./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be16_harness.i --full-output --preprocessor.use.memory.slicer true --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_be16_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 e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:57:00,992 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:57:01,071 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:57:01,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:57:01,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:57:01,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:57:01,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:57:01,108 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:57:01,109 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:57:01,111 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:57:01,112 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:57:01,112 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:57:01,113 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:57:01,114 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:57:01,114 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:57:01,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:57:01,114 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:57:01,114 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:57:01,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:57:01,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:57:01,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:57:01,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:57:01,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:57:01,117 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:57:01,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:57:01,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:57:01,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:57:01,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:57:01,118 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:57:01,118 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:57:01,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:57:01,119 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:57:01,120 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:57:01,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:57:01,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:57:01,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:57:01,120 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:57:01,121 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:57:01,121 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:57:01,121 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e59944759baac4a78b3b5460ff6f3a8abaec03123fb9537d86aeca785269fb41 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:57:01,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:57:01,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:57:01,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:57:01,378 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:57:01,378 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:57:01,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be16_harness.i [2023-11-23 06:57:02,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:57:02,828 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:57:02,829 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be16_harness.i [2023-11-23 06:57:02,860 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e812b452/5542bd5bad7d4b6d80dbda5c0aea73d2/FLAG734ae19a1 [2023-11-23 06:57:02,875 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e812b452/5542bd5bad7d4b6d80dbda5c0aea73d2 [2023-11-23 06:57:02,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:57:02,879 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:57:02,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:57:02,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:57:02,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:57:02,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:57:02" (1/1) ... [2023-11-23 06:57:02,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423c0fd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:02, skipping insertion in model container [2023-11-23 06:57:02,893 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:57:02" (1/1) ... [2023-11-23 06:57:02,962 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:57:03,163 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_be16_harness.i[4497,4510] [2023-11-23 06:57:03,171 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_be16_harness.i[4557,4570] [2023-11-23 06:57:03,852 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:03,853 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:03,854 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:03,854 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:03,855 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:03,871 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:03,873 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:03,876 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:03,877 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,102 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:57:04,103 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:57:04,104 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:57:04,106 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:57:04,109 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:57:04,110 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:57:04,110 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:57:04,111 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:57:04,112 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:57:04,112 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:57:04,288 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,289 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:57:04,399 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:57:04,415 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_be16_harness.i[4497,4510] [2023-11-23 06:57:04,416 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_be16_harness.i[4557,4570] [2023-11-23 06:57:04,455 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,456 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,456 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,457 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,458 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,466 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,469 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,470 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,471 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,494 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:57:04,494 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:57:04,495 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:57:04,495 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:57:04,496 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:57:04,496 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:57:04,496 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:57:04,497 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:57:04,497 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:57:04,501 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:57:04,575 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-23 06:57:04,576 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,577 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:57:04,584 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-23 06:57:04,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:57:04,722 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,722 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,722 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,722 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,723 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,723 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,723 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,723 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,723 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,723 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,723 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,723 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,723 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,724 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,724 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,724 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,724 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,724 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:57:04,729 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:57:04,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04 WrapperNode [2023-11-23 06:57:04,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:57:04,731 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:57:04,731 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:57:04,731 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:57:04,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (1/1) ... [2023-11-23 06:57:04,822 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (1/1) ... [2023-11-23 06:57:04,893 INFO L138 Inliner]: procedures = 690, calls = 2622, calls flagged for inlining = 62, calls inlined = 10, statements flattened = 865 [2023-11-23 06:57:04,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:57:04,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:57:04,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:57:04,894 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:57:04,902 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (1/1) ... [2023-11-23 06:57:04,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (1/1) ... [2023-11-23 06:57:04,912 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (1/1) ... [2023-11-23 06:57:04,968 INFO L188 MemorySlicer]: Split 558 memory accesses to 8 slices as follows [2, 256, 6, 236, 8, 43, 4, 3]. 46 percent of accesses are in the largest equivalence class. The 506 initializations are split as follows [2, 256, 0, 236, 5, 4, 0, 3]. The 8 writes are split as follows [0, 0, 2, 0, 1, 3, 2, 0]. [2023-11-23 06:57:04,968 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (1/1) ... [2023-11-23 06:57:04,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (1/1) ... [2023-11-23 06:57:05,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (1/1) ... [2023-11-23 06:57:05,014 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (1/1) ... [2023-11-23 06:57:05,033 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (1/1) ... [2023-11-23 06:57:05,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (1/1) ... [2023-11-23 06:57:05,045 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:57:05,052 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:57:05,053 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:57:05,053 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:57:05,054 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (1/1) ... [2023-11-23 06:57:05,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:57:05,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:05,079 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 06:57:05,086 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 06:57:05,123 INFO L130 BoogieDeclarations]: Found specification of procedure htons [2023-11-23 06:57:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 06:57:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 06:57:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:57:05,124 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:57:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:57:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:57:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:57:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:57:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:57:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:57:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:57:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 06:57:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 06:57:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:57:05,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:57:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:57:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:57:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:57:05,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:57:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:57:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:57:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:57:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:57:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 06:57:05,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 06:57:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 06:57:05,128 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 06:57:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:57:05,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:57:05,128 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:57:05,129 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:57:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 06:57:05,129 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 06:57:05,129 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:57:05,129 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:57:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 06:57:05,130 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 06:57:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:57:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:57:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:57:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:57:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:57:05,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:57:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:57:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 06:57:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 06:57:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-23 06:57:05,131 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-23 06:57:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:57:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:57:05,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:57:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:57:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:57:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:57:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 06:57:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 06:57:05,132 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:57:05,132 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:57:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:57:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:57:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:57:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:57:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:57:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:57:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 06:57:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 06:57:05,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:57:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:57:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:57:05,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:57:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:57:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:57:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 06:57:05,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 06:57:05,432 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:57:05,434 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:57:06,033 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:57:06,210 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:57:06,210 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 