./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_hash_table_clear_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_hash_table_clear_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 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:39:42,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:39:42,515 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:39:42,541 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:39:42,541 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:39:42,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:39:42,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:39:42,568 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:39:42,569 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:39:42,573 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:39:42,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:39:42,573 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:39:42,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:39:42,575 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:39:42,576 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:39:42,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:39:42,576 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:39:42,576 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:39:42,577 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:39:42,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:39:42,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:39:42,577 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:39:42,578 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:39:42,578 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:39:42,579 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:39:42,579 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:39:42,579 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:39:42,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:39:42,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:39:42,580 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:39:42,581 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:39:42,581 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:39:42,581 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:39:42,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:39:42,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:39:42,582 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:39:42,582 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:39:42,582 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:39:42,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:39:42,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:39:42,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:39:42,819 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:39:42,821 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:39:42,823 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:39:42,824 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:39:42,825 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_hash_table_clear_harness.i [2023-11-23 08:39:43,951 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:39:44,313 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:39:44,313 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_hash_table_clear_harness.i [2023-11-23 08:39:44,348 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7705e8b56/21d9d2f52aa3495b984af2df22edb46d/FLAG98816e6aa [2023-11-23 08:39:44,361 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7705e8b56/21d9d2f52aa3495b984af2df22edb46d [2023-11-23 08:39:44,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:39:44,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:39:44,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:39:44,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:39:44,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:39:44,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:39:44" (1/1) ... [2023-11-23 08:39:44,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e6a0c8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:44, skipping insertion in model container [2023-11-23 08:39:44,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:39:44" (1/1) ... [2023-11-23 08:39:44,456 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:39:44,713 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_hash_table_clear_harness.i[4494,4507] [2023-11-23 08:39:44,729 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_hash_table_clear_harness.i[4554,4567] [2023-11-23 08:39:45,654 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,658 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,659 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,660 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,661 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,671 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,672 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,673 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,673 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,678 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,679 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,680 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,680 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:45,992 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:39:45,993 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:39:45,995 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:39:45,997 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:39:46,000 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:39:46,000 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:39:46,001 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:39:46,001 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:39:46,005 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:39:46,006 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:39:46,333 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,334 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,354 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,355 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,360 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,361 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,375 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,376 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,376 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,377 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,377 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,378 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:39:46,452 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:39:46,469 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_hash_table_clear_harness.i[4494,4507] [2023-11-23 08:39:46,469 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_hash_table_clear_harness.i[4554,4567] [2023-11-23 08:39:46,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,506 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,508 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,509 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,509 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,510 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,510 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,510 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,511 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,603 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:39:46,603 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:39:46,604 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:39:46,604 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:39:46,604 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:39:46,605 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:39:46,605 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:39:46,605 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:39:46,605 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:39:46,606 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:39:46,638 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7585-7596] [2023-11-23 08:39:46,708 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,709 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,713 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,715 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,717 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,717 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,728 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,729 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,729 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,730 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:39:46,746 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:39:46,893 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,893 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,893 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,893 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,894 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,894 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,894 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,894 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,894 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,894 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,894 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,894 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,895 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,895 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,895 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,895 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,895 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,895 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:39:46,901 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:39:46,902 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46 WrapperNode [2023-11-23 08:39:46,902 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:39:46,903 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:39:46,903 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:39:46,903 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:39:46,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46" (1/1) ... [2023-11-23 08:39:47,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46" (1/1) ... [2023-11-23 08:39:47,084 INFO L138 Inliner]: procedures = 773, calls = 2441, calls flagged for inlining = 68, calls inlined = 13, statements flattened = 611 [2023-11-23 08:39:47,085 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:39:47,086 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:39:47,086 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:39:47,086 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:39:47,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46" (1/1) ... [2023-11-23 08:39:47,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46" (1/1) ... [2023-11-23 08:39:47,111 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46" (1/1) ... [2023-11-23 08:39:47,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46" (1/1) ... [2023-11-23 08:39:47,149 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46" (1/1) ... [2023-11-23 08:39:47,156 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46" (1/1) ... [2023-11-23 08:39:47,164 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46" (1/1) ... [2023-11-23 08:39:47,181 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46" (1/1) ... [2023-11-23 08:39:47,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:39:47,191 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:39:47,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:39:47,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:39:47,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46" (1/1) ... [2023-11-23 08:39:47,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:39:47,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:39:47,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:39:47,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:39:47,318 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2023-11-23 08:39:47,318 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2023-11-23 08:39:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-23 08:39:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:39:47,319 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:39:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:39:47,319 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:39:47,320 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:39:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:39:47,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:39:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2023-11-23 08:39:47,320 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2023-11-23 08:39:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_clear [2023-11-23 08:39:47,320 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_clear [2023-11-23 08:39:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:39:47,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:39:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:39:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:39:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:39:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:39:47,321 