./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_hash_byte_cursor_ptr_harness.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_hash_byte_cursor_ptr_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 ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:14:34,488 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:14:34,559 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:14:34,564 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:14:34,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:14:34,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:14:34,597 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:14:34,597 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:14:34,597 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:14:34,600 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:14:34,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:14:34,601 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:14:34,602 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:14:34,603 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:14:34,603 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:14:34,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:14:34,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:14:34,604 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:14:34,604 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:14:34,604 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:14:34,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:14:34,605 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:14:34,605 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:14:34,605 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:14:34,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:14:34,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:14:34,606 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:14:34,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:14:34,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:14:34,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:14:34,608 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:14:34,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:14:34,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:14:34,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:14:34,608 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:14:34,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:14:34,609 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:14:34,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:14:34,615 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:14:34,615 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ab48078691743837960e369bd318845908490844fac300de97818a03fa84d8a1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:14:34,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:14:34,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:14:34,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:14:34,877 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:14:34,878 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:14:34,879 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2023-11-23 07:14:35,998 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:14:36,476 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:14:36,476 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2023-11-23 07:14:36,510 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6434b0483/09732957d28b480794436d3958fdae98/FLAGd213a8f1c [2023-11-23 07:14:36,524 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6434b0483/09732957d28b480794436d3958fdae98 [2023-11-23 07:14:36,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:14:36,528 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:14:36,530 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:14:36,531 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:14:36,535 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:14:36,536 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:14:36" (1/1) ... [2023-11-23 07:14:36,536 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f5a414 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:36, skipping insertion in model container [2023-11-23 07:14:36,536 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:14:36" (1/1) ... [2023-11-23 07:14:36,685 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:14:36,919 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_byte_cursor_ptr_harness.i[4498,4511] [2023-11-23 07:14:36,927 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_byte_cursor_ptr_harness.i[4558,4571] [2023-11-23 07:14:37,658 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:37,661 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:37,662 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:37,662 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:37,665 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:37,676 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:37,677 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:37,678 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:37,678 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:37,950 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:14:37,951 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:14:37,952 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:14:37,956 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:14:37,960 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:14:37,960 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:14:37,961 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:14:37,964 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:14:37,965 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:14:37,966 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:14:38,225 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,226 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,438 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,439 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,458 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,460 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,468 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,468 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,479 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,480 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,480 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,481 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,481 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,482 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,482 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:14:38,562 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:14:38,579 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_byte_cursor_ptr_harness.i[4498,4511] [2023-11-23 07:14:38,580 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_byte_cursor_ptr_harness.i[4558,4571] [2023-11-23 07:14:38,611 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,611 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,611 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,612 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,612 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,616 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,616 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,618 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,618 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,638 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:14:38,639 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:14:38,639 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:14:38,639 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:14:38,640 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:14:38,640 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:14:38,641 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:14:38,641 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:14:38,642 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:14:38,642 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:14:38,756 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8288] [2023-11-23 07:14:38,758 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,760 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,771 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8774-8785] [2023-11-23 07:14:38,835 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,836 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,841 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,841 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,844 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,844 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,856 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,857 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,858 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,858 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,858 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,859 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,859 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:14:38,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:14:39,096 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,096 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,096 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,096 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,097 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,097 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,097 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,097 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,097 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,097 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,097 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,097 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,097 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,098 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,098 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,098 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,098 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,098 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,098 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,098 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:14:39,104 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:14:39,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39 WrapperNode [2023-11-23 07:14:39,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:14:39,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:14:39,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:14:39,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:14:39,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (1/1) ... [2023-11-23 07:14:39,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (1/1) ... [2023-11-23 07:14:39,286 INFO L138 Inliner]: procedures = 774, calls = 3579, calls flagged for inlining = 77, calls inlined = 6, statements flattened = 793 [2023-11-23 07:14:39,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:14:39,287 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:14:39,288 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:14:39,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:14:39,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (1/1) ... [2023-11-23 07:14:39,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (1/1) ... [2023-11-23 07:14:39,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (1/1) ... [2023-11-23 07:14:39,439 INFO L188 MemorySlicer]: Split 613 memory accesses to 10 slices as follows [2, 84, 5, 256, 236, 7, 7, 3, 10, 3]. 42 percent of accesses are in the largest equivalence class. The 504 initializations are split as follows [2, 0, 5, 256, 236, 1, 1, 0, 0, 3]. The 10 writes are split as follows [0, 0, 0, 0, 0, 4, 4, 1, 1, 0]. [2023-11-23 07:14:39,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (1/1) ... [2023-11-23 07:14:39,440 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (1/1) ... [2023-11-23 07:14:39,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (1/1) ... [2023-11-23 07:14:39,503 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (1/1) ... [2023-11-23 07:14:39,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (1/1) ... [2023-11-23 07:14:39,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (1/1) ... [2023-11-23 07:14:39,551 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:14:39,552 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:14:39,552 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:14:39,552 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:14:39,553 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (1/1) ... [2023-11-23 07:14:39,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:14:39,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:14:39,579 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 07:14:39,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 07:14:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:14:39,615 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:14:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:14:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:14:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:14:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:14:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:14:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:14:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 07:14:39,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 07:14:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 07:14:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-23 07:14:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:14:39,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:14:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:14:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:14:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:14:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:14:39,617 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:14:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:14:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:14:39,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:14:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:14:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 07:14:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 07:14:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-23 07:14:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:14:39,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:14:39,619 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:14:39,619 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:14:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:14:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:14:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:14:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:14:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:14:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:14:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 07:14:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 07:14:39,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 07:14:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 07:14:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-23 07:14:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure hashlittle2 [2023-11-23 07:14:39,621 INFO L138 BoogieDeclarations]: Found implementation of procedure hashlittle2 [2023-11-23 07:14:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:14:39,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:14:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:14:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:14:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:14:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:14:39,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 07:14:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 07:14:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 07:14:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-23 07:14:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 07:14:39,623 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 07:14:39,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:14:39,624 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:14:39,624 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:14:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:14:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:14:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:14:39,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:14:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:14:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:14:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:14:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 07:14:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-23 07:14:39,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-23 07:14:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:14:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:14:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:14:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:14:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:14:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:14:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 07:14:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 07:14:39,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 07:14:39,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-23 07:14:39,969 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:14:39,971 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:14:40,959 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !true; [2023-11-23 07:14:40,961 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:14:41,118 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:14:41,118 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-23 07:14:41,118 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:14:41 BoogieIcfgContainer [2023-11-23 07:14:41,118 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:14:41,120 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:14:41,120 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:14:41,122 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:14:41,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:14:36" (1/3) ... [2023-11-23 07:14:41,123 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35705f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:14:41, skipping insertion in model container [2023-11-23 07:14:41,123 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:14:39" (2/3) ... [2023-11-23 07:14:41,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35705f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:14:41, skipping insertion in model container [2023-11-23 07:14:41,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:14:41" (3/3) ... [2023-11-23 07:14:41,125 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_byte_cursor_ptr_harness.i [2023-11-23 07:14:41,137 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:14:41,138 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:14:41,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:14:41,180 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;@3b429dcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:14:41,180 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:14:41,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 263 states have (on average 1.703422053231939) internal successors, (448), 263 states have internal predecessors, (448), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-23 07:14:41,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 07:14:41,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:41,196 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:41,196 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:41,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash 56840522, now seen corresponding path program 1 times [2023-11-23 07:14:41,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:41,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855912501] [2023-11-23 07:14:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:41,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:41,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:41,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:41,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:41,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:14:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:41,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:14:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:41,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:14:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:41,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:14:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:41,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:14:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:41,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:14:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:41,803 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 07:14:41,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:41,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855912501] [2023-11-23 07:14:41,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855912501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:41,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:14:41,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 07:14:41,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371564463] [2023-11-23 07:14:41,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:41,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 07:14:41,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:41,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 07:14:41,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 07:14:41,832 INFO L87 Difference]: Start difference. First operand has 283 states, 263 states have (on average 1.703422053231939) internal successors, (448), 263 states have internal predecessors, (448), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:14:42,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:42,392 INFO L93 Difference]: Finished difference Result 564 states and 953 transitions. [2023-11-23 07:14:42,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 07:14:42,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2023-11-23 07:14:42,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:42,406 INFO L225 Difference]: With dead ends: 564 [2023-11-23 07:14:42,409 INFO L226 Difference]: Without dead ends: 281 [2023-11-23 07:14:42,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 07:14:42,421 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 26 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:42,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 799 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:14:42,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-23 07:14:42,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-11-23 07:14:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 261 states have (on average 1.6896551724137931) internal successors, (441), 262 states have internal predecessors, (441), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 