./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_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_buf_ignore_case_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 c6f394469998c48e6ef18c3b42ee2a3474a6570f40012cad15c840d16c47e9d4 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 09:09:52,218 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 09:09:52,295 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 09:09:52,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 09:09:52,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 09:09:52,324 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 09:09:52,325 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 09:09:52,325 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 09:09:52,325 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 09:09:52,329 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 09:09:52,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 09:09:52,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 09:09:52,330 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 09:09:52,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 09:09:52,331 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 09:09:52,331 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 09:09:52,331 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 09:09:52,331 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 09:09:52,332 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 09:09:52,332 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 09:09:52,332 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 09:09:52,332 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 09:09:52,333 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 09:09:52,333 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 09:09:52,333 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 09:09:52,333 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 09:09:52,334 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 09:09:52,334 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 09:09:52,334 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:09:52,334 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 09:09:52,335 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 09:09:52,335 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 09:09:52,335 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 09:09:52,336 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 09:09:52,336 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 09:09:52,336 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 09:09:52,336 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 09:09:52,336 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 09:09:52,337 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 09:09:52,337 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6f394469998c48e6ef18c3b42ee2a3474a6570f40012cad15c840d16c47e9d4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 09:09:52,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 09:09:52,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 09:09:52,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 09:09:52,581 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 09:09:52,582 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 09:09:52,582 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i [2023-11-23 09:09:53,700 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 09:09:54,092 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 09:09:54,092 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i [2023-11-23 09:09:54,123 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03160fc31/ac0a9b2cbe0143cb8184430c7d1bc1ca/FLAG479e7ee4d [2023-11-23 09:09:54,136 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03160fc31/ac0a9b2cbe0143cb8184430c7d1bc1ca [2023-11-23 09:09:54,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 09:09:54,139 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 09:09:54,141 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 09:09:54,142 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 09:09:54,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 09:09:54,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:54" (1/1) ... [2023-11-23 09:09:54,146 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b09f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:54, skipping insertion in model container [2023-11-23 09:09:54,146 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:09:54" (1/1) ... [2023-11-23 09:09:54,239 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 09:09:54,461 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_buf_ignore_case_harness.i[4508,4521] [2023-11-23 09:09:54,468 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_buf_ignore_case_harness.i[4568,4581] [2023-11-23 09:09:55,062 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,062 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,063 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,063 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,073 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,085 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,092 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,094 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,094 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,357 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:09:55,358 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:09:55,359 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:09:55,359 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:09:55,361 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:09:55,361 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:09:55,362 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:09:55,362 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:09:55,363 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:09:55,363 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:09:55,610 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,624 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:09:55,806 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 09:09:55,826 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_buf_ignore_case_harness.i[4508,4521] [2023-11-23 09:09:55,826 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_buf_ignore_case_harness.i[4568,4581] [2023-11-23 09:09:55,864 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,864 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,864 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,866 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,866 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,870 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,873 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,874 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,875 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,899 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:09:55,900 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:09:55,900 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:09:55,900 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:09:55,901 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:09:55,901 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:09:55,901 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:09:55,902 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:09:55,902 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:09:55,902 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:09:55,951 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2023-11-23 09:09:55,952 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,952 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:09:55,964 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2023-11-23 09:09:55,997 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:09:56,153 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,153 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,153 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,154 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,154 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,154 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,154 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,154 WARN L675 CHandler]: The function s_global_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,155 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,155 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,155 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,155 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,155 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,156 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,156 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,156 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,156 WARN L675 CHandler]: The function tl_thread_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,156 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,156 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,157 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:09:56,162 INFO L206 MainTranslator]: Completed translation [2023-11-23 09:09:56,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56 WrapperNode [2023-11-23 09:09:56,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 09:09:56,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 09:09:56,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 09:09:56,164 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 