./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_cursor_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_from_whole_cursor_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 573b81394e08ed105bd02e1947cc2abcc57eca4fad7f91bedb01680df3981d90 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:00:18,470 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:00:18,551 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:00:18,557 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:00:18,558 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:00:18,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:00:18,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:00:18,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:00:18,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:00:18,592 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:00:18,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:00:18,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:00:18,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:00:18,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:00:18,594 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:00:18,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:00:18,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:00:18,595 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:00:18,596 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:00:18,596 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:00:18,597 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:00:18,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:00:18,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:00:18,601 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:00:18,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:00:18,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:00:18,605 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:00:18,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:00:18,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:00:18,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:00:18,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:00:18,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:00:18,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:00:18,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:00:18,608 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:00:18,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:00:18,609 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:00:18,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:00:18,609 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:00:18,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 573b81394e08ed105bd02e1947cc2abcc57eca4fad7f91bedb01680df3981d90 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:00:18,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:00:18,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:00:18,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:00:18,853 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:00:18,854 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:00:18,855 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_cursor_harness.i [2023-11-23 07:00:19,976 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:00:20,416 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:00:20,433 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_cursor_harness.i [2023-11-23 07:00:20,486 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd955f2b1/b8003d48e8854c46856d24334e8002e7/FLAGfc5c45c73 [2023-11-23 07:00:20,496 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd955f2b1/b8003d48e8854c46856d24334e8002e7 [2023-11-23 07:00:20,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:00:20,499 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:00:20,500 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:00:20,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:00:20,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:00:20,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:00:20" (1/1) ... [2023-11-23 07:00:20,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1714a01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:20, skipping insertion in model container [2023-11-23 07:00:20,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:00:20" (1/1) ... [2023-11-23 07:00:20,620 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:00:20,854 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_cursor_harness.i[4510,4523] [2023-11-23 07:00:20,862 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_cursor_harness.i[4570,4583] [2023-11-23 07:00:21,392 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,392 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,393 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,393 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,394 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,401 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,402 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,403 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,403 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,628 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:00:21,629 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:00:21,630 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:00:21,630 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:00:21,631 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:00:21,632 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:00:21,633 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:00:21,634 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:00:21,635 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:00:21,636 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:00:21,802 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,810 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,873 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:00:21,913 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:00:21,924 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_cursor_harness.i[4510,4523] [2023-11-23 07:00:21,924 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_cursor_harness.i[4570,4583] [2023-11-23 07:00:21,992 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,993 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,993 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,993 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,994 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,998 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,998 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,999 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:21,999 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:22,062 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:00:22,062 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:00:22,063 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:00:22,063 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:00:22,066 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:00:22,067 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:00:22,067 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:00:22,067 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:00:22,068 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:00:22,072 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:00:22,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-23 07:00:22,116 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:22,116 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:00:22,123 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-23 07:00:22,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:00:22,337 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,337 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,337 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,337 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,338 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,338 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,338 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,338 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,338 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,339 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,339 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,339 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,339 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,340 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,340 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,340 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,340 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,341 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:00:22,348 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:00:22,349 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22 WrapperNode [2023-11-23 07:00:22,349 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:00:22,350 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:00:22,350 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:00:22,350 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:00:22,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (1/1) ... [2023-11-23 07:00:22,450 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (1/1) ... [2023-11-23 07:00:22,523 INFO L138 Inliner]: procedures = 690, calls = 2656, calls flagged for inlining = 65, calls inlined = 12, statements flattened = 981 [2023-11-23 07:00:22,523 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:00:22,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:00:22,524 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:00:22,524 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:00:22,533 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (1/1) ... [2023-11-23 07:00:22,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (1/1) ... [2023-11-23 07:00:22,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (1/1) ... [2023-11-23 07:00:22,617 INFO L188 MemorySlicer]: Split 590 memory accesses to 8 slices as follows [2, 256, 247, 46, 6, 27, 3, 3]. 43 percent of accesses are in the largest equivalence class. The 508 initializations are split as follows [2, 256, 241, 4, 0, 0, 2, 3]. The 9 writes are split as follows [0, 0, 1, 3, 2, 3, 0, 0]. [2023-11-23 07:00:22,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (1/1) ... [2023-11-23 07:00:22,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (1/1) ... [2023-11-23 07:00:22,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (1/1) ... [2023-11-23 07:00:22,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (1/1) ... [2023-11-23 07:00:22,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (1/1) ... [2023-11-23 07:00:22,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (1/1) ... [2023-11-23 07:00:22,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:00:22,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:00:22,710 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:00:22,710 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:00:22,711 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (1/1) ... [2023-11-23 07:00:22,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:00:22,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:00:22,750 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 07:00:22,800 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 07:00:22,832 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 07:00:22,833 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 07:00:22,833 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 07:00:22,833 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 07:00:22,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:00:22,833 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:00:22,834 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:00:22,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:00:22,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:00:22,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:00:22,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:00:22,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:00:22,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:00:22,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 07:00:22,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 07:00:22,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:00:22,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:00:22,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:00:22,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:00:22,835 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 07:00:22,835 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 07:00:22,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:00:22,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:00:22,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:00:22,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:00:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:00:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:00:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:00:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 07:00:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 07:00:22,836 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 07:00:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:00:22,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:00:22,836 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:00:22,836 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:00:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 07:00:22,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 07:00:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:00:22,837 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:00:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 07:00:22,837 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 07:00:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:00:22,837 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:00:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:00:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:00:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:00:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:00:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 07:00:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 07:00:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 07:00:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-23 07:00:22,838 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-23 07:00:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:00:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:00:22,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:00:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:00:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:00:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:00:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:00:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 07:00:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 07:00:22,839 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 07:00:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 07:00:22,839 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 07:00:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:00:22,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:00:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:00:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:00:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:00:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:00:22,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 07:00:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 