./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_dynamic_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_append_dynamic_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 b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:46:17,377 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:46:17,450 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:46:17,456 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:46:17,457 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:46:17,482 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:46:17,483 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:46:17,483 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:46:17,484 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:46:17,487 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:46:17,487 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:46:17,488 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:46:17,489 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:46:17,490 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:46:17,490 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:46:17,490 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:46:17,490 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:46:17,491 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:46:17,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:46:17,491 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:46:17,491 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:46:17,492 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:46:17,492 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:46:17,492 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:46:17,493 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:46:17,493 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:46:17,493 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:46:17,493 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:46:17,494 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:46:17,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:46:17,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:46:17,495 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:46:17,495 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:46:17,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:46:17,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:46:17,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:46:17,496 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:46:17,496 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:46:17,496 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:46:17,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e17fda858e874821809b4efef78fd91cf6fdf1723d3ff0faf91ee901e13b86 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:46:17,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:46:17,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:46:17,757 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:46:17,758 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:46:17,759 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:46:17,760 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2023-11-23 06:46:18,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:46:19,346 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:46:19,347 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_dynamic_harness.i [2023-11-23 06:46:19,384 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5ef2949/8d8cec2bde904f64bcea1e4ac031b8eb/FLAG4969bba5e [2023-11-23 06:46:19,424 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5ef2949/8d8cec2bde904f64bcea1e4ac031b8eb [2023-11-23 06:46:19,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:46:19,429 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:46:19,431 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:46:19,431 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:46:19,435 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:46:19,436 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:46:19" (1/1) ... [2023-11-23 06:46:19,437 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340b13fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:19, skipping insertion in model container [2023-11-23 06:46:19,437 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:46:19" (1/1) ... [2023-11-23 06:46:19,530 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:46:19,728 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_append_dynamic_harness.i[4501,4514] [2023-11-23 06:46:19,736 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_append_dynamic_harness.i[4561,4574] [2023-11-23 06:46:20,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,309 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,311 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,314 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,315 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,323 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,325 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,326 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,330 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,592 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:46:20,594 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:46:20,595 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:46:20,597 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:46:20,602 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:46:20,602 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:46:20,603 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:46:20,603 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:46:20,604 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:46:20,606 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:46:20,708 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,708 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,768 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,774 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:46:20,857 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:46:20,867 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_append_dynamic_harness.i[4501,4514] [2023-11-23 06:46:20,877 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_append_dynamic_harness.i[4561,4574] [2023-11-23 06:46:20,906 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,906 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,907 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,907 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,908 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,916 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,917 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,917 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,917 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,955 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:46:20,956 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:46:20,956 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:46:20,957 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:46:20,957 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:46:20,957 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:46:20,958 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:46:20,958 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:46:20,958 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:46:20,959 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:46:20,993 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:20,993 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:21,025 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8297] [2023-11-23 06:46:21,027 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:21,027 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:46:21,034 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8783-8794] [2023-11-23 06:46:21,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:46:21,244 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,244 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,244 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,244 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,245 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,245 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,245 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,245 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,245 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,246 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,246 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,246 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,246 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,246 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,247 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,247 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,247 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,247 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:46:21,253 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:46:21,253 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21 WrapperNode [2023-11-23 06:46:21,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:46:21,254 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:46:21,254 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:46:21,254 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:46:21,259 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (1/1) ... [2023-11-23 06:46:21,339 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (1/1) ... [2023-11-23 06:46:21,398 INFO L138 Inliner]: procedures = 690, calls = 2640, calls flagged for inlining = 61, calls inlined = 11, statements flattened = 1066 [2023-11-23 06:46:21,399 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:46:21,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:46:21,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:46:21,400 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:46:21,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (1/1) ... [2023-11-23 06:46:21,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (1/1) ... [2023-11-23 06:46:21,414 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (1/1) ... [2023-11-23 06:46:21,495 INFO L188 MemorySlicer]: Split 589 memory accesses to 10 slices as follows [2, 43, 9, 256, 236, 8, 4, 5, 23, 3]. 43 percent of accesses are in the largest equivalence class. The 509 initializations are split as follows [2, 0, 5, 256, 236, 4, 2, 1, 0, 3]. The 8 writes are split as follows [0, 5, 1, 0, 0, 0, 0, 1, 1, 0]. [2023-11-23 06:46:21,495 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (1/1) ... [2023-11-23 06:46:21,496 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (1/1) ... [2023-11-23 06:46:21,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (1/1) ... [2023-11-23 06:46:21,544 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (1/1) ... [2023-11-23 06:46:21,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (1/1) ... [2023-11-23 06:46:21,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (1/1) ... [2023-11-23 06:46:21,581 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:46:21,586 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:46:21,587 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:46:21,587 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:46:21,588 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (1/1) ... [2023-11-23 06:46:21,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:46:21,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:46:21,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 06:46:21,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 06:46:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 06:46:21,685 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 06:46:21,685 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 06:46:21,686 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 06:46:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:46:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:46:21,686 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:46:21,686 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 06:46:21,687 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 06:46:21,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:46:21,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:46:21,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:46:21,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:46:21,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:46:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:46:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 06:46:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 06:46:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 06:46:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-23 06:46:21,688 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 06:46:21,688 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 06:46:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:46:21,689 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:46:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:46:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:46:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:46:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:46:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:46:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:46:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:46:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:46:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 06:46:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 06:46:21,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 06:46:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-23 06:46:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 06:46:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 06:46:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:46:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:46:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:46:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:46:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 06:46:21,691 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 06:46:21,691 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 06:46:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 06:46:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:46:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:46:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 06:46:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 06:46:21,692 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-23 06:46:21,692 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-23 06:46:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:46:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 06:46:21,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 06:46:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:46:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:46:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:46:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:46:21,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:46:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:46:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 06:46:21,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 06:46:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 06:46:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-23 06:46:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:46:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:46:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:46:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:46:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:46:21,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:46:21,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 06:46:21,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 06:46:21,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-23 06:46:21,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-23 06:46:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:46:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:46:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 06:46:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 06:46:21,697 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2023-11-23 06:46:21,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2023-11-23 06:46:21,698 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 06:46:21,698 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 06:46:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:46:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:46:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:46:21,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:46:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:46:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:46:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 06:46:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 06:46:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 06:46:21,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-23 06:46:21,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:46:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:46:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:46:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:46:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:46:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:46:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 06:46:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 06:46:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 06:46:21,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-23 06:46:21,992 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:46:21,994 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:46:22,734 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:46:22,820 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:46:22,820 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 06:46:22,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:46:22 BoogieIcfgContainer [2023-11-23 06:46:22,821 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:46:22,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:46:22,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:46:22,848 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:46:22,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:46:19" (1/3) ... [2023-11-23 06:46:22,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8c388e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:46:22, skipping insertion in model container [2023-11-23 06:46:22,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:46:21" (2/3) ... [2023-11-23 06:46:22,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a8c388e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:46:22, skipping insertion in model container [2023-11-23 06:46:22,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:46:22" (3/3) ... [2023-11-23 06:46:22,851 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_dynamic_harness.i [2023-11-23 06:46:22,865 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:46:22,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:46:22,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:46:22,909 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;@51afb83c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:46:22,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:46:22,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 225 states, 133 states have (on average 1.2781954887218046) internal successors, (170), 134 states have internal predecessors, (170), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-23 06:46:22,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-23 06:46:22,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:46:22,923 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 06:46:22,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:46:22,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:46:22,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1007271355, now seen corresponding path program 1 times [2023-11-23 06:46:22,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:46:22,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2834356] [2023-11-23 06:46:22,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:22,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:46:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:23,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:46:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:23,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:46:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 06:46:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:46:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 06:46:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:46:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:46:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:46:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:46:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:46:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 06:46:23,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:46:23,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2834356] [2023-11-23 06:46:23,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2834356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:46:23,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:46:23,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 06:46:23,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537371842] [2023-11-23 06:46:23,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:46:23,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 06:46:23,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:46:23,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 06:46:23,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 06:46:23,595 INFO L87 Difference]: Start difference. First operand has 225 states, 133 states have (on average 1.2781954887218046) internal successors, (170), 134 states have internal predecessors, (170), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:46:24,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:46:24,156 INFO L93 Difference]: Finished difference Result 453 states and 675 transitions. [2023-11-23 06:46:24,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:46:24,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 73 [2023-11-23 06:46:24,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:46:24,188 INFO L225 Difference]: With dead ends: 453 [2023-11-23 06:46:24,188 INFO L226 Difference]: Without dead ends: 233 [2023-11-23 06:46:24,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 06:46:24,210 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 94 