./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_eq_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_cursor_eq_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 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:06:39,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:06:39,454 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:06:39,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:06:39,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:06:39,492 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:06:39,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:06:39,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:06:39,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:06:39,498 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:06:39,499 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:06:39,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:06:39,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:06:39,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:06:39,501 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:06:39,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:06:39,502 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:06:39,502 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:06:39,502 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:06:39,503 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:06:39,503 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:06:39,503 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:06:39,504 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:06:39,504 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:06:39,505 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:06:39,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:06:39,505 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:06:39,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:06:39,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:06:39,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:06:39,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:06:39,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:06:39,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:06:39,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:06:39,508 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:06:39,508 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:06:39,521 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:06:39,521 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:06:39,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:06:39,522 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 376fa3967c5a16dbeae94f1517cf176a2f53d2660c6b5c3d2eeb4fd9f827337c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:06:39,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:06:39,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:06:39,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:06:39,776 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:06:39,776 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:06:39,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_eq_harness.i [2023-11-23 07:06:41,099 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:06:41,562 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:06:41,563 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_eq_harness.i [2023-11-23 07:06:41,610 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6605375c3/6cae3357ce574b4ea478830fb6df1971/FLAGe21ddc01a [2023-11-23 07:06:41,625 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6605375c3/6cae3357ce574b4ea478830fb6df1971 [2023-11-23 07:06:41,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:06:41,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:06:41,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:06:41,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:06:41,637 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:06:41,638 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:06:41" (1/1) ... [2023-11-23 07:06:41,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd9f9f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:41, skipping insertion in model container [2023-11-23 07:06:41,639 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:06:41" (1/1) ... [2023-11-23 07:06:41,742 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:06:42,034 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_cursor_eq_harness.i[4492,4505] [2023-11-23 07:06:42,043 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_cursor_eq_harness.i[4552,4565] [2023-11-23 07:06:43,001 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,002 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,003 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,003 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,006 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,024 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,025 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,026 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,026 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,378 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:06:43,379 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:06:43,380 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:06:43,383 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:06:43,389 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:06:43,389 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:06:43,390 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:06:43,392 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:06:43,393 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:06:43,395 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:06:43,661 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,662 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:06:43,807 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:06:43,819 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_cursor_eq_harness.i[4492,4505] [2023-11-23 07:06:43,820 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_cursor_eq_harness.i[4552,4565] [2023-11-23 07:06:43,846 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,846 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,847 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,847 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,847 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,852 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,853 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,854 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,854 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,877 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:06:43,878 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:06:43,879 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:06:43,879 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:06:43,880 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:06:43,881 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:06:43,881 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:06:43,881 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:06:43,882 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:06:43,882 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:06:43,954 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8277] [2023-11-23 07:06:43,956 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,956 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:06:43,971 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8763-8774] [2023-11-23 07:06:43,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:06:44,217 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,217 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,217 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,218 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,218 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,218 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,218 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,218 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,219 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,219 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,219 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,220 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,220 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,220 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,221 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,221 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,221 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,221 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:06:44,229 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:06:44,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44 WrapperNode [2023-11-23 07:06:44,230 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:06:44,231 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:06:44,231 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:06:44,231 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:06:44,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (1/1) ... [2023-11-23 07:06:44,335 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (1/1) ... [2023-11-23 07:06:44,412 INFO L138 Inliner]: procedures = 690, calls = 2653, calls flagged for inlining = 60, calls inlined = 6, statements flattened = 873 [2023-11-23 07:06:44,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:06:44,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:06:44,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:06:44,413 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:06:44,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (1/1) ... [2023-11-23 07:06:44,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (1/1) ... [2023-11-23 07:06:44,430 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (1/1) ... [2023-11-23 07:06:44,505 INFO L188 MemorySlicer]: Split 546 memory accesses to 8 slices as follows [2, 5, 256, 236, 4, 34, 6, 3]. 