07:14:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 466 transitions. [2023-11-23 07:14:42,493 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 466 transitions. Word has length 65 [2023-11-23 07:14:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:42,493 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 466 transitions. [2023-11-23 07:14:42,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:14:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 466 transitions. [2023-11-23 07:14:42,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 07:14:42,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:42,502 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:42,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 07:14:42,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:42,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:42,503 INFO L85 PathProgramCache]: Analyzing trace with hash -368473700, now seen corresponding path program 1 times [2023-11-23 07:14:42,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:42,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265686524] [2023-11-23 07:14:42,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:42,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:43,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:43,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:43,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:14:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:14:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:43,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:14:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:43,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:14:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:43,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:14:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:43,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:14:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:43,380 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 07:14:43,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:43,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265686524] [2023-11-23 07:14:43,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265686524] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:14:43,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221020932] [2023-11-23 07:14:43,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:43,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:14:43,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:14:43,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:14:43,407 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 07:14:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:43,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 2615 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:14:43,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:14:43,947 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 07:14:43,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:14:43,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221020932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:43,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:14:43,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-23 07:14:43,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064737364] [2023-11-23 07:14:43,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:43,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:14:43,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:43,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:14:43,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:14:43,951 INFO L87 Difference]: Start difference. First operand 281 states and 466 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:14:44,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:44,093 INFO L93 Difference]: Finished difference Result 549 states and 918 transitions. [2023-11-23 07:14:44,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:14:44,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2023-11-23 07:14:44,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:44,097 INFO L225 Difference]: With dead ends: 549 [2023-11-23 07:14:44,097 INFO L226 Difference]: Without dead ends: 283 [2023-11-23 07:14:44,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:14:44,098 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 24 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:44,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1338 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:14:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-23 07:14:44,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-23 07:14:44,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 262 states have (on average 1.6870229007633588) internal successors, (442), 264 states have internal predecessors, (442), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2023-11-23 07:14:44,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 469 transitions. [2023-11-23 07:14:44,109 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 469 transitions. Word has length 65 [2023-11-23 07:14:44,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:44,110 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 469 transitions. [2023-11-23 07:14:44,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:14:44,110 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 469 transitions. [2023-11-23 07:14:44,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 07:14:44,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:44,112 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:44,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 07:14:44,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:14:44,328 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:44,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:44,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1103358313, now seen corresponding path program 1 times [2023-11-23 07:14:44,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:44,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446909458] [2023-11-23 07:14:44,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:44,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:44,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:44,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:14:44,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:44,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:14:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:44,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:14:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:44,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:14:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:45,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:14:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:14:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 07:14:45,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:45,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446909458] [2023-11-23 07:14:45,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446909458] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:14:45,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802178067] [2023-11-23 07:14:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:45,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:14:45,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:14:45,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:14:45,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 07:14:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:45,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:14:45,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:14:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 07:14:45,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:14:45,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802178067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:45,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:14:45,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-11-23 07:14:45,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5894252] [2023-11-23 07:14:45,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:45,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:14:45,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:45,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:14:45,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:14:45,681 INFO L87 Difference]: Start difference. First operand 283 states and 469 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:14:45,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:45,900 INFO L93 Difference]: Finished difference Result 548 states and 913 transitions. [2023-11-23 07:14:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:14:45,901 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2023-11-23 07:14:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:45,902 INFO L225 Difference]: With dead ends: 548 [2023-11-23 07:14:45,902 INFO L226 Difference]: Without dead ends: 283 [2023-11-23 07:14:45,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:14:45,903 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 32 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:45,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1781 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:14:45,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-23 07:14:45,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2023-11-23 07:14:45,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 262 states have (on average 1.6870229007633588) internal successors, (442), 264 states have internal predecessors, (442), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-23 07:14:45,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 468 transitions. [2023-11-23 07:14:45,912 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 468 transitions. Word has length 67 [2023-11-23 07:14:45,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:45,912 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 468 transitions. [2023-11-23 07:14:45,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:14:45,912 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 468 transitions. [2023-11-23 07:14:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 07:14:45,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:45,913 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:45,939 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:14:46,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 07:14:46,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:46,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash -942064516, now seen corresponding path program 2 times [2023-11-23 07:14:46,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:46,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027386523] [2023-11-23 07:14:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:46,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:46,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:46,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:46,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:46,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:14:46,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:46,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:14:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:46,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:14:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:14:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:47,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:14:47,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:14:47,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 07:14:47,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:47,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027386523] [2023-11-23 07:14:47,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027386523] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:14:47,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917799694] [2023-11-23 07:14:47,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:14:47,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:14:47,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:14:47,129 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:14:47,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 07:14:47,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:14:47,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:14:47,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 2625 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 07:14:47,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:14:47,924 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 07:14:47,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2023-11-23 07:14:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 07:14:48,028 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:14:48,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917799694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:48,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:14:48,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-23 07:14:48,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541270071] [2023-11-23 07:14:48,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:48,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:14:48,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:48,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:14:48,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:14:48,030 INFO L87 Difference]: Start difference. First operand 283 states and 468 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:14:48,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:48,348 INFO L93 Difference]: Finished difference Result 311 states and 502 transitions. [2023-11-23 07:14:48,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:14:48,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2023-11-23 07:14:48,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:48,349 INFO L225 Difference]: With dead ends: 311 [2023-11-23 07:14:48,350 INFO L226 Difference]: Without dead ends: 281 [2023-11-23 07:14:48,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:14:48,350 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 38 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:48,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 2228 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:14:48,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-11-23 07:14:48,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2023-11-23 07:14:48,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 261 states have (on average 1.685823754789272) internal successors, (440), 262 states have internal predecessors, (440), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 07:14:48,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 465 transitions. [2023-11-23 07:14:48,358 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 465 transitions. Word has length 69 [2023-11-23 07:14:48,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:48,359 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 465 transitions. [2023-11-23 07:14:48,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:14:48,359 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 465 transitions. [2023-11-23 07:14:48,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-23 07:14:48,360 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:48,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:48,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:14:48,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:14:48,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:48,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:48,579 INFO L85 PathProgramCache]: Analyzing trace with hash 590835831, now seen corresponding path program 1 times [2023-11-23 07:14:48,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:48,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000903673] [2023-11-23 07:14:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:48,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:49,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:14:49,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:49,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:14:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:14:49,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:49,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:14:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:49,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:14:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:14:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:49,310 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 07:14:49,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:49,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000903673] [2023-11-23 07:14:49,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000903673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:49,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:14:49,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 07:14:49,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972371698] [2023-11-23 07:14:49,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:49,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:14:49,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:49,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:14:49,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:14:49,312 INFO L87 Difference]: Start difference. First operand 281 states and 465 transitions. Second operand has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 07:14:50,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:50,862 INFO L93 Difference]: Finished difference Result 292 states and 479 transitions. [2023-11-23 07:14:50,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:14:50,863 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 71 [2023-11-23 07:14:50,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:50,864 INFO L225 Difference]: With dead ends: 292 [2023-11-23 07:14:50,864 INFO L226 Difference]: Without dead ends: 290 [2023-11-23 07:14:50,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:14:50,865 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 47 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:50,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 3342 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:14:50,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2023-11-23 07:14:50,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 289. [2023-11-23 07:14:50,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 266 states have (on average 1.6729323308270676) internal successors, (445), 268 states have internal predecessors, (445), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2023-11-23 07:14:50,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 476 transitions. [2023-11-23 07:14:50,888 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 476 transitions. Word has length 71 [2023-11-23 07:14:50,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:50,889 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 476 transitions. [2023-11-23 07:14:50,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 07:14:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 476 transitions. [2023-11-23 07:14:50,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 07:14:50,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:50,890 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:50,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 07:14:50,891 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:50,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:50,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1405869743, now seen corresponding path program 1 times [2023-11-23 07:14:50,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:50,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558952048] [2023-11-23 07:14:50,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:50,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:51,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:51,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:51,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:14:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:51,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:14:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:51,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:14:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:51,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:14:51,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:51,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:14:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:51,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:14:51,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 07:14:52,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:52,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558952048] [2023-11-23 07:14:52,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558952048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:52,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:14:52,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 07:14:52,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78365964] [2023-11-23 07:14:52,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:52,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:14:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:14:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:14:52,094 INFO L87 Difference]: Start difference. First operand 289 states and 476 transitions. Second operand has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:14:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:54,007 INFO L93 Difference]: Finished difference Result 553 states and 918 transitions. [2023-11-23 07:14:54,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 07:14:54,008 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2023-11-23 07:14:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:54,010 INFO L225 Difference]: With dead ends: 553 [2023-11-23 07:14:54,011 INFO L226 Difference]: Without dead ends: 524 [2023-11-23 07:14:54,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:14:54,012 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 436 mSDsluCounter, 3227 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 3607 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:54,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 3607 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:14:54,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-11-23 07:14:54,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 308. [2023-11-23 07:14:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 283 states have (on average 1.6819787985865724) internal successors, (476), 286 states have internal predecessors, (476), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2023-11-23 07:14:54,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 510 transitions. [2023-11-23 07:14:54,030 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 510 transitions. Word has length 75 [2023-11-23 07:14:54,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:54,032 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 510 transitions. [2023-11-23 