06:57:06,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:57:06 BoogieIcfgContainer [2023-11-23 06:57:06,211 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:57:06,212 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:57:06,212 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:57:06,215 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:57:06,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:57:02" (1/3) ... [2023-11-23 06:57:06,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2ba39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:57:06, skipping insertion in model container [2023-11-23 06:57:06,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:57:04" (2/3) ... [2023-11-23 06:57:06,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a2ba39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:57:06, skipping insertion in model container [2023-11-23 06:57:06,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:57:06" (3/3) ... [2023-11-23 06:57:06,221 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be16_harness.i [2023-11-23 06:57:06,235 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:57:06,235 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:57:06,277 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:57:06,286 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;@27b6847c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:57:06,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:57:06,293 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 06:57:06,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 06:57:06,303 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:06,304 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:06,304 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:06,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:06,309 INFO L85 PathProgramCache]: Analyzing trace with hash -859465776, now seen corresponding path program 1 times [2023-11-23 06:57:06,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:06,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451333574] [2023-11-23 06:57:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:06,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:57:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 06:57:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 06:57:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:57:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 06:57:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:57:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 06:57:06,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 06:57:06,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:06,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451333574] [2023-11-23 06:57:06,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451333574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:06,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:57:06,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 06:57:06,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539486351] [2023-11-23 06:57:06,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:06,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 06:57:06,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:06,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 06:57:06,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 06:57:06,962 INFO L87 Difference]: Start difference. First operand has 116 states, 70 states have (on average 1.2857142857142858) internal successors, (90), 71 states have internal predecessors, (90), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:57:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:07,361 INFO L93 Difference]: Finished difference Result 230 states and 339 transitions. [2023-11-23 06:57:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:57:07,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 76 [2023-11-23 06:57:07,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:07,370 INFO L225 Difference]: With dead ends: 230 [2023-11-23 06:57:07,370 INFO L226 Difference]: Without dead ends: 114 [2023-11-23 06:57:07,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 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 06:57:07,382 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 69 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:07,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 89 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:57:07,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-23 06:57:07,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-23 06:57:07,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 70 states have internal predecessors, (86), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 06:57:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 153 transitions. [2023-11-23 06:57:07,433 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 153 transitions. Word has length 76 [2023-11-23 06:57:07,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:07,434 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 153 transitions. [2023-11-23 06:57:07,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:57:07,435 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 153 transitions. [2023-11-23 06:57:07,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 06:57:07,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:07,442 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:07,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:57:07,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:07,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:07,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1727950636, now seen corresponding path program 1 times [2023-11-23 06:57:07,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:07,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050905899] [2023-11-23 06:57:07,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:07,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:07,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:57:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 06:57:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 06:57:07,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:57:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:08,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 06:57:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:08,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:57:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 06:57:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:08,018 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 06:57:08,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050905899] [2023-11-23 06:57:08,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050905899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:08,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577849840] [2023-11-23 06:57:08,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:08,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:08,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:08,020 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 06:57:08,024 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 06:57:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:08,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 2640 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:57:08,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:57:08,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:57:08,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577849840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:08,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:57:08,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-23 06:57:08,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543628741] [2023-11-23 06:57:08,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:08,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:57:08,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:57:08,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:57:08,610 INFO L87 Difference]: Start difference. First operand 114 states and 153 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 06:57:08,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:08,783 INFO L93 Difference]: Finished difference Result 211 states and 290 transitions. [2023-11-23 06:57:08,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:57:08,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 76 [2023-11-23 06:57:08,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:08,789 INFO L225 Difference]: With dead ends: 211 [2023-11-23 06:57:08,789 INFO L226 Difference]: Without dead ends: 116 [2023-11-23 06:57:08,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:57:08,791 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 42 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:08,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 445 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:57:08,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-23 06:57:08,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-11-23 06:57:08,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2023-11-23 06:57:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 158 transitions. [2023-11-23 06:57:08,809 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 158 transitions. Word has length 76 [2023-11-23 06:57:08,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:08,809 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 158 transitions. [2023-11-23 06:57:08,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 06:57:08,810 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 158 transitions. [2023-11-23 06:57:08,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 06:57:08,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:08,812 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:08,831 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 06:57:09,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:09,028 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:09,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:09,029 INFO L85 PathProgramCache]: Analyzing trace with hash -549852353, now seen corresponding path program 1 times [2023-11-23 06:57:09,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:09,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492486942] [2023-11-23 06:57:09,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:09,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:09,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:57:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:57:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:57:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:57:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:57:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:57:09,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 06:57:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:09,612 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 06:57:09,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:09,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492486942] [2023-11-23 06:57:09,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492486942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:09,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83412399] [2023-11-23 06:57:09,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:09,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:09,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:09,614 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 06:57:09,632 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 06:57:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 2657 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:57:10,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 06:57:10,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:57:10,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83412399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:10,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:57:10,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-23 06:57:10,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248732453] [2023-11-23 06:57:10,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:10,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:57:10,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:10,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:57:10,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:57:10,174 INFO L87 Difference]: Start difference. First operand 116 states and 158 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 06:57:10,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:10,783 INFO L93 Difference]: Finished difference Result 206 states and 281 transitions. [2023-11-23 06:57:10,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:57:10,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82 [2023-11-23 06:57:10,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:10,784 INFO L225 Difference]: With dead ends: 206 [2023-11-23 06:57:10,784 INFO L226 Difference]: Without dead ends: 116 [2023-11-23 06:57:10,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:57:10,785 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 41 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:10,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 574 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:57:10,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-23 06:57:10,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2023-11-23 06:57:10,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 72 states have internal predecessors, (87), 34 states have call successors, (34), 10 states have call predecessors, (34), 11 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2023-11-23 06:57:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 157 transitions. [2023-11-23 06:57:10,792 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 157 transitions. Word has length 82 [2023-11-23 06:57:10,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:10,792 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 157 transitions. [2023-11-23 06:57:10,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 06:57:10,793 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 157 transitions. [2023-11-23 06:57:10,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 06:57:10,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:10,793 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 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] [2023-11-23 06:57:10,811 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 06:57:11,014 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,SelfDestructingSolverStorable2 [2023-11-23 06:57:11,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:11,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:11,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1139156468, now seen corresponding path program 2 times [2023-11-23 06:57:11,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:11,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156583464] [2023-11-23 06:57:11,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:11,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:57:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:57:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:57:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:57:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:57:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:57:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 06:57:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 06:57:11,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:11,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156583464] [2023-11-23 06:57:11,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156583464] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:11,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821311113] [2023-11-23 06:57:11,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:57:11,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:11,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:11,533 