./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_cursor_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_cursor_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 09:10:42,194 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 09:10:42,266 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 09:10:42,271 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 09:10:42,272 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 09:10:42,299 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 09:10:42,300 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 09:10:42,300 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 09:10:42,300 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 09:10:42,301 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 09:10:42,301 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 09:10:42,301 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 09:10:42,301 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 09:10:42,302 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 09:10:42,302 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 09:10:42,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 09:10:42,302 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 09:10:42,302 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 09:10:42,303 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 09:10:42,303 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 09:10:42,303 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 09:10:42,316 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 09:10:42,316 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 09:10:42,316 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 09:10:42,317 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 09:10:42,317 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 09:10:42,317 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 09:10:42,317 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 09:10:42,317 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:10:42,317 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 09:10:42,317 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 09:10:42,318 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 09:10:42,318 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 09:10:42,318 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 09:10:42,318 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 09:10:42,318 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 09:10:42,318 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 09:10:42,318 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 09:10:42,318 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 09:10:42,319 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> caa9ea3c4b01be424b9d4542ff8acdcb39307db8022d65ba85a629a6a4ef591a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 09:10:42,525 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 09:10:42,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 09:10:42,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 09:10:42,560 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 09:10:42,561 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 09:10:42,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_cursor_harness.i [2023-11-23 09:10:43,660 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 09:10:44,071 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 09:10:44,072 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_cursor_harness.i [2023-11-23 09:10:44,103 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e9847b5a/d969cbfa3f2f4abb974a407e1f614f49/FLAGdee267461 [2023-11-23 09:10:44,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e9847b5a/d969cbfa3f2f4abb974a407e1f614f49 [2023-11-23 09:10:44,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 09:10:44,129 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 09:10:44,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 09:10:44,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 09:10:44,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 09:10:44,135 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:44" (1/1) ... [2023-11-23 09:10:44,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463be944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:44, skipping insertion in model container [2023-11-23 09:10:44,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:10:44" (1/1) ... [2023-11-23 09:10:44,216 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 09:10:44,476 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_string_eq_byte_cursor_harness.i[4499,4512] [2023-11-23 09:10:44,485 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_string_eq_byte_cursor_harness.i[4559,4572] [2023-11-23 09:10:45,395 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:45,396 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:45,396 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:45,397 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:45,398 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:45,405 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:45,406 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:45,421 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:45,422 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:45,713 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:10:45,715 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:10:45,715 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:10:45,716 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:10:45,717 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:10:45,717 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:10:45,718 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:10:45,718 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:10:45,719 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:10:45,719 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:10:45,991 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:45,991 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:46,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:10:46,182 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 09:10:46,198 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_string_eq_byte_cursor_harness.i[4499,4512] [2023-11-23 09:10:46,199 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_string_eq_byte_cursor_harness.i[4559,4572] [2023-11-23 09:10:46,233 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:46,233 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:46,233 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:46,234 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:46,234 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:46,238 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:46,238 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:46,239 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:46,240 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:46,272 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:10:46,273 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:10:46,273 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:10:46,274 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:10:46,274 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:10:46,274 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:10:46,275 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:10:46,275 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:10:46,275 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:10:46,276 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:10:46,330 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2023-11-23 09:10:46,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:46,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:10:46,340 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2023-11-23 09:10:46,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:10:46,557 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,557 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,557 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,557 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,557 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,557 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,557 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,557 WARN L675 CHandler]: The function s_global_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,557 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,557 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,557 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,557 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,558 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,558 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,558 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,558 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,558 WARN L675 CHandler]: The function tl_thread_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,558 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,558 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,558 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:10:46,564 INFO L206 MainTranslator]: Completed translation [2023-11-23 09:10:46,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46 WrapperNode [2023-11-23 09:10:46,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 09:10:46,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 09:10:46,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 09:10:46,567 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 09:10:46,582 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46" (1/1) ... [2023-11-23 09:10:46,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46" (1/1) ... [2023-11-23 09:10:46,803 INFO L138 Inliner]: procedures = 692, calls = 2794, calls flagged for inlining = 60, calls inlined = 7, statements flattened = 864 [2023-11-23 09:10:46,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 09:10:46,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 09:10:46,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 09:10:46,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 09:10:46,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46" (1/1) ... [2023-11-23 09:10:46,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46" (1/1) ... [2023-11-23 09:10:46,817 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46" (1/1) ... [2023-11-23 09:10:46,817 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46" (1/1) ... [2023-11-23 09:10:46,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46" (1/1) ... [2023-11-23 09:10:46,841 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46" (1/1) ... [2023-11-23 09:10:46,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46" (1/1) ... [2023-11-23 09:10:46,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46" (1/1) ... [2023-11-23 09:10:46,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 09:10:46,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 09:10:46,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 09:10:46,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 09:10:46,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46" (1/1) ... [2023-11-23 09:10:46,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:10:46,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:46,892 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 09:10:46,921 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 09:10:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-23 09:10:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-23 09:10:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 09:10:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 09:10:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-23 09:10:46,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-23 09:10:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 09:10:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 09:10:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 09:10:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 09:10:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 09:10:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 09:10:46,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 09:10:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 09:10:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 09:10:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 09:10:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 09:10:46,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 09:10:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 09:10:46,966 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 09:10:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 09:10:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 09:10:46,966 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 09:10:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 09:10:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 09:10:46,967 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2023-11-23 09:10:46,967 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2023-11-23 09:10:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 09:10:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 09:10:46,968 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 09:10:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 09:10:46,968 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 09:10:46,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 09:10:46,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 09:10:47,210 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 09:10:47,212 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 09:10:47,852 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 09:10:47,941 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 09:10:47,942 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 09:10:47,942 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:47 BoogieIcfgContainer [2023-11-23 09:10:47,942 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 09:10:47,944 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 09:10:47,944 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 09:10:47,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 09:10:47,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:10:44" (1/3) ... [2023-11-23 09:10:47,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258ce70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:47, skipping insertion in model container [2023-11-23 09:10:47,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:10:46" (2/3) ... [2023-11-23 09:10:47,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@258ce70b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:10:47, skipping insertion in model container [2023-11-23 09:10:47,948 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:10:47" (3/3) ... [2023-11-23 09:10:47,949 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_cursor_harness.i [2023-11-23 09:10:47,961 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 09:10:47,961 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 09:10:47,993 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 09:10:47,997 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;@27ebb57a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 09:10:47,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 09:10:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 70 states have internal predecessors, (92), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-23 09:10:48,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 09:10:48,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:48,022 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 09:10:48,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:48,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:48,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1198054599, now