07:00:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:00:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:00:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:00:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:00:22,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:00:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:00:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 07:00:22,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 07:00:23,168 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:00:23,170 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:00:23,944 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:00:24,077 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:00:24,078 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 07:00:24,079 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:00:24 BoogieIcfgContainer [2023-11-23 07:00:24,081 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:00:24,084 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:00:24,084 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:00:24,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:00:24,088 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:00:20" (1/3) ... [2023-11-23 07:00:24,089 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709c5b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:00:24, skipping insertion in model container [2023-11-23 07:00:24,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:00:22" (2/3) ... [2023-11-23 07:00:24,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@709c5b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:00:24, skipping insertion in model container [2023-11-23 07:00:24,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:00:24" (3/3) ... [2023-11-23 07:00:24,093 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_cursor_harness.i [2023-11-23 07:00:24,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:00:24,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:00:24,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:00:24,187 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;@711791da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:00:24,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:00:24,192 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 107 states have internal predecessors, (138), 53 states have call successors, (53), 13 states have call predecessors, (53), 13 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-23 07:00:24,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 07:00:24,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:24,211 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:24,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:24,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:24,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1289586112, now seen corresponding path program 1 times [2023-11-23 07:00:24,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:24,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253030746] [2023-11-23 07:00:24,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:24,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:24,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:24,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:24,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:24,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:24,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:24,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:00:24,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:24,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:00:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:24,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:00:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:00:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:24,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:00:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:00:25,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:25,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:00:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:25,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 07:00:25,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:25,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:00:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:25,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:00:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:25,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:00:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 07:00:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:25,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:00:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:25,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:00:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:25,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 07:00:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-11-23 07:00:25,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:25,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253030746] [2023-11-23 07:00:25,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253030746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:00:25,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:00:25,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:00:25,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508127591] [2023-11-23 07:00:25,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:00:25,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:00:25,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:25,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:00:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:00:25,306 INFO L87 Difference]: Start difference. First operand has 174 states, 106 states have (on average 1.3018867924528301) internal successors, (138), 107 states have internal predecessors, (138), 53 states have call successors, (53), 13 states have call predecessors, (53), 13 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 07:00:26,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:26,709 INFO L93 Difference]: Finished difference Result 356 states and 538 transitions. [2023-11-23 07:00:26,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:00:26,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 126 [2023-11-23 07:00:26,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:26,726 INFO L225 Difference]: With dead ends: 356 [2023-11-23 07:00:26,727 INFO L226 Difference]: Without dead ends: 181 [2023-11-23 07:00:26,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:00:26,745 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 162 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:26,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 201 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 07:00:26,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-23 07:00:26,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2023-11-23 07:00:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 105 states have internal predecessors, (131), 53 states have call successors, (53), 13 states have call predecessors, (53), 13 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 07:00:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 236 transitions. [2023-11-23 07:00:26,801 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 236 transitions. Word has length 126 [2023-11-23 07:00:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:26,801 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 236 transitions. [2023-11-23 07:00:26,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 07:00:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 236 transitions. [2023-11-23 07:00:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 07:00:26,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:26,805 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:26,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 07:00:26,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:26,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:26,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1876738952, now seen corresponding path program 1 times [2023-11-23 07:00:26,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:26,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500815155] [2023-11-23 07:00:26,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:00:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:00:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:00:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:00:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:00:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:00:27,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:00:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 07:00:27,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:00:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:00:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:00:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 07:00:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:00:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:00:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 07:00:27,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2023-11-23 07:00:27,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:27,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500815155] [2023-11-23 07:00:27,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500815155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:00:27,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746193126] [2023-11-23 07:00:27,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:27,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:27,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:00:27,729 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 07:00:27,764 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 07:00:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:28,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 2963 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:00:28,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:00:28,357 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 07:00:28,357 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:00:28,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746193126] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:00:28,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:00:28,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 07:00:28,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463009169] [2023-11-23 07:00:28,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:00:28,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:00:28,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:28,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:00:28,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:00:28,361 INFO L87 Difference]: Start difference. First operand 171 states and 236 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 07:00:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:28,682 INFO L93 Difference]: Finished difference Result 331 states and 461 transitions. [2023-11-23 07:00:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:00:28,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 126 [2023-11-23 07:00:28,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:28,687 INFO L225 Difference]: With dead ends: 331 [2023-11-23 07:00:28,687 INFO L226 Difference]: Without dead ends: 173 [2023-11-23 07:00:28,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:00:28,689 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 65 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:28,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 536 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:00:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-23 07:00:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2023-11-23 07:00:28,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 105 states have (on average 1.2571428571428571) internal successors, (132), 107 states have internal predecessors, (132), 53 states have call successors, (53), 13 states have call predecessors, (53), 14 states have return successors, (56), 52 states have call predecessors, (56), 52 states have call successors, (56) [2023-11-23 07:00:28,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 241 transitions. [2023-11-23 07:00:28,722 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 241 transitions. Word has length 126 [2023-11-23 07:00:28,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:28,723 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 241 transitions. [2023-11-23 07:00:28,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 07:00:28,723 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 241 transitions. [2023-11-23 07:00:28,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 07:00:28,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:28,731 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:28,764 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 07:00:28,947 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 07:00:28,947 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:28,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:28,948 INFO L85 PathProgramCache]: Analyzing trace with hash 846002229, now seen corresponding path program 1 times [2023-11-23 07:00:28,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:28,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085032920] [2023-11-23 07:00:28,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:28,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:29,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:00:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:00:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:00:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:00:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:00:29,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:00:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 07:00:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:00:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:00:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 07:00:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 07:00:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 07:00:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:00:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 07:00:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 07:00:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:29,529 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-23 07:00:29,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:29,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085032920] [2023-11-23 07:00:29,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085032920] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:00:29,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918791996] [2023-11-23 07:00:29,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:29,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:29,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:00:29,532 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 07:00:29,544 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 07:00:30,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:30,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 2977 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:00:30,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:00:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-23 07:00:30,065 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:00:30,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918791996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:00:30,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:00:30,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-23 