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 06:57:11,568 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 06:57:11,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:57:11,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:57:11,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 2674 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 06:57:11,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:12,071 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 06:57:12,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:57:12,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821311113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:12,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:57:12,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-23 06:57:12,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556382245] [2023-11-23 06:57:12,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:12,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:57:12,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:12,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:57:12,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:57:12,074 INFO L87 Difference]: Start difference. First operand 116 states and 157 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 06:57:12,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:12,556 INFO L93 Difference]: Finished difference Result 201 states and 272 transitions. [2023-11-23 06:57:12,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:57:12,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 88 [2023-11-23 06:57:12,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:12,558 INFO L225 Difference]: With dead ends: 201 [2023-11-23 06:57:12,558 INFO L226 Difference]: Without dead ends: 114 [2023-11-23 06:57:12,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:57:12,559 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 57 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:12,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 682 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:57:12,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-23 06:57:12,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-23 06:57:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 70 states have internal predecessors, (85), 34 states have call successors, (34), 10 states have call predecessors, (34), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 06:57:12,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 152 transitions. [2023-11-23 06:57:12,570 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 152 transitions. Word has length 88 [2023-11-23 06:57:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:12,570 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 152 transitions. [2023-11-23 06:57:12,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 5 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 06:57:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 152 transitions. [2023-11-23 06:57:12,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 06:57:12,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:12,574 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:12,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 06:57:12,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:12,791 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:12,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:12,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1200690388, now seen corresponding path program 1 times [2023-11-23 06:57:12,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:12,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466183012] [2023-11-23 06:57:12,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:12,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:13,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:13,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:57:13,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:57:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:57:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:57:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:57:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:57:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:57:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 06:57:13,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:13,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466183012] [2023-11-23 06:57:13,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466183012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:13,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:57:13,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:57:13,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248600750] [2023-11-23 06:57:13,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:13,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:57:13,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:13,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:57:13,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:57:13,493 INFO L87 Difference]: Start difference. First operand 114 states and 152 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 06:57:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:14,576 INFO L93 Difference]: Finished difference Result 125 states and 168 transitions. [2023-11-23 06:57:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:57:14,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100 [2023-11-23 06:57:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:14,578 INFO L225 Difference]: With dead ends: 125 [2023-11-23 06:57:14,578 INFO L226 Difference]: Without dead ends: 123 [2023-11-23 06:57:14,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:57:14,579 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 97 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:14,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 362 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 06:57:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-23 06:57:14,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2023-11-23 06:57:14,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 76 states have internal predecessors, (90), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2023-11-23 06:57:14,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 165 transitions. [2023-11-23 06:57:14,596 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 165 transitions. Word has length 100 [2023-11-23 06:57:14,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:14,596 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 165 transitions. [2023-11-23 06:57:14,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 06:57:14,597 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 165 transitions. [2023-11-23 06:57:14,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 06:57:14,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:14,597 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:14,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 06:57:14,598 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:14,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:14,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2016346804, now seen corresponding path program 1 times [2023-11-23 06:57:14,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:14,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837088037] [2023-11-23 06:57:14,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:14,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:15,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:57:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:57:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:57:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:57:15,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:57:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:57:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:57:15,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-23 06:57:15,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:15,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837088037] [2023-11-23 06:57:15,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837088037] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:15,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:57:15,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 06:57:15,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433257388] [2023-11-23 06:57:15,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:15,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:57:15,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:15,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:57:15,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:57:15,436 INFO L87 Difference]: Start difference. First operand 122 states and 165 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 06:57:16,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:16,200 INFO L93 Difference]: Finished difference Result 248 states and 353 transitions. [2023-11-23 06:57:16,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:57:16,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 104 [2023-11-23 06:57:16,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:16,201 INFO L225 Difference]: With dead ends: 248 [2023-11-23 06:57:16,201 INFO L226 Difference]: Without dead ends: 145 [2023-11-23 06:57:16,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 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 06:57:16,202 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 131 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:16,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 215 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 06:57:16,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-23 06:57:16,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2023-11-23 06:57:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 81 states have internal predecessors, (97), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (40), 34 states have call predecessors, (40), 34 states have call successors, (40) [2023-11-23 06:57:16,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 172 transitions. [2023-11-23 06:57:16,210 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 172 transitions. Word has length 104 [2023-11-23 06:57:16,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:16,210 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 172 transitions. [2023-11-23 06:57:16,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 06:57:16,210 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 172 transitions. [2023-11-23 06:57:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 06:57:16,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:16,211 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:16,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 06:57:16,212 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:16,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:16,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1315282226, now seen corresponding path program 1 times [2023-11-23 06:57:16,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:16,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587371321] [2023-11-23 06:57:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:16,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:17,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:57:17,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:57:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:57:17,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:57:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:57:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:57:17,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:57:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,357 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 06:57:17,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:17,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587371321] [2023-11-23 06:57:17,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587371321] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:17,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948075333] [2023-11-23 06:57:17,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:17,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:17,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:17,359 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 06:57:17,366 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 06:57:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:17,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 2715 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-23 06:57:17,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:17,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 06:57:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 06:57:18,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:57:18,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948075333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:18,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:57:18,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 22 [2023-11-23 06:57:18,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974787587] [2023-11-23 06:57:18,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:18,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 06:57:18,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:18,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 06:57:18,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-11-23 06:57:18,221 INFO L87 Difference]: Start difference. First operand 127 states and 172 transitions. Second operand has 13 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 06:57:21,434 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 06:57:23,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:25,488 WARN L539 Checker$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 06:57:27,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:29,957 WARN L539 Checker$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 06:57:30,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:30,093 INFO L93 Difference]: Finished difference Result 300 states and 403 transitions. [2023-11-23 06:57:30,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:57:30,094 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 104 [2023-11-23 06:57:30,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:30,095 INFO L225 Difference]: With dead ends: 300 [2023-11-23 06:57:30,095 INFO L226 Difference]: Without dead ends: 192 [2023-11-23 06:57:30,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 113 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2023-11-23 06:57:30,096 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 152 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 33 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:30,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 748 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 618 Invalid, 5 Unknown, 0 Unchecked, 11.8s Time] [2023-11-23 06:57:30,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-23 06:57:30,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 187. [2023-11-23 06:57:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 123 states have (on average 1.2520325203252032) internal successors, (154), 126 states have internal predecessors, (154), 46 states have call successors, (46), 15 states have call predecessors, (46), 17 states have return successors, (48), 45 states have call predecessors, (48), 44 states have call successors, (48) [2023-11-23 06:57:30,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 248 transitions. [2023-11-23 06:57:30,106 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 248 transitions. Word has length 104 [2023-11-23 06:57:30,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:30,107 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 248 transitions. [2023-11-23 