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:46:24,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 271 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:46:24,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-23 06:46:24,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 223. [2023-11-23 06:46:24,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 132 states have (on average 1.25) internal successors, (165), 133 states have internal predecessors, (165), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-23 06:46:24,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 308 transitions. [2023-11-23 06:46:24,279 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 308 transitions. Word has length 73 [2023-11-23 06:46:24,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:46:24,279 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 308 transitions. [2023-11-23 06:46:24,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 06:46:24,280 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 308 transitions. [2023-11-23 06:46:24,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 06:46:24,287 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:46:24,287 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:46:24,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:46:24,288 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:46:24,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:46:24,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1919624211, now seen corresponding path program 1 times [2023-11-23 06:46:24,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:46:24,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888099364] [2023-11-23 06:46:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:24,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:46:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:24,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:24,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:46:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:24,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:24,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:46:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 06:46:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:24,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:46:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:24,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 06:46:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:46:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:25,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:46:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:25,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:46:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:46:25,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:46:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:25,040 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-23 06:46:25,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:46:25,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888099364] [2023-11-23 06:46:25,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888099364] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:46:25,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76064302] [2023-11-23 06:46:25,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:25,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:46:25,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:46:25,043 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:46:25,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 06:46:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:25,500 INFO L262 TraceCheckSpWp]: Trace formula consists of 2547 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:46:25,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:46:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 06:46:25,590 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:46:25,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76064302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:46:25,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:46:25,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-23 06:46:25,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372405425] [2023-11-23 06:46:25,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:46:25,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:46:25,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:46:25,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:46:25,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:46:25,593 INFO L87 Difference]: Start difference. First operand 223 states and 308 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 06:46:25,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:46:25,740 INFO L93 Difference]: Finished difference Result 439 states and 610 transitions. [2023-11-23 06:46:25,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:46:25,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 75 [2023-11-23 06:46:25,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:46:25,743 INFO L225 Difference]: With dead ends: 439 [2023-11-23 06:46:25,743 INFO L226 Difference]: Without dead ends: 225 [2023-11-23 06:46:25,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:46:25,745 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 87 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:46:25,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 963 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 06:46:25,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-23 06:46:25,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2023-11-23 06:46:25,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 133 states have (on average 1.2481203007518797) internal successors, (166), 135 states have internal predecessors, (166), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2023-11-23 06:46:25,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 314 transitions. [2023-11-23 06:46:25,761 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 314 transitions. Word has length 75 [2023-11-23 06:46:25,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:46:25,761 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 314 transitions. [2023-11-23 06:46:25,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 06:46:25,761 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 314 transitions. [2023-11-23 06:46:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 06:46:25,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:46:25,762 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:46:25,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 06:46:25,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:46:25,979 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:46:25,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:46:25,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1894483810, now seen corresponding path program 1 times [2023-11-23 06:46:25,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:46:25,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2388944] [2023-11-23 06:46:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:25,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:46:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:46:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:46:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:46:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:46:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 06:46:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:46:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:46:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:46:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:46:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:46:26,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-23 06:46:26,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:46:26,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2388944] [2023-11-23 06:46:26,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2388944] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:46:26,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504438478] [2023-11-23 06:46:26,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:26,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:46:26,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:46:26,404 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:46:26,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 06:46:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:26,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 2564 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:46:26,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:46:26,942 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 06:46:26,943 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:46:27,040 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-23 06:46:27,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504438478] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:46:27,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:46:27,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-23 06:46:27,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904627257] [2023-11-23 06:46:27,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:46:27,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:46:27,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:46:27,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:46:27,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:46:27,043 INFO L87 Difference]: Start difference. First operand 225 states and 314 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2023-11-23 06:46:27,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:46:27,834 INFO L93 Difference]: Finished difference Result 445 states and 622 transitions. [2023-11-23 06:46:27,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:46:27,834 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 81 [2023-11-23 06:46:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:46:27,836 INFO L225 Difference]: With dead ends: 445 [2023-11-23 06:46:27,836 INFO L226 Difference]: Without dead ends: 237 [2023-11-23 06:46:27,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:46:27,838 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 467 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:46:27,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 556 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 696 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 06:46:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-23 06:46:27,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 227. [2023-11-23 06:46:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 134 states have (on average 1.2462686567164178) internal successors, (167), 137 states have internal predecessors, (167), 72 states have call successors, (72), 18 states have call predecessors, (72), 20 states have return successors, (81), 71 states have call predecessors, (81), 71 states have call successors, (81) [2023-11-23 06:46:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 320 transitions. [2023-11-23 06:46:27,854 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 320 transitions. Word has length 81 [2023-11-23 06:46:27,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:46:27,854 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 320 transitions. [2023-11-23 06:46:27,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 7 states have call successors, (31), 4 states have call predecessors, (31), 5 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2023-11-23 06:46:27,854 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 320 transitions. [2023-11-23 06:46:27,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-23 06:46:27,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:46:27,855 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:46:27,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 06:46:28,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 06:46:28,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:46:28,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:46:28,074 INFO L85 PathProgramCache]: Analyzing trace with hash -814401187, now seen corresponding path program 1 times [2023-11-23 06:46:28,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:46:28,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129406029] [2023-11-23 06:46:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:28,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:46:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:46:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:46:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:46:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:46:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 06:46:28,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:46:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:46:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:46:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:46:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 06:46:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:28,533 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-23 06:46:28,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:46:28,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129406029] [2023-11-23 06:46:28,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129406029] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:46:28,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:46:28,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:46:28,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071379795] [2023-11-23 06:46:28,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:46:28,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:46:28,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:46:28,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:46:28,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:46:28,536 INFO L87 Difference]: Start difference. First operand 227 states and 320 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 06:46:29,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:46:29,309 INFO L93 Difference]: Finished difference Result 444 states and 620 transitions. [2023-11-23 06:46:29,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:46:29,309 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 83 [2023-11-23 06:46:29,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:46:29,312 INFO L225 Difference]: With dead ends: 444 [2023-11-23 06:46:29,312 INFO L226 Difference]: Without dead ends: 235 [2023-11-23 06:46:29,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:46:29,314 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 230 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:46:29,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 530 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 06:46:29,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2023-11-23 06:46:29,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 225. [2023-11-23 06:46:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 133 states have (on average 1.2406015037593985) internal successors, (165), 135 states have internal predecessors, (165), 72 states have call successors, (72), 18 states have call predecessors, (72), 19 states have return successors, (76), 71 states have call predecessors, (76), 71 states have call successors, (76) [2023-11-23 06:46:29,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 313 transitions. [2023-11-23 06:46:29,330 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 313 transitions. Word has length 83 [2023-11-23 06:46:29,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:46:29,330 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 313 transitions. [2023-11-23 06:46:29,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 06:46:29,331 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 313 transitions. [2023-11-23 06:46:29,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-23 06:46:29,331 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:46:29,332 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:46:29,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 06:46:29,332 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:46:29,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:46:29,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1804510536, now seen corresponding path program 1 times [2023-11-23 06:46:29,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:46:29,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156722634] [2023-11-23 06:46:29,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:29,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:46:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:46:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:46:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:46:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:46:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 06:46:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:46:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:46:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:46:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:46:29,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 06:46:29,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:29,761 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-23 06:46:29,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:46:29,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156722634] [2023-11-23 06:46:29,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156722634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:46:29,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:46:29,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:46:29,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481775469] [2023-11-23 06:46:29,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:46:29,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:46:29,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:46:29,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:46:29,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:46:29,763 INFO L87 Difference]: Start difference. First operand 225 states and 313 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 06:46:30,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:46:30,498 INFO L93 Difference]: Finished difference Result 437 states and 601 transitions. [2023-11-23 06:46:30,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:46:30,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 89 [2023-11-23 06:46:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:46:30,503 INFO L225 Difference]: With dead ends: 437 [2023-11-23 06:46:30,503 INFO L226 Difference]: Without dead ends: 233 [2023-11-23 06:46:30,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:46:30,507 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 220 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:46:30,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 559 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 06:46:30,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-23 06:46:30,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 223. [2023-11-23 06:46:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 132 states have (on average 1.2348484848484849) internal successors, (163), 133 states have internal predecessors, (163), 72 states have call successors, (72), 18 states have call predecessors, (72), 18 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-23 06:46:30,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 306 transitions. [2023-11-23 06:46:30,539 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 306 transitions. Word has length 89 [2023-11-23 06:46:30,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:46:30,540 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 306 transitions. [2023-11-23 06:46:30,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 06:46:30,541 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 306 transitions. [2023-11-23 06:46:30,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-23 06:46:30,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:46:30,547 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 06:46:30,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 06:46:30,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:46:30,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:46:30,547 INFO L85 PathProgramCache]: Analyzing trace with hash 992280451, now seen corresponding path program 1 times [2023-11-23 06:46:30,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:46:30,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637956816] [2023-11-23 06:46:30,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:30,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:46:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:31,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:46:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:31,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:46:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:46:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:46:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 06:46:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:46:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:46:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:46:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:46:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:46:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-23 06:46:31,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:46:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637956816] [2023-11-23 06:46:31,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637956816] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:46:31,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231512045] [2023-11-23 06:46:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:31,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:46:31,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:46:31,672 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:46:31,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 06:46:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:32,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-23 06:46:32,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:46:32,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:46:32,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:46:32,317 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 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-23 06:46:32,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-23 06:46:33,080 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 06:46:33,080 