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:39:47,321 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 08:39:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 08:39:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:39:47,322 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 08:39:47,322 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 08:39:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:39:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 08:39:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 08:39:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:39:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 08:39:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 08:39:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2023-11-23 08:39:47,323 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2023-11-23 08:39:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:39:47,323 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2023-11-23 08:39:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2023-11-23 08:39:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 08:39:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-23 08:39:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:39:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:39:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2023-11-23 08:39:47,324 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2023-11-23 08:39:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:39:47,324 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 08:39:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 08:39:47,325 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 08:39:47,325 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 08:39:47,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:39:47,563 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:39:47,565 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:39:48,169 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:39:48,328 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:39:48,328 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 08:39:48,329 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:39:48 BoogieIcfgContainer [2023-11-23 08:39:48,329 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:39:48,331 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:39:48,332 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:39:48,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:39:48,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:39:44" (1/3) ... [2023-11-23 08:39:48,338 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1fda4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:39:48, skipping insertion in model container [2023-11-23 08:39:48,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:39:46" (2/3) ... [2023-11-23 08:39:48,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1fda4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:39:48, skipping insertion in model container [2023-11-23 08:39:48,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:39:48" (3/3) ... [2023-11-23 08:39:48,342 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clear_harness.i [2023-11-23 08:39:48,356 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:39:48,357 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:39:48,407 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:39:48,417 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;@161dae65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:39:48,417 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:39:48,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 89 states have internal predecessors, (111), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-23 08:39:48,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 08:39:48,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:39:48,443 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:39:48,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:39:48,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:39:48,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1215665664, now seen corresponding path program 1 times [2023-11-23 08:39:48,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:39:48,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615312051] [2023-11-23 08:39:48,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:39:48,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:39:48,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:39:48,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800801569] [2023-11-23 08:39:48,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:39:48,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:39:48,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:39:48,697 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:39:48,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:39:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:49,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 08:39:49,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:39:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-23 08:39:49,224 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:39:49,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:39:49,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615312051] [2023-11-23 08:39:49,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:39:49,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800801569] [2023-11-23 08:39:49,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800801569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:39:49,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:39:49,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 08:39:49,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990101637] [2023-11-23 08:39:49,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:39:49,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 08:39:49,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:39:49,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 08:39:49,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:39:49,271 INFO L87 Difference]: Start difference. First operand has 149 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 89 states have internal predecessors, (111), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:39:49,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:39:49,480 INFO L93 Difference]: Finished difference Result 295 states and 409 transitions. [2023-11-23 08:39:49,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 08:39:49,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 126 [2023-11-23 08:39:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:39:49,493 INFO L225 Difference]: With dead ends: 295 [2023-11-23 08:39:49,493 INFO L226 Difference]: Without dead ends: 147 [2023-11-23 08:39:49,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 08:39:49,504 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 0 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:39:49,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 330 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:39:49,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-23 08:39:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2023-11-23 08:39:49,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 88 states have internal predecessors, (104), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-11-23 08:39:49,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 185 transitions. [2023-11-23 08:39:49,559 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 185 transitions. Word has length 126 [2023-11-23 08:39:49,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:39:49,560 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 185 transitions. [2023-11-23 08:39:49,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:39:49,561 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 185 transitions. [2023-11-23 08:39:49,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 08:39:49,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:39:49,569 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:39:49,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:39:49,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 08:39:49,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:39:49,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:39:49,786 INFO L85 PathProgramCache]: Analyzing trace with hash 194597310, now seen corresponding path program 1 times [2023-11-23 08:39:49,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:39:49,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233409517] [2023-11-23 08:39:49,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:39:49,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:39:49,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:39:49,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484739215] [2023-11-23 08:39:49,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:39:49,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:39:49,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:39:49,913 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:39:49,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:39:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:50,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 2335 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:39:50,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:39:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-23 08:39:50,398 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:39:50,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:39:50,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233409517] [2023-11-23 08:39:50,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:39:50,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484739215] [2023-11-23 08:39:50,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484739215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:39:50,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:39:50,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:39:50,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603367693] [2023-11-23 08:39:50,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:39:50,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:39:50,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:39:50,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:39:50,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:39:50,401 INFO L87 Difference]: Start difference. First operand 147 states and 185 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:39:50,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:39:50,598 INFO L93 Difference]: Finished difference Result 263 states and 331 transitions. [2023-11-23 08:39:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:39:50,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 126 [2023-11-23 08:39:50,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:39:50,600 INFO L225 Difference]: With dead ends: 263 [2023-11-23 08:39:50,600 INFO L226 Difference]: Without dead ends: 151 [2023-11-23 08:39:50,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:39:50,602 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 1 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:39:50,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 648 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:39:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-23 08:39:50,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-23 08:39:50,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 91 states have internal predecessors, (107), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2023-11-23 08:39:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 189 transitions. [2023-11-23 08:39:50,610 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 189 transitions. Word has length 126 [2023-11-23 08:39:50,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:39:50,610 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 189 transitions. [2023-11-23 08:39:50,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:39:50,611 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 189 transitions. [2023-11-23 08:39:50,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-23 08:39:50,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:39:50,612 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:39:50,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:39:50,827 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,SelfDestructingSolverStorable1 [2023-11-23 08:39:50,828 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:39:50,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:39:50,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2004290031, now seen corresponding path program 1 times [2023-11-23 08:39:50,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:39:50,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328702791] [2023-11-23 