seen corresponding path program 1 times [2023-11-23 09:10:48,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:48,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069819783] [2023-11-23 09:10:48,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:48,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:48,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:48,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:48,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:48,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:48,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 09:10:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 09:10:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 09:10:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:48,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 09:10:48,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 09:10:48,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:48,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069819783] [2023-11-23 09:10:48,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069819783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:48,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:48,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 09:10:48,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073666459] [2023-11-23 09:10:48,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:48,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 09:10:48,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:48,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 09:10:48,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 09:10:48,561 INFO L87 Difference]: Start difference. First operand has 110 states, 69 states have (on average 1.3333333333333333) internal successors, (92), 70 states have internal predecessors, (92), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 09:10:48,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:48,650 INFO L93 Difference]: Finished difference Result 212 states and 304 transitions. [2023-11-23 09:10:48,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 09:10:48,653 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 52 [2023-11-23 09:10:48,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:48,661 INFO L225 Difference]: With dead ends: 212 [2023-11-23 09:10:48,662 INFO L226 Difference]: Without dead ends: 108 [2023-11-23 09:10:48,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 09:10:48,669 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:48,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:10:48,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-23 09:10:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-23 09:10:48,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 68 states have (on average 1.3088235294117647) internal successors, (89), 69 states have internal predecessors, (89), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-23 09:10:48,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 146 transitions. [2023-11-23 09:10:48,717 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 146 transitions. Word has length 52 [2023-11-23 09:10:48,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:48,718 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 146 transitions. [2023-11-23 09:10:48,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 09:10:48,719 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 146 transitions. [2023-11-23 09:10:48,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 09:10:48,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:48,722 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 09:10:48,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 09:10:48,722 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:48,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:48,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1973577289, now seen corresponding path program 1 times [2023-11-23 09:10:48,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:48,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475097839] [2023-11-23 09:10:48,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:48,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 09:10:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 09:10:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 09:10:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 09:10:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 09:10:49,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:49,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475097839] [2023-11-23 09:10:49,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475097839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:49,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445476316] [2023-11-23 09:10:49,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:49,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:49,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:49,280 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 09:10:49,323 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 09:10:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 2457 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 09:10:49,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:49,873 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 09:10:49,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:10:49,953 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 09:10:49,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445476316] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:10:49,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:10:49,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 11 [2023-11-23 09:10:49,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800594044] [2023-11-23 09:10:49,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:10:49,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 09:10:49,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:49,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 09:10:49,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-23 09:10:49,958 INFO L87 Difference]: Start difference. First operand 108 states and 146 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 7 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-23 09:10:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:50,240 INFO L93 Difference]: Finished difference Result 187 states and 254 transitions. [2023-11-23 09:10:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 09:10:50,240 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 7 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 52 [2023-11-23 09:10:50,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:50,245 INFO L225 Difference]: With dead ends: 187 [2023-11-23 09:10:50,245 INFO L226 Difference]: Without dead ends: 110 [2023-11-23 09:10:50,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-23 09:10:50,251 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 266 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:50,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 485 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:10:50,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-23 09:10:50,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-11-23 09:10:50,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 69 states have (on average 1.3043478260869565) internal successors, (90), 71 states have internal predecessors, (90), 29 states have call successors, (29), 10 states have call predecessors, (29), 11 states have return successors, (29), 28 states have call predecessors, (29), 28 states have call successors, (29) [2023-11-23 09:10:50,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 148 transitions. [2023-11-23 09:10:50,272 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 148 transitions. Word has length 52 [2023-11-23 09:10:50,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:50,273 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 148 transitions. [2023-11-23 09:10:50,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 7 states have call successors, (20), 3 states have call predecessors, (20), 5 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-23 09:10:50,273 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 148 transitions. [2023-11-23 09:10:50,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 09:10:50,279 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:50,279 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 09:10:50,296 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 09:10:50,492 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 09:10:50,493 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:50,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:50,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1224806453, now seen corresponding path program 1 times [2023-11-23 09:10:50,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:50,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748530448] [2023-11-23 09:10:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:50,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:50,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:50,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:50,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 09:10:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:50,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:10:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:50,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 09:10:50,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:50,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 09:10:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 09:10:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:50,927 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 09:10:50,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:50,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748530448] [2023-11-23 09:10:50,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748530448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:50,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:50,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 09:10:50,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278494941] [2023-11-23 09:10:50,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:50,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 09:10:50,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:50,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 09:10:50,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:10:50,933 INFO L87 Difference]: Start difference. First operand 110 states and 148 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 09:10:51,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:51,009 INFO L93 Difference]: Finished difference Result 189 states and 257 transitions. [2023-11-23 09:10:51,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 09:10:51,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2023-11-23 09:10:51,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:51,011 INFO L225 Difference]: With dead ends: 189 [2023-11-23 09:10:51,011 INFO L226 Difference]: Without dead ends: 139 [2023-11-23 09:10:51,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:10:51,012 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 11 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:51,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 396 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:10:51,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-23 09:10:51,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2023-11-23 09:10:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 86 states have (on average 1.302325581395349) internal successors, (112), 88 states have internal predecessors, (112), 39 states have call successors, (39), 10 states have call predecessors, (39), 11 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 09:10:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 191 transitions. [2023-11-23 09:10:51,021 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 191 transitions. Word has length 56 [2023-11-23 09:10:51,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:51,021 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 191 transitions. [2023-11-23 09:10:51,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 09:10:51,021 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 191 transitions. [2023-11-23 09:10:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 09:10:51,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:51,023 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 09:10:51,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 09:10:51,023 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:51,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:51,023 INFO L85 PathProgramCache]: Analyzing trace with hash 540916205, now seen corresponding path program 1 times [2023-11-23 09:10:51,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:51,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599846057] [2023-11-23 09:10:51,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:51,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 09:10:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:10:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 09:10:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 09:10:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 09:10:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,560 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-23 09:10:51,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:51,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599846057] [2023-11-23 09:10:51,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599846057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:51,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:51,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:10:51,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906630728] [2023-11-23 09:10:51,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:51,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:10:51,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:10:51,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:10:51,562 INFO L87 Difference]: Start difference. First operand 137 states and 191 transitions. Second operand has 8 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (9), 2 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 09:10:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:51,677 INFO L93 Difference]: Finished difference Result 147 states and 204 transitions. [2023-11-23 09:10:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 09:10:51,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (9), 2 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 56 [2023-11-23 09:10:51,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:51,680 INFO L225 Difference]: With dead ends: 147 [2023-11-23 09:10:51,681 INFO L226 Difference]: Without dead ends: 140 [2023-11-23 09:10:51,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 09:10:51,682 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 17 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:51,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 922 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:10:51,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-23 09:10:51,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-23 09:10:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 88 states have (on average 1.2954545454545454) internal successors, (114), 91 states have internal predecessors, (114), 39 states have call successors, (39), 10 states have call predecessors, (39), 12 states have return successors, (44), 38 states have call predecessors, (44), 38 states have call successors, (44) [2023-11-23 