-11-23 08:24:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 643. [2023-11-23 08:24:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 440 states have (on average 1.1954545454545455) internal successors, (526), 449 states have internal predecessors, (526), 146 states have call successors, (146), 49 states have call predecessors, (146), 56 states have return successors, (182), 144 states have call predecessors, (182), 142 states have call successors, (182) [2023-11-23 08:24:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 854 transitions. [2023-11-23 08:24:54,400 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 854 transitions. Word has length 109 [2023-11-23 08:24:54,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:24:54,400 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 854 transitions. [2023-11-23 08:24:54,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.541666666666667) internal successors, (133), 23 states have internal predecessors, (133), 5 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 5 states have call predecessors, (33), 4 states have call successors, (33) [2023-11-23 08:24:54,401 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 854 transitions. [2023-11-23 08:24:54,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 08:24:54,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:24:54,403 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2023-11-23 08:24:54,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:24:54,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:24:54,616 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:24:54,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:24:54,617 INFO L85 PathProgramCache]: Analyzing trace with hash 987302272, now seen corresponding path program 1 times [2023-11-23 08:24:54,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:24:54,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118377097] [2023-11-23 08:24:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:54,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:24:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:24:55,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:24:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:55,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:24:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:24:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:24:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:24:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:24:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:24:55,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:24:55,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:24:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:24:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 08:24:55,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:24:55,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118377097] [2023-11-23 08:24:55,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118377097] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:24:55,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:24:55,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 08:24:55,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614635449] [2023-11-23 08:24:55,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:24:55,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:24:55,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:24:55,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:24:55,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:24:55,814 INFO L87 Difference]: Start difference. First operand 643 states and 854 transitions. Second operand has 13 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 08:24:57,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:24:57,193 INFO L93 Difference]: Finished difference Result 667 states and 889 transitions. [2023-11-23 08:24:57,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:24:57,194 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 109 [2023-11-23 08:24:57,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:24:57,196 INFO L225 Difference]: With dead ends: 667 [2023-11-23 08:24:57,196 INFO L226 Difference]: Without dead ends: 656 [2023-11-23 08:24:57,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:24:57,197 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 143 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:24:57,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 954 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 08:24:57,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-11-23 08:24:57,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 639. [2023-11-23 08:24:57,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 437 states have (on average 1.194508009153318) internal successors, (522), 445 states have internal predecessors, (522), 146 states have call successors, (146), 49 states have call predecessors, (146), 55 states have return successors, (181), 144 states have call predecessors, (181), 142 states have call successors, (181) [2023-11-23 08:24:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 849 transitions. [2023-11-23 08:24:57,285 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 849 transitions. Word has length 109 [2023-11-23 08:24:57,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:24:57,285 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 849 transitions. [2023-11-23 08:24:57,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 11 states have internal predecessors, (63), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 08:24:57,286 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 849 transitions. [2023-11-23 08:24:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 08:24:57,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:24:57,287 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 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] [2023-11-23 08:24:57,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 08:24:57,287 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:24:57,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:24:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1688710449, now seen corresponding path program 1 times [2023-11-23 08:24:57,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:24:57,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487260892] [2023-11-23 08:24:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:57,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:24:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:24:57,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:24:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:24:57,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:24:57,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:24:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:24:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:24:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:24:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:24:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:24:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:24:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:24:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-23 08:24:57,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:24:57,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487260892] [2023-11-23 08:24:57,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487260892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:24:57,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:24:57,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 08:24:57,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730656291] [2023-11-23 08:24:57,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:24:57,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:24:57,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:24:57,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:24:57,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:24:57,729 INFO L87 Difference]: Start difference. First operand 639 states and 849 transitions. Second operand has 9 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 08:24:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:24:58,539 INFO L93 Difference]: Finished difference Result 674 states and 899 transitions. [2023-11-23 08:24:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:24:58,539 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 111 [2023-11-23 08:24:58,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:24:58,542 INFO L225 Difference]: With dead ends: 674 [2023-11-23 08:24:58,542 INFO L226 Difference]: Without dead ends: 654 [2023-11-23 08:24:58,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:24:58,545 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 101 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 790 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:24:58,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 790 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:24:58,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2023-11-23 08:24:58,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 642. [2023-11-23 08:24:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 440 states have (on average 1.1931818181818181) internal successors, (525), 448 states have internal predecessors, (525), 146 states have call successors, (146), 49 states have call predecessors, (146), 55 states have return successors, (181), 144 states have call predecessors, (181), 142 states have call successors, (181) [2023-11-23 08:24:58,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 852 transitions. [2023-11-23 08:24:58,641 