07:14:54,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:14:54,033 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 510 transitions. [2023-11-23 07:14:54,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 07:14:54,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:54,037 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:54,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 07:14:54,037 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:54,038 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:54,038 INFO L85 PathProgramCache]: Analyzing trace with hash -782746197, now seen corresponding path program 1 times [2023-11-23 07:14:54,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:54,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14566165] [2023-11-23 07:14:54,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:54,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:54,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:54,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:54,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:14:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:54,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:14:54,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:54,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:14:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:54,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:14:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:54,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:14:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:54,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:14:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:54,478 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 07:14:54,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:54,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14566165] [2023-11-23 07:14:54,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14566165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:54,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:14:54,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:14:54,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520195816] [2023-11-23 07:14:54,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:54,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:14:54,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:54,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:14:54,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:14:54,481 INFO L87 Difference]: Start difference. First operand 308 states and 510 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:14:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:54,923 INFO L93 Difference]: Finished difference Result 423 states and 683 transitions. [2023-11-23 07:14:54,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:14:54,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 82 [2023-11-23 07:14:54,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:54,925 INFO L225 Difference]: With dead ends: 423 [2023-11-23 07:14:54,925 INFO L226 Difference]: Without dead ends: 321 [2023-11-23 07:14:54,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:14:54,926 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 31 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:54,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1180 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:14:54,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-23 07:14:54,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 318. [2023-11-23 07:14:54,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 293 states have (on average 1.658703071672355) internal successors, (486), 296 states have internal predecessors, (486), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2023-11-23 07:14:54,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 520 transitions. [2023-11-23 07:14:54,937 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 520 transitions. Word has length 82 [2023-11-23 07:14:54,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:54,938 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 520 transitions. [2023-11-23 07:14:54,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:14:54,938 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 520 transitions. [2023-11-23 07:14:54,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 07:14:54,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:54,939 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:54,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 07:14:54,939 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:54,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:54,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1709187411, now seen corresponding path program 1 times [2023-11-23 07:14:54,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:54,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855052394] [2023-11-23 07:14:54,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:54,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:55,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:55,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:55,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:55,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:14:55,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:55,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:14:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:14:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:55,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:14:55,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:14:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:55,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:14:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 07:14:56,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:56,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855052394] [2023-11-23 07:14:56,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855052394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:56,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:14:56,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 07:14:56,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806424394] [2023-11-23 07:14:56,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:56,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:14:56,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:56,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:14:56,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:14:56,073 INFO L87 Difference]: Start difference. First operand 318 states and 520 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:14:58,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:58,092 INFO L93 Difference]: Finished difference Result 577 states and 943 transitions. [2023-11-23 07:14:58,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 07:14:58,093 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 82 [2023-11-23 07:14:58,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:58,096 INFO L225 Difference]: With dead ends: 577 [2023-11-23 07:14:58,096 INFO L226 Difference]: Without dead ends: 548 [2023-11-23 07:14:58,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:14:58,097 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 420 mSDsluCounter, 3661 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 4051 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:58,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 4051 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 07:14:58,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2023-11-23 07:14:58,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 338. [2023-11-23 07:14:58,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 313 states have (on average 1.6613418530351438) internal successors, (520), 316 states have internal predecessors, (520), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2023-11-23 07:14:58,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 554 transitions. [2023-11-23 07:14:58,111 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 554 transitions. Word has length 82 [2023-11-23 07:14:58,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:58,111 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 554 transitions. [2023-11-23 07:14:58,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:14:58,112 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 554 transitions. [2023-11-23 07:14:58,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-23 07:14:58,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:58,113 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:58,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 07:14:58,113 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:58,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:58,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1681426701, now seen corresponding path program 1 times [2023-11-23 07:14:58,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:58,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515728961] [2023-11-23 07:14:58,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:58,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:14:59,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:14:59,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:14:59,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:14:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:14:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:14:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:14:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:14:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,667 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-23 07:14:59,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:59,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515728961] [2023-11-23 07:14:59,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515728961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:59,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:14:59,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 07:14:59,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864904064] [2023-11-23 07:14:59,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:59,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:14:59,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:59,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:14:59,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:14:59,670 INFO L87 Difference]: Start difference. First operand 338 states and 554 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 07:15:01,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:01,353 INFO L93 Difference]: Finished difference Result 427 states and 677 transitions. [2023-11-23 07:15:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:15:01,353 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 87 [2023-11-23 07:15:01,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:01,355 INFO L225 Difference]: With dead ends: 427 [2023-11-23 07:15:01,355 INFO L226 Difference]: Without dead ends: 402 [2023-11-23 07:15:01,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:15:01,356 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 138 mSDsluCounter, 2394 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:01,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 2799 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 07:15:01,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2023-11-23 07:15:01,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 345. [2023-11-23 07:15:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 317 states have (on average 1.6529968454258674) internal successors, (524), 320 states have internal predecessors, (524), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (22), 17 states have call predecessors, (22), 16 states have call successors, (22) [2023-11-23 07:15:01,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 563 transitions. [2023-11-23 07:15:01,376 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 563 transitions. Word has length 87 [2023-11-23 07:15:01,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:01,377 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 563 transitions. [2023-11-23 07:15:01,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 07:15:01,377 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 563 transitions. [2023-11-23 07:15:01,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 07:15:01,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:01,378 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:01,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 07:15:01,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:01,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:01,379 INFO L85 PathProgramCache]: Analyzing trace with hash -246940729, now seen corresponding path program 1 times [2023-11-23 07:15:01,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:01,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194764102] [2023-11-23 07:15:01,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:01,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:01,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:15:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:15:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:02,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:15:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:02,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:15:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:02,174 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-23 07:15:02,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:02,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194764102] [2023-11-23 07:15:02,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194764102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:02,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:15:02,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 07:15:02,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126199942] [2023-11-23 07:15:02,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:02,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:15:02,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:02,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:15:02,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:15:02,177 INFO L87 Difference]: Start difference. First operand 345 states and 563 transitions. Second operand has 9 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:15:03,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:03,858 INFO L93 Difference]: Finished difference Result 352 states and 569 transitions. [2023-11-23 07:15:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:15:03,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 88 [2023-11-23 07:15:03,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:03,862 INFO L225 Difference]: With dead ends: 352 [2023-11-23 07:15:03,862 INFO L226 Difference]: Without dead ends: 345 [2023-11-23 07:15:03,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:15:03,863 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 44 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:03,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3346 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 07:15:03,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-23 07:15:03,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2023-11-23 07:15:03,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 317 states have (on average 1.6529968454258674) internal successors, (524), 320 states have internal predecessors, (524), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (21), 17 states have call predecessors, (21), 16 states have call successors, (21) [2023-11-23 07:15:03,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 562 transitions. [2023-11-23 07:15:03,878 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 562 transitions. Word has length 88 [2023-11-23 07:15:03,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:03,878 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 562 transitions. [2023-11-23 07:15:03,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:15:03,879 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 562 transitions. [2023-11-23 07:15:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 07:15:03,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:03,881 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:03,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 07:15:03,881 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:03,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:03,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1192246696, now seen corresponding path program 1 times [2023-11-23 07:15:03,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:03,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376877822] [2023-11-23 07:15:03,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:03,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:15:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:04,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:15:04,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,303 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 07:15:04,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:04,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376877822] [2023-11-23 07:15:04,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376877822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:04,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:15:04,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:15:04,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492378740] [2023-11-23 07:15:04,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:04,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:15:04,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:04,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:15:04,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:15:04,305 INFO L87 Difference]: Start difference. First operand 345 states and 562 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:15:05,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:05,009 INFO L93 Difference]: Finished difference Result 479 states and 760 transitions. [2023-11-23 07:15:05,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:15:05,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2023-11-23 07:15:05,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:05,011 INFO L225 Difference]: With dead ends: 479 [2023-11-23 07:15:05,011 INFO L226 Difference]: Without dead ends: 370 [2023-11-23 07:15:05,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:15:05,014 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 36 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:05,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1156 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:15:05,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-23 07:15:05,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 367. [2023-11-23 07:15:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 339 states have (on average 1.6106194690265487) internal successors, (546), 342 states have internal predecessors, (546), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (21), 17 states have call predecessors, (21), 16 states have call successors, (21) [2023-11-23 07:15:05,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 584 transitions. [2023-11-23 07:15:05,032 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 584 transitions. Word has length 88 [2023-11-23 07:15:05,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:05,032 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 584 transitions. [2023-11-23 07:15:05,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:15:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 584 transitions. [2023-11-23 07:15:05,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 07:15:05,034 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:05,034 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:05,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 07:15:05,035 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:05,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:05,035 INFO L85 PathProgramCache]: Analyzing trace with hash 490133316, now seen corresponding path program 1 times [2023-11-23 07:15:05,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:05,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588802612] [2023-11-23 07:15:05,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:05,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:05,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:05,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:05,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:05,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:05,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:15:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:05,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:06,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:15:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:06,107 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 07:15:06,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:06,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588802612] [2023-11-23 07:15:06,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588802612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:06,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:15:06,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 07:15:06,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503135606] [2023-11-23 07:15:06,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:06,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:15:06,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:06,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:15:06,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:15:06,109 INFO L87 Difference]: Start difference. First operand 367 states and 584 transitions. Second operand has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:15:07,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:07,977 INFO L93 Difference]: Finished difference Result 628 states and 994 transitions. [2023-11-23 07:15:07,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 07:15:07,978 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2023-11-23 07:15:07,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:07,980 INFO L225 Difference]: With dead ends: 628 [2023-11-23 07:15:07,980 INFO L226 Difference]: Without dead ends: 599 [2023-11-23 07:15:07,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:15:07,981 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 419 mSDsluCounter, 2925 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:07,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 3316 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:15:07,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2023-11-23 07:15:07,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 393. [2023-11-23 07:15:07,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 365 states have (on average 1.6054794520547946) internal successors, (586), 368 states have internal predecessors, (586), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (21), 17 states have call predecessors, (21), 16 states have call