09:09:56,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 09:09:56,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 09:09:56,298 INFO L138 Inliner]: procedures = 692, calls = 2789, calls flagged for inlining = 60, calls inlined = 7, statements flattened = 846 [2023-11-23 09:09:56,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 09:09:56,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 09:09:56,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 09:09:56,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 09:09:56,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 09:09:56,312 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 09:09:56,320 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 09:09:56,320 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 09:09:56,354 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 09:09:56,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 09:09:56,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 09:09:56,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 09:09:56,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 09:09:56,370 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 09:09:56,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 09:09:56,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 09:09:56,371 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (1/1) ... [2023-11-23 09:09:56,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:09:56,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:09:56,405 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 09:09:56,420 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 09:09:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-23 09:09:56,457 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-23 09:09:56,457 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 09:09:56,457 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 09:09:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2023-11-23 09:09:56,458 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2023-11-23 09:09:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-23 09:09:56,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-23 09:09:56,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 09:09:56,459 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 09:09:56,459 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 09:09:56,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 09:09:56,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 09:09:56,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 09:09:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 09:09:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 09:09:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 09:09:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 09:09:56,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 09:09:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 09:09:56,460 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 09:09:56,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 09:09:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 09:09:56,461 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 09:09:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 09:09:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 09:09:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 09:09:56,461 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 09:09:56,462 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 09:09:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 09:09:56,462 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 09:09:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 09:09:56,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 09:09:56,701 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 09:09:56,703 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 09:09:57,353 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 09:09:57,434 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 09:09:57,435 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 09:09:57,435 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:57 BoogieIcfgContainer [2023-11-23 09:09:57,435 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 09:09:57,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 09:09:57,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 09:09:57,439 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 09:09:57,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:09:54" (1/3) ... [2023-11-23 09:09:57,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46982c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:57, skipping insertion in model container [2023-11-23 09:09:57,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:09:56" (2/3) ... [2023-11-23 09:09:57,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46982c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:09:57, skipping insertion in model container [2023-11-23 09:09:57,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:09:57" (3/3) ... [2023-11-23 09:09:57,441 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_ignore_case_harness.i [2023-11-23 09:09:57,454 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 09:09:57,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 09:09:57,486 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 09:09:57,491 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;@283fe01e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 09:09:57,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 09:09:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 71 states have internal predecessors, (95), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-23 09:09:57,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 09:09:57,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:09:57,503 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 09:09:57,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:09:57,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:09:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash 320960093, now seen corresponding path program 1 times [2023-11-23 09:09:57,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:09:57,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748029846] [2023-11-23 09:09:57,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:09:57,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:09:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:57,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:57,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:57,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:09:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:57,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:09:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:09:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:09:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 09:09:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 09:09:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:09:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 09:09:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 09:09:58,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:09:58,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748029846] [2023-11-23 09:09:58,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748029846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:09:58,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:09:58,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 09:09:58,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059089414] [2023-11-23 09:09:58,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:09:58,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 09:09:58,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:09:58,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 09:09:58,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 09:09:58,079 INFO L87 Difference]: Start difference. First operand has 108 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 71 states have internal predecessors, (95), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 09:09:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:09:58,258 INFO L93 Difference]: Finished difference Result 206 states and 295 transitions. [2023-11-23 09:09:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 09:09:58,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 64 [2023-11-23 09:09:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:09:58,266 INFO L225 Difference]: With dead ends: 206 [2023-11-23 09:09:58,266 INFO L226 Difference]: Without dead ends: 106 [2023-11-23 09:09:58,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 09:09:58,271 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 55 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:09:58,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 117 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:09:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-23 09:09:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-11-23 09:09:58,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.318840579710145) internal successors, (91), 70 states have internal predecessors, (91), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 09:09:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 142 transitions. [2023-11-23 09:09:58,302 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 142 transitions. Word has length 64 [2023-11-23 09:09:58,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:09:58,303 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 