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:46:33,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231512045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:46:33,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:46:33,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2023-11-23 06:46:33,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021849231] [2023-11-23 06:46:33,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:46:33,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:46:33,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:46:33,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:46:33,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:46:33,081 INFO L87 Difference]: Start difference. First operand 223 states and 306 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 6 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-23 06:46:35,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:46:37,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:46:37,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:46:37,796 INFO L93 Difference]: Finished difference Result 519 states and 699 transitions. [2023-11-23 06:46:37,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:46:37,797 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 6 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 91 [2023-11-23 06:46:37,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:46:37,798 INFO L225 Difference]: With dead ends: 519 [2023-11-23 06:46:37,798 INFO L226 Difference]: Without dead ends: 325 [2023-11-23 06:46:37,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 88 SyntacticMatches, 19 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-23 06:46:37,799 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 94 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 18 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:46:37,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1385 Invalid, 367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 347 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2023-11-23 06:46:37,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-11-23 06:46:37,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 323. [2023-11-23 06:46:37,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 196 states have (on average 1.2295918367346939) internal successors, (241), 198 states have internal predecessors, (241), 99 states have call successors, (99), 27 states have call predecessors, (99), 27 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-23 06:46:37,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 437 transitions. [2023-11-23 06:46:37,816 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 437 transitions. Word has length 91 [2023-11-23 06:46:37,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:46:37,816 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 437 transitions. [2023-11-23 06:46:37,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 6 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-23 06:46:37,816 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 437 transitions. [2023-11-23 06:46:37,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 06:46:37,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:46:37,817 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 06:46:37,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 06:46:38,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:46:38,033 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:46:38,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:46:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash -399099903, now seen corresponding path program 1 times [2023-11-23 06:46:38,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:46:38,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560243082] [2023-11-23 06:46:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:38,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:46:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:38,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:46:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:46:38,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:46:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:46:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 06:46:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:46:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:46:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:46:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:46:38,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:46:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:46:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 06:46:38,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:46:38,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560243082] [2023-11-23 06:46:38,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560243082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:46:38,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:46:38,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 06:46:38,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766725397] [2023-11-23 06:46:38,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:46:38,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:46:38,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:46:38,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:46:38,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:46:38,346 INFO L87 Difference]: Start difference. First operand 323 states and 437 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 06:46:39,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:46:39,198 INFO L93 Difference]: Finished difference Result 480 states and 640 transitions. [2023-11-23 06:46:39,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:46:39,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 93 [2023-11-23 06:46:39,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:46:39,201 INFO L225 Difference]: With dead ends: 480 [2023-11-23 06:46:39,201 INFO L226 Difference]: Without dead ends: 354 [2023-11-23 06:46:39,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:46:39,202 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 184 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 939 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:46:39,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 856 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 939 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:46:39,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-23 06:46:39,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 323. [2023-11-23 06:46:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 197 states have (on average 1.2233502538071066) internal successors, (241), 199 states have internal predecessors, (241), 98 states have call successors, (98), 27 states have call predecessors, (98), 27 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-23 06:46:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 435 transitions. [2023-11-23 06:46:39,220 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 435 transitions. Word has length 93 [2023-11-23 06:46:39,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:46:39,220 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 435 transitions. [2023-11-23 06:46:39,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 06:46:39,220 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 435 transitions. [2023-11-23 06:46:39,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 06:46:39,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:46:39,221 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:46:39,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 06:46:39,222 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:46:39,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:46:39,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1876472440, now seen corresponding path program 1 times [2023-11-23 06:46:39,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:46:39,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587602365] [2023-11-23 06:46:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:39,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:46:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:46:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:46:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:46:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:46:40,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 06:46:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:46:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:46:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:46:40,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:46:40,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:46:40,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:46:40,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:40,673 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 06:46:40,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:46:40,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587602365] [2023-11-23 06:46:40,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587602365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:46:40,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:46:40,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 06:46:40,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715941992] [2023-11-23 06:46:40,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:46:40,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:46:40,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:46:40,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:46:40,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:46:40,676 INFO L87 Difference]: Start difference. First operand 323 states and 435 transitions. Second operand has 10 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:46:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:46:42,164 INFO L93 Difference]: Finished difference Result 393 states and 527 transitions. [2023-11-23 06:46:42,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:46:42,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 95 [2023-11-23 06:46:42,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:46:42,167 INFO L225 Difference]: With dead ends: 393 [2023-11-23 06:46:42,167 INFO L226 Difference]: Without dead ends: 391 [2023-11-23 06:46:42,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:46:42,168 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 236 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:46:42,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1035 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 06:46:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-11-23 06:46:42,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 356. [2023-11-23 06:46:42,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 217 states have (on average 1.2119815668202765) internal successors, (263), 220 states have internal predecessors, (263), 107 states have call successors, (107), 31 states have call predecessors, (107), 31 states have return successors, (105), 104 states have call predecessors, (105), 105 states have call successors, (105) [2023-11-23 06:46:42,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 475 transitions. [2023-11-23 06:46:42,192 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 475 transitions. Word has length 95 [2023-11-23 06:46:42,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:46:42,193 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 475 transitions. [2023-11-23 06:46:42,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:46:42,193 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 475 transitions. [2023-11-23 06:46:42,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 06:46:42,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:46:42,194 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:46:42,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 06:46:42,194 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:46:42,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:46:42,195 INFO L85 PathProgramCache]: Analyzing trace with hash -956365976, now seen corresponding path program 1 times [2023-11-23 06:46:42,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:46:42,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358622785] [2023-11-23 06:46:42,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:42,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:46:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:42,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:42,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:46:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:42,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:46:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:42,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:46:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:42,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:46:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:42,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:46:42,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:42,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:46:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:42,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:46:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:43,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:46:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:43,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:46:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:46:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:43,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:46:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:43,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 06:46:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:43,060 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-23 06:46:43,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:46:43,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358622785] [2023-11-23 06:46:43,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358622785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:46:43,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897686468] [2023-11-23 06:46:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:43,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:46:43,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:46:43,062 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:46:43,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 06:46:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:46:43,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 2603 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 06:46:43,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:46:43,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:46:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 06:46:44,111 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:46:44,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897686468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:46:44,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:46:44,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 20 [2023-11-23 06:46:44,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943519041] [2023-11-23 06:46:44,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:46:44,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:46:44,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:46:44,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:46:44,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:46:44,113 INFO L87 Difference]: Start difference. First operand 356 states and 475 transitions. Second operand has 12 states, 10 states have (on average 6.2) internal successors, (62), 11 states have internal predecessors, (62), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-23 06:46:46,493 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 06:46:49,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:46:51,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:46:54,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:46:56,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:46:58,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:00,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:00,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:00,547 INFO L93 Difference]: Finished difference Result 813 states and 1080 transitions. [2023-11-23 06:47:00,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:47:00,548 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.2) internal successors, (62), 11 states have internal predecessors, (62), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 95 [2023-11-23 06:47:00,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:00,550 INFO L225 Difference]: With dead ends: 813 [2023-11-23 06:47:00,550 INFO L226 Difference]: Without dead ends: 467 [2023-11-23 06:47:00,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 100 SyntacticMatches, 10 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2023-11-23 06:47:00,552 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 298 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 43 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:00,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 1782 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1384 Invalid, 7 Unknown, 0 Unchecked, 16.2s Time] [2023-11-23 06:47:00,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-11-23 06:47:00,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 454. [2023-11-23 06:47:00,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 281 states have (on average 1.206405693950178) internal successors, (339), 286 states have internal predecessors, (339), 129 states have call successors, (129), 42 states have call predecessors, (129), 43 states have return successors, (130), 125 states have call predecessors, (130), 126 states have call successors, (130) [2023-11-23 06:47:00,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 598 transitions. [2023-11-23 06:47:00,592 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 598 transitions. Word has length 95 [2023-11-23 06:47:00,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:00,593 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 598 transitions. [2023-11-23 06:47:00,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.2) internal successors, (62), 11 states have internal predecessors, (62), 5 states have call successors, (14), 3 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-23 06:47:00,593 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 598 transitions. [2023-11-23 06:47:00,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 06:47:00,597 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:00,597 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:00,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 06:47:00,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:00,803 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:00,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:00,803 INFO L85 PathProgramCache]: Analyzing trace with hash 183348520, now seen corresponding path program 1 times [2023-11-23 06:47:00,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:00,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127543958] [2023-11-23 06:47:00,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:00,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:47:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:01,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:47:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 06:47:01,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:47:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:47:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 06:47:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:47:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:47:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:47:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:47:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,497 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 06:47:01,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:01,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127543958] [2023-11-23 06:47:01,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127543958] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:01,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690347874] [2023-11-23 06:47:01,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:01,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:01,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:01,499 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:47:01,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 06:47:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:01,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 2617 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:47:01,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 06:47:02,003 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:47:02,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690347874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:02,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:47:02,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2023-11-23 06:47:02,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892711914] [2023-11-23 06:47:02,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:02,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:47:02,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:02,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:47:02,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:47:02,005 INFO L87 Difference]: Start difference. First operand 454 states and 598 transitions. Second operand has 9 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 06:47:02,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:02,456 INFO L93 Difference]: Finished difference Result 863 states and 1144 transitions. [2023-11-23 06:47:02,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:47:02,457 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 103 [2023-11-23 06:47:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:02,460 INFO L225 Difference]: With dead ends: 863 [2023-11-23 06:47:02,460 INFO L226 Difference]: Without dead ends: 466 [2023-11-23 06:47:02,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:47:02,462 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 13 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2133 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:02,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2133 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:47:02,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2023-11-23 