47 percent of accesses are in the largest equivalence class. The 502 initializations are split as follows [2, 5, 256, 236, 0, 0, 0, 3]. The 5 writes are split as follows [0, 0, 0, 0, 0, 3, 2, 0]. [2023-11-23 07:06:44,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (1/1) ... [2023-11-23 07:06:44,506 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (1/1) ... [2023-11-23 07:06:44,549 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (1/1) ... [2023-11-23 07:06:44,563 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (1/1) ... [2023-11-23 07:06:44,571 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (1/1) ... [2023-11-23 07:06:44,580 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (1/1) ... [2023-11-23 07:06:44,592 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:06:44,598 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:06:44,598 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:06:44,599 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:06:44,600 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (1/1) ... [2023-11-23 07:06:44,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:06:44,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:06:44,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 07:06:44,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 07:06:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 07:06:44,704 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 07:06:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 07:06:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:06:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:06:44,704 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:06:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:06:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:06:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:06:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:06:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:06:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:06:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 07:06:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 07:06:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_bounded [2023-11-23 07:06:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_bounded [2023-11-23 07:06:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:06:44,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:06:44,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:06:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:06:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 07:06:44,708 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 07:06:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:06:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:06:44,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:06:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:06:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:06:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:06:44,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:06:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 07:06:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:06:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:06:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:06:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:06:44,710 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 07:06:44,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 07:06:44,711 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:06:44,711 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:06:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:06:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:06:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:06:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:06:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:06:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:06:44,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 07:06:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 07:06:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 07:06:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2023-11-23 07:06:44,713 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2023-11-23 07:06:44,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:06:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:06:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:06:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:06:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:06:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:06:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:06:44,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 07:06:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 07:06:44,715 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 07:06:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:06:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:06:44,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:06:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:06:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:06:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:06:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 07:06:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 07:06:44,716 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_cursor_has_allocated_buffer_member [2023-11-23 07:06:44,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_cursor_has_allocated_buffer_member [2023-11-23 07:06:44,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:06:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:06:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:06:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:06:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:06:44,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:06:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 07:06:44,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 07:06:45,007 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:06:45,014 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:06:46,047 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:06:46,203 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:06:46,203 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 07:06:46,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:06:46 BoogieIcfgContainer [2023-11-23 07:06:46,204 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:06:46,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:06:46,208 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:06:46,213 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:06:46,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:06:41" (1/3) ... [2023-11-23 07:06:46,214 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cade569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:06:46, skipping insertion in model container [2023-11-23 07:06:46,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:06:44" (2/3) ... [2023-11-23 07:06:46,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cade569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:06:46, skipping insertion in model container [2023-11-23 07:06:46,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:06:46" (3/3) ... [2023-11-23 07:06:46,219 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_eq_harness.i [2023-11-23 07:06:46,238 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:06:46,239 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:06:46,304 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:06:46,322 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;@39a996e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:06:46,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:06:46,327 INFO L276 IsEmpty]: Start isEmpty. Operand has 122 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 70 states have internal predecessors, (88), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-23 07:06:46,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 07:06:46,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:06:46,342 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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] [2023-11-23 07:06:46,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:06:46,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:06:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1816934940, now seen corresponding path program 1 times [2023-11-23 07:06:46,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:06:46,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005483105] [2023-11-23 07:06:46,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:06:46,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:06:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:46,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:06:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:06:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:06:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:06:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 07:06:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:06:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:06:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:06:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:06:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:06:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:06:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:06:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:06:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:06:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 07:06:47,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:06:47,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005483105] [2023-11-23 07:06:47,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005483105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:06:47,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:06:47,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:06:47,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008804889] [2023-11-23 