successors, (21) [2023-11-23 07:15:08,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 624 transitions. [2023-11-23 07:15:08,000 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 624 transitions. Word has length 88 [2023-11-23 07:15:08,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:08,000 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 624 transitions. [2023-11-23 07:15:08,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:15:08,001 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 624 transitions. [2023-11-23 07:15:08,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 07:15:08,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:08,002 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:08,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 07:15:08,002 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:08,003 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:08,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1420427775, now seen corresponding path program 1 times [2023-11-23 07:15:08,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:08,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698969616] [2023-11-23 07:15:08,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:08,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:08,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:08,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:08,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:08,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:08,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:08,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:15:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:09,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:09,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:09,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:15:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:09,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:15:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:15:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:09,289 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 07:15:09,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:09,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698969616] [2023-11-23 07:15:09,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698969616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:09,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:15:09,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 07:15:09,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762824927] [2023-11-23 07:15:09,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:09,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 07:15:09,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:09,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 07:15:09,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:15:09,294 INFO L87 Difference]: Start difference. First operand 393 states and 624 transitions. Second operand has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 07:15:11,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:11,700 INFO L93 Difference]: Finished difference Result 600 states and 957 transitions. [2023-11-23 07:15:11,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:15:11,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 92 [2023-11-23 07:15:11,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:11,702 INFO L225 Difference]: With dead ends: 600 [2023-11-23 07:15:11,703 INFO L226 Difference]: Without dead ends: 582 [2023-11-23 07:15:11,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-23 07:15:11,704 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 435 mSDsluCounter, 4358 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 4745 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:11,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 4745 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 07:15:11,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-11-23 07:15:11,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 386. [2023-11-23 07:15:11,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 361 states have (on average 1.6094182825484764) internal successors, (581), 364 states have internal predecessors, (581), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2023-11-23 07:15:11,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 614 transitions. [2023-11-23 07:15:11,718 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 614 transitions. Word has length 92 [2023-11-23 07:15:11,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:11,719 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 614 transitions. [2023-11-23 07:15:11,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 07:15:11,719 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 614 transitions. [2023-11-23 07:15:11,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 07:15:11,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:11,720 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:11,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 07:15:11,721 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:11,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1836295881, now seen corresponding path program 1 times [2023-11-23 07:15:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:11,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636330947] [2023-11-23 07:15:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:11,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:12,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:12,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:12,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:12,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:12,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:15:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:12,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:12,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 07:15:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 07:15:12,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636330947] [2023-11-23 07:15:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636330947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:15:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248512283] [2023-11-23 07:15:12,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:12,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:15:12,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:15:12,938 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:15:12,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 07:15:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-23 07:15:13,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:15:13,796 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 07:15:13,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:15:14,267 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 07:15:14,268 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 07:15:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 07:15:14,583 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:15:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 07:15:15,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248512283] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:15:15,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:15:15,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 11] total 39 [2023-11-23 07:15:15,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6491495] [2023-11-23 07:15:15,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:15:15,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-23 07:15:15,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:15,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-23 07:15:15,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1343, Unknown=0, NotChecked=0, Total=1482 [2023-11-23 07:15:15,136 INFO L87 Difference]: Start difference. First operand 386 states and 614 transitions. Second operand has 39 states, 36 states have (on average 5.166666666666667) internal successors, (186), 34 states have internal predecessors, (186), 14 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) [2023-11-23 07:15:29,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:29,090 INFO L93 Difference]: Finished difference Result 2636 states and 4244 transitions. [2023-11-23 07:15:29,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-23 07:15:29,091 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 5.166666666666667) internal successors, (186), 34 states have internal predecessors, (186), 14 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) Word has length 92 [2023-11-23 07:15:29,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:29,098 INFO L225 Difference]: With dead ends: 2636 [2023-11-23 07:15:29,098 INFO L226 Difference]: Without dead ends: 2496 [2023-11-23 07:15:29,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 180 SyntacticMatches, 5 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5406 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1688, Invalid=14568, Unknown=0, NotChecked=0, Total=16256 [2023-11-23 07:15:29,102 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 8729 mSDsluCounter, 8401 mSDsCounter, 0 mSdLazyCounter, 3042 mSolverCounterSat, 319 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8743 SdHoareTripleChecker+Valid, 8777 SdHoareTripleChecker+Invalid, 3384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 3042 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:29,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8743 Valid, 8777 Invalid, 3384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 3042 Invalid, 23 Unknown, 0 Unchecked, 4.0s Time] [2023-11-23 07:15:29,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2496 states. [2023-11-23 07:15:29,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2496 to 1607. [2023-11-23 07:15:29,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1513 states have (on average 1.6080634500991409) internal successors, (2433), 1521 states have internal predecessors, (2433), 60 states have call successors, (60), 27 states have call predecessors, (60), 33 states have return successors, (75), 58 states have call predecessors, (75), 56 states have call successors, (75) [2023-11-23 07:15:29,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2568 transitions. [2023-11-23 07:15:29,153 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2568 transitions. Word has length 92 [2023-11-23 07:15:29,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:29,153 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2568 transitions. [2023-11-23 07:15:29,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 5.166666666666667) internal successors, (186), 34 states have internal predecessors, (186), 14 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) [2023-11-23 07:15:29,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2568 transitions. [2023-11-23 07:15:29,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 07:15:29,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:29,158 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:29,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 07:15:29,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:15:29,370 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:29,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:29,370 INFO L85 PathProgramCache]: Analyzing trace with hash 325500995, now seen corresponding path program 1 times [2023-11-23 07:15:29,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:29,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784423730] [2023-11-23 07:15:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:29,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:30,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:30,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:30,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:30,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:30,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:15:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:30,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:30,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:15:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:30,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 07:15:30,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:30,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 07:15:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:30,740 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-23 07:15:30,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:30,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784423730] [2023-11-23 07:15:30,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784423730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:30,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:15:30,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 07:15:30,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554165025] [2023-11-23 07:15:30,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:30,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:15:30,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:30,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:15:30,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:15:30,742 INFO L87 Difference]: Start difference. First operand 1607 states and 2568 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 07:15:32,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:32,465 INFO L93 Difference]: Finished difference Result 1937 states and 2992 transitions. [2023-11-23 07:15:32,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:15:32,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 98 [2023-11-23 07:15:32,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:32,471 INFO L225 Difference]: With dead ends: 1937 [2023-11-23 07:15:32,471 INFO L226 Difference]: Without dead ends: 1828 [2023-11-23 07:15:32,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:15:32,472 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 131 mSDsluCounter, 2353 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 2753 SdHoareTripleChecker+Invalid, 1348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:32,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 2753 Invalid, 1348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 07:15:32,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1828 states. [2023-11-23 07:15:32,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1828 to 1646. [2023-11-23 07:15:32,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1646 states, 1535 states have (on average 1.5993485342019544) internal successors, (2455), 1542 states have internal predecessors, (2455), 73 states have call successors, (73), 27 states have call predecessors, (73), 37 states have return successors, (96), 76 states have call predecessors, (96), 69 states have call successors, (96) [2023-11-23 07:15:32,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1646 states to 1646 states and 2624 transitions. [2023-11-23 07:15:32,520 INFO L78 Accepts]: Start accepts. Automaton has 1646 states and 2624 transitions. Word has length 98 [2023-11-23 07:15:32,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:32,520 INFO L495 AbstractCegarLoop]: Abstraction has 1646 states and 2624 transitions. [2023-11-23 07:15:32,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 07:15:32,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1646 states and 2624 transitions. [2023-11-23 07:15:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 07:15:32,524 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:32,525 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:32,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 07:15:32,525 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:32,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:32,525 INFO L85 PathProgramCache]: Analyzing trace with hash 2008169921, now seen corresponding path program 1 times [2023-11-23 07:15:32,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:32,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4439780] [2023-11-23 07:15:32,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:32,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:33,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:33,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:33,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:33,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:33,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:33,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:15:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:33,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:15:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:33,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 07:15:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:33,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:15:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 07:15:33,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:33,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4439780] [2023-11-23 07:15:33,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4439780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:33,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:15:33,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 07:15:33,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707599845] [2023-11-23 07:15:33,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:33,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 07:15:33,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:33,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 07:15:33,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:15:33,829 INFO L87 Difference]: Start difference. First operand 1646 states and 2624 transitions. Second operand has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 07:15:35,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:35,702 INFO L93 Difference]: Finished difference Result 2468 states and 3959 transitions. [2023-11-23 07:15:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 07:15:35,703 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 99 [2023-11-23 07:15:35,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:35,711 INFO L225 Difference]: With dead ends: 2468 [2023-11-23 07:15:35,711 INFO L226 Difference]: Without dead ends: 2387 [2023-11-23 07:15:35,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-23 07:15:35,714 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 433 mSDsluCounter, 3594 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 3973 SdHoareTripleChecker+Invalid, 1180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:35,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 3973 Invalid, 1180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:15:35,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2387 states. [2023-11-23 07:15:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2387 to 1607. [2023-11-23 07:15:35,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1513 states have (on average 1.605419695968275) internal successors, (2429), 1521 states have internal predecessors, (2429), 60 states have call successors, (60), 27 states have call predecessors, (60), 33 states have return successors, (75), 58 states have call predecessors, (75), 56 states have call successors, (75) [2023-11-23 07:15:35,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2564 transitions. [2023-11-23 07:15:35,765 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2564 transitions. Word has length 99 [2023-11-23 07:15:35,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:35,765 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2564 transitions. [2023-11-23 07:15:35,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 07:15:35,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2564 transitions. [2023-11-23 07:15:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-23 07:15:35,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:35,769 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:35,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 07:15:35,770 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:35,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash 226696182, now seen corresponding path program 1 times [2023-11-23 07:15:35,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:35,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357853014] [2023-11-23 07:15:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:35,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:36,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:36,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:36,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:36,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:36,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:36,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:15:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:36,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:15:36,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:36,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:15:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 07:15:36,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:36,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357853014] [2023-11-23 07:15:36,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357853014] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:15:36,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95873823] [2023-11-23 07:15:36,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:36,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:15:36,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:15:36,948 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:15:36,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 07:15:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:37,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 07:15:37,484 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:15:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 07:15:37,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:15:37,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95873823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:37,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:15:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2023-11-23 07:15:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829523378] [2023-11-23 07:15:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:37,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:15:37,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:37,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:15:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:15:37,577 INFO L87 Difference]: Start difference. First operand 1607 states and 2564 transitions. Second operand has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:15:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:38,350 INFO L93 Difference]: Finished difference Result 3157 states and 5045 transitions. [2023-11-23 07:15:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:15:38,351 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 97 [2023-11-23 07:15:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:38,355 INFO L225 Difference]: With dead ends: 3157 [2023-11-23 07:15:38,356 INFO L226 Difference]: Without