06:57:30,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 6 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 06:57:30,108 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 248 transitions. [2023-11-23 06:57:30,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 06:57:30,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:30,109 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:30,126 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 06:57:30,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:30,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:30,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:30,321 INFO L85 PathProgramCache]: Analyzing trace with hash 612262798, now seen corresponding path program 2 times [2023-11-23 06:57:30,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:30,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389117541] [2023-11-23 06:57:30,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:30,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:30,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:30,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:30,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:30,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:30,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:57:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:31,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:57:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:31,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:57:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:31,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:57:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:31,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 06:57:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:57:31,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:31,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 06:57:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:31,082 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 06:57:31,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:31,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389117541] [2023-11-23 06:57:31,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389117541] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:31,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089208233] [2023-11-23 06:57:31,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:57:31,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:31,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:31,084 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 06:57:31,104 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 06:57:31,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:57:31,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:57:31,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-23 06:57:31,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:31,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:57:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 06:57:32,161 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:57:32,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089208233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:32,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:57:32,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [10] total 22 [2023-11-23 06:57:32,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115120478] [2023-11-23 06:57:32,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:32,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 06:57:32,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:32,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 06:57:32,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2023-11-23 06:57:32,162 INFO L87 Difference]: Start difference. First operand 187 states and 248 transitions. Second operand has 14 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 06:57:35,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:37,582 WARN L539 Checker$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 06:57:39,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:42,023 WARN L539 Checker$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 06:57:44,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:57:46,190 WARN L539 Checker$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 06:57:48,245 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 06:57:48,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:48,322 INFO L93 Difference]: Finished difference Result 336 states and 447 transitions. [2023-11-23 06:57:48,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 06:57:48,323 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 112 [2023-11-23 06:57:48,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:48,324 INFO L225 Difference]: With dead ends: 336 [2023-11-23 06:57:48,324 INFO L226 Difference]: Without dead ends: 184 [2023-11-23 06:57:48,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 115 SyntacticMatches, 8 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2023-11-23 06:57:48,326 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 125 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 21 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:48,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1476 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 814 Invalid, 7 Unknown, 0 Unchecked, 16.0s Time] [2023-11-23 06:57:48,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-23 06:57:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 182. [2023-11-23 06:57:48,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 120 states have (on average 1.2583333333333333) internal successors, (151), 123 states have internal predecessors, (151), 45 states have call successors, (45), 14 states have call predecessors, (45), 16 states have return successors, (45), 44 states have call predecessors, (45), 43 states have call successors, (45) [2023-11-23 06:57:48,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 241 transitions. [2023-11-23 06:57:48,340 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 241 transitions. Word has length 112 [2023-11-23 06:57:48,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:48,340 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 241 transitions. [2023-11-23 06:57:48,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 5.333333333333333) internal successors, (64), 12 states have internal predecessors, (64), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 06:57:48,341 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 241 transitions. [2023-11-23 06:57:48,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 06:57:48,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:48,342 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:48,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-23 06:57:48,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:48,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:48,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:48,551 INFO L85 PathProgramCache]: Analyzing trace with hash 84700628, now seen corresponding path program 1 times [2023-11-23 06:57:48,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:48,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121390319] [2023-11-23 06:57:48,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:48,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:49,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:49,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:57:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:57:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:57:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:57:49,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:57:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:57:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 06:57:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 06:57:49,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:49,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121390319] [2023-11-23 06:57:49,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121390319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:49,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332813526] [2023-11-23 06:57:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:49,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:49,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:49,230 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:57:49,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 06:57:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:49,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 2736 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:57:49,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:49,729 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 06:57:49,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:57:49,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332813526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:49,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:57:49,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2023-11-23 06:57:49,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443078275] [2023-11-23 06:57:49,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:49,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:57:49,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:49,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:57:49,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:57:49,731 INFO L87 Difference]: Start difference. First operand 182 states and 241 transitions. Second operand has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 06:57:50,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:50,366 INFO L93 Difference]: Finished difference Result 342 states and 458 transitions. [2023-11-23 06:57:50,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:57:50,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 116 [2023-11-23 06:57:50,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:50,367 INFO L225 Difference]: With dead ends: 342 [2023-11-23 06:57:50,368 INFO L226 Difference]: Without dead ends: 190 [2023-11-23 06:57:50,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:57:50,369 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 13 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:50,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 996 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:57:50,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-23 06:57:50,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 186. [2023-11-23 06:57:50,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 123 states have (on average 1.2520325203252032) internal successors, (154), 127 states have internal predecessors, (154), 45 states have call successors, (45), 14 states have call predecessors, (45), 17 states have return successors, (49), 44 states have call predecessors, (49), 43 states have call successors, (49) [2023-11-23 06:57:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 248 transitions. [2023-11-23 06:57:50,391 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 248 transitions. Word has length 116 [2023-11-23 06:57:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:50,392 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 248 transitions. [2023-11-23 06:57:50,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 06:57:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 248 transitions. [2023-11-23 06:57:50,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 06:57:50,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:50,394 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:50,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 06:57:50,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:50,604 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:50,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:50,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1885486003, now seen corresponding path program 1 times [2023-11-23 06:57:50,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:50,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919178392] [2023-11-23 06:57:50,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:50,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:50,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:50,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:50,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:57:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:57:50,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:57:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:57:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:57:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:57:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:57:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:50,835 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-23 06:57:50,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:50,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919178392] [2023-11-23 06:57:50,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919178392] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:50,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127303531] [2023-11-23 06:57:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:50,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:50,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:50,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:57:50,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 06:57:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:51,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:57:51,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:51,275 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-23 06:57:51,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:57:51,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127303531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:51,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:57:51,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 06:57:51,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638703052] [2023-11-23 06:57:51,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:51,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:57:51,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:51,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:57:51,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:57:51,277 INFO L87 Difference]: Start difference. First operand 186 states and 248 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:57:51,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:51,675 INFO L93 Difference]: Finished difference Result 362 states and 493 transitions. [2023-11-23 06:57:51,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:57:51,676 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2023-11-23 06:57:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:51,677 INFO L225 Difference]: With dead ends: 362 [2023-11-23 06:57:51,677 INFO L226 Difference]: Without dead ends: 199 [2023-11-23 06:57:51,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:57:51,678 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 9 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:51,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 409 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:57:51,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-23 06:57:51,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 190. [2023-11-23 06:57:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 127 states have (on average 1.2440944881889764) internal successors, (158), 131 states have internal predecessors, (158), 45 states have call successors, (45), 14 states have call predecessors, (45), 17 states have return successors, (49), 44 states have call predecessors, (49), 43 states have call successors, (49) [2023-11-23 06:57:51,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 252 transitions. [2023-11-23 06:57:51,687 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 252 transitions. Word has length 118 [2023-11-23 06:57:51,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:51,687 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 252 transitions. [2023-11-23 06:57:51,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:57:51,687 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 252 transitions. [2023-11-23 06:57:51,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 06:57:51,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:51,689 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:51,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 06:57:51,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:51,896 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:51,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:51,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1709151625, now seen corresponding path program 1 times [2023-11-23 06:57:51,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:51,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909206162] [2023-11-23 06:57:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:51,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:57:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:57:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:57:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:57:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:57:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:57:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:57:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,153 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 11 proven. 