07:06:47,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:06:47,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:06:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:06:47,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:06:47,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:06:47,596 INFO L87 Difference]: Start difference. First operand has 122 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 70 states have internal predecessors, (88), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 07:06:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:06:48,863 INFO L93 Difference]: Finished difference Result 244 states and 362 transitions. [2023-11-23 07:06:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:06:48,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2023-11-23 07:06:48,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:06:48,878 INFO L225 Difference]: With dead ends: 244 [2023-11-23 07:06:48,878 INFO L226 Difference]: Without dead ends: 122 [2023-11-23 07:06:48,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:06:48,895 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 95 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:06:48,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 134 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 07:06:48,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-23 07:06:48,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2023-11-23 07:06:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.2388059701492538) internal successors, (83), 68 states have internal predecessors, (83), 40 states have call successors, (40), 11 states have call predecessors, (40), 11 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-23 07:06:48,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2023-11-23 07:06:48,966 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 93 [2023-11-23 07:06:48,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:06:48,966 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2023-11-23 07:06:48,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 07:06:48,967 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2023-11-23 07:06:48,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 07:06:48,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:06:48,979 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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] [2023-11-23 07:06:48,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 07:06:48,979 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:06:48,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:06:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1600628444, now seen corresponding path program 1 times [2023-11-23 07:06:48,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:06:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118901025] [2023-11-23 07:06:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:06:48,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:06:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:49,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:06:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:06:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:49,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:49,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:06:49,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:06:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:49,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 07:06:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:49,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:06:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:49,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:06:49,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:06:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:50,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:06:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:50,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:06:50,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:06:50,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:50,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:06:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:50,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:50,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:06:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:50,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:06:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:50,080 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 07:06:50,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:06:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118901025] [2023-11-23 07:06:50,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118901025] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:06:50,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682895475] [2023-11-23 07:06:50,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:06:50,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:06:50,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:06:50,084 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:06:50,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 07:06:50,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:50,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 2810 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:06:50,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:06:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 07:06:50,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:06:50,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682895475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:06:50,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:06:50,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 07:06:50,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696096646] [2023-11-23 07:06:50,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:06:50,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:06:50,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:06:50,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:06:50,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:06:50,856 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 07:06:51,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:06:51,655 INFO L93 Difference]: Finished difference Result 234 states and 323 transitions. [2023-11-23 07:06:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:06:51,656 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 93 [2023-11-23 07:06:51,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:06:51,657 INFO L225 Difference]: With dead ends: 234 [2023-11-23 07:06:51,658 INFO L226 Difference]: Without dead ends: 121 [2023-11-23 07:06:51,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:06:51,659 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 43 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:06:51,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 469 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 07:06:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-23 07:06:51,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-23 07:06:51,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 70 states have internal predecessors, (84), 40 states have call successors, (40), 11 states have call predecessors, (40), 12 states have return successors, (45), 39 states have call predecessors, (45), 39 states have call successors, (45) [2023-11-23 07:06:51,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 169 transitions. [2023-11-23 07:06:51,678 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 169 transitions. Word has length 93 [2023-11-23 07:06:51,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:06:51,678 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 169 transitions. [2023-11-23 07:06:51,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 07:06:51,678 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 169 transitions. [2023-11-23 07:06:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 07:06:51,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:06:51,681 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:06:51,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 07:06:51,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:06:51,896 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:06:51,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:06:51,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1736790185, now seen corresponding path program 1 times [2023-11-23 07:06:51,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:06:51,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136641242] [2023-11-23 07:06:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:06:51,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:06:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:06:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:06:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:06:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:06:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:06:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:06:52,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:06:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:06:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:06:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 07:06:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:06:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:06:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:06:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:06:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:52,943 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 07:06:52,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:06:52,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136641242] [2023-11-23 07:06:52,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136641242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:06:52,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740414325] [2023-11-23 07:06:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:06:52,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:06:52,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:06:52,946 