dead ends: 1631 [2023-11-23 07:15:38,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-11-23 07:15:38,358 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 13 mSDsluCounter, 3169 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:38,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 3627 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:15:38,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2023-11-23 07:15:38,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1623. [2023-11-23 07:15:38,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1525 states have (on average 1.600655737704918) internal successors, (2441), 1537 states have internal predecessors, (2441), 60 states have call successors, (60), 27 states have call predecessors, (60), 37 states have return successors, (83), 58 states have call predecessors, (83), 56 states have call successors, (83) [2023-11-23 07:15:38,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2584 transitions. [2023-11-23 07:15:38,402 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2584 transitions. Word has length 97 [2023-11-23 07:15:38,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:38,402 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 2584 transitions. [2023-11-23 07:15:38,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:15:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2584 transitions. [2023-11-23 07:15:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 07:15:38,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:38,407 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:38,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 07:15:38,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 07:15:38,621 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:38,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:38,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1324451525, now seen corresponding path program 1 times [2023-11-23 07:15:38,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:38,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954984042] [2023-11-23 07:15:38,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:38,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:39,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:39,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:39,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:39,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:39,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:39,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:15:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:39,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:15:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 07:15:39,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:39,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954984042] [2023-11-23 07:15:39,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954984042] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:15:39,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299258585] [2023-11-23 07:15:39,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:39,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:15:39,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:15:39,868 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:15:39,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 07:15:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:40,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-23 07:15:40,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:15:40,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 07:15:40,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 07:15:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 07:15:40,858 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:15:40,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299258585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:40,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:15:40,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2023-11-23 07:15:40,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066900069] [2023-11-23 07:15:40,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:40,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:15:40,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:40,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:15:40,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2023-11-23 07:15:40,862 INFO L87 Difference]: Start difference. First operand 1623 states and 2584 transitions. Second operand has 11 states, 10 states have (on average 8.2) internal successors, (82), 11 states have internal predecessors, (82), 5 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-23 07:15:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:42,654 INFO L93 Difference]: Finished difference Result 2430 states and 3854 transitions. [2023-11-23 07:15:42,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 07:15:42,655 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 11 states have internal predecessors, (82), 5 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 99 [2023-11-23 07:15:42,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:42,660 INFO L225 Difference]: With dead ends: 2430 [2023-11-23 07:15:42,660 INFO L226 Difference]: Without dead ends: 1658 [2023-11-23 07:15:42,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 100 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2023-11-23 07:15:42,664 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 458 mSDsluCounter, 3946 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 4395 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:42,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 4395 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 07:15:42,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2023-11-23 07:15:42,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1635. [2023-11-23 07:15:42,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1536 states have (on average 1.5989583333333333) internal successors, (2456), 1549 states have internal predecessors, (2456), 60 states have call successors, (60), 27 states have call predecessors, (60), 38 states have return successors, (85), 58 states have call predecessors, (85), 56 states have call successors, (85) [2023-11-23 07:15:42,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2601 transitions. [2023-11-23 07:15:42,713 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2601 transitions. Word has length 99 [2023-11-23 07:15:42,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:42,713 INFO L495 AbstractCegarLoop]: Abstraction has 1635 states and 2601 transitions. [2023-11-23 07:15:42,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 11 states have internal predecessors, (82), 5 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-23 07:15:42,713 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2601 transitions. [2023-11-23 07:15:42,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 07:15:42,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:42,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:15:42,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 07:15:42,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 07:15:42,924 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:42,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:42,925 INFO L85 PathProgramCache]: Analyzing trace with hash 584006265, now seen corresponding path program 1 times [2023-11-23 07:15:42,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:42,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860832844] [2023-11-23 07:15:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:42,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:43,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:43,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:43,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:43,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:43,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:43,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:15:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:15:43,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:43,292 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 07:15:43,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:43,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860832844] [2023-11-23 07:15:43,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860832844] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:15:43,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433542688] [2023-11-23 07:15:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:43,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:15:43,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:15:43,294 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:15:43,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 07:15:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:43,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:15:43,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:15:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 07:15:43,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:15:43,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433542688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:43,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:15:43,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 07:15:43,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67817425] [2023-11-23 07:15:43,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:43,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:15:43,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:43,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:15:43,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:15:43,770 INFO L87 Difference]: Start difference. First operand 1635 states and 2601 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:15:44,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:44,130 INFO L93 Difference]: Finished difference Result 2902 states and 4593 transitions. [2023-11-23 07:15:44,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:15:44,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2023-11-23 07:15:44,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:44,134 INFO L225 Difference]: With dead ends: 2902 [2023-11-23 07:15:44,134 INFO L226 Difference]: Without dead ends: 1295 [2023-11-23 07:15:44,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:15:44,138 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 6 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:44,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1372 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:15:44,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2023-11-23 07:15:44,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1212. [2023-11-23 07:15:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 1141 states have (on average 1.5950920245398772) internal successors, (1820), 1148 states have internal predecessors, (1820), 42 states have call successors, (42), 23 states have call predecessors, (42), 28 states have return successors, (54), 40 states have call predecessors, (54), 39 states have call successors, (54) [2023-11-23 07:15:44,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1916 transitions. [2023-11-23 07:15:44,170 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1916 transitions. Word has length 99 [2023-11-23 07:15:44,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:44,170 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1916 transitions. [2023-11-23 07:15:44,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:15:44,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1916 transitions. [2023-11-23 07:15:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 07:15:44,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:44,173 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:44,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 07:15:44,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:15:44,390 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:44,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:44,391 INFO L85 PathProgramCache]: Analyzing trace with hash -843076902, now seen corresponding path program 1 times [2023-11-23 07:15:44,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:44,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321433878] [2023-11-23 07:15:44,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:44,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:45,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:45,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:45,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:45,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:45,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:45,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:45,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:15:45,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:45,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:15:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:15:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 07:15:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-23 07:15:46,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:46,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321433878] [2023-11-23 07:15:46,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321433878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:46,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:15:46,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 07:15:46,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129264580] [2023-11-23 07:15:46,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:46,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:15:46,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:46,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:15:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:15:46,175 INFO L87 Difference]: Start difference. First operand 1212 states and 1916 transitions. Second operand has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 07:15:47,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:47,993 INFO L93 Difference]: Finished difference Result 1533 states and 2376 transitions. [2023-11-23 07:15:47,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:15:47,994 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 104 [2023-11-23 07:15:47,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:47,998 INFO L225 Difference]: With dead ends: 1533 [2023-11-23 07:15:47,998 INFO L226 Difference]: Without dead ends: 1450 [2023-11-23 07:15:47,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:15:47,999 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 172 mSDsluCounter, 2442 mSDsCounter, 0 mSdLazyCounter, 1633 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 1672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:48,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2910 Invalid, 1672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1633 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 07:15:48,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2023-11-23 07:15:48,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1255. [2023-11-23 07:15:48,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1177 states have (on average 1.588785046728972) internal successors, (1870), 1182 states have internal predecessors, (1870), 48 states have call successors, (48), 23 states have call predecessors, (48), 29 states have return successors, (61), 49 states have call predecessors, (61), 45 states have call successors, (61) [2023-11-23 07:15:48,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1979 transitions. [2023-11-23 07:15:48,035 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1979 transitions. Word has length 104 [2023-11-23 07:15:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:48,035 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1979 transitions. [2023-11-23 07:15:48,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 07:15:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1979 transitions. [2023-11-23 07:15:48,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-23 07:15:48,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:48,038 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:48,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 07:15:48,039 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:48,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:48,039 INFO L85 PathProgramCache]: Analyzing trace with hash 141993482, now seen corresponding path program 1 times [2023-11-23 07:15:48,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:48,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834295932] [2023-11-23 07:15:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:48,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:48,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:15:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:15:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:49,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:15:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:15:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 07:15:49,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:49,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834295932] [2023-11-23 07:15:49,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834295932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:49,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:15:49,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 07:15:49,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305882471] [2023-11-23 07:15:49,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:49,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 07:15:49,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:49,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 07:15:49,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:15:49,210 INFO L87 Difference]: Start difference. First operand 1255 states and 1979 transitions. Second operand has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 07:15:50,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:50,937 INFO L93 Difference]: Finished difference Result 1870 states and 2978 transitions. [2023-11-23 07:15:50,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:15:50,937 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 105 [2023-11-23 07:15:50,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:50,942 INFO L225 Difference]: With dead ends: 1870 [2023-11-23 07:15:50,943 INFO L226 Difference]: Without dead ends: 1818 [2023-11-23 07:15:50,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-23 07:15:50,945 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 441 mSDsluCounter, 3227 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:50,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 3606 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 07:15:50,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2023-11-23 07:15:50,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1230. [2023-11-23 07:15:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1163 states have (on average 1.5932932072227) internal successors, (1853), 1168 states have internal predecessors, (1853), 40 states have call successors, (40), 23 states have call predecessors, (40), 26 states have return successors, (48), 38 states have call predecessors, (48), 37 states have call successors, (48) [2023-11-23 07:15:50,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 1941 transitions. [2023-11-23 07:15:50,979 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 1941 transitions. Word has length 105 [2023-11-23 07:15:50,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:50,981 INFO L495 AbstractCegarLoop]: Abstraction has 1230 states and 1941 transitions. [2023-11-23 07:15:50,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.230769230769231) internal successors, (68), 13 states have internal predecessors, (68), 6 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 07:15:50,981 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 1941 transitions. [2023-11-23 07:15:50,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 07:15:50,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:50,984 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:50,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 07:15:50,984 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:50,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:50,985 INFO L85 PathProgramCache]: Analyzing trace with hash 823721412, now seen corresponding path program 1 times [2023-11-23 07:15:50,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:50,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941293263] [2023-11-23 07:15:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:50,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:51,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:51,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:51,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:51,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:51,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:51,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:51,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:51,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:15:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:51,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:52,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 07:15:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:52,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:15:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:52,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 07:15:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:52,125 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 07:15:52,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:52,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941293263] [2023-11-23 07:15:52,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941293263] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:15:52,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054636861] [2023-11-23 07:15:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:52,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:15:52,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:15:52,127 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:15:52,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 07:15:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:52,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 07:15:52,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:15:52,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2023-11-23 07:15:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 07:15:52,849 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:15:52,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054636861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:52,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:15:52,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-11-23 07:15:52,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172012767] [2023-11-23 