22 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 06:57:52,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:52,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909206162] [2023-11-23 06:57:52,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909206162] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:52,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077379986] [2023-11-23 06:57:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:52,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:52,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:52,155 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:57:52,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 06:57:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:52,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:57:52,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-23 06:57:52,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:57:52,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077379986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:52,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:57:52,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 06:57:52,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172664981] [2023-11-23 06:57:52,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:52,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:57:52,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:52,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:57:52,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:57:52,631 INFO L87 Difference]: Start difference. First operand 190 states and 252 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:57:52,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:52,887 INFO L93 Difference]: Finished difference Result 387 states and 523 transitions. [2023-11-23 06:57:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:57:52,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2023-11-23 06:57:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:52,889 INFO L225 Difference]: With dead ends: 387 [2023-11-23 06:57:52,889 INFO L226 Difference]: Without dead ends: 220 [2023-11-23 06:57:52,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:57:52,890 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 28 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:52,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 423 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:57:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-23 06:57:52,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 190. [2023-11-23 06:57:52,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 127 states have (on average 1.2283464566929134) internal successors, (156), 131 states have internal predecessors, (156), 45 states have call successors, (45), 14 states have call predecessors, (45), 17 states have return successors, (49), 44 states have call predecessors, (49), 43 states have call successors, (49) [2023-11-23 06:57:52,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 250 transitions. [2023-11-23 06:57:52,905 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 250 transitions. Word has length 118 [2023-11-23 06:57:52,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:52,906 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 250 transitions. [2023-11-23 06:57:52,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:57:52,906 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 250 transitions. [2023-11-23 06:57:52,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 06:57:52,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:52,907 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:57:52,925 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 06:57:53,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 06:57:53,123 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:53,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:53,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1631875513, now seen corresponding path program 1 times [2023-11-23 06:57:53,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:53,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014802764] [2023-11-23 06:57:53,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:53,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:53,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:57:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:57:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:57:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:57:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:57:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:57:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:57:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 06:57:53,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:53,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014802764] [2023-11-23 06:57:53,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014802764] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:53,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448787107] [2023-11-23 06:57:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:53,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:53,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:53,756 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:57:53,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 06:57:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:54,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 06:57:54,231 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:54,570 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-23 06:57:54,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:57:54,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448787107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:54,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:57:54,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [10] total 21 [2023-11-23 06:57:54,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774831327] [2023-11-23 06:57:54,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:54,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 06:57:54,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:54,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 06:57:54,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2023-11-23 06:57:54,572 INFO L87 Difference]: Start difference. First operand 190 states and 250 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 6 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-23 06:57:56,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:56,677 INFO L93 Difference]: Finished difference Result 428 states and 555 transitions. [2023-11-23 06:57:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 06:57:56,678 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 6 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 118 [2023-11-23 06:57:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:56,679 INFO L225 Difference]: With dead ends: 428 [2023-11-23 06:57:56,679 INFO L226 Difference]: Without dead ends: 280 [2023-11-23 06:57:56,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2023-11-23 06:57:56,680 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 171 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:56,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 1218 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 06:57:56,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-11-23 06:57:56,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 261. [2023-11-23 06:57:56,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 180 states have (on average 1.2333333333333334) internal successors, (222), 186 states have internal predecessors, (222), 58 states have call successors, (58), 17 states have call predecessors, (58), 22 states have return successors, (63), 57 states have call predecessors, (63), 55 states have call successors, (63) [2023-11-23 06:57:56,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 343 transitions. [2023-11-23 06:57:56,692 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 343 transitions. Word has length 118 [2023-11-23 06:57:56,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:56,692 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 343 transitions. [2023-11-23 06:57:56,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 11 states have internal predecessors, (55), 6 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-23 06:57:56,693 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 343 transitions. [2023-11-23 06:57:56,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 06:57:56,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:56,694 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:57:56,712 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 06:57:56,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:56,909 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:56,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:56,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1651974533, now seen corresponding path program 2 times [2023-11-23 06:57:56,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:56,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618059942] [2023-11-23 06:57:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:56,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:56,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:57,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:57,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:57,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:57:57,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:57:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:57:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:57:57,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:57:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:57:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:57:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:57:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 06:57:57,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:57,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618059942] [2023-11-23 06:57:57,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618059942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:57,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711115907] [2023-11-23 06:57:57,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:57:57,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:57,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:57,494 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:57:57,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 06:57:57,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:57:57,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:57:57,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 2738 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-23 06:57:57,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 91 proven. 9 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 06:57:58,541 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:57:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 52 proven. 13 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 06:57:58,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711115907] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:57:58,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:57:58,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16, 11] total 32 [2023-11-23 06:57:58,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775372684] [2023-11-23 06:57:58,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:57:58,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-23 06:57:58,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:58,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-23 06:57:58,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2023-11-23 06:57:58,893 INFO L87 Difference]: Start difference. First operand 261 states and 343 transitions. Second operand has 32 states, 29 states have (on average 4.137931034482759) internal successors, (120), 29 states have internal predecessors, (120), 8 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (31), 7 states have call predecessors, (31), 8 states have call successors, (31) [2023-11-23 06:58:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:04,240 INFO L93 Difference]: Finished difference Result 888 states and 1157 transitions. [2023-11-23 06:58:04,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-23 06:58:04,241 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 4.137931034482759) internal successors, (120), 29 states have internal predecessors, (120), 8 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (31), 7 states have call predecessors, (31), 8 states have call successors, (31) Word has length 118 [2023-11-23 06:58:04,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:04,243 INFO L225 Difference]: With dead ends: 888 [2023-11-23 06:58:04,243 INFO L226 Difference]: Without dead ends: 643 [2023-11-23 06:58:04,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 243 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1789 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1139, Invalid=7051, Unknown=0, NotChecked=0, Total=8190 [2023-11-23 06:58:04,247 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 527 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 3573 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 3752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 3573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:04,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 690 Invalid, 3752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 3573 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 06:58:04,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-11-23 06:58:04,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 540. [2023-11-23 06:58:04,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 392 states have (on average 1.221938775510204) internal successors, (479), 405 states have internal predecessors, (479), 103 states have call successors, (103), 31 states have call predecessors, (103), 44 states have return successors, (116), 103 states have call predecessors, (116), 97 states have call successors, (116) [2023-11-23 06:58:04,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 698 transitions. [2023-11-23 06:58:04,282 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 698 transitions. Word has length 118 [2023-11-23 06:58:04,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:04,283 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 698 transitions. [2023-11-23 06:58:04,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 4.137931034482759) internal successors, (120), 29 states have internal predecessors, (120), 8 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (31), 7 states have call predecessors, (31), 8 states have call successors, (31) [2023-11-23 06:58:04,284 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 698 transitions. [2023-11-23 06:58:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 06:58:04,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:04,286 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:04,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 06:58:04,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 06:58:04,501 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:04,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:04,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1751216686, now seen corresponding path program 3 times [2023-11-23 06:58:04,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:04,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579858596] [2023-11-23 06:58:04,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:04,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:58:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:58:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:58:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:58:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:58:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 06:58:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:58:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 26 proven. 