06:47:02,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 462. [2023-11-23 06:47:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 287 states have (on average 1.2020905923344947) internal successors, (345), 294 states have internal predecessors, (345), 129 states have call successors, (129), 42 states have call predecessors, (129), 45 states have return successors, (139), 125 states have call predecessors, (139), 126 states have call successors, (139) [2023-11-23 06:47:02,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 613 transitions. [2023-11-23 06:47:02,494 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 613 transitions. Word has length 103 [2023-11-23 06:47:02,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:02,495 INFO L495 AbstractCegarLoop]: Abstraction has 462 states and 613 transitions. [2023-11-23 06:47:02,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 06:47:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 613 transitions. [2023-11-23 06:47:02,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-23 06:47:02,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:02,497 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 06:47:02,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-23 06:47:02,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 06:47:02,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:02,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:02,713 INFO L85 PathProgramCache]: Analyzing trace with hash -493404595, now seen corresponding path program 1 times [2023-11-23 06:47:02,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:02,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452024845] [2023-11-23 06:47:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:02,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:02,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:47:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:47:02,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 06:47:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:47:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:47:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 06:47:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:47:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 06:47:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 06:47:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:47:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:02,999 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 06:47:02,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:03,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452024845] [2023-11-23 06:47:03,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452024845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:03,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:47:03,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:47:03,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190120155] [2023-11-23 06:47:03,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:03,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:47:03,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:03,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:47:03,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:47:03,003 INFO L87 Difference]: Start difference. First operand 462 states and 613 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:47:03,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:03,684 INFO L93 Difference]: Finished difference Result 923 states and 1238 transitions. [2023-11-23 06:47:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:47:03,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2023-11-23 06:47:03,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:03,687 INFO L225 Difference]: With dead ends: 923 [2023-11-23 06:47:03,687 INFO L226 Difference]: Without dead ends: 490 [2023-11-23 06:47:03,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:47:03,690 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 109 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:03,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 578 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:47:03,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-11-23 06:47:03,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 468. [2023-11-23 06:47:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 293 states have (on average 1.1979522184300342) internal successors, (351), 300 states have internal predecessors, (351), 129 states have call successors, (129), 42 states have call predecessors, (129), 45 states have return successors, (139), 125 states have call predecessors, (139), 126 states have call successors, (139) [2023-11-23 06:47:03,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 619 transitions. [2023-11-23 06:47:03,719 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 619 transitions. Word has length 105 [2023-11-23 06:47:03,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:03,719 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 619 transitions. [2023-11-23 06:47:03,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:47:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 619 transitions. [2023-11-23 06:47:03,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-23 06:47:03,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:03,721 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:03,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 06:47:03,721 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:03,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:03,722 INFO L85 PathProgramCache]: Analyzing trace with hash 535954703, now seen corresponding path program 1 times [2023-11-23 06:47:03,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:03,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987986544] [2023-11-23 06:47:03,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:03,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:47:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:47:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 06:47:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:47:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:47:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 06:47:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:47:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 06:47:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 06:47:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:47:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 06:47:04,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:04,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987986544] [2023-11-23 06:47:04,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987986544] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:04,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160096855] [2023-11-23 06:47:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:04,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:04,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:04,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:47:04,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 06:47:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:04,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 2627 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:47:04,883 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:04,901 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 06:47:04,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:47:04,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160096855] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:04,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:47:04,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-23 06:47:04,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540247908] [2023-11-23 06:47:04,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:04,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:47:04,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:04,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:47:04,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:47:04,903 INFO L87 Difference]: Start difference. First operand 468 states and 619 transitions. Second operand has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 06:47:05,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:05,375 INFO L93 Difference]: Finished difference Result 911 states and 1208 transitions. [2023-11-23 06:47:05,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:47:05,375 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 105 [2023-11-23 06:47:05,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:05,377 INFO L225 Difference]: With dead ends: 911 [2023-11-23 06:47:05,378 INFO L226 Difference]: Without dead ends: 472 [2023-11-23 06:47:05,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:47:05,379 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 13 mSDsluCounter, 1862 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:05,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2135 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:47:05,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2023-11-23 06:47:05,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 468. [2023-11-23 06:47:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 293 states have (on average 1.1979522184300342) internal successors, (351), 300 states have internal predecessors, (351), 129 states have call successors, (129), 42 states have call predecessors, (129), 45 states have return successors, (137), 125 states have call predecessors, (137), 126 states have call successors, (137) [2023-11-23 06:47:05,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 617 transitions. [2023-11-23 06:47:05,406 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 617 transitions. Word has length 105 [2023-11-23 06:47:05,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:05,407 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 617 transitions. [2023-11-23 06:47:05,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 06:47:05,407 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 617 transitions. [2023-11-23 06:47:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 06:47:05,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:05,408 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:05,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 06:47:05,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:05,624 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:05,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:05,624 INFO L85 PathProgramCache]: Analyzing trace with hash 372045000, now seen corresponding path program 1 times [2023-11-23 06:47:05,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:05,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466165800] [2023-11-23 06:47:05,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:05,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:47:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:47:06,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:47:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:47:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:47:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:47:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:47:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:47:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:47:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:47:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 06:47:06,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:06,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466165800] [2023-11-23 06:47:06,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466165800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:06,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487183937] [2023-11-23 06:47:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:06,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:06,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:06,194 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:47:06,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 06:47:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:07,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 2637 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:47:07,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 06:47:07,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:47:07,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487183937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:07,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:47:07,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-11-23 06:47:07,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602076467] [2023-11-23 06:47:07,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:07,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:47:07,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:07,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:47:07,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:47:07,112 INFO L87 Difference]: Start difference. First operand 468 states and 617 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:47:07,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:07,659 INFO L93 Difference]: Finished difference Result 945 states and 1276 transitions. [2023-11-23 06:47:07,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:47:07,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2023-11-23 06:47:07,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:07,662 INFO L225 Difference]: With dead ends: 945 [2023-11-23 06:47:07,662 INFO L226 Difference]: Without dead ends: 506 [2023-11-23 06:47:07,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:47:07,664 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 33 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:07,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1060 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:47:07,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2023-11-23 06:47:07,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 483. [2023-11-23 06:47:07,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 308 states have (on average 1.2045454545454546) internal successors, (371), 315 states have internal predecessors, (371), 129 states have call successors, (129), 42 states have call predecessors, (129), 45 states have return successors, (137), 125 states have call predecessors, (137), 126 states have call successors, (137) [2023-11-23 06:47:07,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 637 transitions. [2023-11-23 06:47:07,693 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 637 transitions. Word has length 107 [2023-11-23 06:47:07,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:07,693 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 637 transitions. [2023-11-23 06:47:07,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:47:07,693 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 637 transitions. [2023-11-23 06:47:07,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 06:47:07,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:07,694 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:07,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 06:47:07,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:07,908 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:07,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:07,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1890488072, now seen corresponding path program 1 times [2023-11-23 06:47:07,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:07,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819835550] [2023-11-23 06:47:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:07,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:08,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:47:08,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:47:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:47:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:47:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:47:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:47:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:47:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:47:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:47:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:47:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 06:47:08,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:08,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819835550] [2023-11-23 06:47:08,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819835550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:08,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:47:08,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:47:08,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556223475] [2023-11-23 06:47:08,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:08,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:47:08,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:08,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:47:08,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:47:08,137 INFO L87 Difference]: Start difference. First operand 483 states and 637 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:47:08,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:08,760 INFO L93 Difference]: Finished difference Result 990 states and 1323 transitions. [2023-11-23 06:47:08,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:47:08,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 107 [2023-11-23 06:47:08,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:08,763 INFO L225 Difference]: With dead ends: 990 [2023-11-23 06:47:08,763 INFO L226 Difference]: Without dead ends: 536 [2023-11-23 06:47:08,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:47:08,766 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 120 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:08,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 574 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:47:08,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2023-11-23 06:47:08,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 483. [2023-11-23 06:47:08,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 308 states have (on average 1.1948051948051948) internal successors, (368), 315 states have internal predecessors, (368), 129 states have call successors, (129), 42 states have call predecessors, (129), 45 states have return successors, (137), 125 states have call predecessors, (137), 126 states have call successors, (137) [2023-11-23 06:47:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 634 transitions. [2023-11-23 06:47:08,794 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 634 transitions. Word has length 107 [2023-11-23 06:47:08,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:08,794 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 634 transitions. [2023-11-23 06:47:08,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:47:08,795 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 634 transitions. [2023-11-23 06:47:08,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 06:47:08,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:08,796 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:08,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 06:47:08,796 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:08,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:08,796 INFO L85 PathProgramCache]: Analyzing trace with hash -414074552, now seen corresponding path program 1 times [2023-11-23 06:47:08,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:08,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065030641] [2023-11-23 06:47:08,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:08,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:47:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:09,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:47:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:47:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:47:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:47:09,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:47:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:47:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:47:09,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:47:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:47:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-23 06:47:09,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:09,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065030641] [2023-11-23 06:47:09,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065030641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:09,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398281008] [2023-11-23 06:47:09,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:09,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:09,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:09,509 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:47:09,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 06:47:10,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:10,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 2621 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-23 06:47:10,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:10,717 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 72 treesize of output 52 [2023-11-23 06:47:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 41 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 06:47:10,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:47:10,826 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 28 treesize of output 16 [2023-11-23 06:47:10,860 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 06:47:10,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2023-11-23 06:47:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-23 06:47:10,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398281008] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:47:10,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:47:10,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 16 [2023-11-23 06:47:10,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371275392] [2023-11-23 06:47:10,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:47:10,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 06:47:10,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:10,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 06:47:10,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:47:10,879 INFO L87 Difference]: Start difference. First operand 483 states and 634 transitions. Second operand