08:39:50,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:39:50,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:39:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:51,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:39:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:51,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:39:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:51,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:39:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:51,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:39:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:39:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:39:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:39:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:39:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:39:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:39:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:39:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:39:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:39:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:39:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:39:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:39:52,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:39:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:39:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:39:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:39:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 08:39:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:39:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,347 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-23 08:39:52,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:39:52,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328702791] [2023-11-23 08:39:52,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328702791] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:39:52,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641188237] [2023-11-23 08:39:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:39:52,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:39:52,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:39:52,349 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:39:52,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:39:52,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:52,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 2334 conjuncts, 94 conjunts are in the unsatisfiable core [2023-11-23 08:39:52,817 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:39:52,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:39:52,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:39:53,401 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-23 08:39:53,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 39 [2023-11-23 08:39:53,405 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 33 treesize of output 17 [2023-11-23 08:39:53,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:39:53,410 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 16 treesize of output 11 [2023-11-23 08:39:53,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:39:53,521 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 16 treesize of output 11 [2023-11-23 08:39:53,788 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:39:53,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-23 08:39:54,041 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 15 treesize of output 7 [2023-11-23 08:39:54,313 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 85 proven. 48 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-23 08:39:54,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:39:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-23 08:39:54,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641188237] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 08:39:54,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:39:54,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13, 29] total 44 [2023-11-23 08:39:54,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893108819] [2023-11-23 08:39:54,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:39:54,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:39:54,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:39:54,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:39:54,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1773, Unknown=0, NotChecked=0, Total=1892 [2023-11-23 08:39:54,639 INFO L87 Difference]: Start difference. First operand 151 states and 189 transitions. Second operand has 8 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 08:39:55,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:39:55,132 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2023-11-23 08:39:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:39:55,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 130 [2023-11-23 08:39:55,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:39:55,141 INFO L225 Difference]: With dead ends: 157 [2023-11-23 08:39:55,141 INFO L226 Difference]: Without dead ends: 155 [2023-11-23 08:39:55,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 254 SyntacticMatches, 14 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=131, Invalid=2031, Unknown=0, NotChecked=0, Total=2162 [2023-11-23 08:39:55,145 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 20 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:39:55,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1088 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:39:55,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-23 08:39:55,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-23 08:39:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 93 states have (on average 1.1827956989247312) internal successors, (110), 94 states have internal predecessors, (110), 41 states have call successors, (41), 19 states have call predecessors, (41), 20 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2023-11-23 08:39:55,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 192 transitions. [2023-11-23 08:39:55,166 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 192 transitions. Word has length 130 [2023-11-23 08:39:55,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:39:55,168 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 192 transitions. [2023-11-23 08:39:55,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (26), 4 states have call predecessors, (26), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-23 08:39:55,169 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 192 transitions. [2023-11-23 08:39:55,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 08:39:55,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:39:55,171 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:39:55,188 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 08:39:55,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:39:55,386 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:39:55,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:39:55,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1264098286, now seen corresponding path program 1 times [2023-11-23 08:39:55,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:39:55,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625749483] [2023-11-23 08:39:55,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:39:55,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:39:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:39:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:39:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:39:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:39:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:39:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:39:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:39:56,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:39:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:39:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:39:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:39:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:39:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:39:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:39:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:39:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:39:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:39:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:39:56,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:39:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:39:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 08:39:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:39:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 08:39:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:56,666 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-23 08:39:56,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:39:56,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625749483] [2023-11-23 08:39:56,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625749483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:39:56,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979919827] [2023-11-23 08:39:56,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:39:56,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:39:56,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:39:56,686 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:39:56,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:39:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:39:57,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 2347 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-23 08:39:57,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:39:57,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:39:57,426 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 08:39:57,426 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:39:57,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979919827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:39:57,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:39:57,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2023-11-23 08:39:57,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507195951] [2023-11-23 08:39:57,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:39:57,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 08:39:57,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:39:57,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 08:39:57,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2023-11-23 08:39:57,429 INFO L87 Difference]: Start difference. First operand 155 states and 192 transitions. Second operand has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 08:40:00,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 08:40:02,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:04,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:06,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:08,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:11,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:13,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:15,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:17,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:19,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:19,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:40:19,205 INFO L93 Difference]: Finished difference Result 320 states and 390 transitions. [2023-11-23 08:40:19,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 08:40:19,207 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 136 [2023-11-23 08:40:19,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:40:19,209 INFO L225 Difference]: With dead ends: 320 [2023-11-23 08:40:19,209 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 08:40:19,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-11-23 08:40:19,210 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 92 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 18 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:40:19,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 971 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 520 Invalid, 10 Unknown, 0 Unchecked, 21.6s Time] [2023-11-23 08:40:19,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 08:40:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 210. [2023-11-23 08:40:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 129 states have (on average 1.186046511627907) internal successors, (153), 131 states have internal predecessors, (153), 49 states have call successors, (49), 29 states have call predecessors, (49), 31 states have return successors, (51), 49 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-23 08:40:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 253 transitions. [2023-11-23 08:40:19,241 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 253 transitions. Word has length 136 [2023-11-23 08:40:19,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:40:19,243 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 253 transitions. [2023-11-23 08:40:19,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 4 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 08:40:19,243 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 253 transitions. [2023-11-23 08:40:19,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 08:40:19,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:40:19,245 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:40:19,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:40:19,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:40:19,445 