13 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 06:58:05,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579858596] [2023-11-23 06:58:05,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579858596] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:58:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493139345] [2023-11-23 06:58:05,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 06:58:05,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:58:05,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:58:05,429 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:58:05,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 06:58:05,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 06:58:05,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:58:05,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 2450 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:58:05,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:58:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 06:58:05,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:58:05,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493139345] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:05,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:58:05,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2023-11-23 06:58:05,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982749514] [2023-11-23 06:58:05,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:05,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:58:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:05,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:58:05,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2023-11-23 06:58:05,945 INFO L87 Difference]: Start difference. First operand 540 states and 698 transitions. Second operand has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 06:58:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:06,778 INFO L93 Difference]: Finished difference Result 952 states and 1224 transitions. [2023-11-23 06:58:06,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:58:06,779 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 120 [2023-11-23 06:58:06,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:06,781 INFO L225 Difference]: With dead ends: 952 [2023-11-23 06:58:06,781 INFO L226 Difference]: Without dead ends: 441 [2023-11-23 06:58:06,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2023-11-23 06:58:06,783 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 13 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:06,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 996 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:58:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-23 06:58:06,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 412. [2023-11-23 06:58:06,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 294 states have (on average 1.2210884353741496) internal successors, (359), 303 states have internal predecessors, (359), 83 states have call successors, (83), 24 states have call predecessors, (83), 34 states have return successors, (91), 84 states have call predecessors, (91), 77 states have call successors, (91) [2023-11-23 06:58:06,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 533 transitions. [2023-11-23 06:58:06,800 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 533 transitions. Word has length 120 [2023-11-23 06:58:06,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:06,800 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 533 transitions. [2023-11-23 06:58:06,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 06:58:06,800 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 533 transitions. [2023-11-23 06:58:06,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 06:58:06,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:06,801 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:06,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 06:58:07,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 06:58:07,017 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:07,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1321790559, now seen corresponding path program 1 times [2023-11-23 06:58:07,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:07,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441299748] [2023-11-23 06:58:07,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:07,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:07,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:09,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:09,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:09,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:09,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:09,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:09,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:09,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:58:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:09,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:58:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:58:09,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:09,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:58:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:09,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:58:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:09,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:58:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:09,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:58:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:10,198 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 74 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 06:58:10,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441299748] [2023-11-23 06:58:10,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441299748] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:58:10,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998081698] [2023-11-23 06:58:10,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:10,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:58:10,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:58:10,200 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:58:10,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 06:58:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:10,615 INFO L262 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-23 06:58:10,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:58:10,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 06:58:10,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 06:58:11,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-23 06:58:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 34 proven. 82 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-23 06:58:12,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:58:12,562 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 40 treesize of output 32 [2023-11-23 06:58:12,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 06:58:12,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2023-11-23 06:58:12,730 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 06:58:12,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998081698] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 06:58:12,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:58:12,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [24, 18] total 53 [2023-11-23 06:58:12,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535237252] [2023-11-23 06:58:12,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:12,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 06:58:12,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:12,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 06:58:12,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2563, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 06:58:12,732 INFO L87 Difference]: Start difference. First operand 412 states and 533 transitions. Second operand has 16 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 06:58:14,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:14,309 INFO L93 Difference]: Finished difference Result 647 states and 829 transitions. [2023-11-23 06:58:14,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 06:58:14,310 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) Word has length 122 [2023-11-23 06:58:14,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:14,312 INFO L225 Difference]: With dead ends: 647 [2023-11-23 06:58:14,312 INFO L226 Difference]: Without dead ends: 486 [2023-11-23 06:58:14,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 222 SyntacticMatches, 15 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1263 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=278, Invalid=3882, Unknown=0, NotChecked=0, Total=4160 [2023-11-23 06:58:14,314 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 221 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:14,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 947 Invalid, 985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 06:58:14,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-23 06:58:14,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 452. [2023-11-23 06:58:14,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 318 states have (on average 1.2106918238993711) internal successors, (385), 331 states have internal predecessors, (385), 94 states have call successors, (94), 25 states have call predecessors, (94), 39 states have return successors, (112), 95 states have call predecessors, (112), 88 states have call successors, (112) [2023-11-23 06:58:14,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 591 transitions. [2023-11-23 06:58:14,337 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 591 transitions. Word has length 122 [2023-11-23 06:58:14,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:14,337 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 591 transitions. [2023-11-23 06:58:14,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 14 states have internal predecessors, (51), 7 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 8 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 06:58:14,337 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 591 transitions. [2023-11-23 06:58:14,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 06:58:14,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:14,338 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:14,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 06:58:14,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 06:58:14,552 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:14,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:14,553 INFO L85 PathProgramCache]: Analyzing trace with hash -400342373, now seen corresponding path program 1 times [2023-11-23 06:58:14,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:14,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381945712] [2023-11-23 06:58:14,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:14,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:58:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:58:16,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:58:16,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:58:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:58:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:58:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:58:16,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 06:58:16,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:16,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381945712] [2023-11-23 06:58:16,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381945712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:16,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:58:16,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-23 06:58:16,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084639285] [2023-11-23 06:58:16,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:16,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 06:58:16,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:16,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 06:58:16,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:58:16,478 INFO L87 Difference]: Start difference. First operand 452 states and 591 transitions. Second operand has 16 states, 15 states have (on average 3.4) internal successors, (51), 13 states have internal predecessors, (51), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-23 06:58:18,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:18,479 INFO L93 Difference]: Finished difference Result 661 states and 845 transitions. [2023-11-23 06:58:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 06:58:18,488 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 13 states have internal predecessors, (51), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 122 [2023-11-23 06:58:18,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:18,490 INFO L225 Difference]: With dead ends: 661 [2023-11-23 06:58:18,490 INFO L226 Difference]: Without dead ends: 488 [2023-11-23 06:58:18,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2023-11-23 06:58:18,491 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 129 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 1642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:18,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 473 Invalid, 1642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 06:58:18,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-23 06:58:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 452. [2023-11-23 06:58:18,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 318 states have (on average 1.2106918238993711) internal successors, (385), 331 states have internal predecessors, (385), 94 states have call successors, (94), 25 states have call predecessors, (94), 39 states have return successors, (112), 95 states have call predecessors, (112), 88 states have call successors, (112) [2023-11-23 06:58:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 591 transitions. [2023-11-23 06:58:18,512 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 591 transitions. Word has length 