has 16 states, 16 states have (on average 5.6875) internal successors, (91), 13 states have internal predecessors, (91), 7 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-11-23 06:47:13,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:13,315 INFO L93 Difference]: Finished difference Result 1214 states and 1594 transitions. [2023-11-23 06:47:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 06:47:13,316 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 13 states have internal predecessors, (91), 7 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) Word has length 107 [2023-11-23 06:47:13,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:13,320 INFO L225 Difference]: With dead ends: 1214 [2023-11-23 06:47:13,320 INFO L226 Difference]: Without dead ends: 794 [2023-11-23 06:47:13,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 220 SyntacticMatches, 16 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=764, Unknown=0, NotChecked=0, Total=930 [2023-11-23 06:47:13,325 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 349 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 2047 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 2047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:13,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 1288 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 2047 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 06:47:13,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2023-11-23 06:47:13,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 759. [2023-11-23 06:47:13,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 490 states have (on average 1.1693877551020408) internal successors, (573), 503 states have internal predecessors, (573), 195 states have call successors, (195), 65 states have call predecessors, (195), 73 states have return successors, (218), 190 states have call predecessors, (218), 189 states have call successors, (218) [2023-11-23 06:47:13,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 986 transitions. [2023-11-23 06:47:13,393 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 986 transitions. Word has length 107 [2023-11-23 06:47:13,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:13,393 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 986 transitions. [2023-11-23 06:47:13,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.6875) internal successors, (91), 13 states have internal predecessors, (91), 7 states have call successors, (22), 4 states have call predecessors, (22), 3 states have return successors, (20), 6 states have call predecessors, (20), 6 states have call successors, (20) [2023-11-23 06:47:13,393 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 986 transitions. [2023-11-23 06:47:13,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 06:47:13,395 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:13,395 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:13,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 06:47:13,610 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,SelfDestructingSolverStorable14 [2023-11-23 06:47:13,611 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:13,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:13,611 INFO L85 PathProgramCache]: Analyzing trace with hash -332301353, now seen corresponding path program 1 times [2023-11-23 06:47:13,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:13,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622969597] [2023-11-23 06:47:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:13,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:13,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:47:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:47:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:47:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:47:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:47:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:47:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:47:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:47:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:47:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:47:14,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:47:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:47:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 06:47:14,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:14,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622969597] [2023-11-23 06:47:14,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622969597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:14,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:47:14,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 06:47:14,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305403310] [2023-11-23 06:47:14,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:14,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:47:14,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:14,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:47:14,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:47:14,778 INFO L87 Difference]: Start difference. First operand 759 states and 986 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:47:15,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:15,905 INFO L93 Difference]: Finished difference Result 813 states and 1055 transitions. [2023-11-23 06:47:15,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:47:15,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 116 [2023-11-23 06:47:15,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:15,909 INFO L225 Difference]: With dead ends: 813 [2023-11-23 06:47:15,909 INFO L226 Difference]: Without dead ends: 811 [2023-11-23 06:47:15,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:47:15,910 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 198 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 1217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:15,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 766 Invalid, 1217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 06:47:15,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-11-23 06:47:15,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 775. [2023-11-23 06:47:15,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 502 states have (on average 1.1653386454183268) internal successors, (585), 515 states have internal predecessors, (585), 195 states have call successors, (195), 69 states have call predecessors, (195), 77 states have return successors, (218), 190 states have call predecessors, (218), 189 states have call successors, (218) [2023-11-23 06:47:15,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 998 transitions. [2023-11-23 06:47:15,975 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 998 transitions. Word has length 116 [2023-11-23 06:47:15,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:15,975 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 998 transitions. [2023-11-23 06:47:15,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:47:15,976 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 998 transitions. [2023-11-23 06:47:15,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 06:47:15,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:15,977 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:15,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 06:47:15,978 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:15,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:15,978 INFO L85 PathProgramCache]: Analyzing trace with hash -825268168, now seen corresponding path program 1 times [2023-11-23 06:47:15,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:15,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286187974] [2023-11-23 06:47:15,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:15,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:47:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:47:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:47:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:47:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:47:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:47:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:47:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 06:47:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:47:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:47:16,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:16,629 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 06:47:16,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:16,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286187974] [2023-11-23 06:47:16,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286187974] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:16,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286982801] [2023-11-23 06:47:16,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:16,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:16,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:16,631 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:47:16,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 06:47:17,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:17,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 2645 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:47:17,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 06:47:17,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:47:17,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286982801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:17,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:47:17,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2023-11-23 06:47:17,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652770188] [2023-11-23 06:47:17,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:17,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:47:17,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:17,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:47:17,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:47:17,131 INFO L87 Difference]: Start difference. First operand 775 states and 998 transitions. Second operand has 9 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:47:17,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:17,601 INFO L93 Difference]: Finished difference Result 1308 states and 1688 transitions. [2023-11-23 06:47:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:47:17,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2023-11-23 06:47:17,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:17,605 INFO L225 Difference]: With dead ends: 1308 [2023-11-23 06:47:17,605 INFO L226 Difference]: Without dead ends: 787 [2023-11-23 06:47:17,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:47:17,607 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 13 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:17,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2175 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:47:17,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2023-11-23 06:47:17,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 783. [2023-11-23 06:47:17,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 508 states have (on average 1.1633858267716535) internal successors, (591), 523 states have internal predecessors, (591), 195 states have call successors, (195), 69 states have call predecessors, (195), 79 states have return successors, (226), 190 states have call predecessors, (226), 189 states have call successors, (226) [2023-11-23 06:47:17,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1012 transitions. [2023-11-23 06:47:17,660 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1012 transitions. Word has length 115 [2023-11-23 06:47:17,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:17,661 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 1012 transitions. [2023-11-23 06:47:17,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.285714285714286) internal successors, (58), 8 states have internal predecessors, (58), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:47:17,661 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1012 transitions. [2023-11-23 06:47:17,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 06:47:17,662 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:17,662 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:17,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 06:47:17,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 06:47:17,876 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:17,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:17,877 INFO L85 PathProgramCache]: Analyzing trace with hash -13249325, now seen corresponding path program 1 times [2023-11-23 06:47:17,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:17,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851634348] [2023-11-23 06:47:17,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:17,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:17,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:47:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:47:18,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:47:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:47:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:47:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:47:18,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:47:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 06:47:18,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:47:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:47:18,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 06:47:18,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:18,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851634348] [2023-11-23 06:47:18,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851634348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:18,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767670284] [2023-11-23 06:47:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:18,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:18,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:18,491 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:47:18,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 06:47:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:18,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-23 06:47:18,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:21,191 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_buf_append_dynamic_~from#1.offset_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_~from#1.base_BEFORE_CALL_9| Int)) (not (= (select (select |c_#memory_$Pointer$#8.base| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~from#1.base_BEFORE_CALL_9|) (+ 8 |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~from#1.offset_BEFORE_CALL_9|)) 0))) (exists ((|v_ULTIMATE.start_aws_byte_buf_append_dynamic_~from#1.offset_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_aws_byte_buf_append_dynamic_~from#1.base_BEFORE_CALL_9| Int)) (not (= (select (select |c_#memory_$Pointer$#8.offset| |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~from#1.base_BEFORE_CALL_9|) (+ 8 |v_ULTIMATE.start_aws_byte_buf_append_dynamic_~from#1.offset_BEFORE_CALL_9|)) 0)))) is different from true [2023-11-23 06:47:21,261 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 31 treesize of output 19 [2023-11-23 06:47:21,263 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 25 treesize of output 13 [2023-11-23 06:47:21,318 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 29 trivial. 3 not checked. [2023-11-23 06:47:21,318 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:47:21,576 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 06:47:21,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2023-11-23 06:47:21,584 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-23 06:47:21,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2023-11-23 06:47:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-23 06:47:21,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767670284] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:21,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:47:21,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10, 19] total 30 [2023-11-23 06:47:21,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206840287] [2023-11-23 06:47:21,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:21,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:47:21,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:21,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:47:21,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=750, Unknown=1, NotChecked=54, Total=870 [2023-11-23 06:47:21,658 INFO L87 Difference]: Start difference. First operand 783 states and 1012 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:47:22,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:22,409 INFO L93 Difference]: Finished difference Result 829 states and 1067 transitions. [2023-11-23 06:47:22,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:47:22,410 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2023-11-23 06:47:22,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:22,413 INFO L225 Difference]: With dead ends: 829 [2023-11-23 06:47:22,413 INFO L226 Difference]: Without dead ends: 827 [2023-11-23 06:47:22,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=91, Invalid=1034, Unknown=1, NotChecked=64, Total=1190 [2023-11-23 06:47:22,414 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 45 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 2527 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:22,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 2527 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:47:22,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-11-23 06:47:22,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 797. [2023-11-23 06:47:22,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 520 states have (on average 1.1653846153846155) internal successors, (606), 535 states have internal predecessors, (606), 195 states have call successors, (195), 71 states have call predecessors, (195), 81 states have return successors, (225), 190 states have call predecessors, (225), 189 states have call successors, (225) [2023-11-23 06:47:22,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1026 transitions. [2023-11-23 06:47:22,468 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1026 transitions. Word has length 117 [2023-11-23 06:47:22,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:22,468 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1026 transitions. [2023-11-23 06:47:22,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 9 states have internal predecessors, (62), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:47:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1026 transitions. [2023-11-23 06:47:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 06:47:22,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:22,470 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:22,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-23 06:47:22,684 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,SelfDestructingSolverStorable17 [2023-11-23 06:47:22,685 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:22,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1262722363, now seen corresponding path program 1 times [2023-11-23 06:47:22,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:22,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165675218] [2023-11-23 06:47:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:22,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:23,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:47:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:23,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:23,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:47:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:47:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:47:24,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:47:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:47:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:47:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:47:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:47:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:47:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:47:24,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:47:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:47:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 06:47:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-23 06:47:24,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:24,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165675218] [2023-11-23 06:47:24,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165675218] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:24,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221265531] [2023-11-23 06:47:24,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:24,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:24,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:24,081 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:47:24,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 06:47:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:24,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-23 06:47:24,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:24,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:47:24,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:47:26,697 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 25 treesize of output 13 [2023-11-23 06:47:26,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-23 06:47:26,806 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:47:26,806 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 67 treesize of output 39 [2023-11-23 06:47:26,869 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 34 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 06:47:26,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:47:27,005 INFO L349 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2023-11-23 06:47:27,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 93 treesize of output 92 [2023-11-23 06:47:27,403 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 06:47:27,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221265531] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:27,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:47:27,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 23] total 41 [2023-11-23 06:47:27,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379835332] [2023-11-23 