07:00:30,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372583114] [2023-11-23 07:00:30,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:00:30,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:00:30,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:30,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:00:30,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:00:30,068 INFO L87 Difference]: Start difference. First operand 173 states and 241 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 07:00:30,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:30,358 INFO L93 Difference]: Finished difference Result 355 states and 502 transitions. [2023-11-23 07:00:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:00:30,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2023-11-23 07:00:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:30,360 INFO L225 Difference]: With dead ends: 355 [2023-11-23 07:00:30,360 INFO L226 Difference]: Without dead ends: 195 [2023-11-23 07:00:30,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:00:30,361 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 42 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:30,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 664 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:00:30,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-23 07:00:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 175. [2023-11-23 07:00:30,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 107 states have (on average 1.2523364485981308) internal successors, (134), 109 states have internal predecessors, (134), 53 states have call successors, (53), 13 states have call predecessors, (53), 14 states have return successors, (56), 52 states have call predecessors, (56), 52 states have call successors, (56) [2023-11-23 07:00:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 243 transitions. [2023-11-23 07:00:30,374 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 243 transitions. Word has length 132 [2023-11-23 07:00:30,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:30,374 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 243 transitions. [2023-11-23 07:00:30,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 07:00:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 243 transitions. [2023-11-23 07:00:30,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 07:00:30,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:30,376 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:30,392 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 07:00:30,591 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 07:00:30,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:30,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:30,592 INFO L85 PathProgramCache]: Analyzing trace with hash 964443703, now seen corresponding path program 1 times [2023-11-23 07:00:30,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:30,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177171571] [2023-11-23 07:00:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:30,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:30,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:30,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:30,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:30,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:00:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:30,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:00:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:30,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:00:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:30,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:00:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:30,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:00:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:31,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:00:31,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 07:00:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:31,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:00:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:31,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:00:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:31,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 07:00:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:31,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 07:00:31,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:31,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 07:00:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:31,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:00:31,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:31,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 07:00:31,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:31,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 07:00:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-23 07:00:31,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:31,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177171571] [2023-11-23 07:00:31,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177171571] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:00:31,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081728517] [2023-11-23 07:00:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:31,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:31,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:00:31,116 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 07:00:31,136 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 07:00:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:31,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 2972 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:00:31,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:00:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-23 07:00:31,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:00:31,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081728517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:00:31,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:00:31,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-11-23 07:00:31,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693546654] [2023-11-23 07:00:31,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:00:31,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:00:31,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:31,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:00:31,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:00:31,636 INFO L87 Difference]: Start difference. First operand 175 states and 243 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 07:00:32,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:32,040 INFO L93 Difference]: Finished difference Result 347 states and 489 transitions. [2023-11-23 07:00:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:00:32,041 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2023-11-23 07:00:32,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:32,042 INFO L225 Difference]: With dead ends: 347 [2023-11-23 07:00:32,042 INFO L226 Difference]: Without dead ends: 185 [2023-11-23 07:00:32,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:00:32,043 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 29 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:32,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 645 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:00:32,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-23 07:00:32,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 177. [2023-11-23 07:00:32,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 111 states have internal predecessors, (136), 53 states have call successors, (53), 13 states have call predecessors, (53), 14 states have return successors, (56), 52 states have call predecessors, (56), 52 states have call successors, (56) [2023-11-23 07:00:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 245 transitions. [2023-11-23 07:00:32,055 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 245 transitions. Word has length 132 [2023-11-23 07:00:32,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:32,055 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 245 transitions. [2023-11-23 07:00:32,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 07:00:32,055 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 245 transitions. [2023-11-23 07:00:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 07:00:32,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:32,057 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:32,079 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 07:00:32,272 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 07:00:32,273 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:32,273 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:32,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1307104589, now seen corresponding path program 1 times [2023-11-23 07:00:32,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:32,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282585453] [2023-11-23 07:00:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:32,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:32,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:00:32,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:00:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:00:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:00:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:00:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:00:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 07:00:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:00:32,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:00:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 07:00:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 07:00:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 07:00:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:32,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:00:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:33,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 07:00:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 07:00:33,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:33,018 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2023-11-23 07:00:33,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:33,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282585453] [2023-11-23 07:00:33,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282585453] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:00:33,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219826503] [2023-11-23 07:00:33,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:33,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:33,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:00:33,034 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 07:00:33,052 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 07:00:33,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:33,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 2980 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:00:33,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:00:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-23 07:00:33,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:00:33,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219826503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:00:33,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:00:33,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 07:00:33,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035317866] [2023-11-23 07:00:33,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:00:33,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:00:33,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:33,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:00:33,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:00:33,685 INFO L87 Difference]: Start difference. First operand 177 states and 245 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 07:00:34,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:34,050 INFO L93 Difference]: Finished difference Result 327 states and 455 transitions. [2023-11-23 07:00:34,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:00:34,050 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 132 [2023-11-23 07:00:34,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:34,053 INFO L225 Difference]: With dead ends: 327 [2023-11-23 07:00:34,054 INFO L226 Difference]: Without dead ends: 179 [2023-11-23 07:00:34,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:00:34,055 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 55 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:34,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 742 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:00:34,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-23 07:00:34,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-11-23 07:00:34,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 113 states have internal predecessors, (137), 53 states have call successors, (53), 13 states have call predecessors, (53), 15 states have return successors, (57), 52 states have call predecessors, (57), 52 states have call successors, (57) [2023-11-23 07:00:34,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 247 transitions. [2023-11-23 07:00:34,071 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 247 transitions. Word has length 132 [2023-11-23 07:00:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:34,072 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 247 transitions. [2023-11-23 07:00:34,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 07:00:34,073 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 247 transitions. [2023-11-23 07:00:34,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 07:00:34,074 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:34,075 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:34,092 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 07:00:34,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:34,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:34,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:34,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1979101528, now seen corresponding path program 1 times [2023-11-23 07:00:34,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:34,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493716237] [2023-11-23 07:00:34,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:34,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:34,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:34,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:00:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:00:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:00:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:00:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:00:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:00:34,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:00:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:00:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:00:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:00:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 07:00:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 07:00:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 07:00:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 07:00:34,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 07:00:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2023-11-23 07:00:34,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:34,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493716237] [2023-11-23 