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:06:52,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 07:06:53,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:53,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 2815 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:06:53,519 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:06:53,647 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-23 07:06:53,648 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:06:53,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740414325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:06:53,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:06:53,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 07:06:53,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065730406] [2023-11-23 07:06:53,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:06:53,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:06:53,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:06:53,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:06:53,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:06:53,653 INFO L87 Difference]: Start difference. First operand 121 states and 169 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 07:06:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:06:54,158 INFO L93 Difference]: Finished difference Result 198 states and 276 transitions. [2023-11-23 07:06:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:06:54,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 95 [2023-11-23 07:06:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:06:54,160 INFO L225 Difference]: With dead ends: 198 [2023-11-23 07:06:54,160 INFO L226 Difference]: Without dead ends: 121 [2023-11-23 07:06:54,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:06:54,162 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 43 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:06:54,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 482 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:06:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-23 07:06:54,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-23 07:06:54,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 70 states have internal predecessors, (84), 40 states have call successors, (40), 11 states have call predecessors, (40), 12 states have return successors, (43), 39 states have call predecessors, (43), 39 states have call successors, (43) [2023-11-23 07:06:54,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 167 transitions. [2023-11-23 07:06:54,203 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 167 transitions. Word has length 95 [2023-11-23 07:06:54,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:06:54,204 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 167 transitions. [2023-11-23 07:06:54,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 07:06:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 167 transitions. [2023-11-23 07:06:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 07:06:54,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:06:54,210 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:06:54,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:06:54,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 07:06:54,425 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:06:54,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:06:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash 344886413, now seen corresponding path program 2 times [2023-11-23 07:06:54,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:06:54,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588133373] [2023-11-23 07:06:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:06:54,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:06:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:54,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:54,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:06:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:06:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:06:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:06:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:06:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:06:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:06:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:06:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:06:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 07:06:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 07:06:55,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 07:06:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:06:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:06:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-23 07:06:55,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:06:55,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588133373] [2023-11-23 07:06:55,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588133373] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:06:55,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057122766] [2023-11-23 07:06:55,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:06:55,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:06:55,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:06:55,395 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:06:55,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 07:06:55,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 07:06:55,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:06:55,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 2302 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 07:06:55,923 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:06:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 07:06:56,034 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:06:56,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057122766] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:06:56,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:06:56,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-23 07:06:56,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259203426] [2023-11-23 07:06:56,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:06:56,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:06:56,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:06:56,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:06:56,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:06:56,036 INFO L87 Difference]: Start difference. First operand 121 states and 167 transitions. Second operand has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (18), 2 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 07:06:57,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:06:57,219 INFO L93 Difference]: Finished difference Result 132 states and 185 transitions. [2023-11-23 07:06:57,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:06:57,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (18), 2 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 99 [2023-11-23 07:06:57,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:06:57,222 INFO L225 Difference]: With dead ends: 132 [2023-11-23 07:06:57,222 INFO L226 Difference]: Without dead ends: 130 [2023-11-23 07:06:57,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:06:57,223 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 17 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:06:57,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1044 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 07:06:57,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-23 07:06:57,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2023-11-23 07:06:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 73 states have (on average 1.2191780821917808) internal successors, (89), 76 states have internal predecessors, (89), 41 states have call successors, (41), 12 states have call predecessors, (41), 14 states have return successors, (52), 40 states have call predecessors, (52), 40 states have call successors, (52) [2023-11-23 07:06:57,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 182 transitions. [2023-11-23 07:06:57,239 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 182 transitions. Word has length 99 [2023-11-23 07:06:57,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:06:57,240 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 182 transitions. [2023-11-23 07:06:57,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (18), 2 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 07:06:57,241 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 182 transitions. [2023-11-23 07:06:57,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 07:06:57,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:06:57,242 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 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 07:06:57,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:06:57,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:06:57,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:06:57,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:06:57,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1982036155, now seen corresponding path program 1 times [2023-11-23 07:06:57,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:06:57,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917401768] [2023-11-23 07:06:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:06:57,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:06:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:57,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:06:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:06:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:06:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:06:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:06:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:06:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:06:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:06:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:06:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 