06:47:27,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:27,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:47:27,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:27,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:47:27,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1536, Unknown=0, NotChecked=0, Total=1640 [2023-11-23 06:47:27,406 INFO L87 Difference]: Start difference. First operand 797 states and 1026 transitions. Second operand has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 06:47:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:27,980 INFO L93 Difference]: Finished difference Result 835 states and 1075 transitions. [2023-11-23 06:47:27,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:47:27,981 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 123 [2023-11-23 06:47:27,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:27,984 INFO L225 Difference]: With dead ends: 835 [2023-11-23 06:47:27,984 INFO L226 Difference]: Without dead ends: 833 [2023-11-23 06:47:27,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 232 SyntacticMatches, 17 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=122, Invalid=1858, Unknown=0, NotChecked=0, Total=1980 [2023-11-23 06:47:27,985 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 35 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2089 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:27,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2089 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:47:27,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-11-23 06:47:28,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 813. [2023-11-23 06:47:28,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 532 states have (on average 1.1616541353383458) internal successors, (618), 547 states have internal predecessors, (618), 195 states have call successors, (195), 75 states have call predecessors, (195), 85 states have return successors, (225), 190 states have call predecessors, (225), 189 states have call successors, (225) [2023-11-23 06:47:28,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 1038 transitions. [2023-11-23 06:47:28,035 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 1038 transitions. Word has length 123 [2023-11-23 06:47:28,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:28,035 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 1038 transitions. [2023-11-23 06:47:28,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 06:47:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 1038 transitions. [2023-11-23 06:47:28,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 06:47:28,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:28,037 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:28,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-23 06:47:28,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:28,253 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:28,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:28,253 INFO L85 PathProgramCache]: Analyzing trace with hash -2090841002, now seen corresponding path program 1 times [2023-11-23 06:47:28,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:28,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576954305] [2023-11-23 06:47:28,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:28,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:47:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:28,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:47:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:47:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:47:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:47:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:47:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:47:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 06:47:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:47:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:47:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 06:47:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 06:47:28,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:28,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576954305] [2023-11-23 06:47:28,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576954305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:28,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698972177] [2023-11-23 06:47:28,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:28,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:28,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:28,855 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:47:28,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 06:47:29,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:29,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 2663 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-23 06:47:29,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:29,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:47:29,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:47:29,919 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 06:47:29,919 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:47:29,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698972177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:29,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:47:29,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2023-11-23 06:47:29,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603211942] [2023-11-23 06:47:29,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:29,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:47:29,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:29,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:47:29,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2023-11-23 06:47:29,922 INFO L87 Difference]: Start difference. First operand 813 states and 1038 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 06:47:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:32,426 INFO L93 Difference]: Finished difference Result 2218 states and 2855 transitions. [2023-11-23 06:47:32,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 06:47:32,427 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 123 [2023-11-23 06:47:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:32,438 INFO L225 Difference]: With dead ends: 2218 [2023-11-23 06:47:32,439 INFO L226 Difference]: Without dead ends: 1633 [2023-11-23 06:47:32,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 133 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2023-11-23 06:47:32,443 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 314 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 1659 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:32,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 1659 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-23 06:47:32,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2023-11-23 06:47:32,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1330. [2023-11-23 06:47:32,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 876 states have (on average 1.1712328767123288) internal successors, (1026), 904 states have internal predecessors, (1026), 318 states have call successors, (318), 117 states have call predecessors, (318), 135 states have return successors, (384), 308 states have call predecessors, (384), 309 states have call successors, (384) [2023-11-23 06:47:32,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 1728 transitions. [2023-11-23 06:47:32,583 INFO L78 Accepts]: Start accepts. Automaton has 1330 states and 1728 transitions. Word has length 123 [2023-11-23 06:47:32,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:32,584 INFO L495 AbstractCegarLoop]: Abstraction has 1330 states and 1728 transitions. [2023-11-23 06:47:32,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 11 states have internal predecessors, (86), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 06:47:32,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1330 states and 1728 transitions. [2023-11-23 06:47:32,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 06:47:32,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:32,586 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:32,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 06:47:32,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:32,801 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:32,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1389241128, now seen corresponding path program 1 times [2023-11-23 06:47:32,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:32,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047421830] [2023-11-23 06:47:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:32,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:32,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:47:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:32,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:32,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:32,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:32,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:47:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:32,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:47:32,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:32,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:47:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:32,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:47:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:32,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 06:47:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:47:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:32,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 06:47:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:32,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:47:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:33,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:47:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 06:47:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 06:47:33,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:33,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047421830] [2023-11-23 06:47:33,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047421830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:33,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:47:33,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:47:33,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689860496] [2023-11-23 06:47:33,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:33,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:47:33,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:33,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:47:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:47:33,015 INFO L87 Difference]: Start difference. First operand 1330 states and 1728 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:47:33,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:33,612 INFO L93 Difference]: Finished difference Result 2216 states and 2862 transitions. [2023-11-23 06:47:33,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:47:33,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 123 [2023-11-23 06:47:33,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:33,617 INFO L225 Difference]: With dead ends: 2216 [2023-11-23 06:47:33,618 INFO L226 Difference]: Without dead ends: 1118 [2023-11-23 06:47:33,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:47:33,621 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 99 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:33,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 574 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:47:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2023-11-23 06:47:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 1081. [2023-11-23 06:47:33,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 717 states have (on average 1.1534170153417016) internal successors, (827), 739 states have internal predecessors, (827), 251 states have call successors, (251), 98 states have call predecessors, (251), 112 states have return successors, (288), 243 states have call predecessors, (288), 243 states have call successors, (288) [2023-11-23 06:47:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1366 transitions. [2023-11-23 06:47:33,698 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1366 transitions. Word has length 123 [2023-11-23 06:47:33,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:33,698 INFO L495 AbstractCegarLoop]: Abstraction has 1081 states and 1366 transitions. [2023-11-23 06:47:33,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:47:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1366 transitions. [2023-11-23 06:47:33,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 06:47:33,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:33,700 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:33,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 06:47:33,700 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:33,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:33,701 INFO L85 PathProgramCache]: Analyzing trace with hash 118647326, now seen corresponding path program 1 times [2023-11-23 06:47:33,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:33,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27929655] [2023-11-23 06:47:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:33,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:47:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:47:35,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:47:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:47:35,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:47:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:47:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:47:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:47:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:47:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:47:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:35,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 06:47:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:36,055 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 13 proven. 27 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 06:47:36,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:36,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27929655] [2023-11-23 06:47:36,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27929655] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:36,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443726387] [2023-11-23 06:47:36,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:36,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:36,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:36,057 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:47:36,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 06:47:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:37,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 2673 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-23 06:47:37,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:37,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-23 06:47:38,035 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 34 proven. 27 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 06:47:38,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:47:38,272 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 06:47:38,335 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 06:47:38,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2023-11-23 06:47:38,347 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 06:47:38,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443726387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:47:38,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:47:38,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 28 [2023-11-23 06:47:38,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929313795] [2023-11-23 06:47:38,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:47:38,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 06:47:38,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:38,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 06:47:38,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2023-11-23 06:47:38,349 INFO L87 Difference]: Start difference. First operand 1081 states and 1366 transitions. Second operand has 28 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 states have internal predecessors, (166), 9 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) [2023-11-23 06:47:40,932 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 06:47:43,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:45,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:47,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:52,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:54,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:56,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:57,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:57,062 INFO L93 Difference]: Finished difference Result 1845 states and 2347 transitions. [2023-11-23 06:47:57,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-23 06:47:57,065 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 states have internal predecessors, (166), 9 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) Word has length 123 [2023-11-23 06:47:57,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:57,078 INFO L225 Difference]: With dead ends: 1845 [2023-11-23 06:47:57,079 INFO L226 Difference]: Without dead ends: 1225 [2023-11-23 06:47:57,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 249 SyntacticMatches, 18 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=335, Invalid=1827, Unknown=0, NotChecked=0, Total=2162 [2023-11-23 06:47:57,090 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 612 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 3884 mSolverCounterSat, 386 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1277 SdHoareTripleChecker+Invalid, 4277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 3884 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:57,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 1277 Invalid, 4277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 3884 Invalid, 7 Unknown, 0 Unchecked, 18.0s Time] [2023-11-23 06:47:57,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-11-23 06:47:57,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1142. [2023-11-23 06:47:57,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1142 states, 755 states have (on average 1.1311258278145695) internal successors, (854), 780 states have internal predecessors, (854), 264 states have call successors, (264), 106 states have call predecessors, (264), 122 states have return successors, (309), 255 states have call predecessors, (309), 255 states have call successors, (309) [2023-11-23 06:47:57,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1142 states to 1142 states and 1427 transitions. [2023-11-23 06:47:57,278 INFO L78 Accepts]: Start accepts. Automaton has 1142 states and 1427 transitions. Word has length 123 [2023-11-23 06:47:57,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:57,278 INFO L495 AbstractCegarLoop]: Abstraction has 1142 states and 1427 transitions. [2023-11-23 06:47:57,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 6.148148148148148) internal successors, (166), 27 states have internal predecessors, (166), 9 states have call successors, (40), 4 states have call predecessors, (40), 7 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) [2023-11-23 06:47:57,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1142 states and 1427 transitions. [2023-11-23 06:47:57,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 06:47:57,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:57,280 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:47:57,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 06:47:57,498 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,SelfDestructingSolverStorable21 [2023-11-23 06:47:57,499 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:57,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:57,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1680364440, now seen corresponding path program 1 times [2023-11-23 06:47:57,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:57,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805263899] [2023-11-23 06:47:57,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:57,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:47:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:47:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:47:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:47:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:47:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:47:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:47:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:47:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:47:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:47:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:47:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 06:47:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:59,450 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 06:47:59,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:59,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805263899] [2023-11-23 06:47:59,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805263899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:59,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078803211] [2023-11-23 06:47:59,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:59,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:59,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:59,452 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:47:59,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 06:48:00,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:00,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 2670 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-23 06:48:00,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:00,902 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 0 case distinctions, treesize of input 37 treesize of output 21 [2023-11-23 06:48:00,905 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 39 treesize of output 27 [2023-11-23 06:48:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 21 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 06:48:01,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:48:01,929 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 35 treesize of output 27 [2023-11-23 06:48:02,246 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-11-23 