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:40:19,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:40:19,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2103131948, now seen corresponding path program 1 times [2023-11-23 08:40:19,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:40:19,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374430387] [2023-11-23 08:40:19,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:40:19,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:40:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:40:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:40:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:40:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:40:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:40:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:40:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:40:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:19,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:40:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 08:40:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:40:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 08:40:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:40:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:40:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:40:19,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:40:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:19,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:40:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:20,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 08:40:20,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:40:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:20,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 08:40:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-23 08:40:20,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:40:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374430387] [2023-11-23 08:40:20,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374430387] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:40:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118708077] [2023-11-23 08:40:20,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:40:20,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:40:20,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:40:20,024 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:40:20,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:40:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:20,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 2342 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:40:20,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:40:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 08:40:20,497 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:40:20,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118708077] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:40:20,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:40:20,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 08:40:20,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004784490] [2023-11-23 08:40:20,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:40:20,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:40:20,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:40:20,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:40:20,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:40:20,499 INFO L87 Difference]: Start difference. First operand 210 states and 253 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 08:40:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:40:20,703 INFO L93 Difference]: Finished difference Result 330 states and 401 transitions. [2023-11-23 08:40:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:40:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 136 [2023-11-23 08:40:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:40:20,705 INFO L225 Difference]: With dead ends: 330 [2023-11-23 08:40:20,705 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 08:40:20,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:40:20,706 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 13 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:40:20,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 610 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:40:20,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 08:40:20,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-23 08:40:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 131 states have (on average 1.1755725190839694) internal successors, (154), 134 states have internal predecessors, (154), 50 states have call successors, (50), 29 states have call predecessors, (50), 32 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-11-23 08:40:20,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 258 transitions. [2023-11-23 08:40:20,721 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 258 transitions. Word has length 136 [2023-11-23 08:40:20,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:40:20,727 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 258 transitions. [2023-11-23 08:40:20,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 08:40:20,728 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 258 transitions. [2023-11-23 08:40:20,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 08:40:20,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:40:20,729 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:40:20,744 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 08:40:20,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:40:20,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:40:20,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:40:20,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1947227406, now seen corresponding path program 1 times [2023-11-23 08:40:20,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:40:20,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233202959] [2023-11-23 08:40:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:40:20,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:40:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:40:21,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:40:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:40:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:40:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:21,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:40:21,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:40:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:40:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:40:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:40:21,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 08:40:21,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:40:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:40:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:40:21,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:40:21,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:40:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:40:21,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:40:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 08:40:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:40:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 08:40:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-23 08:40:21,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:40:21,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233202959] [2023-11-23 08:40:21,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233202959] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:40:21,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854058272] [2023-11-23 08:40:21,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:40:21,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:40:21,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:40:21,589 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 08:40:21,612 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 08:40:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:21,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 2371 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 08:40:21,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:40:22,074 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2023-11-23 08:40:22,074 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:40:22,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854058272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:40:22,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:40:22,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2023-11-23 08:40:22,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161000424] [2023-11-23 08:40:22,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:40:22,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:40:22,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:40:22,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:40:22,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:40:22,078 INFO L87 Difference]: Start difference. First operand 214 states and 258 transitions. Second operand has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-23 08:40:22,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:40:22,587 INFO L93 Difference]: Finished difference Result 341 states and 416 transitions. [2023-11-23 08:40:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:40:22,587 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 142 [2023-11-23 08:40:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:40:22,588 INFO L225 Difference]: With dead ends: 341 [2023-11-23 08:40:22,589 INFO L226 Difference]: Without dead ends: 224 [2023-11-23 08:40:22,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:40:22,589 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 3 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:40:22,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1184 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:40:22,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-23 08:40:22,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 214. [2023-11-23 08:40:22,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 131 states have (on average 1.16793893129771) internal successors, (153), 134 states have internal predecessors, (153), 50 states have call successors, (50), 29 states have call predecessors, (50), 32 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-11-23 08:40:22,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 257 transitions. [2023-11-23 08:40:22,601 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 257 transitions. Word has length 142 [2023-11-23 08:40:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:40:22,601 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 257 transitions. [2023-11-23 08:40:22,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (28), 2 states have call predecessors, (28), 5 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-23 08:40:22,602 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 257 transitions. [2023-11-23 08:40:22,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-23 08:40:22,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:40:22,603 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:40:22,618 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 08:40:22,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:40:22,816 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:40:22,817 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:40:22,817 INFO L85 PathProgramCache]: Analyzing trace with hash -173725310, now seen corresponding path program 1 times [2023-11-23 08:40:22,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:40:22,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141617736] [2023-11-23 08:40:22,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:40:22,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:40:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:40:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:25,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:40:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:25,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:40:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:25,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:40:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:40:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:40:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:40:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:40:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:40:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:40:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 08:40:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 08:40:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:40:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:40:26,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:40:26,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:40:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:40:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:40:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 