07:15:52,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:52,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:15:52,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:52,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:15:52,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:15:52,851 INFO L87 Difference]: Start difference. First operand 1230 states and 1941 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:15:54,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:54,186 INFO L93 Difference]: Finished difference Result 1612 states and 2466 transitions. [2023-11-23 07:15:54,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:15:54,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 109 [2023-11-23 07:15:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:54,190 INFO L225 Difference]: With dead ends: 1612 [2023-11-23 07:15:54,190 INFO L226 Difference]: Without dead ends: 1326 [2023-11-23 07:15:54,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:15:54,191 INFO L413 NwaCegarLoop]: 400 mSDtfsCounter, 733 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 1071 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1071 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:54,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 1932 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1071 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 07:15:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2023-11-23 07:15:54,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1236. [2023-11-23 07:15:54,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1169 states have (on average 1.5902480752780155) internal successors, (1859), 1174 states have internal predecessors, (1859), 40 states have call successors, (40), 23 states have call predecessors, (40), 26 states have return successors, (48), 38 states have call predecessors, (48), 37 states have call successors, (48) [2023-11-23 07:15:54,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1947 transitions. [2023-11-23 07:15:54,225 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1947 transitions. Word has length 109 [2023-11-23 07:15:54,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:54,225 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1947 transitions. [2023-11-23 07:15:54,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:15:54,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1947 transitions. [2023-11-23 07:15:54,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 07:15:54,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:54,228 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:54,260 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 07:15:54,444 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,SelfDestructingSolverStorable21 [2023-11-23 07:15:54,445 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:54,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash -465491457, now seen corresponding path program 1 times [2023-11-23 07:15:54,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:54,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854070153] [2023-11-23 07:15:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:55,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:55,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:55,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:55,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:55,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:15:55,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:55,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:15:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:55,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:15:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:15:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:55,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:15:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:55,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:15:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 07:15:55,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:55,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854070153] [2023-11-23 07:15:55,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854070153] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:15:55,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693861576] [2023-11-23 07:15:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:55,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:15:55,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:15:55,664 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:15:55,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 07:15:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:56,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-23 07:15:56,237 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:15:56,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2023-11-23 07:15:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 07:15:56,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:15:56,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693861576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:56,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:15:56,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [12] total 26 [2023-11-23 07:15:56,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236912589] [2023-11-23 07:15:56,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:56,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 07:15:56,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:56,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 07:15:56,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:15:56,733 INFO L87 Difference]: Start difference. First operand 1236 states and 1947 transitions. Second operand has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:16:00,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:00,154 INFO L93 Difference]: Finished difference Result 1870 states and 2873 transitions. [2023-11-23 07:16:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 07:16:00,154 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2023-11-23 07:16:00,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:00,158 INFO L225 Difference]: With dead ends: 1870 [2023-11-23 07:16:00,158 INFO L226 Difference]: Without dead ends: 1452 [2023-11-23 07:16:00,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=199, Invalid=1693, Unknown=0, NotChecked=0, Total=1892 [2023-11-23 07:16:00,160 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 774 mSDsluCounter, 3069 mSDsCounter, 0 mSdLazyCounter, 3511 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 3464 SdHoareTripleChecker+Invalid, 3535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:00,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 3464 Invalid, 3535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3511 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-23 07:16:00,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2023-11-23 07:16:00,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1287. [2023-11-23 07:16:00,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1220 states have (on average 1.5827868852459017) internal successors, (1931), 1225 states have internal predecessors, (1931), 40 states have call successors, (40), 23 states have call predecessors, (40), 26 states have return successors, (48), 38 states have call predecessors, (48), 37 states have call successors, (48) [2023-11-23 07:16:00,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 2019 transitions. [2023-11-23 07:16:00,195 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 2019 transitions. Word has length 110 [2023-11-23 07:16:00,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:00,195 INFO L495 AbstractCegarLoop]: Abstraction has 1287 states and 2019 transitions. [2023-11-23 07:16:00,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.866666666666666) internal successors, (73), 15 states have internal predecessors, (73), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:16:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 2019 transitions. [2023-11-23 07:16:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 07:16:00,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:00,201 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:00,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 07:16:00,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:00,415 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:00,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:00,415 INFO L85 PathProgramCache]: Analyzing trace with hash -337014694, now seen corresponding path program 1 times [2023-11-23 07:16:00,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:00,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013889105] [2023-11-23 07:16:00,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:00,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:01,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:16:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:01,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:16:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:16:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:16:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:01,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:16:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:01,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:16:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:16:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:01,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:16:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:01,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:16:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 07:16:01,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:01,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013889105] [2023-11-23 07:16:01,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013889105] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:01,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128218186] [2023-11-23 07:16:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:01,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:01,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:01,721 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:16:01,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 07:16:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:02,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 07:16:02,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:02,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2023-11-23 07:16:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 07:16:02,481 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:16:02,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128218186] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:16:02,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:16:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-11-23 07:16:02,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495798898] [2023-11-23 07:16:02,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:02,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:16:02,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:02,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:16:02,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:16:02,483 INFO L87 Difference]: Start difference. First operand 1287 states and 2019 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:16:03,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:03,526 INFO L93 Difference]: Finished difference Result 1669 states and 2544 transitions. [2023-11-23 07:16:03,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:16:03,527 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 110 [2023-11-23 07:16:03,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:03,531 INFO L225 Difference]: With dead ends: 1669 [2023-11-23 07:16:03,531 INFO L226 Difference]: Without dead ends: 1383 [2023-11-23 07:16:03,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:16:03,532 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 699 mSDsluCounter, 1610 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:03,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 2042 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 07:16:03,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2023-11-23 07:16:03,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1293. [2023-11-23 07:16:03,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1226 states have (on average 1.5799347471451877) internal successors, (1937), 1231 states have internal predecessors, (1937), 40 states have call successors, (40), 23 states have call predecessors, (40), 26 states have return successors, (48), 38 states have call predecessors, (48), 37 states have call successors, (48) [2023-11-23 07:16:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 2025 transitions. [2023-11-23 07:16:03,564 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 2025 transitions. Word has length 110 [2023-11-23 07:16:03,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:03,564 INFO L495 AbstractCegarLoop]: Abstraction has 1293 states and 2025 transitions. [2023-11-23 07:16:03,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:16:03,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 2025 transitions. [2023-11-23 07:16:03,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 07:16:03,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:03,567 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:03,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 07:16:03,784 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,SelfDestructingSolverStorable23 [2023-11-23 07:16:03,784 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:03,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:03,785 INFO L85 PathProgramCache]: Analyzing trace with hash 452069468, now seen corresponding path program 1 times [2023-11-23 07:16:03,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:03,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311483145] [2023-11-23 07:16:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:03,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:04,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:04,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:16:04,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:04,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:16:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:04,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:16:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:04,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:16:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:04,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:16:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:04,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:16:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:05,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:16:05,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:16:05,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:16:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 07:16:05,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:05,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311483145] [2023-11-23 07:16:05,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311483145] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:05,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447409316] [2023-11-23 07:16:05,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:05,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:05,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:05,057 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:16:05,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 07:16:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:05,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:16:05,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:05,659 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 07:16:05,660 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:16:05,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447409316] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:16:05,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:16:05,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2023-11-23 07:16:05,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476401288] [2023-11-23 07:16:05,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:05,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:16:05,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:05,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:16:05,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:16:05,662 INFO L87 Difference]: Start difference. First operand 1293 states and 2025 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:16:06,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:06,173 INFO L93 Difference]: Finished difference Result 2029 states and 3167 transitions. [2023-11-23 07:16:06,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:16:06,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2023-11-23 07:16:06,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:06,182 INFO L225 Difference]: With dead ends: 2029 [2023-11-23 07:16:06,183 INFO L226 Difference]: Without dead ends: 1881 [2023-11-23 07:16:06,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:16:06,184 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 550 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:06,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 2318 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:16:06,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1881 states. [2023-11-23 07:16:06,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1881 to 1263. [2023-11-23 07:16:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1263 states, 1196 states have (on average 1.5693979933110367) internal successors, (1877), 1201 states have internal predecessors, (1877), 40 states have call successors, (40), 23 states have call predecessors, (40), 26 states have return successors, (48), 38 states have call predecessors, (48), 37 states have call successors, (48) [2023-11-23 07:16:06,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1263 states to 1263 states and 1965 transitions. [2023-11-23 07:16:06,218 INFO L78 Accepts]: Start accepts. Automaton has 1263 states and 1965 transitions. Word has length 110 [2023-11-23 07:16:06,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:06,218 INFO L495 AbstractCegarLoop]: Abstraction has 1263 states and 1965 transitions. [2023-11-23 07:16:06,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:16:06,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1263 states and 1965 transitions. [2023-11-23 07:16:06,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 07:16:06,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:06,221 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:06,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-23 07:16:06,438 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,SelfDestructingSolverStorable24 [2023-11-23 07:16:06,438 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:06,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash -250324120, now seen corresponding path program 1 times [2023-11-23 07:16:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:06,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078009353] [2023-11-23 07:16:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:07,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:16:07,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:07,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:16:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:07,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:16:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:16:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:07,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:16:07,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:07,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:16:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:16:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:07,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:16:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:07,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:16:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 07:16:07,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078009353] [2023-11-23 07:16:07,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078009353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:07,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634838847] [2023-11-23 07:16:07,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:07,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:07,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:07,571 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:16:07,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 07:16:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:08,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 2758 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-23 07:16:08,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 24 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 07:16:09,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:16:09,622 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 07:16:09,622 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 20 treesize of output 19 [2023-11-23 07:16:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 07:16:09,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634838847] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:16:09,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:16:09,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 10] total 29 [2023-11-23 07:16:09,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955674914] [2023-11-23 07:16:09,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:16:09,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 07:16:09,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:09,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 07:16:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2023-11-23 07:16:09,636 INFO L87 Difference]: Start difference. First operand 1263 states and 1965 transitions. Second operand has 29 states, 27 states have (on average 7.518518518518518) internal successors, (203), 26 states have internal predecessors, (203), 10 states have call successors, (28), 6 states have call predecessors, (28), 9 states have return successors, (28), 8 states have call predecessors, (28), 10 states have call successors, (28) [2023-11-23 07:16:14,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:14,150 INFO L93 Difference]: Finished difference Result 3100 states and 4913 transitions. [2023-11-23 07:16:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-23 07:16:14,151 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 7.518518518518518) internal successors, (203), 26 states have internal predecessors, (203), 10 states have call successors, (28), 6 states have call predecessors, (28), 9 states have return successors, (28), 8 states have call predecessors, (28), 10 states have call successors, (28) Word has length 110 [2023-11-23 07:16:14,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:14,154 INFO L225 Difference]: With dead ends: 3100 [2023-11-23 07:16:14,154 INFO L226 Difference]: Without dead