142 transitions. [2023-11-23 09:09:58,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 09:09:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 142 transitions. [2023-11-23 09:09:58,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 09:09:58,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:09:58,306 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 09:09:58,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 09:09:58,306 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:09:58,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:09:58,307 INFO L85 PathProgramCache]: Analyzing trace with hash 955334427, now seen corresponding path program 1 times [2023-11-23 09:09:58,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:09:58,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884041824] [2023-11-23 09:09:58,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:09:58,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:09:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:09:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:09:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:09:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:09:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:09:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 09:09:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 09:09:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:09:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 09:09:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 09:09:58,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:09:58,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884041824] [2023-11-23 09:09:58,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884041824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:09:58,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707256262] [2023-11-23 09:09:58,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:09:58,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:09:58,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:09:58,821 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 09:09:58,832 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 09:09:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:09:59,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 2508 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 09:09:59,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:09:59,353 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 09:09:59,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:09:59,432 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 09:09:59,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707256262] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:09:59,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:09:59,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-23 09:09:59,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071382199] [2023-11-23 09:09:59,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:09:59,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 09:09:59,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:09:59,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 09:09:59,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-23 09:09:59,435 INFO L87 Difference]: Start difference. First operand 106 states and 142 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2023-11-23 09:09:59,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:09:59,797 INFO L93 Difference]: Finished difference Result 175 states and 238 transitions. [2023-11-23 09:09:59,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:09:59,799 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 64 [2023-11-23 09:09:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:09:59,801 INFO L225 Difference]: With dead ends: 175 [2023-11-23 09:09:59,801 INFO L226 Difference]: Without dead ends: 108 [2023-11-23 09:09:59,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-23 09:09:59,803 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 213 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:09:59,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 277 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:09:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-23 09:09:59,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-23 09:09:59,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 72 states have internal predecessors, (92), 26 states have call successors, (26), 10 states have call predecessors, (26), 11 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-23 09:09:59,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2023-11-23 09:09:59,829 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 64 [2023-11-23 09:09:59,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:09:59,829 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2023-11-23 09:09:59,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2023-11-23 09:09:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2023-11-23 09:09:59,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-23 09:09:59,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:09:59,831 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:09:59,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 09:10:00,046 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 09:10:00,047 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:00,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:00,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1027830697, now seen corresponding path program 1 times [2023-11-23 09:10:00,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:00,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141871012] [2023-11-23 09:10:00,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:00,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 09:10:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 09:10:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 09:10:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 09:10:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,407 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 09:10:00,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:00,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141871012] [2023-11-23 09:10:00,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141871012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:00,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:00,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 09:10:00,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184543747] [2023-11-23 09:10:00,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:00,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 09:10:00,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:00,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 09:10:00,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:10:00,410 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 09:10:00,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:00,655 INFO L93 Difference]: Finished difference Result 199 states and 272 transitions. [2023-11-23 09:10:00,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 09:10:00,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2023-11-23 09:10:00,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:00,656 INFO L225 Difference]: With dead ends: 199 [2023-11-23 09:10:00,657 INFO L226 Difference]: Without dead ends: 130 [2023-11-23 09:10:00,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:10:00,658 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 112 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:00,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 244 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:10:00,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-23 09:10:00,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 110. [2023-11-23 09:10:00,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 74 states have internal predecessors, (94), 26 states have call successors, (26), 10 states have call predecessors, (26), 11 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-23 09:10:00,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 146 transitions. [2023-11-23 09:10:00,666 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 146 transitions. Word has length 72 [2023-11-23 09:10:00,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:00,667 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 146 transitions. [2023-11-23 09:10:00,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 09:10:00,667 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 146 transitions. [2023-11-23 09:10:00,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-23 09:10:00,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:00,668 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:00,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 09:10:00,668 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:00,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:00,669 INFO L85 PathProgramCache]: Analyzing trace with hash -343976601, now seen corresponding path program 1 times [2023-11-23 09:10:00,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:00,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060533562] [2023-11-23 09:10:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:00,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 09:10:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 09:10:00,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 