122 [2023-11-23 06:58:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:18,513 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 591 transitions. [2023-11-23 06:58:18,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.4) internal successors, (51), 13 states have internal predecessors, (51), 6 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-23 06:58:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 591 transitions. [2023-11-23 06:58:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 06:58:18,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:18,514 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:18,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 06:58:18,515 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:18,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:18,515 INFO L85 PathProgramCache]: Analyzing trace with hash 300722205, now seen corresponding path program 1 times [2023-11-23 06:58:18,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:18,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714720510] [2023-11-23 06:58:18,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:18,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:18,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:18,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:18,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:58:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:18,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:58:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:58:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:58:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:58:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:58:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:19,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:58:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-23 06:58:19,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:19,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714720510] [2023-11-23 06:58:19,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714720510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:19,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:58:19,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 06:58:19,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274573965] [2023-11-23 06:58:19,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:19,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:58:19,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:19,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:58:19,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:58:19,064 INFO L87 Difference]: Start difference. First operand 452 states and 591 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 06:58:19,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:19,833 INFO L93 Difference]: Finished difference Result 731 states and 941 transitions. [2023-11-23 06:58:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:58:19,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2023-11-23 06:58:19,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:19,843 INFO L225 Difference]: With dead ends: 731 [2023-11-23 06:58:19,843 INFO L226 Difference]: Without dead ends: 464 [2023-11-23 06:58:19,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:58:19,844 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 80 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:19,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 216 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 06:58:19,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-11-23 06:58:19,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 444. [2023-11-23 06:58:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 311 states have (on average 1.1993569131832797) internal successors, (373), 323 states have internal predecessors, (373), 94 states have call successors, (94), 25 states have call predecessors, (94), 38 states have return successors, (109), 95 states have call predecessors, (109), 88 states have call successors, (109) [2023-11-23 06:58:19,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 576 transitions. [2023-11-23 06:58:19,865 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 576 transitions. Word has length 122 [2023-11-23 06:58:19,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:19,865 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 576 transitions. [2023-11-23 06:58:19,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 06:58:19,866 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 576 transitions. [2023-11-23 06:58:19,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 06:58:19,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:19,867 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:58:19,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 06:58:19,867 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:19,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:19,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1539357661, now seen corresponding path program 1 times [2023-11-23 06:58:19,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:19,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238726758] [2023-11-23 06:58:19,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:19,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:21,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:58:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:58:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:58:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:58:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:58:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:58:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:58:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 45 proven. 22 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 06:58:21,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:21,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238726758] [2023-11-23 06:58:21,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238726758] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:58:21,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634564824] [2023-11-23 06:58:21,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:21,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:58:21,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:58:21,548 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:58:21,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 06:58:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:22,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-23 06:58:22,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:58:22,219 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 06:58:22,649 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 18 treesize of output 10 [2023-11-23 06:58:22,659 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:58:22,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2023-11-23 06:58:22,689 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 06:58:22,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:58:22,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634564824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:22,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:58:22,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 27 [2023-11-23 06:58:22,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456322010] [2023-11-23 06:58:22,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:22,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 06:58:22,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:22,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 06:58:22,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2023-11-23 06:58:22,692 INFO L87 Difference]: Start difference. First operand 444 states and 576 transitions. Second operand has 15 states, 13 states have (on average 4.846153846153846) internal successors, (63), 11 states have internal predecessors, (63), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 06:58:25,639 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 06:58:28,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:30,073 WARN L539 Checker$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 06:58:32,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:34,140 WARN L539 Checker$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 06:58:36,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:38,164 WARN L539 Checker$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 06:58:40,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:42,383 WARN L539 Checker$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 06:58:44,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:46,685 WARN L539 Checker$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 06:58:49,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:51,109 WARN L539 Checker$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 06:58:53,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:55,197 WARN L539 Checker$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 06:58:57,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:58:59,573 WARN L539 Checker$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 06:59:01,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:03,599 WARN L539 Checker$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 06:59:03,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:03,688 INFO L93 Difference]: Finished difference Result 1131 states and 1460 transitions. [2023-11-23 06:59:03,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 06:59:03,693 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.846153846153846) internal successors, (63), 11 states have internal predecessors, (63), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) Word has length 122 [2023-11-23 06:59:03,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:03,702 INFO L225 Difference]: With dead ends: 1131 [2023-11-23 06:59:03,702 INFO L226 Difference]: Without dead ends: 743 [2023-11-23 06:59:03,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=1033, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 06:59:03,704 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 388 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 148 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:03,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [414 Valid, 752 Invalid, 1285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1118 Invalid, 19 Unknown, 0 Unchecked, 40.7s Time] [2023-11-23 06:59:03,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-11-23 06:59:03,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 700. [2023-11-23 06:59:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 494 states have (on average 1.1983805668016194) internal successors, (592), 515 states have internal predecessors, (592), 145 states have call successors, (145), 38 states have call predecessors, (145), 60 states have return successors, (177), 146 states have call predecessors, (177), 136 states have call successors, (177) [2023-11-23 06:59:03,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 914 transitions. [2023-11-23 06:59:03,740 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 914 transitions. Word has length 122 [2023-11-23 06:59:03,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:03,740 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 914 transitions. [2023-11-23 06:59:03,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.846153846153846) internal successors, (63), 11 states have internal predecessors, (63), 6 states have call successors, (14), 4 states have call predecessors, (14), 5 states have return successors, (12), 6 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-23 06:59:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 914 transitions. [2023-11-23 06:59:03,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 06:59:03,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:03,742 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:03,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 06:59:03,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 06:59:03,956 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:03,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:03,957 INFO L85 PathProgramCache]: Analyzing trace with hash -768624095, now seen corresponding path program 1 times [2023-11-23 06:59:03,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:03,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089239667] [2023-11-23 06:59:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:03,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:05,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:59:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:59:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:59:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:59:05,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:59:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:59:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:59:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:59:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:05,546 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 45 proven. 22 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 06:59:05,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:05,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089239667] [2023-11-23 06:59:05,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089239667] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:05,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19986801] [2023-11-23 06:59:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:05,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:05,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:05,547 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:59:05,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 06:59:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:06,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 87 conjunts are in the unsatisfiable core [2023-11-23 06:59:06,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:06,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 06:59:06,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 06:59:07,221 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 06:59:07,221 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 29 treesize of output 17 [2023-11-23 06:59:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 87 proven. 