09:10:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 197 transitions. [2023-11-23 09:10:51,700 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 197 transitions. Word has length 56 [2023-11-23 09:10:51,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:51,700 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 197 transitions. [2023-11-23 09:10:51,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (9), 2 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 09:10:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 197 transitions. [2023-11-23 09:10:51,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 09:10:51,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:51,702 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 09:10:51,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 09:10:51,702 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:51,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:51,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1614934565, now seen corresponding path program 1 times [2023-11-23 09:10:51,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:51,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737728866] [2023-11-23 09:10:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:51,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:51,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 09:10:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:10:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 09:10:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 09:10:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 09:10:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:53,089 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 09:10:53,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:53,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737728866] [2023-11-23 09:10:53,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737728866] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:53,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482272077] [2023-11-23 09:10:53,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:53,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:53,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:53,109 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 09:10:53,130 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 09:10:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:53,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 2479 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 09:10:53,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 09:10:53,957 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:10:54,180 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 09:10:54,181 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 09:10:54,188 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 09:10:54,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482272077] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:10:54,188 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:10:54,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 22 [2023-11-23 09:10:54,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603639611] [2023-11-23 09:10:54,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:10:54,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 09:10:54,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:54,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 09:10:54,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-11-23 09:10:54,190 INFO L87 Difference]: Start difference. First operand 140 states and 197 transitions. Second operand has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 22 states have internal predecessors, (75), 5 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 09:10:55,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:55,353 INFO L93 Difference]: Finished difference Result 266 states and 365 transitions. [2023-11-23 09:10:55,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 09:10:55,354 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 22 states have internal predecessors, (75), 5 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) Word has length 60 [2023-11-23 09:10:55,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:55,355 INFO L225 Difference]: With dead ends: 266 [2023-11-23 09:10:55,355 INFO L226 Difference]: Without dead ends: 222 [2023-11-23 09:10:55,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 115 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=219, Invalid=837, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 09:10:55,356 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 273 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:55,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1526 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 09:10:55,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-11-23 09:10:55,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 215. [2023-11-23 09:10:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 138 states have (on average 1.289855072463768) internal successors, (178), 141 states have internal predecessors, (178), 56 states have call successors, (56), 18 states have call predecessors, (56), 20 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2023-11-23 09:10:55,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 293 transitions. [2023-11-23 09:10:55,371 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 293 transitions. Word has length 60 [2023-11-23 09:10:55,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:55,372 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 293 transitions. [2023-11-23 09:10:55,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 22 states have internal predecessors, (75), 5 states have call successors, (21), 3 states have call predecessors, (21), 7 states have return successors, (21), 5 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 09:10:55,372 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 293 transitions. [2023-11-23 09:10:55,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 09:10:55,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:55,373 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:55,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 09:10:55,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:55,586 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:55,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:55,587 INFO L85 PathProgramCache]: Analyzing trace with hash 312861917, now seen corresponding path program 1 times [2023-11-23 09:10:55,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:55,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445315021] [2023-11-23 09:10:55,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:55,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 09:10:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 09:10:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 09:10:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:10:56,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 09:10:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 09:10:56,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:56,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445315021] [2023-11-23 09:10:56,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445315021] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:56,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303616157] [2023-11-23 09:10:56,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:56,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:56,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:56,143 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 09:10:56,144 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 09:10:56,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 2491 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 09:10:56,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 09:10:56,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:10:56,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303616157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:56,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:10:56,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2023-11-23 09:10:56,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919697471] [2023-11-23 09:10:56,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:56,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 09:10:56,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:56,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 09:10:56,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 09:10:56,535 INFO L87 Difference]: Start difference. First operand 215 states and 293 transitions. Second operand has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 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 09:10:56,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:56,696 INFO L93 Difference]: Finished difference Result 326 states and 448 transitions. [2023-11-23 09:10:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 09:10:56,697 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 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 64 [2023-11-23 09:10:56,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:56,698 INFO L225 Difference]: With dead ends: 326 [2023-11-23 09:10:56,698 INFO L226 Difference]: Without dead ends: 224 [2023-11-23 09:10:56,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-23 09:10:56,699 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 13 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:56,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 975 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:10:56,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-23 09:10:56,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 219. [2023-11-23 09:10:56,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 141 states have (on average 1.2836879432624113) internal successors, (181), 145 states have internal predecessors, (181), 56 states have call successors, (56), 18 states have call predecessors, (56), 21 states have return successors, (62), 55 states have call predecessors, (62), 54 states have call successors, (62) [2023-11-23 09:10:56,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 299 transitions. [2023-11-23 09:10:56,712 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 299 transitions. Word has length 64 [2023-11-23 09:10:56,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:56,712 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 299 transitions. [2023-11-23 09:10:56,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 8 states have internal predecessors, (43), 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 09:10:56,712 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 299 transitions. [2023-11-23 09:10:56,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 09:10:56,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:56,713 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:56,729 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 09:10:56,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:56,929 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:56,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:56,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1219581576, now seen corresponding path program 1 times [2023-11-23 09:10:56,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:56,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916553010] [2023-11-23 09:10:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:56,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:57,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:57,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:57,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:10:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:57,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 09:10:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:57,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:10:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:57,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 09:10:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:57,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 09:10:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:57,425 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 09:10:57,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:57,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916553010] [2023-11-23 09:10:57,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916553010] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:57,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862127726] [2023-11-23 09:10:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:57,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:57,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:57,427 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 09:10:57,450 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 09:10:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:57,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 09:10:57,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:57,819 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 09:10:58,010 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 09:10:58,010 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 19 treesize of output 7 [2023-11-23 09:10:58,381 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 09:10:58,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:10:58,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2023-11-23 09:10:58,684 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 09:10:58,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2023-11-23 09:10:58,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2023-11-23 09:10:58,738 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 09:10:58,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862127726] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:10:58,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:10:58,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 16, 14] total 27 [2023-11-23 09:10:58,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650163105] [2023-11-23 09:10:58,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:10:58,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 09:10:58,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:58,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 09:10:58,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2023-11-23 09:10:58,744 INFO L87 Difference]: Start difference. First operand 219 states and 299 transitions. Second operand has 27 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 5 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-23 09:11:01,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:11:04,224 WARN L539 Checker$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 09:11:07,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:11:09,624 WARN L539 Checker$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 09:11:11,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:11:13,679 WARN L539 Checker$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 09:11:15,690 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 09:11:16,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:16,347 INFO L93 Difference]: Finished difference Result 670 states and 895 transitions. [2023-11-23 09:11:16,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-23 09:11:16,348 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 5 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) Word has length 66 [2023-11-23 09:11:16,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:16,351 INFO L225 Difference]: With dead ends: 670 [2023-11-23 09:11:16,351 INFO L226 Difference]: Without