09:10:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 09:10:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:00,935 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 09:10:00,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:00,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060533562] [2023-11-23 09:10:00,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060533562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:00,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:00,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 09:10:00,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997387465] [2023-11-23 09:10:00,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:00,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 09:10:00,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:00,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 09:10:00,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:10:00,938 INFO L87 Difference]: Start difference. First operand 110 states and 146 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 09:10:01,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:01,157 INFO L93 Difference]: Finished difference Result 191 states and 259 transitions. [2023-11-23 09:10:01,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 09:10:01,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 72 [2023-11-23 09:10:01,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:01,159 INFO L225 Difference]: With dead ends: 191 [2023-11-23 09:10:01,159 INFO L226 Difference]: Without dead ends: 120 [2023-11-23 09:10:01,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:10:01,160 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 95 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:01,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 244 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:10:01,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-23 09:10:01,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2023-11-23 09:10:01,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 76 states have internal predecessors, (96), 26 states have call successors, (26), 10 states have call predecessors, (26), 11 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-23 09:10:01,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 148 transitions. [2023-11-23 09:10:01,168 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 148 transitions. Word has length 72 [2023-11-23 09:10:01,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:01,168 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 148 transitions. [2023-11-23 09:10:01,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 09:10:01,169 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 148 transitions. [2023-11-23 09:10:01,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-23 09:10:01,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:01,170 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:01,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 09:10:01,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:01,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:01,170 INFO L85 PathProgramCache]: Analyzing trace with hash 779684203, now seen corresponding path program 1 times [2023-11-23 09:10:01,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:01,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60074979] [2023-11-23 09:10:01,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:01,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:01,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:01,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:01,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:01,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:01,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 09:10:01,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 09:10:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:01,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 09:10:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:01,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 09:10:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:01,505 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 09:10:01,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:01,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60074979] [2023-11-23 09:10:01,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60074979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:01,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:01,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 09:10:01,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239387508] [2023-11-23 09:10:01,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:01,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 09:10:01,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:01,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 09:10:01,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:10:01,508 INFO L87 Difference]: Start difference. First operand 112 states and 148 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 09:10:01,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:01,788 INFO L93 Difference]: Finished difference Result 185 states and 250 transitions. [2023-11-23 09:10:01,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:10:01,789 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 72 [2023-11-23 09:10:01,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:01,793 INFO L225 Difference]: With dead ends: 185 [2023-11-23 09:10:01,793 INFO L226 Difference]: Without dead ends: 143 [2023-11-23 09:10:01,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:10:01,795 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 66 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:01,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 232 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:10:01,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2023-11-23 09:10:01,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2023-11-23 09:10:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 94 states have internal predecessors, (119), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (38), 36 states have call predecessors, (38), 36 states have call successors, (38) [2023-11-23 09:10:01,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 194 transitions. [2023-11-23 09:10:01,818 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 194 transitions. Word has length 72 [2023-11-23 09:10:01,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:01,818 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 194 transitions. [2023-11-23 09:10:01,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 09:10:01,819 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 194 transitions. [2023-11-23 09:10:01,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 09:10:01,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:01,821 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 09:10:01,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 09:10:01,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:01,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:01,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1898180229, now seen corresponding path program 1 times [2023-11-23 09:10:01,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:01,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201983804] [2023-11-23 09:10:01,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:01,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:02,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:02,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:02,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:02,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:02,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 09:10:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:02,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 09:10:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:02,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 09:10:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 09:10:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:02,419 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 09:10:02,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:02,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201983804] [2023-11-23 09:10:02,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201983804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:02,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:02,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 09:10:02,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008689564] [2023-11-23 09:10:02,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:02,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 09:10:02,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:02,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 09:10:02,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 09:10:02,421 INFO L87 Difference]: Start difference. First operand 141 states and 194 transitions. Second operand has 9 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 09:10:02,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:02,808 INFO L93 Difference]: Finished difference Result 151 states and 207 transitions. [2023-11-23 09:10:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 09:10:02,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 09:10:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:02,810 INFO L225 Difference]: With dead