07:00:34,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493716237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:00:34,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286635021] [2023-11-23 07:00:34,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:34,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:34,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:00:34,988 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 07:00:35,028 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 07:00:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:35,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 2985 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:00:35,535 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:00:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 07:00:35,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:00:35,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286635021] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:00:35,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:00:35,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 07:00:35,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577127586] [2023-11-23 07:00:35,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:00:35,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:00:35,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:35,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:00:35,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:00:35,641 INFO L87 Difference]: Start difference. First operand 179 states and 247 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 07:00:35,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:35,944 INFO L93 Difference]: Finished difference Result 313 states and 431 transitions. [2023-11-23 07:00:35,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:00:35,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) Word has length 134 [2023-11-23 07:00:35,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:35,946 INFO L225 Difference]: With dead ends: 313 [2023-11-23 07:00:35,946 INFO L226 Difference]: Without dead ends: 179 [2023-11-23 07:00:35,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:00:35,947 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 59 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:35,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 738 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:00:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-23 07:00:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-11-23 07:00:35,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 110 states have (on average 1.2454545454545454) internal successors, (137), 113 states have internal predecessors, (137), 53 states have call successors, (53), 13 states have call predecessors, (53), 15 states have return successors, (56), 52 states have call predecessors, (56), 52 states have call successors, (56) [2023-11-23 07:00:35,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 246 transitions. [2023-11-23 07:00:35,957 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 246 transitions. Word has length 134 [2023-11-23 07:00:35,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:35,958 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 246 transitions. [2023-11-23 07:00:35,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 07:00:35,958 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 246 transitions. [2023-11-23 07:00:35,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-23 07:00:35,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:35,959 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:35,977 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 07:00:36,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:36,176 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:36,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:36,176 INFO L85 PathProgramCache]: Analyzing trace with hash 691560899, now seen corresponding path program 2 times [2023-11-23 07:00:36,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:36,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317573682] [2023-11-23 07:00:36,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:36,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:00:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:00:36,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:00:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:00:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:00:36,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:00:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:00:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:00:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:00:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:00:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 07:00:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 07:00:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 07:00:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 07:00:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 07:00:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:36,975 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-23 07:00:36,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:36,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317573682] [2023-11-23 07:00:36,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317573682] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:00:36,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280288267] [2023-11-23 07:00:36,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:00:36,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:36,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:00:36,978 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 07:00:37,000 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 07:00:37,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:00:37,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:00:37,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 3002 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 07:00:37,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:00:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-23 07:00:37,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:00:37,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280288267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:00:37,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:00:37,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-23 07:00:37,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256200743] [2023-11-23 07:00:37,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:00:37,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:00:37,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:00:37,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:00:37,651 INFO L87 Difference]: Start difference. First operand 179 states and 246 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 07:00:38,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:38,370 INFO L93 Difference]: Finished difference Result 305 states and 416 transitions. [2023-11-23 07:00:38,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:00:38,371 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 140 [2023-11-23 07:00:38,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:38,372 INFO L225 Difference]: With dead ends: 305 [2023-11-23 07:00:38,372 INFO L226 Difference]: Without dead ends: 177 [2023-11-23 07:00:38,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:00:38,374 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 74 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:38,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 1107 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:00:38,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-23 07:00:38,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-11-23 07:00:38,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 109 states have (on average 1.238532110091743) internal successors, (135), 111 states have internal predecessors, (135), 53 states have call successors, (53), 13 states have call predecessors, (53), 14 states have return successors, (53), 52 states have call predecessors, (53), 52 states have call successors, (53) [2023-11-23 07:00:38,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 241 transitions. [2023-11-23 07:00:38,385 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 241 transitions. Word has length 140 [2023-11-23 07:00:38,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:38,386 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 241 transitions. [2023-11-23 07:00:38,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 07:00:38,386 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 241 transitions. [2023-11-23 07:00:38,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-23 07:00:38,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:38,388 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:38,421 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 07:00:38,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:38,604 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:38,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:38,605 INFO L85 PathProgramCache]: Analyzing trace with hash 642086243, now seen corresponding path program 1 times [2023-11-23 07:00:38,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:38,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424368849] [2023-11-23 07:00:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:38,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:38,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:38,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:38,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:38,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:38,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:38,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:38,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:00:39,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:00:39,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:00:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:00:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:00:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:00:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:00:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:00:39,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:00:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:00:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 07:00:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 07:00:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 07:00:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 07:00:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 07:00:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-23 07:00:39,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:39,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424368849] [2023-11-23 07:00:39,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424368849] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:00:39,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:00:39,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 07:00:39,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167561838] [2023-11-23 07:00:39,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:00:39,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:00:39,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:39,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:00:39,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:00:39,248 INFO L87 Difference]: Start difference. First operand 177 states and 241 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 07:00:40,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:40,759 INFO L93 Difference]: Finished difference Result 316 states and 426 transitions. [2023-11-23 07:00:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:00:40,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 152 [2023-11-23 07:00:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:40,761 INFO L225 Difference]: With dead ends: 316 [2023-11-23 07:00:40,761 INFO L226 Difference]: Without dead ends: 185 [2023-11-23 07:00:40,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:00:40,763 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 175 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:40,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 433 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 07:00:40,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-23 07:00:40,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 175. [2023-11-23 07:00:40,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 108 states have (on average 1.2314814814814814) internal successors, (133), 109 states have internal predecessors, (133), 53 states have call successors, (53), 13 states have call predecessors, (53), 13 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 07:00:40,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 238 transitions. [2023-11-23 07:00:40,775 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 238 transitions. Word has length 152 [2023-11-23 07:00:40,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:40,776 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 238 transitions. [2023-11-23 07:00:40,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 07:00:40,776 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 238 transitions. [2023-11-23 07:00:40,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 07:00:40,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:40,777 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:40,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 07:00:40,778 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:40,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:40,778 INFO L85 PathProgramCache]: Analyzing trace with hash -766390498, now seen corresponding path program 1 times [2023-11-23 07:00:40,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:40,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486867565] [2023-11-23 07:00:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:40,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:41,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:00:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:00:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:00:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:00:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:00:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:00:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:00:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:00:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:00:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:00:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 07:00:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 07:00:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 07:00:41,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 07:00:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 07:00:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:41,862 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-23 07:00:41,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:41,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486867565] [2023-11-23 07:00:41,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486867565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:00:41,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:00:41,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 07:00:41,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995711457] [2023-11-23 