07:06:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 07:06:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 07:06:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:06:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:06:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:06:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-23 07:06:58,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:06:58,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917401768] [2023-11-23 07:06:58,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917401768] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:06:58,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041850186] [2023-11-23 07:06:58,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:06:58,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:06:58,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:06:58,461 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:06:58,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 07:06:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:06:58,995 INFO L262 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:06:58,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:06:59,107 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 07:06:59,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:06:59,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041850186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:06:59,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:06:59,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 07:06:59,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616469548] [2023-11-23 07:06:59,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:06:59,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:06:59,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:06:59,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:06:59,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:06:59,112 INFO L87 Difference]: Start difference. First operand 129 states and 182 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 07:06:59,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:06:59,359 INFO L93 Difference]: Finished difference Result 228 states and 320 transitions. [2023-11-23 07:06:59,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:06:59,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 103 [2023-11-23 07:06:59,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:06:59,361 INFO L225 Difference]: With dead ends: 228 [2023-11-23 07:06:59,361 INFO L226 Difference]: Without dead ends: 127 [2023-11-23 07:06:59,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:06:59,362 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 42 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:06:59,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 495 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:06:59,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-23 07:06:59,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-23 07:06:59,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 74 states have internal predecessors, (87), 41 states have call successors, (41), 12 states have call predecessors, (41), 13 states have return successors, (48), 40 states have call predecessors, (48), 40 states have call successors, (48) [2023-11-23 07:06:59,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 176 transitions. [2023-11-23 07:06:59,397 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 176 transitions. Word has length 103 [2023-11-23 07:06:59,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:06:59,397 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 176 transitions. [2023-11-23 07:06:59,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 07:06:59,398 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 176 transitions. [2023-11-23 07:06:59,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-23 07:06:59,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:06:59,399 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:06:59,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 07:06:59,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:06:59,612 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:06:59,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:06:59,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2035474218, now seen corresponding path program 1 times [2023-11-23 07:06:59,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:06:59,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544723180] [2023-11-23 07:06:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:06:59,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:06:59,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:07:01,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:07:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:07:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:07:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:07:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:07:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:07:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:07:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:07:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:07:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:07:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 07:07:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:07:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 07:07:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:07:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:07:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:01,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:07:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-23 07:07:02,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:07:02,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544723180] [2023-11-23 07:07:02,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544723180] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:07:02,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223375875] [2023-11-23 07:07:02,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:07:02,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:07:02,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:07:02,008 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:07:02,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 07:07:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:07:02,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 2842 conjuncts, 112 conjunts are in the unsatisfiable core [2023-11-23 07:07:02,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:07:02,689 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 07:07:02,694 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 07:07:03,127 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 07:07:03,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-23 07:07:03,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-23 07:07:03,146 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 07:07:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 07:07:31,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:07:31,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223375875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:07:31,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:07:31,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [12] total 34 [2023-11-23 07:07:31,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403393450] [2023-11-23 07:07:31,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:07:31,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 07:07:31,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:07:31,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 07:07:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1009, Unknown=13, NotChecked=0, Total=1122 [2023-11-23 07:07:31,488 INFO L87 Difference]: Start difference. First operand 127 states and 176 transitions. Second operand has 24 states, 19 states have (on average 2.526315789473684) internal successors, (48), 21 states have internal predecessors, (48), 11 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (17), 9 states have call predecessors, (17), 10 states have call successors, (17) [2023-11-23 07:07:35,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:07:40,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:07:42,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:07:44,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:07:46,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:07:48,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:07:50,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:07:52,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:07:55,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:07:59,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:01,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:03,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:05,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:07,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:09,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:14,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:16,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:23,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:25,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:27,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:29,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:32,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:34,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:36,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:38,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:40,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:42,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:44,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:46,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:48,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:50,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:52,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:54,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:56,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:08:58,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:00,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:02,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:04,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:07,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:09,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:11,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:13,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:15,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:17,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:19,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:21,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:23,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:25,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:27,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:29,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:31,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:33,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:35,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:09:35,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:09:35,777 