ends: 151 [2023-11-23 09:10:02,811 INFO L226 Difference]: Without dead ends: 144 [2023-11-23 09:10:02,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 09:10:02,811 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 82 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:02,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 498 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:10:02,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-23 09:10:02,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-11-23 09:10:02,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 94 states have (on average 1.2872340425531914) internal successors, (121), 97 states have internal predecessors, (121), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2023-11-23 09:10:02,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 200 transitions. [2023-11-23 09:10:02,821 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 200 transitions. Word has length 76 [2023-11-23 09:10:02,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:02,822 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 200 transitions. [2023-11-23 09:10:02,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 09:10:02,822 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 200 transitions. [2023-11-23 09:10:02,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 09:10:02,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:02,823 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:02,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 09:10:02,824 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:02,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:02,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1663675719, now seen corresponding path program 1 times [2023-11-23 09:10:02,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:02,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333366817] [2023-11-23 09:10:02,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:02,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:03,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:03,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:03,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:03,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:03,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:03,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:03,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:03,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:03,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:03,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 09:10:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 09:10:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:03,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 09:10:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:03,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 09:10:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:04,076 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 09:10:04,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:04,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333366817] [2023-11-23 09:10:04,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333366817] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:04,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591365211] [2023-11-23 09:10:04,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:04,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:04,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:04,079 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 09:10:04,107 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 09:10:04,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:04,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 2546 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 09:10:04,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:04,548 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 09:10:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 09:10:04,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:10:04,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591365211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:04,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:10:04,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2023-11-23 09:10:04,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147411588] [2023-11-23 09:10:04,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:04,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 09:10:04,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:04,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 09:10:04,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-23 09:10:04,745 INFO L87 Difference]: Start difference. First operand 144 states and 200 transitions. Second operand has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 09:10:07,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:10:09,495 WARN L539 Checker$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 09:10:11,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:10:13,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 09:10:15,911 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 09:10:16,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:16,104 INFO L93 Difference]: Finished difference Result 250 states and 340 transitions. [2023-11-23 09:10:16,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 09:10:16,106 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 80 [2023-11-23 09:10:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:16,107 INFO L225 Difference]: With dead ends: 250 [2023-11-23 09:10:16,107 INFO L226 Difference]: Without dead ends: 156 [2023-11-23 09:10:16,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-23 09:10:16,108 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 174 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 19 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:16,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 725 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 499 Invalid, 5 Unknown, 0 Unchecked, 11.2s Time] [2023-11-23 09:10:16,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-23 09:10:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 154. [2023-11-23 09:10:16,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 100 states have (on average 1.27) internal successors, (127), 102 states have internal predecessors, (127), 38 states have call successors, (38), 14 states have call predecessors, (38), 15 states have return successors, (39), 37 states have call predecessors, (39), 37 states have call successors, (39) [2023-11-23 09:10:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 204 transitions. [2023-11-23 09:10:16,121 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 204 transitions. Word has length 80 [2023-11-23 09:10:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:16,121 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 204 transitions. [2023-11-23 09:10:16,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 09:10:16,121 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 204 transitions. [2023-11-23 09:10:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-23 09:10:16,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:16,123 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:16,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 09:10:16,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-23 09:10:16,339 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:16,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:16,339 INFO L85 PathProgramCache]: Analyzing trace with hash 348183405, now seen corresponding path program 1 times [2023-11-23 09:10:16,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:16,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568342019] [2023-11-23 09:10:16,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:16,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:16,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:16,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:16,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:16,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:16,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:16,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:16,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 09:10:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:16,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 09:10:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:16,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:10:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:16,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 09:10:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 09:10:16,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:16,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568342019] [2023-11-23 09:10:16,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568342019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:16,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129424064] [2023-11-23 09:10:16,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:16,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:16,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:17,003 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 09:10:17,029 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 09:10:17,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:17,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 2550 