07:00:41,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:00:41,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:00:41,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:41,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:00:41,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:00:41,865 INFO L87 Difference]: Start difference. First operand 175 states and 238 transitions. Second operand has 10 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-23 07:00:44,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:44,634 INFO L93 Difference]: Finished difference Result 196 states and 266 transitions. [2023-11-23 07:00:44,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:00:44,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 154 [2023-11-23 07:00:44,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:44,638 INFO L225 Difference]: With dead ends: 196 [2023-11-23 07:00:44,638 INFO L226 Difference]: Without dead ends: 194 [2023-11-23 07:00:44,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:00:44,640 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 193 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:44,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 688 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 07:00:44,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-23 07:00:44,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 183. [2023-11-23 07:00:44,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 113 states have (on average 1.2212389380530972) internal successors, (138), 115 states have internal predecessors, (138), 54 states have call successors, (54), 14 states have call predecessors, (54), 15 states have return successors, (59), 53 states have call predecessors, (59), 53 states have call successors, (59) [2023-11-23 07:00:44,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 251 transitions. [2023-11-23 07:00:44,651 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 251 transitions. Word has length 154 [2023-11-23 07:00:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:44,651 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 251 transitions. [2023-11-23 07:00:44,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (23), 4 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-23 07:00:44,651 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 251 transitions. [2023-11-23 07:00:44,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-23 07:00:44,652 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:44,653 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:44,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 07:00:44,653 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:44,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:44,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1227926382, now seen corresponding path program 1 times [2023-11-23 07:00:44,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:44,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867064703] [2023-11-23 07:00:44,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:44,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:46,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:46,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:00:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:00:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:00:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:00:46,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:00:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:00:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:00:46,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:00:46,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:00:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:00:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 07:00:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 07:00:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 07:00:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 07:00:46,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 07:00:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-23 07:00:46,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867064703] [2023-11-23 07:00:46,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867064703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:00:46,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152519968] [2023-11-23 07:00:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:46,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:46,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:00:46,757 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 07:00:46,783 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 07:00:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:47,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 3045 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 07:00:47,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:00:47,359 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 07:00:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-23 07:00:47,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:00:47,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152519968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:00:47,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:00:47,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 26 [2023-11-23 07:00:47,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637787781] [2023-11-23 07:00:47,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:00:47,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:00:47,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:47,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:00:47,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:00:47,686 INFO L87 Difference]: Start difference. First operand 183 states and 251 transitions. Second operand has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 07:00:50,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:52,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:54,807 WARN L539 Checker$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 07:00:57,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:59,411 WARN L539 Checker$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 07:01:01,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:03,583 WARN L539 Checker$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 07:01:03,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:03,668 INFO L93 Difference]: Finished difference Result 458 states and 617 transitions. [2023-11-23 07:01:03,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:01:03,669 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 158 [2023-11-23 07:01:03,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:03,671 INFO L225 Difference]: With dead ends: 458 [2023-11-23 07:01:03,671 INFO L226 Difference]: Without dead ends: 288 [2023-11-23 07:01:03,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=780, Unknown=0, NotChecked=0, Total=870 [2023-11-23 07:01:03,674 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 214 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 9 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:03,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1195 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 654 Invalid, 7 Unknown, 0 Unchecked, 15.8s Time] [2023-11-23 07:01:03,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-23 07:01:03,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 283. [2023-11-23 07:01:03,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 183 states have (on average 1.2349726775956285) internal successors, (226), 186 states have internal predecessors, (226), 75 states have call successors, (75), 22 states have call predecessors, (75), 24 states have return successors, (78), 74 states have call predecessors, (78), 73 states have call successors, (78) [2023-11-23 07:01:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 379 transitions. [2023-11-23 07:01:03,699 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 379 transitions. Word has length 158 [2023-11-23 07:01:03,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:03,700 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 379 transitions. [2023-11-23 07:01:03,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (23), 3 states have call predecessors, (23), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 07:01:03,700 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 379 transitions. [2023-11-23 07:01:03,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-23 07:01:03,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:03,703 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:03,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 07:01:03,918 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 07:01:03,919 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:03,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:03,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1806106270, now seen corresponding path program 2 times [2023-11-23 07:01:03,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:03,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18696875] [2023-11-23 07:01:03,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:03,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:01:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:01:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:01:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 07:01:04,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:01:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:01:04,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:01:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 07:01:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:01:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 07:01:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:01:04,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:01:04,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:01:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:01:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 07:01:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 07:01:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 07:01:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 07:01:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 07:01:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-23 07:01:04,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18696875] [2023-11-23 07:01:04,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18696875] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:01:04,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743997607] [2023-11-23 07:01:04,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:01:04,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:04,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:01:04,892 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 07:01:04,894 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 07:01:05,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:01:05,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:01:05,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 3049 conjuncts, 90 conjunts are in the unsatisfiable core [2023-11-23 07:01:05,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:01:05,760 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 07:01:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 180 proven. 13 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 07:01:06,827 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:01:08,381 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 9 treesize of output 5 [2023-11-23 07:01:08,458 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 07:01:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 32 proven. 21 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2023-11-23 07:01:08,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743997607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:01:08,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:01:08,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 24] total 51 [2023-11-23 07:01:08,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997923751] [2023-11-23 07:01:08,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:01:08,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-11-23 07:01:08,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:08,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-11-23 07:01:08,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=2379, Unknown=0, NotChecked=0, Total=2550 [2023-11-23 07:01:08,628 INFO L87 Difference]: Start difference. First operand 283 states and 379 transitions. Second operand has 51 states, 43 states have (on average 4.465116279069767) internal successors, (192), 43 states have internal predecessors, (192), 17 states have call successors, (64), 11 states have call predecessors, (64), 15 states have return successors, (61), 15 states have call predecessors, (61), 17 states have call successors, (61) [2023-11-23 07:01:11,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:16,828 WARN L539 Checker$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 07:01:18,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:38,067 WARN L539 Checker$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 07:01:40,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:45,496 WARN L539 Checker$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 07:01:48,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:50,754 WARN L539 Checker$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 07:01:53,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:55,293 WARN L539 Checker$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 07:01:55,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:55,891 INFO L93 Difference]: Finished difference Result 817 states and 1110 transitions. [2023-11-23 07:01:55,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-23 07:01:55,892 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 43 states have (on average 4.465116279069767) internal successors, (192), 43 states have internal predecessors, (192), 17 states have call successors, (64), 11 states have call predecessors, (64), 15 states have return successors, (61), 15 states have call predecessors, (61), 17 states have call successors, (61) Word has length 162 [2023-11-23 07:01:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:55,895 INFO L225 Difference]: With dead ends: 817 [2023-11-23 07:01:55,895 INFO L226 Difference]: Without dead ends: 545 [2023-11-23 07:01:55,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 328 SyntacticMatches, 13 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5282 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=2524, Invalid=17480, Unknown=18, NotChecked=0, Total=20022 [2023-11-23 07:01:55,903 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 2073 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 7272 mSolverCounterSat, 1323 mSolverCounterUnsat, 65 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 8660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1323 IncrementalHoareTripleChecker+Valid, 7272 IncrementalHoareTripleChecker+Invalid, 65 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:55,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2117 Valid, 1678 Invalid, 8660 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1323 Valid, 7272 Invalid, 65 Unknown, 0 Unchecked, 30.4s Time] [2023-11-23 07:01:55,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2023-11-23 07:01:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 475. [2023-11-23 07:01:55,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 311 states have (on average 1.234726688102894) internal successors, (384), 318 states have internal predecessors, (384), 123 states have call successors, (123), 35 states