45 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 06:59:07,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:59:07,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19986801] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:07,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:59:07,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 30 [2023-11-23 06:59:07,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911164600] [2023-11-23 06:59:07,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:59:07,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-23 06:59:07,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:07,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-23 06:59:07,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1283, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 06:59:07,645 INFO L87 Difference]: Start difference. First operand 700 states and 914 transitions. Second operand has 30 states, 28 states have (on average 5.107142857142857) internal successors, (143), 26 states have internal predecessors, (143), 10 states have call successors, (27), 8 states have call predecessors, (27), 9 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-23 06:59:11,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:13,930 WARN L539 Checker$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 06:59:16,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:22,529 WARN L539 Checker$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 06:59:24,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:27,238 WARN L539 Checker$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 06:59:27,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:27,845 INFO L93 Difference]: Finished difference Result 1745 states and 2237 transitions. [2023-11-23 06:59:27,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-23 06:59:27,845 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 5.107142857142857) internal successors, (143), 26 states have internal predecessors, (143), 10 states have call successors, (27), 8 states have call predecessors, (27), 9 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) Word has length 122 [2023-11-23 06:59:27,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:27,849 INFO L225 Difference]: With dead ends: 1745 [2023-11-23 06:59:27,849 INFO L226 Difference]: Without dead ends: 1229 [2023-11-23 06:59:27,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 213 SyntacticMatches, 8 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1618 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=732, Invalid=5588, Unknown=0, NotChecked=0, Total=6320 [2023-11-23 06:59:27,852 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 596 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 5095 mSolverCounterSat, 354 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 5455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 354 IncrementalHoareTripleChecker+Valid, 5095 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:27,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 606 Invalid, 5455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [354 Valid, 5095 Invalid, 6 Unknown, 0 Unchecked, 18.4s Time] [2023-11-23 06:59:27,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2023-11-23 06:59:27,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1104. [2023-11-23 06:59:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 807 states have (on average 1.1895910780669146) internal successors, (960), 838 states have internal predecessors, (960), 209 states have call successors, (209), 58 states have call predecessors, (209), 87 states have return successors, (261), 207 states have call predecessors, (261), 197 states have call successors, (261) [2023-11-23 06:59:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1430 transitions. [2023-11-23 06:59:27,942 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1430 transitions. Word has length 122 [2023-11-23 06:59:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:27,942 INFO L495 AbstractCegarLoop]: Abstraction has 1104 states and 1430 transitions. [2023-11-23 06:59:27,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 5.107142857142857) internal successors, (143), 26 states have internal predecessors, (143), 10 states have call successors, (27), 8 states have call predecessors, (27), 9 states have return successors, (24), 10 states have call predecessors, (24), 10 states have call successors, (24) [2023-11-23 06:59:27,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1430 transitions. [2023-11-23 06:59:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 06:59:27,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:27,944 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:27,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 06:59:28,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:28,152 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:28,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:28,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1131135969, now seen corresponding path program 1 times [2023-11-23 06:59:28,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:28,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209644792] [2023-11-23 06:59:28,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:28,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:28,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:59:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:59:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:59:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:59:29,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:59:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:59:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:59:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:59:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,881 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 41 proven. 28 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 06:59:29,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:29,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209644792] [2023-11-23 06:59:29,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209644792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:29,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865956642] [2023-11-23 06:59:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:29,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:29,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:29,882 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:59:29,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 06:59:30,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:30,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-23 06:59:30,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:30,622 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 06:59:30,657 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 07:00:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 62 proven. 42 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 07:00:22,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:00:23,056 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 26 proven. 43 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 07:00:23,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865956642] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:00:23,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:00:23,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 12] total 35 [2023-11-23 07:00:23,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813706942] [2023-11-23 07:00:23,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:00:23,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-23 07:00:23,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:23,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-23 07:00:23,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1075, Unknown=3, NotChecked=0, Total=1190 [2023-11-23 07:00:23,059 INFO L87 Difference]: Start difference. First operand 1104 states and 1430 transitions. Second operand has 35 states, 33 states have (on average 4.515151515151516) internal successors, (149), 32 states have internal predecessors, (149), 12 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (33), 10 states have call predecessors, (33), 11 states have call successors, (33) [2023-11-23 07:00:26,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:29,194 WARN L539 Checker$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 07:00:33,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:35,356 WARN L539 Checker$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 07:00:37,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:39,411 WARN L539 Checker$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 07:00:41,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:43,539 WARN L539 Checker$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 07:00:45,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:55,120 WARN L539 Checker$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 07:00:57,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:59,521 WARN L539 Checker$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 07:01:01,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:06,056 WARN L539 Checker$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 07:01:12,713 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 07:01:13,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:13,176 INFO L93 Difference]: Finished difference Result 1631 states and 2069 transitions. [2023-11-23 07:01:13,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-23 07:01:13,176 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.515151515151516) internal successors, (149), 32 states have internal predecessors, (149), 12 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (33), 10 states have call predecessors, (33), 11 states have call successors, (33) Word has length 122 [2023-11-23 07:01:13,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:13,180 INFO L225 Difference]: With dead ends: 1631 [2023-11-23 07:01:13,180 INFO L226 Difference]: Without dead ends: 1040 [2023-11-23 07:01:13,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 238 SyntacticMatches, 13 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 67.1s TimeCoverageRelationStatistics Valid=379, Invalid=3033, Unknown=10, NotChecked=0, Total=3422 [2023-11-23 07:01:13,182 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 294 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 3951 mSolverCounterSat, 116 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 4082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 3951 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:13,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1005 Invalid, 4082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 3951 Invalid, 15 Unknown, 0 Unchecked, 35.0s Time] [2023-11-23 07:01:13,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2023-11-23 07:01:13,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1013. [2023-11-23 07:01:13,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 730 states have (on average 1.1767123287671233) internal successors, (859), 763 states have internal predecessors, (859), 191 states have call successors, (191), 62 states have call predecessors, (191), 91 states have return successors, (246), 187 states have call predecessors, (246), 175 states have call successors, (246) [2023-11-23 07:01:13,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1296 transitions. [2023-11-23 07:01:13,260 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1296 transitions. Word has length 122 [2023-11-23 07:01:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:13,260 INFO L495 AbstractCegarLoop]: Abstraction has 1013 states and 1296 transitions. [2023-11-23 07:01:13,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.515151515151516) internal successors, (149), 32 states have internal predecessors, (149), 12 states have call successors, (36), 6 states have call predecessors, (36), 7 states have return successors, (33), 10 states have call predecessors, (33), 11 states have call successors, (33) [2023-11-23 07:01:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1296 transitions. [2023-11-23 07:01:13,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 07:01:13,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:13,262 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:13,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 07:01:13,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:13,473 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:13,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:13,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1781344812, now seen corresponding path program 1 times [2023-11-23 07:01:13,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:13,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825824812] [2023-11-23 07:01:13,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:13,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:13,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:01:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:13,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:01:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:13,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:01:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:01:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:01:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:13,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:01:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:13,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 07:01:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 07:01:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:14,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:01:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:14,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:01:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-11-23 07:01:14,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:14,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825824812] [2023-11-23 07:01:14,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825824812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:01:14,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:01:14,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 07:01:14,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548101917] [2023-11-23 07:01:14,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:01:14,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:01:14,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:14,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:01:14,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:01:14,080 INFO L87 Difference]: Start difference. First operand 1013 states and 1296 transitions. Second operand has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 07:01:15,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:15,663 INFO L93 Difference]: Finished difference Result 1125 states and 1424 transitions. [2023-11-23 07:01:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:01:15,664 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 124 [2023-11-23 07:01:15,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:15,667 INFO L225 Difference]: With dead ends: 1125 [2023-11-23 07:01:15,668 INFO L226 Difference]: Without dead ends: 1119 [2023-11-23 07:01:15,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-11-23 07:01:15,669 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 100 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 1049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:15,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 457 Invalid, 1049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 07:01:15,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2023-11-23 07:01:15,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1050. [2023-11-23 07:01:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 754 states have (on average 1.1684350132625996) internal successors, (881), 790 states have internal predecessors, (881), 197 states have call successors, (197), 66 states have call predecessors, (197), 98 states have return successors, (263), 193 states have call predecessors, (263), 183 states have call successors, (263) [2023-11-23 07:01:15,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1341 transitions. [2023-11-23 07:01:15,739 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1341 transitions. Word has length 124 [2023-11-23 07:01:15,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:15,740 INFO L495 AbstractCegarLoop]: Abstraction has 1050 states and 1341 transitions. [2023-11-23 07:01:15,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 07:01:15,740 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1341 transitions. [2023-11-23 07:01:15,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 07:01:15,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:15,742 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:15,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 07:01:15,743 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:15,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:15,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1134586166, now seen corresponding path program 1 times [2023-11-23 07:01:15,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:15,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436666000] [2023-11-23 07:01:15,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:15,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15