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 09:10:17,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 09:10:17,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:10:17,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129424064] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:17,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:10:17,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-23 09:10:17,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092095767] [2023-11-23 09:10:17,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:17,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 09:10:17,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 09:10:17,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 09:10:17,438 INFO L87 Difference]: Start difference. First operand 154 states and 204 transitions. Second operand has 9 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 09:10:17,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:17,617 INFO L93 Difference]: Finished difference Result 252 states and 343 transitions. [2023-11-23 09:10:17,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 09:10:17,618 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 84 [2023-11-23 09:10:17,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:17,619 INFO L225 Difference]: With dead ends: 252 [2023-11-23 09:10:17,619 INFO L226 Difference]: Without dead ends: 160 [2023-11-23 09:10:17,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-23 09:10:17,619 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 13 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:17,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 927 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:10:17,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-23 09:10:17,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2023-11-23 09:10:17,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 106 states have internal predecessors, (130), 38 states have call successors, (38), 14 states have call predecessors, (38), 16 states have return successors, (42), 37 states have call predecessors, (42), 37 states have call successors, (42) [2023-11-23 09:10:17,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 210 transitions. [2023-11-23 09:10:17,634 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 210 transitions. Word has length 84 [2023-11-23 09:10:17,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:17,635 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 210 transitions. [2023-11-23 09:10:17,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 09:10:17,635 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 210 transitions. [2023-11-23 09:10:17,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 09:10:17,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:17,636 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 09:10:17,657 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 09:10:17,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:17,849 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:17,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:17,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1120566520, now seen corresponding path program 1 times [2023-11-23 09:10:17,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:17,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51304755] [2023-11-23 09:10:17,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:17,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:17,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:19,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:19,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:19,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:19,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:19,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 09:10:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:19,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 09:10:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:19,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:10:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:19,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 09:10:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 09:10:19,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:19,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51304755] [2023-11-23 09:10:19,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51304755] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:19,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379085319] [2023-11-23 09:10:19,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:19,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:19,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:19,368 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 09:10:19,434 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 09:10:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:19,825 INFO L262 TraceCheckSpWp]: Trace formula consists of 2555 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 09:10:19,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 09:10:20,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:10:20,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-11-23 09:10:20,659 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 09:10:20,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2023-11-23 09:10:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 09:10:20,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379085319] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:10:20,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:10:20,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 19 [2023-11-23 09:10:20,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539458879] [2023-11-23 09:10:20,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:10:20,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 09:10:20,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:20,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 09:10:20,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-11-23 09:10:20,694 INFO L87 Difference]: Start difference. First operand 158 states and 210 transitions. Second operand has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 18 states have internal predecessors, (85), 5 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-23 09:10:23,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:23,251 INFO L93 Difference]: Finished difference Result 327 states and 435 transitions. [2023-11-23 09:10:23,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-23 09:10:23,251 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 18 states have internal predecessors, (85), 5 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 86 [2023-11-23 09:10:23,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:23,253 INFO L225 Difference]: With dead ends: 327 [2023-11-23 09:10:23,253 INFO L226 Difference]: Without dead ends: 308 [2023-11-23 09:10:23,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 175 SyntacticMatches, 10 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=374, Invalid=1348, Unknown=0, NotChecked=0, Total=1722 [2023-11-23 09:10:23,254 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 311 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 1957 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 2053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:23,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 693 Invalid, 2053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1957 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-23 09:10:23,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-23 09:10:23,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 274. [2023-11-23 09:10:23,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 192 states have (on average 1.28125) internal successors, (246), 196 states have internal predecessors, (246), 57 states have call successors, (57), 20 states have call predecessors, (57), 24 states have return successors, (68), 57 states have call predecessors, (68), 55 states have call successors, (68) [2023-11-23 09:10:23,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 371 transitions. [2023-11-23 09:10:23,279 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 371 transitions. Word has length 86 [2023-11-23 09:10:23,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:23,280 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 371 transitions. [2023-11-23 09:10:23,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.473684210526316) internal successors, (85), 18 states have internal predecessors, (85), 5 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-23 09:10:23,281 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 371 transitions. [2023-11-23 09:10:23,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 09:10:23,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:23,286 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:23,302 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 09:10:23,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:23,502 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:23,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:23,502 INFO L85 PathProgramCache]: Analyzing trace with hash -419501942, now seen corresponding path program 1 times [2023-11-23 09:10:23,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:23,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254071778] [2023-11-23 