08:40:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:40:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:40:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-23 08:40:26,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:40:26,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141617736] [2023-11-23 08:40:26,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141617736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:40:26,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133541538] [2023-11-23 08:40:26,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:40:26,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:40:26,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:40:26,997 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 08:40:27,021 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 08:40:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:27,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 2402 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-23 08:40:27,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:40:27,706 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 08:40:27,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:40:27,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133541538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:40:27,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:40:27,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [28] total 38 [2023-11-23 08:40:27,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304039614] [2023-11-23 08:40:27,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:40:27,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:40:27,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:40:27,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:40:27,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1315, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 08:40:27,708 INFO L87 Difference]: Start difference. First operand 214 states and 257 transitions. Second operand has 12 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-23 08:40:28,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:40:28,311 INFO L93 Difference]: Finished difference Result 347 states and 422 transitions. [2023-11-23 08:40:28,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:40:28,311 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) Word has length 148 [2023-11-23 08:40:28,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:40:28,313 INFO L225 Difference]: With dead ends: 347 [2023-11-23 08:40:28,313 INFO L226 Difference]: Without dead ends: 229 [2023-11-23 08:40:28,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 183 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=1460, Unknown=0, NotChecked=0, Total=1560 [2023-11-23 08:40:28,314 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 3 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:40:28,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1626 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:40:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-23 08:40:28,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 216. [2023-11-23 08:40:28,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 132 states have (on average 1.1666666666666667) internal successors, (154), 136 states have internal predecessors, (154), 50 states have call successors, (50), 29 states have call predecessors, (50), 33 states have return successors, (55), 50 states have call predecessors, (55), 49 states have call successors, (55) [2023-11-23 08:40:28,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 259 transitions. [2023-11-23 08:40:28,324 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 259 transitions. Word has length 148 [2023-11-23 08:40:28,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:40:28,324 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 259 transitions. [2023-11-23 08:40:28,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-23 08:40:28,325 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 259 transitions. [2023-11-23 08:40:28,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 08:40:28,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:40:28,326 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:40:28,347 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 08:40:28,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:40:28,548 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:40:28,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:40:28,548 INFO L85 PathProgramCache]: Analyzing trace with hash -328970521, now seen corresponding path program 1 times [2023-11-23 08:40:28,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:40:28,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804605102] [2023-11-23 08:40:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:40:28,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:40:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:31,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:40:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:40:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:40:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 08:40:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:40:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 08:40:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 08:40:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:40:31,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 08:40:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:40:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:40:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 08:40:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 08:40:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:40:31,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 08:40:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 08:40:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 08:40:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:40:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:31,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:40:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:32,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:40:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:32,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 08:40:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-23 08:40:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-23 08:40:32,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:40:32,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804605102] [2023-11-23 08:40:32,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804605102] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:40:32,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081265431] [2023-11-23 08:40:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:40:32,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:40:32,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:40:32,092 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 08:40:32,093 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 08:40:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:40:32,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 2406 conjuncts, 112 conjunts are in the unsatisfiable core [2023-11-23 08:40:32,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:40:32,899 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-11-23 08:40:32,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:40:32,935 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 22 treesize of output 17 [2023-11-23 08:40:32,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:40:32,962 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 11 treesize of output 7 [2023-11-23 08:40:34,000 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:40:34,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2023-11-23 08:40:34,012 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 08:40:34,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 08:40:36,096 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_hash_table_clear_harness_~#map~0#1.base_BEFORE_CALL_40| Int)) (<= (+ 2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_clear_harness_~#map~0#1.base_BEFORE_CALL_40|) 0)) |v_ULTIMATE.start_aws_hash_table_clear_harness_~#map~0#1.base_BEFORE_CALL_40|)) (exists ((|v_ULTIMATE.start_aws_hash_table_clear_harness_~#map~0#1.base_BEFORE_CALL_39| Int)) (<= (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_clear_harness_~#map~0#1.base_BEFORE_CALL_39|) 0) 2) |v_ULTIMATE.start_aws_hash_table_clear_harness_~#map~0#1.base_BEFORE_CALL_39|))) is different from true [2023-11-23 08:40:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 125 proven. 3 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-23 08:40:36,251 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:40:36,606 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 8 treesize of output 4 [2023-11-23 08:40:39,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081265431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:40:39,907 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:40:39,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 21] total 47 [2023-11-23 08:40:39,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446520096] [2023-11-23 08:40:39,907 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:40:39,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2023-11-23 08:40:39,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:40:39,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2023-11-23 08:40:39,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=3864, Unknown=2, NotChecked=124, Total=4160 [2023-11-23 08:40:39,910 INFO L87 Difference]: Start difference. First operand 216 states and 259 transitions. Second operand has 47 states, 38 states have (on average 3.236842105263158) internal successors, (123), 37 states have internal predecessors, (123), 20 states have call successors, (55), 8 states have call predecessors, (55), 13 states have return successors, (50), 19 states have call predecessors, (50), 20 states have call successors, (50) [2023-11-23 08:40:44,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:46,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:52,902 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:54,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:57,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:40:59,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:01,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:03,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:05,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:07,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:09,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:11,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:13,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:15,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:17,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:19,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:21,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:24,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:26,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:29,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:41:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:41:29,185 INFO L93 Difference]: Finished difference Result 394 states and 479 transitions. [2023-11-23 08:41:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-23 08:41:29,186 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 38 states have (on average 3.236842105263158) internal successors, (123), 37 states have internal predecessors, (123), 20 states have call successors, (55), 8 states have call predecessors, (55), 13 states have return successors, (50), 19 states have call predecessors, (50), 20 states have call successors, (50) Word has length 150 [2023-11-23 08:41:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:41:29,187 INFO L225 Difference]: With dead ends: 394 [2023-11-23 08:41:29,187 INFO L226 Difference]: Without dead ends: 238 [2023-11-23 08:41:29,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 244 SyntacticMatches, 3 SemanticMatches, 112 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2326 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=856, Invalid=11802, Unknown=2, NotChecked=222, Total=12882 [2023-11-23 08:41:29,191 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 427 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 4928 mSolverCounterSat, 274 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 5493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 4928 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 45.