dead ends: 491 [2023-11-23 09:11:16,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 136 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1756 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1304, Invalid=5176, Unknown=0, NotChecked=0, Total=6480 [2023-11-23 09:11:16,353 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 428 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 1832 mSolverCounterSat, 143 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1832 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:16,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1726 Invalid, 1982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 15.8s Time] [2023-11-23 09:11:16,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-11-23 09:11:16,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 361. [2023-11-23 09:11:16,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 241 states have (on average 1.2531120331950207) internal successors, (302), 247 states have internal predecessors, (302), 83 states have call successors, (83), 32 states have call predecessors, (83), 36 states have return successors, (91), 81 states have call predecessors, (91), 80 states have call successors, (91) [2023-11-23 09:11:16,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 476 transitions. [2023-11-23 09:11:16,413 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 476 transitions. Word has length 66 [2023-11-23 09:11:16,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:16,414 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 476 transitions. [2023-11-23 09:11:16,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 5 states have call successors, (22), 4 states have call predecessors, (22), 7 states have return successors, (21), 4 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-23 09:11:16,414 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 476 transitions. [2023-11-23 09:11:16,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 09:11:16,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:16,415 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:11:16,432 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 09:11:16,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:11:16,616 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:16,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:16,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1222220337, now seen corresponding path program 1 times [2023-11-23 09:11:16,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:16,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407311232] [2023-11-23 09:11:16,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:16,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:16,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:17,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:11:17,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:17,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:17,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:11:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 09:11:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:17,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 09:11:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:17,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 09:11:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 09:11:17,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:17,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407311232] [2023-11-23 09:11:17,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407311232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:11:17,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:11:17,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 09:11:17,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715161856] [2023-11-23 09:11:17,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:11:17,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 09:11:17,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:17,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 09:11:17,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-23 09:11:17,672 INFO L87 Difference]: Start difference. First operand 361 states and 476 transitions. Second operand has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (9), 2 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 09:11:17,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:17,951 INFO L93 Difference]: Finished difference Result 388 states and 504 transitions. [2023-11-23 09:11:17,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 09:11:17,952 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (9), 2 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 68 [2023-11-23 09:11:17,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:17,954 INFO L225 Difference]: With dead ends: 388 [2023-11-23 09:11:17,954 INFO L226 Difference]: Without dead ends: 345 [2023-11-23 09:11:17,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-11-23 09:11:17,956 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 35 mSDsluCounter, 1376 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:17,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1505 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:11:17,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-23 09:11:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 247. [2023-11-23 09:11:17,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 162 states have (on average 1.2345679012345678) internal successors, (200), 167 states have internal predecessors, (200), 57 states have call successors, (57), 24 states have call predecessors, (57), 27 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2023-11-23 09:11:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 319 transitions. [2023-11-23 09:11:17,978 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 319 transitions. Word has length 68 [2023-11-23 09:11:17,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:17,979 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 319 transitions. [2023-11-23 09:11:17,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (9), 2 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 09:11:17,979 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 319 transitions. [2023-11-23 09:11:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 09:11:17,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:17,982 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:11:17,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 09:11:17,982 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:17,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:17,982 INFO L85 PathProgramCache]: Analyzing trace with hash -296404305, now seen corresponding path program 1 times [2023-11-23 09:11:17,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:17,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321099080] [2023-11-23 09:11:17,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:17,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:18,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:11:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:19,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:11:19,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:19,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:19,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:19,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 09:11:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:11:19,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 09:11:19,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 09:11:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:19,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 09:11:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:19,734 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-23 09:11:19,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:19,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321099080] [2023-11-23 09:11:19,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321099080] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:11:19,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793076235] [2023-11-23 09:11:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:19,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:11:19,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:11:19,736 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 09:11:19,778 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 09:11:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:20,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 09:11:20,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:11:20,222 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 09:11:20,834 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 09:11:20,834 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:11:20,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793076235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:11:20,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:11:20,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2023-11-23 09:11:20,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930256130] [2023-11-23 09:11:20,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:11:20,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 09:11:20,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:20,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 09:11:20,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2023-11-23 09:11:20,836 INFO L87 Difference]: Start difference. First operand 247 states and 319 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 09:11:23,903 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 09:11:25,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:11:27,932 WARN L539 Checker$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 09:11:29,966 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 09:11:30,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:30,220 INFO L93 Difference]: Finished difference Result 349 states and 444 transitions. [2023-11-23 09:11:30,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 09:11:30,221 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 76 [2023-11-23 09:11:30,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:30,223 INFO L225 Difference]: With dead ends: 349 [2023-11-23 09:11:30,223 INFO L226 Difference]: Without dead ends: 342 [2023-11-23 09:11:30,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 75 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=146, Invalid=1114, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 09:11:30,224 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 104 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 16 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1053 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:30,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1053 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 575 Invalid, 4 Unknown, 0 Unchecked, 9.2s Time] [2023-11-23 09:11:30,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-23 09:11:30,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 251. [2023-11-23 09:11:30,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 166 states have (on average 1.2349397590361446) internal successors, (205), 171 states have internal predecessors, (205), 57 states have call successors, (57), 24 states have call predecessors, (57), 27 states have return successors, (62), 55 states have call predecessors, (62), 55 states have call successors, (62) [2023-11-23 09:11:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 324 transitions. [2023-11-23 09:11:30,259 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 324 transitions. Word has length 76 [2023-11-23 09:11:30,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:30,260 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 324 transitions. [2023-11-23 09:11:30,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 09:11:30,260 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 324 transitions. [2023-11-23 09:11:30,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 09:11:30,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:30,264 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:11:30,281 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 09:11:30,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:11:30,465 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:30,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:30,465 INFO L85 PathProgramCache]: Analyzing trace with hash 404660273, now seen corresponding path program 1 times [2023-11-23 09:11:30,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:30,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47399000] [2023-11-23 09:11:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:30,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:30,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:30,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:11:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:30,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:11:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:30,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:30,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:30,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:30,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 09:11:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:30,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:11:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:30,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 09:11:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:30,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 09:11:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:30,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 09:11:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:30,884 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 09:11:30,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:30,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47399000] [2023-11-23 09:11:30,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47399000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:11:30,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:11:30,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 09:11:30,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418062309] [2023-11-23 09:11:30,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:11:30,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 09:11:30,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:30,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 09:11:30,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:11:30,887 INFO L87 Difference]: Start difference. First operand 251 states and 324 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 09:11:31,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:31,122 INFO L93 Difference]: Finished difference Result 412 states and 543 transitions. [2023-11-23 09:11:31,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:11:31,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 76 [2023-11-23 09:11:31,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:31,123 INFO L225 Difference]: With dead ends: 412 [2023-11-23 09:11:31,124 INFO L226 Difference]: Without dead ends: 218 [2023-11-23 09:11:31,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 09:11:31,124 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 54 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:31,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 277 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:11:31,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-23 09:11:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2023-11-23 09:11:31,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 142 states have (on