INFO L93 Difference]: Finished difference Result 417 states and 571 transitions. [2023-11-23 07:09:35,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-23 07:09:35,777 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 2.526315789473684) internal successors, (48), 21 states have internal predecessors, (48), 11 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (17), 9 states have call predecessors, (17), 10 states have call successors, (17) Word has length 105 [2023-11-23 07:09:35,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:09:35,782 INFO L225 Difference]: With dead ends: 417 [2023-11-23 07:09:35,782 INFO L226 Difference]: Without dead ends: 354 [2023-11-23 07:09:35,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 102 SyntacticMatches, 14 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=344, Invalid=3420, Unknown=18, NotChecked=0, Total=3782 [2023-11-23 07:09:35,785 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 293 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 3036 mSolverCounterSat, 210 mSolverCounterUnsat, 55 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 3036 IncrementalHoareTripleChecker+Invalid, 55 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:09:35,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 782 Invalid, 3301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 3036 Invalid, 55 Unknown, 0 Unchecked, 112.7s Time] [2023-11-23 07:09:35,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2023-11-23 07:09:35,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 331. [2023-11-23 07:09:35,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 198 states have (on average 1.2171717171717171) internal successors, (241), 205 states have internal predecessors, (241), 96 states have call successors, (96), 31 states have call predecessors, (96), 36 states have return successors, (118), 94 states have call predecessors, (118), 93 states have call successors, (118) [2023-11-23 07:09:35,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 455 transitions. [2023-11-23 07:09:35,849 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 455 transitions. Word has length 105 [2023-11-23 07:09:35,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:09:35,850 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 455 transitions. [2023-11-23 07:09:35,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 2.526315789473684) internal successors, (48), 21 states have internal predecessors, (48), 11 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (17), 9 states have call predecessors, (17), 10 states have call successors, (17) [2023-11-23 07:09:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 455 transitions. [2023-11-23 07:09:35,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-23 07:09:35,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:09:35,852 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:09:35,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-23 07:09:36,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:09:36,068 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:09:36,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:09:36,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1558428500, now seen corresponding path program 1 times [2023-11-23 07:09:36,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:09:36,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360938342] [2023-11-23 07:09:36,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:09:36,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:09:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:09:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:09:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:09:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:09:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:09:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:09:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:09:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:09:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:09:37,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:09:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:09:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 07:09:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:37,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:09:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:38,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 07:09:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:38,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:09:38,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:38,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:09:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:38,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:09:38,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:38,131 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 07:09:38,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:09:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360938342] [2023-11-23 07:09:38,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360938342] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:09:38,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495979912] [2023-11-23 07:09:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:09:38,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:09:38,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:09:38,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:09:38,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 07:09:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:38,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 119 conjunts are in the unsatisfiable core [2023-11-23 07:09:38,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:09:38,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 07:09:38,776 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 07:09:38,780 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 07:09:39,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2023-11-23 07:09:39,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 07:09:39,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 14 [2023-11-23 07:09:39,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 07:09:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 58 proven. 24 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 07:09:40,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:09:42,161 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:09:42,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2023-11-23 07:09:42,170 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:09:42,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 21 [2023-11-23 07:09:42,322 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 30 treesize of output 24 [2023-11-23 07:09:42,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:09:42,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:09:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-23 07:09:42,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495979912] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:09:42,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:09:42,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [11, 21] total 38 [2023-11-23 07:09:42,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764740580] [2023-11-23 07:09:42,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:09:42,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 07:09:42,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:09:42,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 07:09:42,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 07:09:42,354 INFO L87 Difference]: Start difference. First operand 331 states and 455 transitions. Second operand has 17 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 9 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-23 07:09:46,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:09:46,437 INFO L93 Difference]: Finished difference Result 466 states and 650 transitions. [2023-11-23 07:09:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 07:09:46,438 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 9 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) Word has length 105 [2023-11-23 07:09:46,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:09:46,440 INFO L225 Difference]: With dead ends: 466 [2023-11-23 07:09:46,441 INFO L226 Difference]: Without dead ends: 381 [2023-11-23 07:09:46,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 202 SyntacticMatches, 14 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=193, Invalid=2159, Unknown=0, NotChecked=0, Total=2352 [2023-11-23 07:09:46,443 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 152 