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 852 transitions. Word has length 111 [2023-11-23 08:24:58,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:24:58,641 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 852 transitions. [2023-11-23 08:24:58,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 08:24:58,642 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 852 transitions. [2023-11-23 08:24:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 08:24:58,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:24:58,644 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2023-11-23 08:24:58,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-23 08:24:58,644 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:24:58,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:24:58,644 INFO L85 PathProgramCache]: Analyzing trace with hash 813891451, now seen corresponding path program 1 times [2023-11-23 08:24:58,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:24:58,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125980395] [2023-11-23 08:24:58,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:24:58,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:24:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:24:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:24:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:24:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:24:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:24:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:24:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:24:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:24:59,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:24:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:24:59,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:24:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:24:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:24:59,187 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-23 08:24:59,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:24:59,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125980395] [2023-11-23 08:24:59,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125980395] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:24:59,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:24:59,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 08:24:59,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456346974] [2023-11-23 08:24:59,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:24:59,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:24:59,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:24:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:24:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:24:59,201 INFO L87 Difference]: Start difference. First operand 642 states and 852 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, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 08:25:00,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:25:00,242 INFO L93 Difference]: Finished difference Result 673 states and 895 transitions. [2023-11-23 08:25:00,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:25:00,242 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, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 111 [2023-11-23 08:25:00,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:25:00,246 INFO L225 Difference]: With dead ends: 673 [2023-11-23 08:25:00,249 INFO L226 Difference]: Without dead ends: 663 [2023-11-23 08:25:00,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:25:00,277 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 115 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 1171 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:25:00,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 994 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1171 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:25:00,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2023-11-23 08:25:00,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 648. [2023-11-23 08:25:00,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 446 states have (on average 1.1905829596412556) internal successors, (531), 454 states have internal predecessors, (531), 146 states have call successors, (146), 49 states have call predecessors, (146), 55 states have return successors, (173), 144 states have call predecessors, (173), 142 states have call successors, (173) [2023-11-23 08:25:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 850 transitions. [2023-11-23 08:25:00,366 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 850 transitions. Word has length 111 [2023-11-23 08:25:00,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:25:00,366 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 850 transitions. [2023-11-23 08:25:00,366 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, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 08:25:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 850 transitions. [2023-11-23 08:25:00,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 08:25:00,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:25:00,367 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2023-11-23 08:25:00,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-23 08:25:00,368 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:25:00,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:25:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash 420864441, now seen corresponding path program 1 times [2023-11-23 08:25:00,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:25:00,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906832040] [2023-11-23 08:25:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:25:00,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:25:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:25:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:25:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:25:01,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:25:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 08:25:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 08:25:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:25:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:25:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:25:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:25:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 08:25:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 08:25:01,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:25:01,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906832040] [2023-11-23 08:25:01,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906832040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:25:01,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:25:01,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 08:25:01,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987424134] [2023-11-23 08:25:01,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:25:01,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:25:01,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:25:01,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:25:01,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:25:01,512 INFO L87 Difference]: Start difference. First operand 648 states and 850 transitions. Second operand has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 08:25:03,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:25:03,048 INFO L93 Difference]: Finished difference Result 669 states and 875 transitions. [2023-11-23 08:25:03,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:25:03,049 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 111 [2023-11-23 08:25:03,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:25:03,051 INFO L225 Difference]: With dead ends: 669 [2023-11-23 08:25:03,051 INFO L226 Difference]: Without dead ends: 576 [2023-11-23 08:25:03,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:25:03,052 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 128 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:25:03,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1061 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 08:25:03,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-11-23 08:25:03,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 543. [2023-11-23 08:25:03,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 370 states have (on average 1.1972972972972973) internal successors, (443), 377 states have internal predecessors, (443), 122 states have call successors, (122), 44 states have call predecessors, (122), 50 states have return successors, (138), 121 states have call predecessors, (138), 118 states have call successors, (138) [2023-11-23 08:25:03,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 703 transitions. [2023-11-23 08:25:03,122 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 703 transitions. Word has length 111 [2023-11-23 08:25:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:25:03,122 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 703 transitions. [2023-11-23 08:25:03,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.909090909090909) internal successors, (65), 10 states have internal predecessors, (65), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 08:25:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 703 transitions. [2023-11-23 08:25:03,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 08:25:03,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:25:03,124 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:25:03,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-23 08:25:03,124 