average 1.1901408450704225) internal successors, (169), 146 states have internal predecessors, (169), 45 states have call successors, (45), 24 states have call predecessors, (45), 26 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 09:11:31,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 260 transitions. [2023-11-23 09:11:31,161 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 260 transitions. Word has length 76 [2023-11-23 09:11:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:31,161 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 260 transitions. [2023-11-23 09:11:31,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 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 09:11:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 260 transitions. [2023-11-23 09:11:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 09:11:31,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:31,162 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:31,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 09:11:31,162 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:31,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:31,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1659495755, now seen corresponding path program 1 times [2023-11-23 09:11:31,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:31,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581748078] [2023-11-23 09:11:31,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:31,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:11:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 09:11:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:11:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:11:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 09:11:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 09:11:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 09:11:31,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:31,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581748078] [2023-11-23 09:11:31,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581748078] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:11:31,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:11:31,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 09:11:31,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270621772] [2023-11-23 09:11:31,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:11:31,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 09:11:31,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:31,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 09:11:31,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 09:11:31,680 INFO L87 Difference]: Start difference. First operand 214 states and 260 transitions. Second operand has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 5 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 09:11:32,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:32,111 INFO L93 Difference]: Finished difference Result 280 states and 335 transitions. [2023-11-23 09:11:32,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 09:11:32,114 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 5 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 85 [2023-11-23 09:11:32,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:32,116 INFO L225 Difference]: With dead ends: 280 [2023-11-23 09:11:32,116 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 09:11:32,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-23 09:11:32,117 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 79 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 734 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:32,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 496 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 734 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 09:11:32,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 09:11:32,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-23 09:11:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 142 states have (on average 1.176056338028169) internal successors, (167), 146 states have internal predecessors, (167), 45 states have call successors, (45), 24 states have call predecessors, (45), 26 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 09:11:32,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 258 transitions. [2023-11-23 09:11:32,149 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 258 transitions. Word has length 85 [2023-11-23 09:11:32,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:32,150 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 258 transitions. [2023-11-23 09:11:32,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 8 states have internal predecessors, (41), 5 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 09:11:32,150 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 258 transitions. [2023-11-23 09:11:32,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 09:11:32,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:32,151 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:11:32,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 09:11:32,151 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:32,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:32,151 INFO L85 PathProgramCache]: Analyzing trace with hash 640195405, now seen corresponding path program 1 times [2023-11-23 09:11:32,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:32,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020125390] [2023-11-23 09:11:32,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:32,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:32,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:11:32,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 09:11:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:11:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:11:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 09:11:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 09:11:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:32,802 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 09:11:32,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:32,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020125390] [2023-11-23 09:11:32,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020125390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:11:32,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:11:32,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 09:11:32,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824513179] [2023-11-23 09:11:32,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:11:32,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 09:11:32,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:32,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 09:11:32,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-23 09:11:32,805 INFO L87 Difference]: Start difference. First operand 214 states and 258 transitions. Second operand has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 5 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 09:11:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:33,267 INFO L93 Difference]: Finished difference Result 302 states and 369 transitions. [2023-11-23 09:11:33,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 09:11:33,268 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 5 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 86 [2023-11-23 09:11:33,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:33,269 INFO L225 Difference]: With dead ends: 302 [2023-11-23 09:11:33,269 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 09:11:33,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-23 09:11:33,270 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 121 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 721 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:33,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 508 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 721 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 09:11:33,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 09:11:33,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-23 09:11:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 142 states have (on average 1.1619718309859155) internal successors, (165), 146 states have internal predecessors, (165), 45 states have call successors, (45), 24 states have call predecessors, (45), 26 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 09:11:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 256 transitions. [2023-11-23 09:11:33,305 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 256 transitions. Word has length 86 [2023-11-23 09:11:33,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:33,306 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 256 transitions. [2023-11-23 09:11:33,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 9 states have internal predecessors, (42), 5 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 09:11:33,306 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 256 transitions. [2023-11-23 09:11:33,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-23 09:11:33,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:33,308 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2023-11-23 09:11:33,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 09:11:33,308 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:33,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1270010248, now seen corresponding path program 1 times [2023-11-23 09:11:33,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:33,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983554557] [2023-11-23 09:11:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:33,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:33,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:33,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:11:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 09:11:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:11:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:11:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 09:11:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:11:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 09:11:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 09:11:33,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:33,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983554557] [2023-11-23 09:11:33,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983554557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:11:33,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:11:33,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:11:33,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496964590] [2023-11-23 09:11:33,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:11:33,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:11:33,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:33,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:11:33,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:11:33,602 INFO L87 Difference]: Start difference. First operand 214 states and 256 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 09:11:33,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:33,835 INFO L93 Difference]: Finished difference Result 280 states and 331 transitions. [2023-11-23 09:11:33,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:11:33,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 94 [2023-11-23 09:11:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:33,837 INFO L225 Difference]: With dead ends: 280 [2023-11-23 09:11:33,837 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 09:11:33,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 09:11:33,837 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 87 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:33,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 229 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:11:33,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 09:11:33,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-23 09:11:33,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 142 states have (on average 1.147887323943662) internal successors, (163), 146 states have internal predecessors, (163), 45 states have call successors, (45), 24 states have call predecessors, (45), 26 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 09:11:33,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 254 transitions. [2023-11-23 09:11:33,851 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 254 transitions. Word has length 94 [2023-11-23 09:11:33,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:33,852 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 254 transitions. [2023-11-23 09:11:33,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 09:11:33,852 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 254 transitions. [2023-11-23 09:11:33,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 09:11:33,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:33,853 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 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] [2023-11-23 09:11:33,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 09:11:33,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:33,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:33,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1984575673, now seen corresponding path program 1 times [2023-11-23 09:11:33,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:33,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551999441] [2023-11-23 09:11:33,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:33,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:11:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 09:11:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:11:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:11:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 09:11:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:11:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 09:11:34,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:11:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 09:11:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,119 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-23 09:11:34,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:34,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551999441] [2023-11-23 09:11:34,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551999441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:11:34,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:11:34,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:11:34,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358407847] [2023-11-23 09:11:34,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:11:34,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:11:34,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:11:34,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:11:34,122 INFO L87 Difference]: Start difference. First operand 214 states and 254 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 09:11:34,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:34,321 INFO L93 Difference]: Finished difference Result 306 states and 365 transitions. [2023-11-23 09:11:34,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:11:34,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 110 [2023-11-23 09:11:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:34,323 INFO L225 Difference]: With dead ends: 306 [2023-11-23 09:11:34,323 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 09:11:34,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:11:34,324 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 87 