have call predecessors, (123), 40 states have return successors, (137), 121 states have call predecessors, (137), 120 states have call successors, (137) [2023-11-23 07:01:55,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 644 transitions. [2023-11-23 07:01:55,960 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 644 transitions. Word has length 162 [2023-11-23 07:01:55,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:55,960 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 644 transitions. [2023-11-23 07:01:55,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 43 states have (on average 4.465116279069767) internal successors, (192), 43 states have internal predecessors, (192), 17 states have call successors, (64), 11 states have call predecessors, (64), 15 states have return successors, (61), 15 states have call predecessors, (61), 17 states have call successors, (61) [2023-11-23 07:01:55,961 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 644 transitions. [2023-11-23 07:01:55,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-23 07:01:55,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:55,963 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:55,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-23 07:01:56,184 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 07:01:56,185 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:56,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:56,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1833167857, now seen corresponding path program 1 times [2023-11-23 07:01:56,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:56,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481011599] [2023-11-23 07:01:56,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:56,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:56,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:56,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:01:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:01:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:56,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:56,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:01:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:01:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:01:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:01:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:01:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:01:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:01:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:01:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:01:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:01:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:01:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:01:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 07:01:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 07:01:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 07:01:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 07:01:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 07:01:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-23 07:01:57,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:57,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481011599] [2023-11-23 07:01:57,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481011599] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:01:57,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240847845] [2023-11-23 07:01:57,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:57,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:57,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:01:57,356 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 07:01:57,361 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 07:01:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 3048 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 07:01:57,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:01:58,047 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 07:01:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 07:01:58,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:01:58,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240847845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:01:58,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:01:58,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 20 [2023-11-23 07:01:58,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783875802] [2023-11-23 07:01:58,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:01:58,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 07:01:58,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:58,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 07:01:58,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-23 07:01:58,970 INFO L87 Difference]: Start difference. First operand 475 states and 644 transitions. Second operand has 15 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 6 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2023-11-23 07:02:02,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:02:05,019 WARN L539 Checker$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 07:02:07,082 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 07:02:09,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:02:09,230 INFO L93 Difference]: Finished difference Result 826 states and 1112 transitions. [2023-11-23 07:02:09,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 07:02:09,231 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 6 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 168 [2023-11-23 07:02:09,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:02:09,234 INFO L225 Difference]: With dead ends: 826 [2023-11-23 07:02:09,234 INFO L226 Difference]: Without dead ends: 424 [2023-11-23 07:02:09,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 176 SyntacticMatches, 22 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=750, Unknown=0, NotChecked=0, Total=870 [2023-11-23 07:02:09,235 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 257 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 111 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 2566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:02:09,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1234 Invalid, 2566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2452 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2023-11-23 07:02:09,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2023-11-23 07:02:09,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 420. [2023-11-23 07:02:09,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 272 states have (on average 1.2316176470588236) internal successors, (335), 278 states have internal predecessors, (335), 111 states have call successors, (111), 32 states have call predecessors, (111), 36 states have return successors, (117), 109 states have call predecessors, (117), 108 states have call successors, (117) [2023-11-23 07:02:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 563 transitions. [2023-11-23 07:02:09,272 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 563 transitions. Word has length 168 [2023-11-23 07:02:09,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:02:09,273 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 563 transitions. [2023-11-23 07:02:09,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.461538461538462) internal successors, (84), 13 states have internal predecessors, (84), 6 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2023-11-23 07:02:09,273 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 563 transitions. [2023-11-23 07:02:09,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-23 07:02:09,275 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:02:09,276 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:02:09,310 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 07:02:09,492 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 07:02:09,492 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:02:09,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:02:09,493 INFO L85 PathProgramCache]: Analyzing trace with hash -200361255, now seen corresponding path program 1 times [2023-11-23 07:02:09,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:02:09,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178747031] [2023-11-23 07:02:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:02:09,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:02:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:02:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:02:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:02:10,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:02:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:02:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:02:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:02:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:02:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:02:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:02:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:02:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:02:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:02:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:02:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 07:02:10,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 07:02:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 07:02:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 07:02:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 07:02:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-23 07:02:10,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:02:10,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178747031] [2023-11-23 07:02:10,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178747031] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:02:10,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672524320] [2023-11-23 07:02:10,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:02:10,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:02:10,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:02:10,261 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 07:02:10,267 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 07:02:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:10,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 3047 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 07:02:10,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:02:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2023-11-23 07:02:10,886 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:02:10,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672524320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:02:10,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:02:10,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2023-11-23 07:02:10,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123875148] [2023-11-23 07:02:10,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:02:10,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:02:10,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:02:10,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:02:10,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:02:10,888 INFO L87 Difference]: Start difference. First operand 420 states and 563 transitions. Second operand has 9 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 07:02:11,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:02:11,717 INFO L93 Difference]: Finished difference Result 765 states and 1026 transitions. [2023-11-23 07:02:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:02:11,718 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 172 [2023-11-23 07:02:11,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:02:11,722 INFO L225 Difference]: With dead ends: 765 [2023-11-23 07:02:11,722 INFO L226 Difference]: Without dead ends: 428 [2023-11-23 07:02:11,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:02:11,725 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 13 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:02:11,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1565 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 07:02:11,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-11-23 07:02:11,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 424. [2023-11-23 07:02:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 275 states have (on average 1.229090909090909) internal successors, (338), 282 states have internal predecessors, (338), 111 states have call successors, (111), 32 states have call predecessors, (111), 37 states have return successors, (119), 109 states have call predecessors, (119), 108 states have call successors, (119) [2023-11-23 07:02:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 568 transitions. [2023-11-23 07:02:11,765 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 568 transitions. Word has length 172 [2023-11-23 07:02:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:02:11,767 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 568 transitions. [2023-11-23 07:02:11,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 07:02:11,768 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 568 transitions. [2023-11-23 07:02:11,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-23 07:02:11,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:02:11,769 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:02:11,807 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 07:02:11,983 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 07:02:11,983 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:02:11,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:02:11,984 INFO L85 PathProgramCache]: Analyzing trace with hash 318549824, now seen corresponding path program 2 times [2023-11-23 07:02:11,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:02:11,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72099402] [2023-11-23 07:02:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:02:11,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:02:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:12,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:02:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:02:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:02:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:02:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:02:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:02:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:02:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:02:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:02:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:02:12,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:02:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:02:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:02:12,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:02:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 07:02:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 07:02:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 07:02:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 07:02:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-23 07:02:12,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-23 07:02:12,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:02:12,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72099402] [2023-11-23 07:02:12,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72099402] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:02:12,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885081949] [2023-11-23 07:02:12,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:02:12,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:02:12,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:02:12,821 