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:25:03,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:25:03,124 INFO L85 PathProgramCache]: Analyzing trace with hash -717145143, now seen corresponding path program 1 times [2023-11-23 08:25:03,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:25:03,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740576644] [2023-11-23 08:25:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:25:03,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:25:03,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:25:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:25:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:25:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:25:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:25:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:25:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:25:04,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:25:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:25:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:25:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:25:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 08:25:04,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:04,359 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-23 08:25:04,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:25:04,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740576644] [2023-11-23 08:25:04,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740576644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:25:04,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:25:04,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-23 08:25:04,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522194279] [2023-11-23 08:25:04,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:25:04,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 08:25:04,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:25:04,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 08:25:04,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:25:04,361 INFO L87 Difference]: Start difference. First operand 543 states and 703 transitions. Second operand has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 13 states have internal predecessors, (55), 10 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-23 08:25:05,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:25:05,596 INFO L93 Difference]: Finished difference Result 592 states and 759 transitions. [2023-11-23 08:25:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:25:05,596 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 13 states have internal predecessors, (55), 10 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) Word has length 115 [2023-11-23 08:25:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:25:05,598 INFO L225 Difference]: With dead ends: 592 [2023-11-23 08:25:05,599 INFO L226 Difference]: Without dead ends: 548 [2023-11-23 08:25:05,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:25:05,599 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 233 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:25:05,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 532 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 08:25:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-11-23 08:25:05,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 543. [2023-11-23 08:25:05,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 370 states have (on average 1.1945945945945946) internal successors, (442), 377 states have internal predecessors, (442), 122 states have call successors, (122), 44 states have call predecessors, (122), 50 states have return successors, (138), 121 states have call predecessors, (138), 118 states have call successors, (138) [2023-11-23 08:25:05,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 702 transitions. [2023-11-23 08:25:05,669 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 702 transitions. Word has length 115 [2023-11-23 08:25:05,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:25:05,670 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 702 transitions. [2023-11-23 08:25:05,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 4.583333333333333) internal successors, (55), 13 states have internal predecessors, (55), 10 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 9 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-23 08:25:05,670 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 702 transitions. [2023-11-23 08:25:05,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 08:25:05,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:25:05,671 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:25:05,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-11-23 08:25:05,671 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:25:05,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:25:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1984105776, now seen corresponding path program 1 times [2023-11-23 08:25:05,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:25:05,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847093640] [2023-11-23 08:25:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:25:05,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:25:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:25:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:25:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:25:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:25:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:25:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:25:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:25:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:25:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:25:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:25:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:25:06,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:25:06,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 08:25:06,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-23 08:25:06,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:25:06,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847093640] [2023-11-23 08:25:06,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847093640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:25:06,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:25:06,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 08:25:06,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217968336] [2023-11-23 08:25:06,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:25:06,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:25:06,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:25:06,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:25:06,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:25:06,504 INFO L87 Difference]: Start difference. First operand 543 states and 702 transitions. Second operand has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:25:07,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:25:07,976 INFO L93 Difference]: Finished difference Result 609 states and 791 transitions. [2023-11-23 08:25:07,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:25:07,977 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 121 [2023-11-23 08:25:07,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:25:07,979 INFO L225 Difference]: With dead ends: 609 [2023-11-23 08:25:07,979 INFO L226 Difference]: Without dead ends: 592 [2023-11-23 08:25:07,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:25:07,980 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 125 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:25:07,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 871 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 08:25:07,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2023-11-23 08:25:08,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 576. [2023-11-23 08:25:08,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 397 states have (on average 1.1889168765743072) internal successors, (472), 410 states have internal predecessors, (472), 125 states have call successors, (125), 44 states have call predecessors, (125), 53 states have return successors, (154), 121 states have call predecessors, (154), 121 states have call successors, (154) [2023-11-23 08:25:08,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 751 transitions. [2023-11-23 08:25:08,145 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 751 transitions. Word has length 121 [2023-11-23 08:25:08,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:25:08,146 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 751 transitions. [2023-11-23 08:25:08,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.181818181818182) internal successors, (68), 11 states have internal predecessors, (68), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 08:25:08,154 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 751 transitions. [2023-11-23 08:25:08,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 08:25:08,155 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:25:08,155 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 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] [2023-11-23 08:25:08,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-23 08:25:08,156 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:25:08,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:25:08,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1299744270, now seen corresponding path program 1 times [2023-11-23 08:25:08,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:25:08,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481723736] [2023-11-23 