06:48:02,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2023-11-23 06:48:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 06:48:02,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078803211] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:48:02,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:48:02,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 39 [2023-11-23 06:48:02,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132581457] [2023-11-23 06:48:02,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:48:02,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-23 06:48:02,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:02,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-23 06:48:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1319, Unknown=0, NotChecked=0, Total=1482 [2023-11-23 06:48:02,337 INFO L87 Difference]: Start difference. First operand 1142 states and 1427 transitions. Second operand has 39 states, 39 states have (on average 4.0) internal successors, (156), 38 states have internal predecessors, (156), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2023-11-23 06:48:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:12,111 INFO L93 Difference]: Finished difference Result 3843 states and 4977 transitions. [2023-11-23 06:48:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-23 06:48:12,111 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.0) internal successors, (156), 38 states have internal predecessors, (156), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) Word has length 123 [2023-11-23 06:48:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:12,121 INFO L225 Difference]: With dead ends: 3843 [2023-11-23 06:48:12,122 INFO L226 Difference]: Without dead ends: 2806 [2023-11-23 06:48:12,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 243 SyntacticMatches, 18 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=886, Invalid=4516, Unknown=0, NotChecked=0, Total=5402 [2023-11-23 06:48:12,126 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 571 mSDsluCounter, 2666 mSDsCounter, 0 mSdLazyCounter, 7387 mSolverCounterSat, 341 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 7728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 341 IncrementalHoareTripleChecker+Valid, 7387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:12,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 2890 Invalid, 7728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [341 Valid, 7387 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2023-11-23 06:48:12,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2023-11-23 06:48:12,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2406. [2023-11-23 06:48:12,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2406 states, 1601 states have (on average 1.1242973141786383) internal successors, (1800), 1652 states have internal predecessors, (1800), 571 states have call successors, (571), 202 states have call predecessors, (571), 233 states have return successors, (691), 551 states have call predecessors, (691), 555 states have call successors, (691) [2023-11-23 06:48:12,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2406 states to 2406 states and 3062 transitions. [2023-11-23 06:48:12,510 INFO L78 Accepts]: Start accepts. Automaton has 2406 states and 3062 transitions. Word has length 123 [2023-11-23 06:48:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:12,511 INFO L495 AbstractCegarLoop]: Abstraction has 2406 states and 3062 transitions. [2023-11-23 06:48:12,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.0) internal successors, (156), 38 states have internal predecessors, (156), 6 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2023-11-23 06:48:12,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2406 states and 3062 transitions. [2023-11-23 06:48:12,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 06:48:12,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:12,515 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:12,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-23 06:48:12,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:12,728 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:12,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:12,729 INFO L85 PathProgramCache]: Analyzing trace with hash -376721960, now seen corresponding path program 1 times [2023-11-23 06:48:12,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:12,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184469310] [2023-11-23 06:48:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:12,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:14,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:14,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:48:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:48:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:14,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:14,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:48:14,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:15,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:48:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:15,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:48:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:48:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:15,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:48:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:15,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:48:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:15,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:48:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:48:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:15,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:48:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 06:48:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 13 proven. 21 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 06:48:15,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:15,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184469310] [2023-11-23 06:48:15,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184469310] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:15,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297480556] [2023-11-23 06:48:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:15,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:15,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:15,324 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:48:15,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 06:48:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:17,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-23 06:48:17,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:17,754 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 31 treesize of output 23 [2023-11-23 06:48:17,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:48:17,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 34 [2023-11-23 06:48:18,083 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 69 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 06:48:18,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:48:18,468 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 35 treesize of output 27 [2023-11-23 06:48:18,668 INFO L349 Elim1Store]: treesize reduction 15, result has 69.4 percent of original size [2023-11-23 06:48:18,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 50 [2023-11-23 06:48:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 28 proven. 13 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 06:48:18,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297480556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:48:18,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:48:18,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 14] total 37 [2023-11-23 06:48:18,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080712271] [2023-11-23 06:48:18,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:48:18,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-23 06:48:18,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:18,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-23 06:48:18,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1185, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 06:48:18,726 INFO L87 Difference]: Start difference. First operand 2406 states and 3062 transitions. Second operand has 37 states, 36 states have (on average 4.055555555555555) internal successors, (146), 36 states have internal predecessors, (146), 7 states have call successors, (38), 4 states have call predecessors, (38), 7 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) [2023-11-23 06:48:22,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:24,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:26,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:28,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:36,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:38,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:41,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:41,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:41,985 INFO L93 Difference]: Finished difference Result 3434 states and 4335 transitions. [2023-11-23 06:48:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-23 06:48:41,988 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.055555555555555) internal successors, (146), 36 states have internal predecessors, (146), 7 states have call successors, (38), 4 states have call predecessors, (38), 7 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) Word has length 123 [2023-11-23 06:48:41,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:41,997 INFO L225 Difference]: With dead ends: 3434 [2023-11-23 06:48:41,997 INFO L226 Difference]: Without dead ends: 2717 [2023-11-23 06:48:42,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 257 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=638, Invalid=3652, Unknown=0, NotChecked=0, Total=4290 [2023-11-23 06:48:42,000 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 605 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 6290 mSolverCounterSat, 413 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 6710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 413 IncrementalHoareTripleChecker+Valid, 6290 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:42,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 2057 Invalid, 6710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [413 Valid, 6290 Invalid, 7 Unknown, 0 Unchecked, 21.7s Time] [2023-11-23 06:48:42,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2023-11-23 06:48:42,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 2395. [2023-11-23 06:48:42,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 1596 states have (on average 1.1196741854636592) internal successors, (1787), 1641 states have internal predecessors, (1787), 571 states have call successors, (571), 202 states have call predecessors, (571), 227 states have return successors, (665), 551 states have call predecessors, (665), 555 states have call successors, (665) [2023-11-23 06:48:42,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 3023 transitions. [2023-11-23 06:48:42,345 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 3023 transitions. Word has length 123 [2023-11-23 06:48:42,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:42,345 INFO L495 AbstractCegarLoop]: Abstraction has 2395 states and 3023 transitions. [2023-11-23 06:48:42,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.055555555555555) internal successors, (146), 36 states have internal predecessors, (146), 7 states have call successors, (38), 4 states have call predecessors, (38), 7 states have return successors, (37), 6 states have call predecessors, (37), 6 states have call successors, (37) [2023-11-23 06:48:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 3023 transitions. [2023-11-23 06:48:42,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-23 06:48:42,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:42,349 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:42,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 06:48:42,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:42,568 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:42,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:42,568 INFO L85 PathProgramCache]: Analyzing trace with hash 718804499, now seen corresponding path program 1 times [2023-11-23 06:48:42,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:42,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240134727] [2023-11-23 06:48:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:42,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:48:43,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:48:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:48:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:48:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:48:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:48:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:48:43,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:48:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:48:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:48:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:48:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 06:48:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:43,183 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-23 06:48:43,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:43,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240134727] [2023-11-23 06:48:43,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240134727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:43,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:48:43,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 06:48:43,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664241155] [2023-11-23 06:48:43,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:43,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:48:43,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:43,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:48:43,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:48:43,186 INFO L87 Difference]: Start difference. First operand 2395 states and 3023 transitions. Second operand has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 06:48:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:44,598 INFO L93 Difference]: Finished difference Result 2468 states and 3112 transitions. [2023-11-23 06:48:44,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:48:44,598 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 125 [2023-11-23 06:48:44,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:44,607 INFO L225 Difference]: With dead ends: 2468 [2023-11-23 06:48:44,607 INFO L226 Difference]: Without dead ends: 2466 [2023-11-23 06:48:44,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-11-23 06:48:44,608 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 129 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1467 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:44,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 1467 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 06:48:44,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2023-11-23 06:48:44,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2428. [2023-11-23 06:48:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 1619 states have (on average 1.1179740580605313) internal successors, (1810), 1667 states have internal predecessors, (1810), 573 states have call successors, (573), 207 states have call predecessors, (573), 235 states have return successors, (673), 553 states have call predecessors, (673), 557 states have call successors, (673) [2023-11-23 06:48:44,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3056 transitions. [2023-11-23 06:48:44,945 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3056 transitions. Word has length 125 [2023-11-23 06:48:44,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:44,947 INFO L495 AbstractCegarLoop]: Abstraction has 2428 states and 3056 transitions. [2023-11-23 06:48:44,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 06:48:44,947 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3056 transitions. [2023-11-23 06:48:44,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-23 06:48:44,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:44,951 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:44,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-23 06:48:44,951 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:44,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:44,952 INFO L85 PathProgramCache]: Analyzing trace with hash -849296751, now seen corresponding path program 1 times [2023-11-23 06:48:44,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:44,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361379278] [2023-11-23 06:48:44,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:44,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:48:47,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:48:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:48:47,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:48:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:48:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:48:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:48:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:48:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:48:47,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:48:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:48:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 06:48:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:47,789 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 06:48:47,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:47,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361379278] [2023-11-23 06:48:47,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361379278] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:47,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886673145] [2023-11-23 06:48:47,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:47,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:47,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:47,792 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:48:47,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 06:48:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:48,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 2690 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-23 06:48:48,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:48,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:48:49,750 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 0 case distinctions, treesize of input 26 treesize of output 14 [2023-11-23 06:48:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 51 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 06:48:50,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:48:51,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2023-11-23 06:48:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 36 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-23 06:48:51,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886673145] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:48:51,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:48:51,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23, 19] total 57 [2023-11-23 06:48:51,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985757743] [2023-11-23 06:48:51,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:48:51,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-23 06:48:51,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:51,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-23 06:48:51,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=3029, Unknown=0, NotChecked=0, Total=3192 [2023-11-23 06:48:51,066 INFO L87 Difference]: Start difference. First operand 2428 states and 3056 transitions. Second operand has 57 states, 44 states have (on average 3.590909090909091) internal successors, (158), 47 states have internal predecessors, (158), 13 states have call successors, (39), 5 states have call predecessors, (39), 12 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) [2023-11-23 06:48:54,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:57,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:00,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:08,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:12,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:14,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:16,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:16,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:16,812 INFO L93 Difference]: Finished difference Result 2547 states and 3208 transitions. [2023-11-23 06:49:16,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-11-23 06:49:16,812 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 44 states have (on average 3.590909090909091) internal successors, (158), 47 states have internal predecessors, (158), 13 states have call successors, (39), 5 states have call predecessors, (39), 12 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) Word has length 125 [2023-11-23 06:49:16,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:16,825 INFO L225 Difference]: With dead ends: 2547 [2023-11-23 06:49:16,825 INFO L226 Difference]: Without dead ends: 2545 [2023-11-23 06:49:16,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 242 SyntacticMatches, 17 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3737 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1328, Invalid=13434, Unknown=0, NotChecked=0, Total=14762 [2023-11-23 06:49:16,830 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 793 mSDsluCounter, 3405 mSDsCounter, 0 mSdLazyCounter, 9372 mSolverCounterSat, 373 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 9752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 9372 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:16,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [831 Valid, 3554 Invalid, 9752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 9372 Invalid, 7 Unknown, 0 Unchecked, 22.4s Time] [2023-11-23 06:49:16,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2545 states. [2023-11-23 06:49:17,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2545 to 2440. [2023-11-23 06:49:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 1628 states have (on average 1.1173218673218672) internal successors, (1819), 1676 states have internal predecessors, (1819), 573 states have call successors, (573), 210 states have call predecessors, (573), 238 states have return successors, (673), 