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:34,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 162 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:11:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 09:11:34,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-23 09:11:34,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 142 states have (on average 1.1338028169014085) internal successors, (161), 146 states have internal predecessors, (161), 45 states have call successors, (45), 24 states have call predecessors, (45), 26 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 09:11:34,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 252 transitions. [2023-11-23 09:11:34,336 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 252 transitions. Word has length 110 [2023-11-23 09:11:34,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:34,337 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 252 transitions. [2023-11-23 09:11:34,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 3 states have call successors, (19), 4 states have call predecessors, (19), 1 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2023-11-23 09:11:34,337 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 252 transitions. [2023-11-23 09:11:34,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 09:11:34,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:34,338 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:11:34,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 09:11:34,338 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:34,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:34,339 INFO L85 PathProgramCache]: Analyzing trace with hash -680185594, now seen corresponding path program 1 times [2023-11-23 09:11:34,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:34,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218876847] [2023-11-23 09:11:34,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:34,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:34,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:34,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:11:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 09:11:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:11:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:11:34,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 09:11:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:11:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 09:11:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 09:11:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:11:34,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 09:11:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-23 09:11:34,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:34,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218876847] [2023-11-23 09:11:34,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218876847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:11:34,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:11:34,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 09:11:34,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12679591] [2023-11-23 09:11:34,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:11:34,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 09:11:34,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:34,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 09:11:34,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 09:11:34,768 INFO L87 Difference]: Start difference. First operand 214 states and 252 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 09:11:35,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:35,045 INFO L93 Difference]: Finished difference Result 312 states and 369 transitions. [2023-11-23 09:11:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 09:11:35,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 116 [2023-11-23 09:11:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:35,047 INFO L225 Difference]: With dead ends: 312 [2023-11-23 09:11:35,047 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 09:11:35,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-23 09:11:35,048 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 54 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:35,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 251 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:11:35,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 09:11:35,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-23 09:11:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 142 states have (on average 1.119718309859155) internal successors, (159), 146 states have internal predecessors, (159), 45 states have call successors, (45), 24 states have call predecessors, (45), 26 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 09:11:35,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 250 transitions. [2023-11-23 09:11:35,060 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 250 transitions. Word has length 116 [2023-11-23 09:11:35,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:35,061 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 250 transitions. [2023-11-23 09:11:35,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 09:11:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 250 transitions. [2023-11-23 09:11:35,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 09:11:35,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:35,062 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:11:35,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 09:11:35,062 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:35,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:35,063 INFO L85 PathProgramCache]: Analyzing trace with hash -2133874431, now seen corresponding path program 1 times [2023-11-23 09:11:35,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:35,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956819990] [2023-11-23 09:11:35,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:35,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:35,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:35,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:11:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 09:11:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:11:35,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:11:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 09:11:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:11:35,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 09:11:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 09:11:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:11:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 09:11:35,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,476 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-23 09:11:35,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:35,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956819990] [2023-11-23 09:11:35,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956819990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:11:35,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:11:35,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:11:35,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558506856] [2023-11-23 09:11:35,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:11:35,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:11:35,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:35,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:11:35,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:11:35,479 INFO L87 Difference]: Start difference. First operand 214 states and 250 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 09:11:35,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:35,765 INFO L93 Difference]: Finished difference Result 286 states and 331 transitions. [2023-11-23 09:11:35,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:11:35,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 118 [2023-11-23 09:11:35,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:35,766 INFO L225 Difference]: With dead ends: 286 [2023-11-23 09:11:35,766 INFO L226 Difference]: Without dead ends: 214 [2023-11-23 09:11:35,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 09:11:35,767 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 87 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:35,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 334 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:11:35,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-23 09:11:35,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2023-11-23 09:11:35,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 142 states have (on average 1.1056338028169015) internal successors, (157), 146 states have internal predecessors, (157), 45 states have call successors, (45), 24 states have call predecessors, (45), 26 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2023-11-23 09:11:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 248 transitions. [2023-11-23 09:11:35,780 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 248 transitions. Word has length 118 [2023-11-23 09:11:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:35,781 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 248 transitions. [2023-11-23 09:11:35,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2023-11-23 09:11:35,781 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 248 transitions. [2023-11-23 09:11:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 09:11:35,782 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:35,782 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:11:35,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 09:11:35,783 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:35,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:35,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1711492517, now seen corresponding path program 1 times [2023-11-23 09:11:35,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:35,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110780349] [2023-11-23 09:11:35,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:35,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:39,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:40,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:40,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:11:40,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 09:11:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:11:40,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:11:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 09:11:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:11:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 09:11:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 09:11:40,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:11:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 09:11:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 5 proven. 18 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 09:11:40,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:40,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110780349] [2023-11-23 09:11:40,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110780349] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:11:40,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663645683] [2023-11-23 09:11:40,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:40,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:11:40,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:11:40,955 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 09:11:40,956 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 09:11:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:41,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 2717 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-23 09:11:41,412 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:11:41,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 09:11:41,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2023-11-23 09:11:41,828 INFO L349 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2023-11-23 09:11:41,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 106 [2023-11-23 09:11:41,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:11:41,859 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 09:11:41,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 11 [2023-11-23 09:11:42,172 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 09:11:42,172 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 09:11:44,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2023-11-23 09:12:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 09:12:01,222 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:12:02,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663645683] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:12:02,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:12:02,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 33] total 56 [2023-11-23 09:12:02,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571363847] [2023-11-23 09:12:02,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:12:02,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-11-23 09:12:02,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:02,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-11-23 09:12:02,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=4415, Unknown=4, NotChecked=0, Total=4692 [2023-11-23 09:12:02,842 INFO L87 Difference]: Start difference. First operand 214 states and 248 transitions. Second operand has 56 states, 43 states have (on average 2.558139534883721) internal successors, (110), 44 states have internal predecessors, (110), 21 states have call successors, (37), 7 states have call predecessors, (37), 13 states have return successors, (36), 22 states have call predecessors, (36), 20 states have call successors, (36) [2023-11-23 09:12:08,806 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 09:12:12,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:12:16,122 WARN L539 Checker$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 09:12:19,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:12:21,108 WARN L539 Checker$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 09:12:23,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:12:25,256 WARN L539 Checker$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 09:12:27,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:12:29,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:12:31,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:12:33,498 WARN L539 Checker$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 09:12:35,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:12:37,626 WARN L539 Checker$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 09:12:39,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:12:41,793 WARN L539 Checker$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 09:12:43,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:12:45,962 WARN L539 Checker$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 09:12:48,071 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 09:12:48,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:48,091 INFO L93 Difference]: Finished difference Result 324 states and 370 transitions. [2023-11-23 09:12:48,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-23 09:12:48,092 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 43 states have (on average 2.558139534883721) internal successors, (110), 44 states have internal predecessors, (110), 21 states have call successors, (37), 7 states have call predecessors, (37), 13 states have return successors, (36), 22 states have call predecessors, (36), 20 states have call successors, (36) Word has length 119 [2023-11-23 