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:41:29,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 1000 Invalid, 5493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 4928 Invalid, 20 Unknown, 271 Unchecked, 45.9s Time] [2023-11-23 08:41:29,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-23 08:41:29,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 226. [2023-11-23 08:41:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 140 states have (on average 1.1642857142857144) internal successors, (163), 145 states have internal predecessors, (163), 50 states have call successors, (50), 30 states have call predecessors, (50), 35 states have return successors, (58), 50 states have call predecessors, (58), 49 states have call successors, (58) [2023-11-23 08:41:29,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 271 transitions. [2023-11-23 08:41:29,205 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 271 transitions. Word has length 150 [2023-11-23 08:41:29,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:41:29,205 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 271 transitions. [2023-11-23 08:41:29,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 38 states have (on average 3.236842105263158) internal successors, (123), 37 states have internal predecessors, (123), 20 states have call successors, (55), 8 states have call predecessors, (55), 13 states have return successors, (50), 19 states have call predecessors, (50), 20 states have call successors, (50) [2023-11-23 08:41:29,205 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 271 transitions. [2023-11-23 08:41:29,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-23 08:41:29,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:41:29,207 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:41:29,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 08:41:29,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 08:41:29,424 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:41:29,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:41:29,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1079527602, now seen corresponding path program 1 times [2023-11-23 08:41:29,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:41:29,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311906053] [2023-11-23 08:41:29,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:41:29,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:41:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:41:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:41:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:41:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:41:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:41:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:41:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:41:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:30,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:41:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:41:30,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:41:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:41:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:41:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:41:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:41:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:41:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:41:30,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:41:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:41:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 08:41:30,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 08:41:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 08:41:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 08:41:30,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:41:30,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311906053] [2023-11-23 08:41:30,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311906053] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:41:30,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655198921] [2023-11-23 08:41:30,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:41:30,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:41:30,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:41:30,441 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:41:30,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 08:41:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:30,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 2405 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 08:41:30,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:41:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-11-23 08:41:31,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:41:31,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655198921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:41:31,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:41:31,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2023-11-23 08:41:31,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180035039] [2023-11-23 08:41:31,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:41:31,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:41:31,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:41:31,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:41:31,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:41:31,070 INFO L87 Difference]: Start difference. First operand 226 states and 271 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 08:41:31,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:41:31,307 INFO L93 Difference]: Finished difference Result 321 states and 387 transitions. [2023-11-23 08:41:31,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:41:31,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) Word has length 152 [2023-11-23 08:41:31,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:41:31,309 INFO L225 Difference]: With dead ends: 321 [2023-11-23 08:41:31,309 INFO L226 Difference]: Without dead ends: 216 [2023-11-23 08:41:31,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:41:31,310 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 53 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:41:31,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 720 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:41:31,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-23 08:41:31,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-11-23 08:41:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 133 states have (on average 1.1428571428571428) internal successors, (152), 136 states have internal predecessors, (152), 49 states have call successors, (49), 30 states have call predecessors, (49), 33 states have return successors, (54), 49 states have call predecessors, (54), 48 states have call successors, (54) [2023-11-23 08:41:31,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 255 transitions. [2023-11-23 08:41:31,324 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 255 transitions. Word has length 152 [2023-11-23 08:41:31,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:41:31,326 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 255 transitions. [2023-11-23 08:41:31,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 4 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 08:41:31,327 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 255 transitions. [2023-11-23 08:41:31,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-23 08:41:31,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:41:31,328 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:41:31,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 08:41:31,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:41:31,544 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:41:31,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:41:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1319152940, now seen corresponding path program 1 times [2023-11-23 08:41:31,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:41:31,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135714434] [2023-11-23 08:41:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:41:31,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:41:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:31,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:31,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:41:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:31,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:41:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:41:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:41:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:41:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:41:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:41:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:41:32,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:41:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:41:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:41:32,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:41:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:41:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:41:32,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:41:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:41:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:41:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:41:32,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:41:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:41:32,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 08:41:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 08:41:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:32,224 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-11-23 08:41:32,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:41:32,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135714434] [2023-11-23 08:41:32,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135714434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:41:32,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:41:32,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 08:41:32,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202670767] [2023-11-23 08:41:32,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:41:32,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:41:32,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:41:32,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:41:32,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:41:32,229 INFO L87 Difference]: Start difference. First operand 216 states and 255 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (30), 5 states have call predecessors, (30), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 08:41:33,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:41:33,523 INFO L93 Difference]: Finished difference Result 315 states and 377 transitions. [2023-11-23 08:41:33,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:41:33,524 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (30), 5 states have call predecessors, (30), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) Word has length 158 [2023-11-23 08:41:33,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:41:33,525 INFO L225 Difference]: With dead ends: 315 [2023-11-23 08:41:33,525 INFO L226 Difference]: Without dead ends: 226 [2023-11-23 08:41:33,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:41:33,526 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 107 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:41:33,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 418 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 08:41:33,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-23 08:41:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 216. [2023-11-23 08:41:33,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 133 states have (on average 1.1353383458646618) internal successors, (151), 136 states have internal predecessors, (151), 49 states have call successors, (49), 30 states have call predecessors, (49), 33 states have return successors, (54), 49 states have call predecessors, (54), 48 states have call successors, (54) [2023-11-23 08:41:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 254 transitions. [2023-11-23 08:41:33,537 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 254 transitions. Word has length 158 [2023-11-23 08:41:33,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:41:33,538 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 254 transitions. [2023-11-23 08:41:33,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 7 states have internal predecessors, (67), 3 states have call successors, (30), 5 states have call predecessors, (30), 3 states have return successors, (26), 2 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 08:41:33,538 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 254 transitions. [2023-11-23 08:41:33,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-23 08:41:33,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:41:33,539 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:41:33,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 08:41:33,539 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:41:33,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:41:33,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1905366840, now seen corresponding path program 1 times [2023-11-23 08:41:33,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:41:33,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089064548] [2023-11-23 