09:10:23,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:23,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:23,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:23,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:23,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:23,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:23,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:23,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:23,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 09:10:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 09:10:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:23,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:10:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:23,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 09:10:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:23,957 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 09:10:23,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:23,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254071778] [2023-11-23 09:10:23,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254071778] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:23,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:23,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:10:23,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971496506] [2023-11-23 09:10:23,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:23,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:10:23,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:23,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:10:23,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:10:23,960 INFO L87 Difference]: Start difference. First operand 274 states and 371 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 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 09:10:24,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:24,228 INFO L93 Difference]: Finished difference Result 528 states and 745 transitions. [2023-11-23 09:10:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 09:10:24,228 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 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 86 [2023-11-23 09:10:24,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:24,230 INFO L225 Difference]: With dead ends: 528 [2023-11-23 09:10:24,230 INFO L226 Difference]: Without dead ends: 316 [2023-11-23 09:10:24,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-23 09:10:24,231 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 89 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:24,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 243 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:10:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-23 09:10:24,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 283. [2023-11-23 09:10:24,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 201 states have (on average 1.2686567164179106) internal successors, (255), 205 states have internal predecessors, (255), 57 states have call successors, (57), 20 states have call predecessors, (57), 24 states have return successors, (68), 57 states have call predecessors, (68), 55 states have call successors, (68) [2023-11-23 09:10:24,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 380 transitions. [2023-11-23 09:10:24,278 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 380 transitions. Word has length 86 [2023-11-23 09:10:24,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:24,278 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 380 transitions. [2023-11-23 09:10:24,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 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 09:10:24,278 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 380 transitions. [2023-11-23 09:10:24,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 09:10:24,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:24,280 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 09:10:24,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 09:10:24,280 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:24,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:24,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1612683662, now seen corresponding path program 1 times [2023-11-23 09:10:24,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:24,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517117653] [2023-11-23 09:10:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:24,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:24,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:25,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:25,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:25,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:25,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:25,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:25,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:25,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:25,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:25,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 09:10:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:25,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 09:10:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:25,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:10:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 09:10:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:25,675 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 09:10:25,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:25,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517117653] [2023-11-23 09:10:25,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517117653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:25,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764711204] [2023-11-23 09:10:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:25,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:25,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:25,697 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 09:10:25,698 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 09:10:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:26,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-23 09:10:26,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:26,492 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 25 treesize of output 13 [2023-11-23 09:10:26,561 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 25 treesize of output 13 [2023-11-23 09:10:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 26 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 09:10:27,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:10:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 09:10:27,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764711204] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:10:27,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:10:27,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 11] total 37 [2023-11-23 09:10:27,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933589615] [2023-11-23 09:10:27,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:10:27,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-23 09:10:27,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:27,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-23 09:10:27,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1182, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 09:10:27,925 INFO L87 Difference]: Start difference. First operand 283 states and 380 transitions. Second operand has 37 states, 36 states have (on average 4.083333333333333) internal successors, (147), 36 states have internal predecessors, (147), 12 states have call successors, (28), 5 states have call predecessors, (28), 10 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-23 09:10:31,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:31,296 INFO L93 Difference]: Finished difference Result 916 states and 1258 transitions. [2023-11-23 09:10:31,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-23 09:10:31,297 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.083333333333333) internal successors, (147), 36 states have internal predecessors, (147), 12 states have call successors, (28), 5 states have call predecessors, (28), 10 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) Word has length 86 [2023-11-23 09:10:31,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:31,299 INFO L225 Difference]: With dead ends: 916 [2023-11-23 09:10:31,299 INFO L226 Difference]: Without dead ends: 672 [2023-11-23 09:10:31,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 158 SyntacticMatches, 11 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1696 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=828, Invalid=4722, Unknown=0, NotChecked=0, Total=5550 [2023-11-23 09:10:31,302 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 668 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:31,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 818 Invalid, 2737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-23 09:10:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2023-11-23 09:10:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 590. [2023-11-23 09:10:31,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 441 states have (on average 1.2675736961451247) internal successors, (559), 455 states have internal predecessors, (559), 98 states have call successors, (98), 36 states have call predecessors, (98), 50 states have return successors, (148), 98 states have call