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 07:02:12,836 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 07:02:13,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 07:02:13,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:02:13,317 INFO L262 TraceCheckSpWp]: Trace formula consists of 2296 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:02:13,322 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:02:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-23 07:02:13,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:02:13,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885081949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:02:13,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:02:13,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-11-23 07:02:13,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138540912] [2023-11-23 07:02:13,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:02:13,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:02:13,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:02:13,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:02:13,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:02:13,398 INFO L87 Difference]: Start difference. First operand 424 states and 568 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-23 07:02:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:02:14,522 INFO L93 Difference]: Finished difference Result 862 states and 1186 transitions. [2023-11-23 07:02:14,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:02:14,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 174 [2023-11-23 07:02:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:02:14,525 INFO L225 Difference]: With dead ends: 862 [2023-11-23 07:02:14,525 INFO L226 Difference]: Without dead ends: 461 [2023-11-23 07:02:14,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:02:14,528 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 25 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:02:14,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 795 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 07:02:14,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-11-23 07:02:14,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 433. [2023-11-23 07:02:14,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 284 states have (on average 1.221830985915493) internal successors, (347), 291 states have internal predecessors, (347), 111 states have call successors, (111), 32 states have call predecessors, (111), 37 states have return successors, (119), 109 states have call predecessors, (119), 108 states have call successors, (119) [2023-11-23 07:02:14,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 577 transitions. [2023-11-23 07:02:14,574 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 577 transitions. Word has length 174 [2023-11-23 07:02:14,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:02:14,575 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 577 transitions. [2023-11-23 07:02:14,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-23 07:02:14,575 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 577 transitions. [2023-11-23 07:02:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-23 07:02:14,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:02:14,577 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:02:14,597 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 07:02:14,792 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 07:02:14,792 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:02:14,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:02:14,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2083717312, now seen corresponding path program 1 times [2023-11-23 07:02:14,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:02:14,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129267420] [2023-11-23 07:02:14,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:02:14,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:02:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:02:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:02:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:02:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:02:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:02:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:02:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:02:15,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:02:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:02:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:02:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:02:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:02:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:02:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:02:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 07:02:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 07:02:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 07:02:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 07:02:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-23 07:02:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-23 07:02:15,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:02:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129267420] [2023-11-23 07:02:15,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129267420] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:02:15,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700533693] [2023-11-23 07:02:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:02:15,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:02:15,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:02:15,765 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 07:02:15,769 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 07:02:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:16,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 07:02:16,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:02:16,406 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-23 07:02:16,407 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:02:16,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700533693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:02:16,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:02:16,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2023-11-23 07:02:16,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544260214] [2023-11-23 07:02:16,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:02:16,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:02:16,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:02:16,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:02:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:02:16,410 INFO L87 Difference]: Start difference. First operand 433 states and 577 transitions. Second operand has 9 states, 7 states have (on average 12.857142857142858) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 07:02:17,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:02:17,522 INFO L93 Difference]: Finished difference Result 803 states and 1071 transitions. [2023-11-23 07:02:17,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:02:17,523 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 12.857142857142858) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 174 [2023-11-23 07:02:17,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:02:17,526 INFO L225 Difference]: With dead ends: 803 [2023-11-23 07:02:17,526 INFO L226 Difference]: Without dead ends: 437 [2023-11-23 07:02:17,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:02:17,529 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 13 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:02:17,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1564 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 07:02:17,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-11-23 07:02:17,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 433. [2023-11-23 07:02:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 284 states have (on average 1.221830985915493) internal successors, (347), 291 states have internal predecessors, (347), 111 states have call successors, (111), 32 states have call predecessors, (111), 37 states have return successors, (117), 109 states have call predecessors, (117), 108 states have call successors, (117) [2023-11-23 07:02:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 575 transitions. [2023-11-23 07:02:17,573 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 575 transitions. Word has length 174 [2023-11-23 07:02:17,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:02:17,573 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 575 transitions. [2023-11-23 07:02:17,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 12.857142857142858) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 07:02:17,574 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 575 transitions. [2023-11-23 07:02:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-23 07:02:17,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:02:17,576 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:02:17,610 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 07:02:17,780 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 07:02:17,780 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:02:17,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:02:17,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1292378603, now seen corresponding path program 2 times [2023-11-23 07:02:17,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:02:17,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344545714] [2023-11-23 07:02:17,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:02:17,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:02:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:02:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:02:19,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:02:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:02:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:02:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:02:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:02:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:02:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:02:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:02:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:02:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:02:19,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:02:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 07:02:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 07:02:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 07:02:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 07:02:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 07:02:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-23 07:02:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,846 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 35 proven. 13 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-23 07:02:19,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:02:19,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344545714] [2023-11-23 07:02:19,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344545714] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:02:19,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807345318] [2023-11-23 07:02:19,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:02:19,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:02:19,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:02:19,848 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 07:02:19,872 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 07:02:20,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:02:20,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:02:20,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 3075 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-23 07:02:20,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:02:20,671 INFO L349 Elim1Store]: treesize reduction 57, result has 23.0 percent of original size [2023-11-23 07:02:20,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 30 [2023-11-23 07:02:20,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-23 07:02:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 110 proven. 54 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-23 07:02:21,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:02:21,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807345318] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:02:21,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:02:21,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 29 [2023-11-23 07:02:21,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627570926] [2023-11-23 07:02:21,983 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:02:21,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 07:02:21,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:02:21,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 07:02:21,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1292, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 07:02:21,986 INFO L87 Difference]: Start difference. First operand 433 states and 575 transitions. Second operand has 29 states, 28 states have (on average 4.535714285714286) internal successors, (127), 25 states have internal predecessors, (127), 8 states have call successors, (34), 8 states have call predecessors, (34), 6 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-23 07:02:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:02:35,356 INFO L93 Difference]: Finished difference Result 1672 states and 2234 transitions. [2023-11-23 07:02:35,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-23 07:02:35,357 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.535714285714286) internal successors, (127), 25 states have internal predecessors, (127), 8 states have call successors, (34), 8 states have call predecessors, (34), 6 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) Word has length 176 [2023-11-23 07:02:35,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:02:35,363 INFO L225 Difference]: With dead ends: 1672 [2023-11-23 07:02:35,363 INFO L226 Difference]: Without dead ends: 1278 [2023-11-23 07:02:35,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 257 SyntacticMatches, 12 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1445 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=860, Invalid=6111, Unknown=1, NotChecked=0, Total=6972 [2023-11-23 07:02:35,368 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 778 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 5298 mSolverCounterSat, 517 mSolverCounterUnsat, 70 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1092 SdHoareTripleChecker+Invalid, 5885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 5298 IncrementalHoareTripleChecker+Invalid, 70 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:02:35,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 1092 Invalid, 5885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 5298 Invalid, 70 Unknown, 0 Unchecked, 6.9s Time] [2023-11-23 07:02:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1278 states. [2023-11-23 07:02:35,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1278 to 1123. [2023-11-23 07:02:35,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 771 states have (on average 1.2282749675745785) internal successors, (947), 791 states have internal predecessors, (947), 261 states have call successors, (261), 73 states have call predecessors, (261), 90 states have return successors, (294), 258 states have call predecessors, (294), 253 states have call