08:41:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:41:33,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:41:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:41:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:41:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:41:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:41:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:41:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:41:34,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:41:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:41:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:41:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:41:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:41:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:41:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:41:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:41:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:41:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:41:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:41:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:41:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:41:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:41:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 08:41:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 08:41:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-23 08:41:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,300 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-23 08:41:34,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:41:34,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089064548] [2023-11-23 08:41:34,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089064548] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:41:34,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306687900] [2023-11-23 08:41:34,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:41:34,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:41:34,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:41:34,302 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:41:34,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 08:41:34,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:34,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 2465 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-23 08:41:34,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:41:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-23 08:41:34,892 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:41:34,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306687900] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:41:34,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:41:34,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 18 [2023-11-23 08:41:34,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836203627] [2023-11-23 08:41:34,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:41:34,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:41:34,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:41:34,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:41:34,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:41:34,894 INFO L87 Difference]: Start difference. First operand 216 states and 254 transitions. Second operand has 12 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-23 08:41:35,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:41:35,598 INFO L93 Difference]: Finished difference Result 311 states and 368 transitions. [2023-11-23 08:41:35,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:41:35,598 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) Word has length 164 [2023-11-23 08:41:35,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:41:35,599 INFO L225 Difference]: With dead ends: 311 [2023-11-23 08:41:35,599 INFO L226 Difference]: Without dead ends: 224 [2023-11-23 08:41:35,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:41:35,600 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 3 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1653 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:41:35,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1653 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:41:35,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-23 08:41:35,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 222. [2023-11-23 08:41:35,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 137 states have (on average 1.1313868613138687) internal successors, (155), 140 states have internal predecessors, (155), 49 states have call successors, (49), 30 states have call predecessors, (49), 35 states have return successors, (56), 51 states have call predecessors, (56), 48 states have call successors, (56) [2023-11-23 08:41:35,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 260 transitions. [2023-11-23 08:41:35,613 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 260 transitions. Word has length 164 [2023-11-23 08:41:35,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:41:35,613 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 260 transitions. [2023-11-23 08:41:35,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 3 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (27), 5 states have call predecessors, (27), 3 states have call successors, (27) [2023-11-23 08:41:35,614 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 260 transitions. [2023-11-23 08:41:35,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 08:41:35,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:41:35,615 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:41:35,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 08:41:35,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 08:41:35,830 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:41:35,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:41:35,830 INFO L85 PathProgramCache]: Analyzing trace with hash -463100237, now seen corresponding path program 1 times [2023-11-23 08:41:35,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:41:35,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940721942] [2023-11-23 08:41:35,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:41:35,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:41:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:41:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:41:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:41:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 08:41:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:41:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 08:41:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:41:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:41:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:41:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:41:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:41:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 08:41:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:41:36,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 08:41:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:41:36,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:41:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:41:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:41:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:41:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:41:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:41:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:41:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2023-11-23 08:41:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 08:41:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:36,573 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-23 08:41:36,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:41:36,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940721942] [2023-11-23 08:41:36,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940721942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:41:36,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756574350] [2023-11-23 08:41:36,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:41:36,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:41:36,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:41:36,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:41:36,623 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 08:41:37,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:37,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:41:37,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:41:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2023-11-23 08:41:37,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:41:37,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756574350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:41:37,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:41:37,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 10 [2023-11-23 08:41:37,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423475013] [2023-11-23 08:41:37,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:41:37,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:41:37,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:41:37,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:41:37,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:41:37,119 INFO L87 Difference]: Start difference. First operand 222 states and 260 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-23 08:41:37,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:41:37,448 INFO L93 Difference]: Finished difference Result 387 states and 452 transitions. [2023-11-23 08:41:37,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:41:37,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 166 [2023-11-23 08:41:37,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:41:37,449 INFO L225 Difference]: With dead ends: 387 [2023-11-23 08:41:37,449 INFO L226 Difference]: Without dead ends: 222 [2023-11-23 08:41:37,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:41:37,450 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 2 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:41:37,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 720 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:41:37,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-23 08:41:37,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2023-11-23 08:41:37,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 137 states have (on average 1.1094890510948905) internal successors, (152), 140 states have internal predecessors, (152), 49 states have call successors, (49), 30 states have call predecessors, (49), 35 states have return successors, (56), 51 states have call predecessors, (56), 48 states have call successors, (56) [2023-11-23 08:41:37,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 257 transitions. [2023-11-23 08:41:37,481 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 257 transitions. Word has length 166 [2023-11-23 08:41:37,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:41:37,482 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 257 transitions. [2023-11-23 08:41:37,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-23 08:41:37,482 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 257 transitions. [2023-11-23 08:41:37,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-23 08:41:37,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:41:37,483 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:41:37,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 08:41:37,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 08:41:37,700 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:41:37,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:41:37,700 INFO L85 PathProgramCache]: Analyzing trace with hash 599329130, now seen corresponding path program 1 times [2023-11-23 08:41:37,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:41:37,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869092815] [2023-11-23 08:41:37,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:41:37,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:41:37,744 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:41:37,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001563465] [2023-11-23 08:41:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:41:37,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:41:37,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:41:37,746 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:41:37,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 08:41:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:41:39,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 2577 conjuncts, 238 conjunts are in the unsatisfiable core [2023-11-23 08:41:39,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:41:39,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:41:40,081 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-23 08:41:40,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-23 08:41:40,101 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 5 treesize of output 3 [2023-11-23 08:41:40,715 INFO L349 Elim1Store]: treesize reduction 387, result has 28.9 percent of original size [2023-11-23 08:41:40,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 379 [2023-11-23 08:41:46,637 INFO L349 Elim1Store]: treesize reduction 73, result has 18.9 percent of original size [2023-11-23 08:41:46,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 50 treesize of output 35 [2023-11-23 08:41:48,300 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 5 treesize of output 3 [2023-11-23 08:41:48,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:41:48,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 08:41:48,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-23 08:41:48,400 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 11 treesize of output 7 [2023-11-23 08:41:48,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:41:48,408 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-11-23 08:41:48,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 08:41:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 156 proven. 