ends: 1326 [2023-11-23 07:16:14,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 212 SyntacticMatches, 10 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=358, Invalid=2398, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 07:16:14,157 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 4991 mSDsluCounter, 5841 mSDsCounter, 0 mSdLazyCounter, 1842 mSolverCounterSat, 96 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5008 SdHoareTripleChecker+Valid, 6255 SdHoareTripleChecker+Invalid, 1940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1842 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:14,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5008 Valid, 6255 Invalid, 1940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1842 Invalid, 2 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 07:16:14,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2023-11-23 07:16:14,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 857. [2023-11-23 07:16:14,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 812 states have (on average 1.5701970443349753) internal successors, (1275), 816 states have internal predecessors, (1275), 26 states have call successors, (26), 16 states have call predecessors, (26), 18 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2023-11-23 07:16:14,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1331 transitions. [2023-11-23 07:16:14,184 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1331 transitions. Word has length 110 [2023-11-23 07:16:14,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:14,185 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1331 transitions. [2023-11-23 07:16:14,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 7.518518518518518) internal successors, (203), 26 states have internal predecessors, (203), 10 states have call successors, (28), 6 states have call predecessors, (28), 9 states have return successors, (28), 8 states have call predecessors, (28), 10 states have call successors, (28) [2023-11-23 07:16:14,185 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1331 transitions. [2023-11-23 07:16:14,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 07:16:14,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:14,187 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:14,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 07:16:14,398 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,SelfDestructingSolverStorable25 [2023-11-23 07:16:14,398 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:14,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:14,398 INFO L85 PathProgramCache]: Analyzing trace with hash -282171593, now seen corresponding path program 1 times [2023-11-23 07:16:14,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:14,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046607681] [2023-11-23 07:16:14,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:14,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:14,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:14,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:16:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:16:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:14,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:16:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:14,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:16:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:14,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:16:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:15,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:16:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:15,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:16:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:15,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:16:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 07:16:15,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:15,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046607681] [2023-11-23 07:16:15,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046607681] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:15,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953618390] [2023-11-23 07:16:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:15,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:15,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:15,360 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:16:15,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 07:16:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:15,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 07:16:15,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:16,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:16:16,212 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 07:16:16,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:16:16,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953618390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:16:16,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:16:16,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2023-11-23 07:16:16,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034572589] [2023-11-23 07:16:16,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:16,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:16:16,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:16,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:16:16,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-11-23 07:16:16,214 INFO L87 Difference]: Start difference. First operand 857 states and 1331 transitions. Second operand has 12 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 07:16:18,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:21,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:23,170 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:25,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:25,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:25,465 INFO L93 Difference]: Finished difference Result 1312 states and 2042 transitions. [2023-11-23 07:16:25,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:16:25,465 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 112 [2023-11-23 07:16:25,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:25,467 INFO L225 Difference]: With dead ends: 1312 [2023-11-23 07:16:25,467 INFO L226 Difference]: Without dead ends: 867 [2023-11-23 07:16:25,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:16:25,469 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 456 mSDsluCounter, 4779 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 5664 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:25,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 5664 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 4 Unknown, 0 Unchecked, 9.1s Time] [2023-11-23 07:16:25,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 867 states. [2023-11-23 07:16:25,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 867 to 865. [2023-11-23 07:16:25,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 818 states have (on average 1.5660146699266504) internal successors, (1281), 823 states have internal predecessors, (1281), 26 states have call successors, (26), 17 states have call predecessors, (26), 20 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2023-11-23 07:16:25,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1339 transitions. [2023-11-23 07:16:25,523 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1339 transitions. Word has length 112 [2023-11-23 07:16:25,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:25,523 INFO L495 AbstractCegarLoop]: Abstraction has 865 states and 1339 transitions. [2023-11-23 07:16:25,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 07:16:25,524 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1339 transitions. [2023-11-23 07:16:25,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 07:16:25,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:25,525 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:25,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 07:16:25,745 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,SelfDestructingSolverStorable26 [2023-11-23 07:16:25,745 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:25,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:25,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2054220917, now seen corresponding path program 1 times [2023-11-23 07:16:25,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:25,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677861395] [2023-11-23 07:16:25,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:25,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:26,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:16:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:26,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:16:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:26,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:26,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:26,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:16:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:26,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:16:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:26,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:16:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:26,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:16:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:26,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:16:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:27,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:16:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 07:16:27,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:27,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677861395] [2023-11-23 07:16:27,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677861395] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:27,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122033190] [2023-11-23 07:16:27,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:27,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:27,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:27,013 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:16:27,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 07:16:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:27,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-23 07:16:27,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:27,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:16:28,228 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 07:16:28,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:16:28,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122033190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:16:28,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:16:28,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [13] total 26 [2023-11-23 07:16:28,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435723591] [2023-11-23 07:16:28,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:28,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 07:16:28,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:28,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 07:16:28,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:16:28,230 INFO L87 Difference]: Start difference. First operand 865 states and 1339 transitions. Second operand has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 6 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 07:16:31,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:33,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:35,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:37,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:38,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:38,099 INFO L93 Difference]: Finished difference Result 906 states and 1384 transitions. [2023-11-23 07:16:38,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:16:38,099 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 6 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) Word has length 112 [2023-11-23 07:16:38,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:38,101 INFO L225 Difference]: With dead ends: 906 [2023-11-23 07:16:38,101 INFO L226 Difference]: Without dead ends: 863 [2023-11-23 07:16:38,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 110 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=1060, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 07:16:38,103 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 846 mSDsluCounter, 8265 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 28 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 9111 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:38,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 9111 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 889 Invalid, 4 Unknown, 0 Unchecked, 9.7s Time] [2023-11-23 07:16:38,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-11-23 07:16:38,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 861. [2023-11-23 07:16:38,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 815 states have (on average 1.5668711656441718) internal successors, (1277), 819 states have internal predecessors, (1277), 26 states have call successors, (26), 17 states have call predecessors, (26), 19 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2023-11-23 07:16:38,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1333 transitions. [2023-11-23 07:16:38,129 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1333 transitions. Word has length 112 [2023-11-23 07:16:38,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:38,129 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1333 transitions. [2023-11-23 07:16:38,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.571428571428571) internal successors, (78), 14 states have internal predecessors, (78), 6 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (10), 7 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 07:16:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1333 transitions. [2023-11-23 07:16:38,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 07:16:38,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:38,131 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:38,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 07:16:38,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:38,347 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:38,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:38,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1539681801, now seen corresponding path program 2 times [2023-11-23 07:16:38,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:38,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019701499] [2023-11-23 07:16:38,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:38,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:39,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:39,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:16:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:16:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:39,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:16:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:39,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:16:39,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:16:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:16:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:39,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:16:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:39,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:16:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:39,525 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 07:16:39,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:39,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019701499] [2023-11-23 07:16:39,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019701499] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:39,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133681920] [2023-11-23 07:16:39,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:16:39,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:39,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:39,527 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:16:39,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 07:16:40,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 07:16:40,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:16:40,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 2594 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:16:40,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 07:16:40,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:16:40,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133681920] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:16:40,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:16:40,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2023-11-23 07:16:40,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324319915] [2023-11-23 07:16:40,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:40,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:16:40,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:40,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:16:40,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:16:40,363 INFO L87 Difference]: Start difference. First operand 861 states and 1333 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:16:40,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:40,712 INFO L93 Difference]: Finished difference Result 1693 states and 2635 transitions. [2023-11-23 07:16:40,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:16:40,713 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 112 [2023-11-23 07:16:40,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:40,714 INFO L225 Difference]: With dead ends: 1693 [2023-11-23 07:16:40,715 INFO L226 Difference]: Without dead ends: 853 [2023-11-23 07:16:40,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:16:40,716 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 10 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:40,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1343 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:16:40,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2023-11-23 07:16:40,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 853. [2023-11-23 07:16:40,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 808 states have (on average 1.568069306930693) internal successors, (1267), 811 states have internal predecessors, (1267), 26 states have call successors, (26), 17 states have call predecessors, (26), 18 states have return successors, (27), 24 states have call predecessors, (27), 24 states have call successors, (27) [2023-11-23 07:16:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1320 transitions. [2023-11-23 07:16:40,737 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1320 transitions. Word has length 112 [2023-11-23 07:16:40,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:40,738 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1320 transitions. [2023-11-23 07:16:40,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:16:40,738 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1320 transitions. [2023-11-23 07:16:40,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 07:16:40,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:40,740 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:40,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 07:16:40,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-23 07:16:40,953 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:40,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:40,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1958178103, now seen corresponding path program 1 times [2023-11-23 07:16:40,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:40,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935016872] [2023-11-23 07:16:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:40,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:41,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:41,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:16:41,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:41,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:16:41,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:41,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:16:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:41,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 07:16:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:16:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:41,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:16:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:42,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:16:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:42,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 07:16:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:42,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 07:16:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:42,060 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-23 07:16:42,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:42,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935016872] [2023-11-23 07:16:42,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935016872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:42,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52183214] [2023-11-23 07:16:42,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:42,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:42,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:42,062 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:16:42,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 07:16:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:42,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 07:16:42,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:42,734 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-23 07:16:42,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:16:42,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52183214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:16:42,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:16:42,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-11-23 07:16:42,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430970029] [2023-11-23 07:16:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:42,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:16:42,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:42,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:16:42,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:16:42,738 INFO L87 Difference]: Start difference. First operand 853 states and 1320 transitions. Second operand has 9 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:16:43,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:43,291 INFO L93 Difference]: Finished difference Result 868 states and 1333 transitions. [2023-11-23 07:16:43,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:16:43,292 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 115 [2023-11-23 07:16:43,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:43,293 INFO