successors, (294) [2023-11-23 07:02:35,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1502 transitions. [2023-11-23 07:02:35,485 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1502 transitions. Word has length 176 [2023-11-23 07:02:35,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:02:35,486 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1502 transitions. [2023-11-23 07:02:35,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.535714285714286) internal successors, (127), 25 states have internal predecessors, (127), 8 states have call successors, (34), 8 states have call predecessors, (34), 6 states have return successors, (32), 6 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-23 07:02:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1502 transitions. [2023-11-23 07:02:35,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-23 07:02:35,488 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:02:35,488 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:02:35,521 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 07:02:35,704 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,SelfDestructingSolverStorable15 [2023-11-23 07:02:35,705 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:02:35,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:02:35,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1564105813, now seen corresponding path program 1 times [2023-11-23 07:02:35,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:02:35,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074926022] [2023-11-23 07:02:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:02:35,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:02:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:02:38,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:02:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:02:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:02:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:02:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:02:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:02:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:02:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:02:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:02:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:02:38,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:02:38,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:02:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 07:02:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 07:02:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 07:02:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 07:02:38,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:39,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 07:02:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:39,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-23 07:02:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 5 proven. 43 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-23 07:02:39,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:02:39,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074926022] [2023-11-23 07:02:39,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074926022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:02:39,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420556205] [2023-11-23 07:02:39,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:02:39,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:02:39,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:02:39,038 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 07:02:39,039 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 07:02:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:40,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 3075 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-23 07:02:40,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:02:40,340 INFO L349 Elim1Store]: treesize reduction 57, result has 23.0 percent of original size [2023-11-23 07:02:40,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 30 [2023-11-23 07:02:41,260 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:02:41,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2023-11-23 07:02:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 188 proven. 40 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-23 07:02:41,775 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:02:42,703 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 10 treesize of output 6 [2023-11-23 07:02:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-23 07:02:42,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420556205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:02:42,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:02:42,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 16] total 49 [2023-11-23 07:02:42,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943864821] [2023-11-23 07:02:42,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:02:42,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-23 07:02:42,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:02:42,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-23 07:02:42,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2182, Unknown=0, NotChecked=0, Total=2352 [2023-11-23 07:02:42,956 INFO L87 Difference]: Start difference. First operand 1123 states and 1502 transitions. Second operand has 49 states, 43 states have (on average 4.465116279069767) internal successors, (192), 43 states have internal predecessors, (192), 20 states have call successors, (61), 13 states have call predecessors, (61), 13 states have return successors, (57), 14 states have call predecessors, (57), 17 states have call successors, (57) [2023-11-23 07:03:17,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:03:22,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:03:24,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:03:29,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:03:33,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:03:35,499 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, 1] [2023-11-23 07:03:46,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:03:46,417 INFO L93 Difference]: Finished difference Result 2968 states and 3975 transitions. [2023-11-23 07:03:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-11-23 07:03:46,418 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 43 states have (on average 4.465116279069767) internal successors, (192), 43 states have internal predecessors, (192), 20 states have call successors, (61), 13 states have call predecessors, (61), 13 states have return successors, (57), 14 states have call predecessors, (57), 17 states have call successors, (57) Word has length 176 [2023-11-23 07:03:46,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:03:46,432 INFO L225 Difference]: With dead ends: 2968 [2023-11-23 07:03:46,433 INFO L226 Difference]: Without dead ends: 2273 [2023-11-23 07:03:46,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 379 SyntacticMatches, 12 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5183 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1758, Invalid=15012, Unknown=0, NotChecked=0, Total=16770 [2023-11-23 07:03:46,442 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 1429 mSDsluCounter, 3280 mSDsCounter, 0 mSdLazyCounter, 12951 mSolverCounterSat, 1197 mSolverCounterUnsat, 108 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 3474 SdHoareTripleChecker+Invalid, 14256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1197 IncrementalHoareTripleChecker+Valid, 12951 IncrementalHoareTripleChecker+Invalid, 108 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:03:46,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 3474 Invalid, 14256 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1197 Valid, 12951 Invalid, 108 Unknown, 0 Unchecked, 51.5s Time] [2023-11-23 07:03:46,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2273 states. [2023-11-23 07:03:46,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2273 to 1994. [2023-11-23 07:03:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1392 states have (on average 1.2155172413793103) internal successors, (1692), 1424 states have internal predecessors, (1692), 445 states have call successors, (445), 135 states have call predecessors, (445), 156 states have return successors, (507), 434 states have call predecessors, (507), 426 states have call successors, (507) [2023-11-23 07:03:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 2644 transitions. [2023-11-23 07:03:46,721 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 2644 transitions. Word has length 176 [2023-11-23 07:03:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:03:46,722 INFO L495 AbstractCegarLoop]: Abstraction has 1994 states and 2644 transitions. [2023-11-23 07:03:46,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 43 states have (on average 4.465116279069767) internal successors, (192), 43 states have internal predecessors, (192), 20 states have call successors, (61), 13 states have call predecessors, (61), 13 states have return successors, (57), 14 states have call predecessors, (57), 17 states have call successors, (57) [2023-11-23 07:03:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 2644 transitions. [2023-11-23 07:03:46,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-11-23 07:03:46,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:03:46,727 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:03:46,750 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 07:03:46,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:03:46,931 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:03:46,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:03:46,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1110485713, now seen corresponding path program 1 times [2023-11-23 07:03:46,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:03:46,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222195662] [2023-11-23 07:03:46,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:03:46,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:03:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:48,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:03:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:48,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:03:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:03:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:48,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:03:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:03:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:03:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:48,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:03:48,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:48,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:03:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:48,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:03:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:03:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:48,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:03:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:03:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:49,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:03:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:49,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:03:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:49,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:03:49,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:49,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 07:03:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:49,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 07:03:49,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:49,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 07:03:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 07:03:49,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:49,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 07:03:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:49,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-23 07:03:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:49,307 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 15 proven. 31 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-23 07:03:49,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:03:49,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222195662] [2023-11-23 07:03:49,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222195662] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:03:49,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627257397] [2023-11-23 07:03:49,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:03:49,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:03:49,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:03:49,309 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 07:03:49,310 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 07:03:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:03:50,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 3085 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-23 07:03:50,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:03:50,958 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 07:03:52,241 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 07:03:52,400 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-23 07:03:52,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:03:52,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627257397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:03:52,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:03:52,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [18] total 34 [2023-11-23 07:03:52,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558049289] [2023-11-23 07:03:52,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:03:52,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 07:03:52,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:03:52,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 07:03:52,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1006, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 07:03:52,403 INFO L87 Difference]: Start difference. First operand 1994 states and 2644 transitions. Second operand has 18 states, 15 states have (on average 5.733333333333333) internal successors, (86), 14 states have internal predecessors, (86), 7 states have call successors, (23), 5 states have call predecessors, (23), 6 states have return successors, (21), 6 states have call predecessors, (21), 7 states have call successors, (21) [2023-11-23 07:03:54,693 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 07:03:56,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:04:00,124 WARN L539 Checker$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 07:04:02,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:04:04,215 WARN L539 Checker$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 07:04:06,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:04:08,288 WARN L539 Checker$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 07:04:10,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:04:12,885 WARN L539 Checker$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 07:04:15,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:04:17,377 WARN L539 Checker$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 07:04:19,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:04:21,489 WARN L539 Checker$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 07:04:23,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:04:25,576 WARN L539 Checker$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] Killed by 15