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:09:46,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 594 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-23 07:09:46,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-23 07:09:46,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 346. [2023-11-23 07:09:46,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 204 states have (on average 1.2107843137254901) internal successors, (247), 211 states have internal predecessors, (247), 105 states have call successors, (105), 31 states have call predecessors, (105), 36 states have return successors, (130), 103 states have call predecessors, (130), 102 states have call successors, (130) [2023-11-23 07:09:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 482 transitions. [2023-11-23 07:09:46,507 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 482 transitions. Word has length 105 [2023-11-23 07:09:46,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:09:46,508 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 482 transitions. [2023-11-23 07:09:46,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 3.076923076923077) internal successors, (40), 15 states have internal predecessors, (40), 9 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-23 07:09:46,508 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 482 transitions. [2023-11-23 07:09:46,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-23 07:09:46,510 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:09:46,510 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:09:46,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 07:09:46,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:09:46,724 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:09:46,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:09:46,725 INFO L85 PathProgramCache]: Analyzing trace with hash 920258248, now seen corresponding path program 1 times [2023-11-23 07:09:46,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:09:46,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959258657] [2023-11-23 07:09:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:09:46,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:09:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:09:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:09:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:09:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:09:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:09:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:09:47,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 07:09:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:09:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:09:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:09:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:09:47,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 07:09:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:09:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:47,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 07:09:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:09:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:48,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:09:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:48,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 07:09:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:48,207 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-23 07:09:48,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:09:48,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959258657] [2023-11-23 07:09:48,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959258657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:09:48,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:09:48,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 07:09:48,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486520425] [2023-11-23 07:09:48,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:09:48,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:09:48,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:09:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:09:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:09:48,209 INFO L87 Difference]: Start difference. First operand 346 states and 482 transitions. Second operand has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 5 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 07:09:50,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:09:50,826 INFO L93 Difference]: Finished difference Result 482 states and 668 transitions. [2023-11-23 07:09:50,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:09:50,827 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 5 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 106 [2023-11-23 07:09:50,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:09:50,830 INFO L225 Difference]: With dead ends: 482 [2023-11-23 07:09:50,830 INFO L226 Difference]: Without dead ends: 358 [2023-11-23 07:09:50,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:09:50,833 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 112 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:09:50,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 547 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 867 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 07:09:50,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2023-11-23 07:09:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 349. [2023-11-23 07:09:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 206 states have (on average 1.2087378640776698) internal successors, (249), 214 states have internal predecessors, (249), 105 states have call successors, (105), 31 states have call predecessors, (105), 37 states have return successors, (130), 103 states have call predecessors, (130), 102 states have call successors, (130) [2023-11-23 07:09:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 484 transitions. [2023-11-23 07:09:50,892 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 484 transitions. Word has length 106 [2023-11-23 07:09:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:09:50,893 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 484 transitions. [2023-11-23 07:09:50,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 10 states have internal predecessors, (42), 5 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 07:09:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 484 transitions. [2023-11-23 07:09:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 07:09:50,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:09:50,894 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:09:50,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 07:09:50,895 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:09:50,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:09:50,895 INFO L85 PathProgramCache]: Analyzing trace with hash 736845701, now seen corresponding path program 1 times [2023-11-23 07:09:50,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:09:50,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855453504] [2023-11-23 07:09:50,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:09:50,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:09:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:09:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:09:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:09:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:09:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:09:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:09:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:09:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:09:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:09:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:09:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:09:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:09:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 07:09:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 07:09:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 07:09:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:52,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:09:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:53,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:09:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:53,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:09:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:53,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 07:09:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:53,141 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 07:09:53,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:09:53,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855453504] [2023-11-23 07:09:53,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855453504] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:09:53,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158431553] [2023-11-23 07:09:53,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:09:53,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:09:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:09:53,143 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:09:53,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 07:09:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:09:53,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 2878 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-23 07:09:53,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:09:53,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 07:09:53,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:09:54,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-11-23 07:09:54,995 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-23 07:09:54,995 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:09:54,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158431553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:09:54,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:09:54,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [13] total 