L225 Difference]: With dead ends: 868 [2023-11-23 07:16:43,293 INFO L226 Difference]: Without dead ends: 458 [2023-11-23 07:16:43,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2023-11-23 07:16:43,294 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 12 mSDsluCounter, 3133 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3585 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:43,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3585 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:16:43,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2023-11-23 07:16:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2023-11-23 07:16:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 430 states have (on average 1.5744186046511628) internal successors, (677), 432 states have internal predecessors, (677), 17 states have call successors, (17), 9 states have call predecessors, (17), 10 states have return successors, (19), 16 states have call predecessors, (19), 16 states have call successors, (19) [2023-11-23 07:16:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 713 transitions. [2023-11-23 07:16:43,307 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 713 transitions. Word has length 115 [2023-11-23 07:16:43,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:43,308 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 713 transitions. [2023-11-23 07:16:43,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 12.0) internal successors, (84), 8 states have internal predecessors, (84), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:16:43,308 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 713 transitions. [2023-11-23 07:16:43,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 07:16:43,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:43,309 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:43,327 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-23 07:16:43,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:43,528 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:43,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:43,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1604959529, now seen corresponding path program 1 times [2023-11-23 07:16:43,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:43,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824674880] [2023-11-23 07:16:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:43,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:44,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:16:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:16:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:44,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:44,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:16:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:16:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:44,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:16:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:44,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:16:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:44,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:16:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:44,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:16:44,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:44,742 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 07:16:44,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:44,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824674880] [2023-11-23 07:16:44,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824674880] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:44,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933317648] [2023-11-23 07:16:44,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:44,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:44,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:44,744 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:16:44,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 07:16:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:45,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 07:16:45,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 07:16:45,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:16:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 07:16:45,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933317648] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:45,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:16:45,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13, 13] total 28 [2023-11-23 07:16:45,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45547551] [2023-11-23 07:16:45,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:45,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:16:45,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:45,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:16:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=696, Unknown=0, NotChecked=0, Total=756 [2023-11-23 07:16:45,584 INFO L87 Difference]: Start difference. First operand 458 states and 713 transitions. Second operand has 10 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:16:46,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:46,140 INFO L93 Difference]: Finished difference Result 471 states and 729 transitions. [2023-11-23 07:16:46,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:16:46,140 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 116 [2023-11-23 07:16:46,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:46,142 INFO L225 Difference]: With dead ends: 471 [2023-11-23 07:16:46,142 INFO L226 Difference]: Without dead ends: 469 [2023-11-23 07:16:46,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=969, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 07:16:46,152 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 25 mSDsluCounter, 3577 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 4027 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:46,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 4027 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:16:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-11-23 07:16:46,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 463. [2023-11-23 07:16:46,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 434 states have (on average 1.5691244239631337) internal successors, (681), 437 states have internal predecessors, (681), 17 states have call successors, (17), 9 states have call predecessors, (17), 11 states have return successors, (23), 16 states have call predecessors, (23), 16 states have call successors, (23) [2023-11-23 07:16:46,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 721 transitions. [2023-11-23 07:16:46,175 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 721 transitions. Word has length 116 [2023-11-23 07:16:46,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:46,175 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 721 transitions. [2023-11-23 07:16:46,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 8.625) internal successors, (69), 8 states have internal predecessors, (69), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:16:46,175 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 721 transitions. [2023-11-23 07:16:46,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 07:16:46,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:46,176 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:46,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-23 07:16:46,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:46,386 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:46,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:46,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1997986539, now seen corresponding path program 1 times [2023-11-23 07:16:46,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:46,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199899070] [2023-11-23 07:16:46,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:46,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:47,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:16:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:16:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:47,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:16:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:47,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:16:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:47,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:16:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:47,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:16:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:47,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:16:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:47,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:16:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:47,667 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 07:16:47,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:47,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199899070] [2023-11-23 07:16:47,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199899070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:47,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761944386] [2023-11-23 07:16:47,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:47,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:47,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:47,669 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:16:47,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 07:16:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:48,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 07:16:48,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 07:16:58,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:16:59,101 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 07:16:59,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761944386] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:59,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:16:59,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13, 21] total 38 [2023-11-23 07:16:59,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95786722] [2023-11-23 07:16:59,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:16:59,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 07:16:59,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:59,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 07:16:59,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1311, Unknown=5, NotChecked=0, Total=1406 [2023-11-23 07:16:59,103 INFO L87 Difference]: Start difference. First operand 463 states and 721 transitions. Second operand has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:17:08,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:08,349 INFO L93 Difference]: Finished difference Result 469 states and 726 transitions. [2023-11-23 07:17:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:17:08,349 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 116 [2023-11-23 07:17:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:08,351 INFO L225 Difference]: With dead ends: 469 [2023-11-23 07:17:08,351 INFO L226 Difference]: Without dead ends: 465 [2023-11-23 07:17:08,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=160, Invalid=1901, Unknown=9, NotChecked=0, Total=2070 [2023-11-23 07:17:08,352 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 30 mSDsluCounter, 4890 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 5339 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:08,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 5339 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 07:17:08,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2023-11-23 07:17:08,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 455. [2023-11-23 07:17:08,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 429 states have (on average 1.5734265734265733) internal successors, (675), 430 states have internal predecessors, (675), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-23 07:17:08,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 709 transitions. [2023-11-23 07:17:08,364 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 709 transitions. Word has length 116 [2023-11-23 07:17:08,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:08,365 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 709 transitions. [2023-11-23 07:17:08,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:17:08,365 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 709 transitions. [2023-11-23 07:17:08,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-23 07:17:08,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:08,366 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:08,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-23 07:17:08,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:08,582 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:08,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:08,582 INFO L85 PathProgramCache]: Analyzing trace with hash 760544332, now seen corresponding path program 1 times [2023-11-23 07:17:08,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:08,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072520790] [2023-11-23 07:17:08,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:08,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:08,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:17:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:17:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:17:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:17:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:17:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:17:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:17:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 07:17:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:17:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 07:17:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:09,861 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 07:17:09,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:09,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072520790] [2023-11-23 07:17:09,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072520790] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:09,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176583166] [2023-11-23 07:17:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:09,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:09,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:09,863 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:17:09,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-23 07:17:10,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:10,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 2810 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 07:17:10,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 07:17:10,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:17:10,798 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 07:17:10,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176583166] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:10,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:17:10,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13, 13] total 28 [2023-11-23 07:17:10,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649460677] [2023-11-23 07:17:10,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:17:10,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:17:10,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:17:10,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:17:10,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=696, Unknown=0, NotChecked=0, Total=756 [2023-11-23 07:17:10,800 INFO L87 Difference]: Start difference. First operand 455 states and 709 transitions. Second operand has 10 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 07:17:11,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:11,350 INFO L93 Difference]: Finished difference Result 465 states and 721 transitions. [2023-11-23 07:17:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:17:11,351 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 129 [2023-11-23 07:17:11,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:11,352 INFO L225 Difference]: With dead ends: 465 [2023-11-23 07:17:11,352 INFO L226 Difference]: Without dead ends: 460 [2023-11-23 07:17:11,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=969, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 07:17:11,353 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 21 mSDsluCounter, 3599 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4052 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:11,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4052 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:17:11,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2023-11-23 07:17:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 460. [2023-11-23 07:17:11,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 433 states have (on average 1.5681293302540416) internal successors, (679), 435 states have internal predecessors, (679), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (21), 15 states have call predecessors, (21), 15 states have call successors, (21) [2023-11-23 07:17:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 716 transitions. [2023-11-23 07:17:11,363 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 716 transitions. Word has length 129 [2023-11-23 07:17:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:11,363 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 716 transitions. [2023-11-23 07:17:11,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 07:17:11,363 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 716 transitions. [2023-11-23 07:17:11,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-23 07:17:11,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:11,364 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:11,388 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-23 07:17:11,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:11,589 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:11,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:11,589 INFO L85 PathProgramCache]: Analyzing trace with hash 367517322, now seen corresponding path program 1 times [2023-11-23 07:17:11,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:11,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598681133] [2023-11-23 07:17:11,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:11,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:11,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:17:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:17:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:17:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:17:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:17:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:17:12,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:17:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 07:17:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:17:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 07:17:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 07:17:12,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:12,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598681133] [2023-11-23 07:17:12,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598681133] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088721391] [2023-11-23 07:17:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:12,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:12,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:12,716 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:17:12,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-23 07:17:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:13,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 2815 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 07:17:13,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:23,803 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-23 07:17:23,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:17:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 07:17:24,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088721391] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:24,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:17:24,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [13, 21] total 38 [2023-11-23 07:17:24,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695420195] [2023-11-23 07:17:24,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:17:24,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 07:17:24,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:17:24,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 07:17:24,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1311, Unknown=5, NotChecked=0, Total=1406 [2023-11-23 07:17:24,114 INFO L87 Difference]: Start difference. First operand 460 states and 716 transitions. Second operand has 13 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 07:17:32,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:32,860 INFO L93 Difference]: Finished difference Result 460 states and 716 transitions. [2023-11-23 07:17:32,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:17:32,860 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 129 [2023-11-23 07:17:32,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:32,861 INFO L225 Difference]: With dead ends: 460 [2023-11-23 07:17:32,861 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 07:17:32,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 19.0s TimeCoverageRelationStatistics Valid=160, Invalid=1901, Unknown=9, NotChecked=0, Total=2070 [2023-11-23 07:17:32,862 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 31 mSDsluCounter, 4462 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 4912 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:32,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 4912 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:17:32,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 07:17:32,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 07:17:32,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 07:17:32,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 07:17:32,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 129 [2023-11-23 07:17:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:32,864 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 07:17:32,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.545454545454546) internal successors, (83), 11 states have internal predecessors, (83), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 07:17:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 07:17:32,864 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 07:17:32,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 07:17:32,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-23 07:17:33,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-23 07:17:33,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 07:18:39,790 WARN L293 SmtUtils]: Spent 1.10m on a formula simplification. DAG size of input: 189 DAG size of output: 132 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) Killed by 15