08:25:08,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:25:08,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:25:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:25:09,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:25:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:25:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:25:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:25:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:25:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:25:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:25:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:25:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:25:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:25:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:25:09,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 08:25:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-23 08:25:09,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:25:09,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481723736] [2023-11-23 08:25:09,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481723736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:25:09,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:25:09,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-23 08:25:09,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165282901] [2023-11-23 08:25:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:25:09,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 08:25:09,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:25:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 08:25:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:25:09,725 INFO L87 Difference]: Start difference. First operand 576 states and 751 transitions. Second operand has 15 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2023-11-23 08:25:11,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:25:11,219 INFO L93 Difference]: Finished difference Result 643 states and 825 transitions. [2023-11-23 08:25:11,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:25:11,219 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) Word has length 121 [2023-11-23 08:25:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:25:11,222 INFO L225 Difference]: With dead ends: 643 [2023-11-23 08:25:11,222 INFO L226 Difference]: Without dead ends: 587 [2023-11-23 08:25:11,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:25:11,223 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 127 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 1736 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:25:11,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 843 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1736 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 08:25:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2023-11-23 08:25:11,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 576. [2023-11-23 08:25:11,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 397 states have (on average 1.18639798488665) internal successors, (471), 410 states have internal predecessors, (471), 125 states have call successors, (125), 44 states have call predecessors, (125), 53 states have return successors, (154), 121 states have call predecessors, (154), 121 states have call successors, (154) [2023-11-23 08:25:11,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 750 transitions. [2023-11-23 08:25:11,296 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 750 transitions. Word has length 121 [2023-11-23 08:25:11,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:25:11,296 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 750 transitions. [2023-11-23 08:25:11,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 9 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2023-11-23 08:25:11,297 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 750 transitions. [2023-11-23 08:25:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-23 08:25:11,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:25:11,298 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:25:11,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-11-23 08:25:11,298 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:25:11,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:25:11,299 INFO L85 PathProgramCache]: Analyzing trace with hash -697153852, now seen corresponding path program 1 times [2023-11-23 08:25:11,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:25:11,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233392029] [2023-11-23 08:25:11,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:25:11,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:25:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:25:13,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 08:25:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:25:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:25:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 08:25:13,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 08:25:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:25:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:25:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:25:13,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:25:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:25:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:25:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:25:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:25:13,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:13,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 08:25:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 08:25:14,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:25:14,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233392029] [2023-11-23 08:25:14,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233392029] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:25:14,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916200362] [2023-11-23 08:25:14,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:25:14,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:25:14,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:25:14,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:25:14,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:25:14,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:25:14,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 2778 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-23 08:25:14,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:25:14,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:25:14,900 WARN L876 $PredicateComparison]: unable to prove that (exists ((|bounded_malloc_#res.base| Int)) (and (<= (+ |bounded_malloc_#res.base| 1) |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |bounded_malloc_#res.base| (select |c_#valid| |bounded_malloc_#res.base|))))) is different from true [2023-11-23 08:25:14,916 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:25:14,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2023-11-23 08:25:14,958 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 [2023-11-23 08:25:17,368 INFO L349 Elim1Store]: treesize reduction 9, result has 64.0 percent of original size [2023-11-23 08:25:17,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 33 treesize of output 42 [2023-11-23 08:25:17,419 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 19 treesize of output 14 [2023-11-23 08:25:19,567 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 19 treesize of output 14 [2023-11-23 08:25:36,874 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 30 proven. 24 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 08:25:36,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:25:37,135 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1510 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_1510) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_string_harness_~#buf~3#1.offset| 16)) 18446744073709551616) 0))) is different from false [2023-11-23 08:25:37,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916200362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:25:37,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:25:37,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 42 [2023-11-23 08:25:37,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083166698] [2023-11-23 08:25:37,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:25:37,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-23 08:25:37,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:25:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-23 08:25:37,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1795, Unknown=4, NotChecked=174, Total=2162 [2023-11-23 08:25:37,142 INFO L87 Difference]: Start difference. First operand 576 states and 750 transitions. Second operand has 42 states, 36 states have (on average 3.8055555555555554) internal successors, (137), 36 states have internal predecessors, (137), 17 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (31), 16 states have call predecessors, (31), 16 states have call successors, (31) [2023-11-23 08:25:42,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:44,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:46,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:48,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:50,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:52,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:54,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:25:56,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Killed by 15