12 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 08:41:49,872 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:41:50,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:41:50,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869092815] [2023-11-23 08:41:50,073 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:41:50,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001563465] [2023-11-23 08:41:50,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001563465] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:41:50,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:41:50,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2023-11-23 08:41:50,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515424808] [2023-11-23 08:41:50,073 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 08:41:50,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-23 08:41:50,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:41:50,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-23 08:41:50,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1207, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 08:41:50,075 INFO L87 Difference]: Start difference. First operand 222 states and 257 transitions. Second operand has 34 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 28 states have internal predecessors, (95), 11 states have call successors, (32), 6 states have call predecessors, (32), 11 states have return successors, (28), 12 states have call predecessors, (28), 11 states have call successors, (28) [2023-11-23 08:41:54,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:42:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:42:11,241 INFO L93 Difference]: Finished difference Result 368 states and 424 transitions. [2023-11-23 08:42:11,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-23 08:42:11,242 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 28 states have internal predecessors, (95), 11 states have call successors, (32), 6 states have call predecessors, (32), 11 states have return successors, (28), 12 states have call predecessors, (28), 11 states have call successors, (28) Word has length 172 [2023-11-23 08:42:11,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:42:11,243 INFO L225 Difference]: With dead ends: 368 [2023-11-23 08:42:11,243 INFO L226 Difference]: Without dead ends: 237 [2023-11-23 08:42:11,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 201 SyntacticMatches, 11 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=393, Invalid=3897, Unknown=0, NotChecked=0, Total=4290 [2023-11-23 08:42:11,245 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 220 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 3751 mSolverCounterSat, 131 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 3883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 3751 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:42:11,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 402 Invalid, 3883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [131 Valid, 3751 Invalid, 1 Unknown, 0 Unchecked, 17.4s Time] [2023-11-23 08:42:11,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-11-23 08:42:11,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 233. [2023-11-23 08:42:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 146 states have (on average 1.1027397260273972) internal successors, (161), 149 states have internal predecessors, (161), 49 states have call successors, (49), 32 states have call predecessors, (49), 37 states have return successors, (56), 51 states have call predecessors, (56), 48 states have call successors, (56) [2023-11-23 08:42:11,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 266 transitions. [2023-11-23 08:42:11,262 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 266 transitions. Word has length 172 [2023-11-23 08:42:11,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:42:11,263 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 266 transitions. [2023-11-23 08:42:11,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 27 states have (on average 3.5185185185185186) internal successors, (95), 28 states have internal predecessors, (95), 11 states have call successors, (32), 6 states have call predecessors, (32), 11 states have return successors, (28), 12 states have call predecessors, (28), 11 states have call successors, (28) [2023-11-23 08:42:11,263 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 266 transitions. [2023-11-23 08:42:11,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-23 08:42:11,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:42:11,264 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:42:11,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 08:42:11,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 08:42:11,471 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:42:11,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:42:11,471 INFO L85 PathProgramCache]: Analyzing trace with hash 2011139639, now seen corresponding path program 1 times [2023-11-23 08:42:11,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:42:11,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292671286] [2023-11-23 08:42:11,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:11,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:42:11,531 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:42:11,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175194156] [2023-11-23 08:42:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:11,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:11,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:42:11,533 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:42:11,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 08:42:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:42:12,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 2579 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-23 08:42:12,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:42:12,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:42:12,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 08:42:12,506 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-23 08:42:12,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:42:12,515 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 30 treesize of output 25 [2023-11-23 08:42:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 125 proven. 5 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 08:42:13,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:42:14,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:42:14,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292671286] [2023-11-23 08:42:14,201 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:42:14,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175194156] [2023-11-23 08:42:14,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175194156] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:42:14,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:42:14,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2023-11-23 08:42:14,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987820983] [2023-11-23 08:42:14,201 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 08:42:14,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 08:42:14,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:42:14,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 08:42:14,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-11-23 08:42:14,203 INFO L87 Difference]: Start difference. First operand 233 states and 266 transitions. Second operand has 19 states, 15 states have (on average 5.8) internal successors, (87), 17 states have internal predecessors, (87), 7 states have call successors, (32), 3 states have call predecessors, (32), 7 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) [2023-11-23 08:42:16,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:42:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:42:19,284 INFO L93 Difference]: Finished difference Result 395 states and 457 transitions. [2023-11-23 08:42:19,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-23 08:42:19,284 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 5.8) internal successors, (87), 17 states have internal predecessors, (87), 7 states have call successors, (32), 3 states have call predecessors, (32), 7 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) Word has length 173 [2023-11-23 08:42:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:42:19,285 INFO L225 Difference]: With dead ends: 395 [2023-11-23 08:42:19,286 INFO L226 Difference]: Without dead ends: 236 [2023-11-23 08:42:19,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=160, Invalid=1246, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 08:42:19,287 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 26 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:42:19,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1428 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-23 08:42:19,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-23 08:42:19,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 233. [2023-11-23 08:42:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 146 states have (on average 1.095890410958904) internal successors, (160), 149 states have internal predecessors, (160), 49 states have call successors, (49), 32 states have call predecessors, (49), 37 states have return successors, (56), 51 states have call predecessors, (56), 48 states have call successors, (56) [2023-11-23 08:42:19,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 265 transitions. [2023-11-23 08:42:19,301 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 265 transitions. Word has length 173 [2023-11-23 08:42:19,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:42:19,301 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 265 transitions. [2023-11-23 08:42:19,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 5.8) internal successors, (87), 17 states have internal predecessors, (87), 7 states have call successors, (32), 3 states have call predecessors, (32), 7 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) [2023-11-23 08:42:19,302 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 265 transitions. [2023-11-23 08:42:19,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-23 08:42:19,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:42:19,303 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:42:19,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-23 08:42:19,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 08:42:19,520 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:42:19,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:42:19,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1338669986, now seen corresponding path program 2 times [2023-11-23 08:42:19,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:42:19,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997839051] [2023-11-23 08:42:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:42:19,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:42:19,568 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:42:19,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115930469] [2023-11-23 08:42:19,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:42:19,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:42:19,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:42:19,570 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:42:19,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 08:42:20,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:42:20,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:42:20,114 INFO L262 TraceCheckSpWp]: Trace formula consists of 2581 conjuncts, 203 conjunts are in the unsatisfiable core [2023-11-23 08:42:20,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:42:20,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:42:20,627 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-23 08:42:20,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-23 08:42:20,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 08:42:59,325 WARN L293 SmtUtils]: Spent 34.86s on a formula simplification. DAG size of input: 1250 DAG size of output: 260 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-23 08:42:59,325 INFO L349 Elim1Store]: treesize reduction 4379, result has 11.1 percent of original size [2023-11-23 08:42:59,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 7 stores, 16 select indices, 16 select index equivalence classes, 1 disjoint index pairs (out of 120 index pairs), introduced 23 new quantified variables, introduced 231 case distinctions, treesize of input 1200 treesize of output 2155 Killed by 15