09:12:48,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:48,093 INFO L225 Difference]: With dead ends: 324 [2023-11-23 09:12:48,093 INFO L226 Difference]: Without dead ends: 322 [2023-11-23 09:12:48,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 129 SyntacticMatches, 11 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2828 ImplicationChecksByTransitivity, 23.4s TimeCoverageRelationStatistics Valid=742, Invalid=10384, Unknown=4, NotChecked=0, Total=11130 [2023-11-23 09:12:48,096 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 322 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 3756 mSolverCounterSat, 194 mSolverCounterUnsat, 74 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 4024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 3756 IncrementalHoareTripleChecker+Invalid, 74 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:48,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1085 Invalid, 4024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 3756 Invalid, 74 Unknown, 0 Unchecked, 42.2s Time] [2023-11-23 09:12:48,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-23 09:12:48,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 277. [2023-11-23 09:12:48,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 184 states have (on average 1.1195652173913044) internal successors, (206), 192 states have internal predecessors, (206), 54 states have call successors, (54), 32 states have call predecessors, (54), 38 states have return successors, (58), 52 states have call predecessors, (58), 51 states have call successors, (58) [2023-11-23 09:12:48,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 318 transitions. [2023-11-23 09:12:48,118 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 318 transitions. Word has length 119 [2023-11-23 09:12:48,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:48,118 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 318 transitions. [2023-11-23 09:12:48,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 43 states have (on average 2.558139534883721) internal successors, (110), 44 states have internal predecessors, (110), 21 states have call successors, (37), 7 states have call predecessors, (37), 13 states have return successors, (36), 22 states have call predecessors, (36), 20 states have call successors, (36) [2023-11-23 09:12:48,119 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 318 transitions. [2023-11-23 09:12:48,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 09:12:48,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:48,120 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-23 09:12:48,146 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 09:12:48,333 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,SelfDestructingSolverStorable16 [2023-11-23 09:12:48,333 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:48,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:48,334 INFO L85 PathProgramCache]: Analyzing trace with hash 63514845, now seen corresponding path program 1 times [2023-11-23 09:12:48,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:48,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707992882] [2023-11-23 09:12:48,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:48,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:48,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:48,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:48,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:48,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:48,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:12:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 09:12:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:12:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:12:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 09:12:49,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:12:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 09:12:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 09:12:49,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:12:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 09:12:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-23 09:12:49,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:49,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707992882] [2023-11-23 09:12:49,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707992882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:49,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:49,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 09:12:49,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624009996] [2023-11-23 09:12:49,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:49,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 09:12:49,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:49,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 09:12:49,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2023-11-23 09:12:49,230 INFO L87 Difference]: Start difference. First operand 277 states and 318 transitions. Second operand has 17 states, 15 states have (on average 3.6) internal successors, (54), 13 states have internal predecessors, (54), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 8 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 09:12:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:50,088 INFO L93 Difference]: Finished difference Result 376 states and 428 transitions. [2023-11-23 09:12:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 09:12:50,088 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6) internal successors, (54), 13 states have internal predecessors, (54), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 8 states have call predecessors, (19), 5 states have call successors, (19) Word has length 119 [2023-11-23 09:12:50,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:50,090 INFO L225 Difference]: With dead ends: 376 [2023-11-23 09:12:50,090 INFO L226 Difference]: Without dead ends: 279 [2023-11-23 09:12:50,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2023-11-23 09:12:50,091 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 126 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1013 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 1088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1013 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:50,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 644 Invalid, 1088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1013 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 09:12:50,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-11-23 09:12:50,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 271. [2023-11-23 09:12:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 182 states have (on average 1.0879120879120878) internal successors, (198), 188 states have internal predecessors, (198), 52 states have call successors, (52), 32 states have call predecessors, (52), 36 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2023-11-23 09:12:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 304 transitions. [2023-11-23 09:12:50,113 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 304 transitions. Word has length 119 [2023-11-23 09:12:50,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:50,113 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 304 transitions. [2023-11-23 09:12:50,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6) internal successors, (54), 13 states have internal predecessors, (54), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 8 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 09:12:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 304 transitions. [2023-11-23 09:12:50,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 09:12:50,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:50,115 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:50,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 09:12:50,115 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:50,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:50,115 INFO L85 PathProgramCache]: Analyzing trace with hash -358182820, now seen corresponding path program 1 times [2023-11-23 09:12:50,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:50,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197609929] [2023-11-23 09:12:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:50,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:50,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:12:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 09:12:50,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:12:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:12:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 09:12:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:12:50,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 09:12:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 09:12:50,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:12:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 09:12:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-23 09:12:50,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:50,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197609929] [2023-11-23 09:12:50,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197609929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:50,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:50,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 09:12:50,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248624700] [2023-11-23 09:12:50,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:50,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 09:12:50,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:50,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 09:12:50,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-23 09:12:50,928 INFO L87 Difference]: Start difference. First operand 271 states and 304 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 09:12:51,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:51,653 INFO L93 Difference]: Finished difference Result 328 states and 369 transitions. [2023-11-23 09:12:51,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 09:12:51,662 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 119 [2023-11-23 09:12:51,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:51,663 INFO L225 Difference]: With dead ends: 328 [2023-11-23 09:12:51,663 INFO L226 Difference]: Without dead ends: 293 [2023-11-23 09:12:51,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2023-11-23 09:12:51,664 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 72 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:51,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 542 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 09:12:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-23 09:12:51,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 286. [2023-11-23 09:12:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 192 states have (on average 1.0833333333333333) internal successors, (208), 199 states have internal predecessors, (208), 56 states have call successors, (56), 32 states have call predecessors, (56), 37 states have return successors, (59), 54 states have call predecessors, (59), 53 states have call successors, (59) [2023-11-23 09:12:51,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 323 transitions. [2023-11-23 09:12:51,701 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 323 transitions. Word has length 119 [2023-11-23 09:12:51,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:51,701 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 323 transitions. [2023-11-23 09:12:51,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2023-11-23 09:12:51,701 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 323 transitions. [2023-11-23 09:12:51,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 09:12:51,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:51,703 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-23 09:12:51,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 09:12:51,704 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:51,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:51,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1683394140, now seen corresponding path program 1 times [2023-11-23 09:12:51,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:51,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305885206] [2023-11-23 09:12:51,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:51,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:12:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 09:12:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:12:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:12:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 09:12:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:12:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 09:12:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 09:12:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:12:52,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 09:12:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-23 09:12:52,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:52,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305885206] [2023-11-23 09:12:52,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305885206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:12:52,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544687511] [2023-11-23 09:12:52,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:52,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:12:52,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:12:52,557 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 09:12:52,558 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 09:12:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:53,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 09:12:53,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:12:53,170 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 61 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 09:12:53,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:12:53,446 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-11-23 09:12:53,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544687511] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:12:53,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:12:53,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 24 [2023-11-23 09:12:53,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676210281] [2023-11-23 09:12:53,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:12:53,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 09:12:53,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:53,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 09:12:53,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2023-11-23 09:12:53,449 INFO L87 Difference]: Start difference. First operand 286 states and 323 transitions. Second operand has 24 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 5 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (29), 7 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-23 09:12:54,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:54,507 INFO L93 Difference]: Finished difference Result 436 states and 488 transitions. [2023-11-23 09:12:54,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 09:12:54,508 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 5 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (29), 7 states have call predecessors, (29), 4 states have call successors, (29) Word has length 123 [2023-11-23 09:12:54,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:54,509 INFO L225 Difference]: With dead ends: 436 [2023-11-23 09:12:54,509 INFO L226 Difference]: Without dead ends: 289 [2023-11-23 