27 [2023-11-23 07:09:54,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554615949] [2023-11-23 07:09:54,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:09:54,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 07:09:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:09:54,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 07:09:54,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2023-11-23 07:09:54,997 INFO L87 Difference]: Start difference. First operand 349 states and 484 transitions. Second operand has 16 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 15 states have internal predecessors, (48), 7 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2023-11-23 07:09:58,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:10:00,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:10:03,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:10:05,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:10:07,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:10:09,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:10:11,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:10:13,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:10:15,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:10:15,585 INFO L93 Difference]: Finished difference Result 735 states and 1025 transitions. [2023-11-23 07:10:15,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 07:10:15,586 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 15 states have internal predecessors, (48), 7 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) Word has length 115 [2023-11-23 07:10:15,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:10:15,588 INFO L225 Difference]: With dead ends: 735 [2023-11-23 07:10:15,588 INFO L226 Difference]: Without dead ends: 428 [2023-11-23 07:10:15,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 124 SyntacticMatches, 16 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2023-11-23 07:10:15,590 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 215 mSDsluCounter, 924 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 144 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 2558 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:10:15,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1073 Invalid, 2558 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2406 Invalid, 8 Unknown, 0 Unchecked, 20.1s Time] [2023-11-23 07:10:15,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2023-11-23 07:10:15,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 407. [2023-11-23 07:10:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 237 states have (on average 1.2025316455696202) internal successors, (285), 247 states have internal predecessors, (285), 127 states have call successors, (127), 36 states have call predecessors, (127), 42 states have return successors, (167), 123 states have call predecessors, (167), 124 states have call successors, (167) [2023-11-23 07:10:15,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 579 transitions. [2023-11-23 07:10:15,668 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 579 transitions. Word has length 115 [2023-11-23 07:10:15,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:10:15,668 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 579 transitions. [2023-11-23 07:10:15,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 15 states have internal predecessors, (48), 7 states have call successors, (20), 4 states have call predecessors, (20), 6 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2023-11-23 07:10:15,669 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 579 transitions. [2023-11-23 07:10:15,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 07:10:15,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:10:15,671 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:10:15,695 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 07:10:15,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:15,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:10:15,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:10:15,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1437910279, now seen corresponding path program 1 times [2023-11-23 07:10:15,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:10:15,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594995080] [2023-11-23 07:10:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:15,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:10:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:10:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:10:17,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:10:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:10:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:10:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:10:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:10:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:10:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:10:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 07:10:17,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 07:10:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 07:10:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:17,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:10:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:10:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:18,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:10:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:18,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 07:10:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:18,176 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 07:10:18,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:10:18,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594995080] [2023-11-23 07:10:18,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594995080] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:10:18,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061843530] [2023-11-23 07:10:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:10:18,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:10:18,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:10:18,179 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:10:18,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 07:10:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:10:19,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 2873 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-23 07:10:19,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:10:19,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 07:10:19,192 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 26 treesize of output 15 [2023-11-23 07:10:21,309 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_18| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_16| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_18|)) (= (select (select |c_#memory_int#5| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_18|) 0) (select (select |c_#memory_int#5| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_16|) |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_13|)))) is different from true [2023-11-23 07:10:23,384 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_17| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_17| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_19|)) (= (select (select |c_#memory_int#5| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_19|) 0) (select (select |c_#memory_int#5| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_17|) |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_14|)))) is different from true [2023-11-23 07:10:25,451 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_18| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_20| Int) (|v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_15| Int)) (and (= (select (select |c_#memory_int#5| |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_18|) |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.offset_BEFORE_CALL_15|) (select (select |c_#memory_int#5| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_20|) 0)) (not (= |v_ULTIMATE.start_aws_byte_cursor_eq_~b#1.base_BEFORE_CALL_18| |v_ULTIMATE.start_aws_byte_cursor_eq_~a#1.base_BEFORE_CALL_20|)))) is different from true [2023-11-23 07:10:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 25 not checked. [2023-11-23 07:10:30,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:10:31,794 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 58 treesize of output 46 [2023-11-23 07:10:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-23 07:10:31,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061843530] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:10:31,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:10:31,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 13] total 36 [2023-11-23 07:10:31,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631778863] [2023-11-23 07:10:31,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:10:31,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-23 07:10:31,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:10:31,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-23 07:10:31,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=949, Unknown=5, NotChecked=192, Total=1260 [2023-11-23 07:10:31,877 INFO L87 Difference]: Start difference. First operand 407 states and 579 transitions. Second operand has 36 states, 35 states have (on average 3.2857142857142856) internal successors, (115), 31 states have internal predecessors, (115), 14 states have call successors, (53), 11 states have call predecessors, (53), 11 states have return successors, (51), 13 states have call predecessors, (51), 14 states have call successors, (51) [2023-11-23 07:10:37,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:10:41,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:10:43,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:10:45,317 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] Killed by 15