553 states have call predecessors, (673), 557 states have call successors, (673) [2023-11-23 06:49:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3065 transitions. [2023-11-23 06:49:17,254 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3065 transitions. Word has length 125 [2023-11-23 06:49:17,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:17,255 INFO L495 AbstractCegarLoop]: Abstraction has 2440 states and 3065 transitions. [2023-11-23 06:49:17,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 44 states have (on average 3.590909090909091) internal successors, (158), 47 states have internal predecessors, (158), 13 states have call successors, (39), 5 states have call predecessors, (39), 12 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) [2023-11-23 06:49:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3065 transitions. [2023-11-23 06:49:17,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 06:49:17,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:17,259 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:17,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 06:49:17,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-23 06:49:17,473 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:17,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:17,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1404020612, now seen corresponding path program 1 times [2023-11-23 06:49:17,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:17,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652170164] [2023-11-23 06:49:17,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:17,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:17,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:49:17,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:49:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:17,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:49:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:49:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:49:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:49:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:49:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:49:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:49:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:49:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 06:49:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 06:49:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 06:49:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 06:49:17,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:17,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652170164] [2023-11-23 06:49:17,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652170164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:17,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:49:17,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 06:49:17,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989848665] [2023-11-23 06:49:17,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:17,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:49:17,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:17,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:49:17,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:49:17,957 INFO L87 Difference]: Start difference. First operand 2440 states and 3065 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:49:18,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:18,962 INFO L93 Difference]: Finished difference Result 3803 states and 4838 transitions. [2023-11-23 06:49:18,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:49:18,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2023-11-23 06:49:18,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:18,971 INFO L225 Difference]: With dead ends: 3803 [2023-11-23 06:49:18,971 INFO L226 Difference]: Without dead ends: 2466 [2023-11-23 06:49:18,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:49:18,976 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 108 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:18,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 569 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:49:18,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2023-11-23 06:49:19,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2440. [2023-11-23 06:49:19,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2440 states, 1628 states have (on average 1.113022113022113) internal successors, (1812), 1676 states have internal predecessors, (1812), 573 states have call successors, (573), 210 states have call predecessors, (573), 238 states have return successors, (673), 553 states have call predecessors, (673), 557 states have call successors, (673) [2023-11-23 06:49:19,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3058 transitions. [2023-11-23 06:49:19,341 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3058 transitions. Word has length 133 [2023-11-23 06:49:19,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:19,341 INFO L495 AbstractCegarLoop]: Abstraction has 2440 states and 3058 transitions. [2023-11-23 06:49:19,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:49:19,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3058 transitions. [2023-11-23 06:49:19,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 06:49:19,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:19,346 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:19,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-23 06:49:19,346 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:19,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:19,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1913493702, now seen corresponding path program 1 times [2023-11-23 06:49:19,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:19,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268126522] [2023-11-23 06:49:19,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:19,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 06:49:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:49:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 06:49:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:49:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:49:19,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:49:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:49:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:49:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:49:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:49:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 06:49:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 06:49:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 06:49:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:19,895 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 11 proven. 10 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-23 06:49:19,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:19,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268126522] [2023-11-23 06:49:19,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268126522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:19,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957064352] [2023-11-23 06:49:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:19,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:19,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:19,897 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:49:19,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 06:49:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:20,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 06:49:20,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:20,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:49:21,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2023-11-23 06:49:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 06:49:21,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:49:21,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2023-11-23 06:49:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 06:49:21,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957064352] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:49:21,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:49:21,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 19, 13] total 32 [2023-11-23 06:49:21,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574725330] [2023-11-23 06:49:21,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:49:21,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-23 06:49:21,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-23 06:49:21,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=908, Unknown=0, NotChecked=0, Total=992 [2023-11-23 06:49:21,708 INFO L87 Difference]: Start difference. First operand 2440 states and 3058 transitions. Second operand has 32 states, 25 states have (on average 5.52) internal successors, (138), 25 states have internal predecessors, (138), 10 states have call successors, (44), 6 states have call predecessors, (44), 8 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) [2023-11-23 06:49:25,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:27,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:29,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:34,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:37,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:39,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:41,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:41,591 INFO L93 Difference]: Finished difference Result 3944 states and 4964 transitions. [2023-11-23 06:49:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-23 06:49:41,592 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 25 states have (on average 5.52) internal successors, (138), 25 states have internal predecessors, (138), 10 states have call successors, (44), 6 states have call predecessors, (44), 8 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) Word has length 133 [2023-11-23 06:49:41,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:41,610 INFO L225 Difference]: With dead ends: 3944 [2023-11-23 06:49:41,614 INFO L226 Difference]: Without dead ends: 2000 [2023-11-23 06:49:41,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 260 SyntacticMatches, 20 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=298, Invalid=3242, Unknown=0, NotChecked=0, Total=3540 [2023-11-23 06:49:41,623 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 412 mSDsluCounter, 2455 mSDsCounter, 0 mSdLazyCounter, 5152 mSolverCounterSat, 220 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 2615 SdHoareTripleChecker+Invalid, 5379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 5152 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:41,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 2615 Invalid, 5379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 5152 Invalid, 7 Unknown, 0 Unchecked, 19.0s Time] [2023-11-23 06:49:41,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2023-11-23 06:49:41,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 1909. [2023-11-23 06:49:41,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1909 states, 1276 states have (on average 1.1183385579937304) internal successors, (1427), 1316 states have internal predecessors, (1427), 443 states have call successors, (443), 166 states have call predecessors, (443), 189 states have return successors, (523), 426 states have call predecessors, (523), 431 states have call successors, (523) [2023-11-23 06:49:41,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1909 states to 1909 states and 2393 transitions. [2023-11-23 06:49:41,947 INFO L78 Accepts]: Start accepts. Automaton has 1909 states and 2393 transitions. Word has length 133 [2023-11-23 06:49:41,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:41,947 INFO L495 AbstractCegarLoop]: Abstraction has 1909 states and 2393 transitions. [2023-11-23 06:49:41,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 25 states have (on average 5.52) internal successors, (138), 25 states have internal predecessors, (138), 10 states have call successors, (44), 6 states have call predecessors, (44), 8 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) [2023-11-23 06:49:41,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1909 states and 2393 transitions. [2023-11-23 06:49:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 06:49:41,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:41,950 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:41,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-23 06:49:42,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-23 06:49:42,156 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:42,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash 978893542, now seen corresponding path program 1 times [2023-11-23 06:49:42,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:42,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009799559] [2023-11-23 06:49:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:42,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:49:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:49:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:49:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:49:42,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:49:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:49:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:49:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:49:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:49:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:49:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:49:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 06:49:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 06:49:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 06:49:42,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:42,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009799559] [2023-11-23 06:49:42,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009799559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:42,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:49:42,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 06:49:42,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624718202] [2023-11-23 06:49:42,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:42,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:49:42,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:42,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:49:42,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:49:42,832 INFO L87 Difference]: Start difference. First operand 1909 states and 2393 transitions. Second operand has 12 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 06:49:44,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:44,290 INFO L93 Difference]: Finished difference Result 2013 states and 2521 transitions. [2023-11-23 06:49:44,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:49:44,305 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 139 [2023-11-23 06:49:44,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:44,327 INFO L225 Difference]: With dead ends: 2013 [2023-11-23 06:49:44,328 INFO L226 Difference]: Without dead ends: 2011 [2023-11-23 06:49:44,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2023-11-23 06:49:44,329 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 215 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:44,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1451 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 06:49:44,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2011 states. [2023-11-23 06:49:44,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2011 to 1968. [2023-11-23 06:49:44,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1313 states have (on average 1.115003808073115) internal successors, (1464), 1357 states have internal predecessors, (1464), 452 states have call successors, (452), 175 states have call predecessors, (452), 202 states have return successors, (542), 435 states have call predecessors, (542), 440 states have call successors, (542) [2023-11-23 06:49:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2458 transitions. [2023-11-23 06:49:44,599 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2458 transitions. Word has length 139 [2023-11-23 06:49:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:44,600 INFO L495 AbstractCegarLoop]: Abstraction has 1968 states and 2458 transitions. [2023-11-23 06:49:44,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.8) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 06:49:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2458 transitions. [2023-11-23 06:49:44,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 06:49:44,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:44,603 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:44,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-23 06:49:44,603 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:44,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:44,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1057222882, now seen corresponding path program 1 times [2023-11-23 06:49:44,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:44,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015828569] [2023-11-23 06:49:44,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:44,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:49:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 06:49:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:49:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:49:45,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:49:45,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:49:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:49:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:49:45,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:49:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:49:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:49:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 06:49:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 06:49:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 06:49:46,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:46,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015828569] [2023-11-23 06:49:46,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015828569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:46,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103245666] [2023-11-23 06:49:46,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:46,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:46,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:46,012 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:49:46,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 06:49:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:46,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-23 06:49:46,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:46,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:49:47,935 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 51 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:49:47,935 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:49:48,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2023-11-23 06:49:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 40 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 06:49:48,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103245666] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:49:48,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:49:48,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 22, 18] total 45 [2023-11-23 06:49:48,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836536674] [2023-11-23 06:49:48,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:49:48,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-11-23 06:49:48,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:48,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-11-23 06:49:48,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1852, Unknown=0, NotChecked=0, Total=1980 [2023-11-23 06:49:48,656 INFO L87 Difference]: Start difference. First operand 1968 states and 2458 transitions. Second operand has 45 states, 36 states have (on average 4.777777777777778) internal successors, (172), 36 states have internal predecessors, (172), 11 states have call successors, (49), 7 states have call predecessors, (49), 10 states have return successors, (46), 11 states have call predecessors, (46), 9 states have call successors, (46) [2023-11-23 06:49:50,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:55,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:57,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:03,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:05,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:09,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:13,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:15,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:17,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:19,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:50:20,614 INFO L93 Difference]: Finished difference Result 3363 states and 4167 transitions. [2023-11-23 06:50:20,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-23 06:50:20,614 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 36 states have (on average 4.777777777777778) internal successors, (172), 36 states have internal predecessors, (172), 11 states have call successors, (49), 7 states have call predecessors, (49), 10 states have return successors, (46), 11 states have call predecessors, (46), 9 states have call successors, (46) Word has length 139 [2023-11-23 06:50:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:50:20,620 INFO L225 Difference]: With dead ends: 3363 [2023-11-23 06:50:20,620 INFO L226 Difference]: Without dead ends: 2339 [2023-11-23 06:50:20,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 267 SyntacticMatches, 23 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=899, Invalid=8413, Unknown=0, NotChecked=0, Total=9312 [2023-11-23 06:50:20,627 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 716 mSDsluCounter, 4139 mSDsCounter, 0 mSdLazyCounter, 10193 mSolverCounterSat, 366 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 4356 SdHoareTripleChecker+Invalid, 10569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 10193 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:50:20,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 4356 Invalid, 10569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 10193 Invalid, 10 Unknown, 0 Unchecked, 29.6s Time] [2023-11-23 06:50:20,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. Killed by 15