09:12:54,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=1126, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 09:12:54,511 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 69 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:54,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1076 Invalid, 1320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 09:12:54,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-23 09:12:54,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 282. [2023-11-23 09:12:54,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 189 states have (on average 1.0740740740740742) internal successors, (203), 195 states have internal predecessors, (203), 56 states have call successors, (56), 32 states have call predecessors, (56), 36 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2023-11-23 09:12:54,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 317 transitions. [2023-11-23 09:12:54,535 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 317 transitions. Word has length 123 [2023-11-23 09:12:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:54,535 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 317 transitions. [2023-11-23 09:12:54,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 5 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (29), 7 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-23 09:12:54,535 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 317 transitions. [2023-11-23 09:12:54,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-23 09:12:54,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:54,537 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-23 09:12:54,566 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 09:12:54,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:12:54,752 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:54,752 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:54,753 INFO L85 PathProgramCache]: Analyzing trace with hash -143078293, now seen corresponding path program 1 times [2023-11-23 09:12:54,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:54,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345148530] [2023-11-23 09:12:54,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:54,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:12:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 09:12:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:12:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:12:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 09:12:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:12:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 09:12:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 09:12:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:12:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 09:12:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,693 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-23 09:12:56,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:56,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345148530] [2023-11-23 09:12:56,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345148530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:56,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:56,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-23 09:12:56,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047452241] [2023-11-23 09:12:56,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:56,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 09:12:56,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:56,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 09:12:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 09:12:56,695 INFO L87 Difference]: Start difference. First operand 282 states and 317 transitions. Second operand has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 6 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 5 states have call predecessors, (19), 6 states have call successors, (19) [2023-11-23 09:12:57,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:57,509 INFO L93 Difference]: Finished difference Result 446 states and 510 transitions. [2023-11-23 09:12:57,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 09:12:57,510 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 6 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 5 states have call predecessors, (19), 6 states have call successors, (19) Word has length 125 [2023-11-23 09:12:57,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:57,511 INFO L225 Difference]: With dead ends: 446 [2023-11-23 09:12:57,511 INFO L226 Difference]: Without dead ends: 310 [2023-11-23 09:12:57,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2023-11-23 09:12:57,512 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 94 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:57,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 389 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 09:12:57,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-23 09:12:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 287. [2023-11-23 09:12:57,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 189 states have (on average 1.0687830687830688) internal successors, (202), 195 states have internal predecessors, (202), 61 states have call successors, (61), 32 states have call predecessors, (61), 36 states have return successors, (63), 59 states have call predecessors, (63), 58 states have call successors, (63) [2023-11-23 09:12:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 326 transitions. [2023-11-23 09:12:57,540 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 326 transitions. Word has length 125 [2023-11-23 09:12:57,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:57,540 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 326 transitions. [2023-11-23 09:12:57,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 6 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 5 states have call predecessors, (19), 6 states have call successors, (19) [2023-11-23 09:12:57,540 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 326 transitions. [2023-11-23 09:12:57,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 09:12:57,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:57,541 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:57,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 09:12:57,542 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:57,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:57,542 INFO L85 PathProgramCache]: Analyzing trace with hash 992784731, now seen corresponding path program 1 times [2023-11-23 09:12:57,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:57,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234211422] [2023-11-23 09:12:57,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:57,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:12:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:12:59,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:12:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:12:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 09:12:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 09:12:59,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:12:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 09:12:59,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:12:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 09:12:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 09:12:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:13:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 09:13:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 09:13:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-23 09:13:00,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:13:00,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234211422] [2023-11-23 09:13:00,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234211422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:13:00,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:13:00,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2023-11-23 09:13:00,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761975340] [2023-11-23 09:13:00,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:13:00,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 09:13:00,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:13:00,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 09:13:00,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2023-11-23 09:13:00,201 INFO L87 Difference]: Start difference. First operand 287 states and 326 transitions. Second operand has 24 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 9 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) [2023-11-23 09:13:01,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:13:01,710 INFO L93 Difference]: Finished difference Result 331 states and 381 transitions. [2023-11-23 09:13:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-23 09:13:01,710 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 9 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) Word has length 126 [2023-11-23 09:13:01,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:13:01,712 INFO L225 Difference]: With dead ends: 331 [2023-11-23 09:13:01,712 INFO L226 Difference]: Without dead ends: 329 [2023-11-23 09:13:01,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=136, Invalid=1196, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 09:13:01,713 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 151 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 1508 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 1593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:13:01,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 826 Invalid, 1593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1508 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 09:13:01,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-23 09:13:01,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 311. [2023-11-23 09:13:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 205 states have (on average 1.0634146341463415) internal successors, (218), 211 states have internal predecessors, (218), 67 states have call successors, (67), 34 states have call predecessors, (67), 38 states have return successors, (69), 65 states have call predecessors, (69), 64 states have call successors, (69) [2023-11-23 09:13:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 354 transitions. [2023-11-23 09:13:01,744 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 354 transitions. Word has length 126 [2023-11-23 09:13:01,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:13:01,744 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 354 transitions. [2023-11-23 09:13:01,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 2.95) internal successors, (59), 19 states have internal predecessors, (59), 9 states have call successors, (21), 4 states have call predecessors, (21), 5 states have return successors, (20), 9 states have call predecessors, (20), 8 states have call successors, (20) [2023-11-23 09:13:01,744 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 354 transitions. [2023-11-23 09:13:01,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-23 09:13:01,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:13:01,746 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:13:01,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 09:13:01,746 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:13:01,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:13:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash -750689372, now seen corresponding path program 1 times [2023-11-23 09:13:01,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:13:01,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566158130] [2023-11-23 09:13:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:13:01,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:13:02,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:13:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:02,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:13:02,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:13:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 09:13:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 09:13:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 09:13:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 09:13:02,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 09:13:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 09:13:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 09:13:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 09:13:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:02,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 09:13:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:03,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:13:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:03,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 09:13:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-23 09:13:03,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:13:03,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566158130] [2023-11-23 09:13:03,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566158130] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:13:03,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268158218] [2023-11-23 09:13:03,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:13:03,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:13:03,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:13:03,102 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 09:13:03,104 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 09:13:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:03,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 2776 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-23 09:13:03,606 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:13:03,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 43 [2023-11-23 09:13:03,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-23 09:13:03,748 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 09:13:03,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 24 treesize of output 16 [2023-11-23 09:13:03,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:13:03,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2023-11-23 09:13:04,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:13:04,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 72 [2023-11-23 09:13:26,368 WARN L293 SmtUtils]: Spent 12.05s on a formula simplification. DAG size of input: 552 DAG size of output: 356 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-23 09:13:26,369 INFO L349 Elim1Store]: treesize reduction 984, result has 44.6 percent of original size [2023-11-23 09:13:26,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 1 disjoint index pairs (out of 171 index pairs), introduced 29 new quantified variables, introduced 171 case distinctions, treesize of input 467 treesize of output 1084 [2023-11-23 09:13:37,174 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:53,202 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:11,001 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:19,630 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:20,696 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:21,456 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:21,764 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-23 09:14:21,942 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:22,047 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:22,268 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:22,558 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:23,598 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:14:33,606 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Killed by 15