predecessors, (148), 94 states have call successors, (148) [2023-11-23 09:10:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 805 transitions. [2023-11-23 09:10:31,337 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 805 transitions. Word has length 86 [2023-11-23 09:10:31,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:31,337 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 805 transitions. [2023-11-23 09:10:31,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.083333333333333) internal successors, (147), 36 states have internal predecessors, (147), 12 states have call successors, (28), 5 states have call predecessors, (28), 10 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-23 09:10:31,337 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 805 transitions. [2023-11-23 09:10:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 09:10:31,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:31,341 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 09:10:31,358 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-23 09:10:31,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 09:10:31,557 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:31,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:31,557 INFO L85 PathProgramCache]: Analyzing trace with hash 818595526, now seen corresponding path program 1 times [2023-11-23 09:10:31,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:31,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306311942] [2023-11-23 09:10:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:31,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:32,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:32,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:33,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:33,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:33,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:33,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:33,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 09:10:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:33,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 09:10:33,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:33,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:10:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:33,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 09:10:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 09:10:33,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:33,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306311942] [2023-11-23 09:10:33,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306311942] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:33,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143246472] [2023-11-23 09:10:33,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:33,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:33,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:33,629 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 09:10:33,653 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 09:10:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:34,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 63 conjunts are in the unsatisfiable core [2023-11-23 09:10:34,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:34,396 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 25 treesize of output 13 [2023-11-23 09:10:34,500 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 25 treesize of output 13 [2023-11-23 09:10:35,671 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 09:10:35,671 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:10:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 09:10:36,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143246472] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:10:36,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:10:36,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 12] total 42 [2023-11-23 09:10:36,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527393451] [2023-11-23 09:10:36,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:10:36,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-23 09:10:36,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:36,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-23 09:10:36,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1544, Unknown=0, NotChecked=0, Total=1722 [2023-11-23 09:10:36,188 INFO L87 Difference]: Start difference. First operand 590 states and 805 transitions. Second operand has 42 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 12 states have call successors, (28), 5 states have call predecessors, (28), 10 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-23 09:10:40,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:40,128 INFO L93 Difference]: Finished difference Result 773 states and 1007 transitions. [2023-11-23 09:10:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-23 09:10:40,129 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 12 states have call successors, (28), 5 states have call predecessors, (28), 10 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) Word has length 86 [2023-11-23 09:10:40,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:40,131 INFO L225 Difference]: With dead ends: 773 [2023-11-23 09:10:40,132 INFO L226 Difference]: Without dead ends: 719 [2023-11-23 09:10:40,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 155 SyntacticMatches, 11 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1913 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=865, Invalid=5141, Unknown=0, NotChecked=0, Total=6006 [2023-11-23 09:10:40,145 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 540 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 2758 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 2856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:40,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 753 Invalid, 2856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2758 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 09:10:40,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-11-23 09:10:40,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 655. [2023-11-23 09:10:40,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 504 states have (on average 1.253968253968254) internal successors, (632), 517 states have internal predecessors, (632), 98 states have call successors, (98), 39 states have call predecessors, (98), 52 states have return successors, (137), 98 states have call predecessors, (137), 94 states have call successors, (137) [2023-11-23 09:10:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 867 transitions. [2023-11-23 09:10:40,196 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 867 transitions. Word has length 86 [2023-11-23 09:10:40,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:40,197 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 867 transitions. [2023-11-23 09:10:40,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 3.5853658536585367) internal successors, (147), 41 states have internal predecessors, (147), 12 states have call successors, (28), 5 states have call predecessors, (28), 10 states have return successors, (27), 11 states have call predecessors, (27), 11 states have call successors, (27) [2023-11-23 09:10:40,197 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 867 transitions. [2023-11-23 09:10:40,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 09:10:40,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:40,199 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 09:10:40,215 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 09:10:40,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:40,415 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:40,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:40,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1332596204, now seen corresponding path program 1 times [2023-11-23 09:10:40,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:40,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385779870] [2023-11-23 09:10:40,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:40,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:40,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:40,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:40,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:40,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:40,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 09:10:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 09:10:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:40,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:10:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:40,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 09:10:40,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 09:10:40,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:40,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385779870] [2023-11-23 09:10:40,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385779870] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:40,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [884511691] [2023-11-23 09:10:40,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:40,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:40,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:40,711 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 09:10:40,724 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 09:10:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 2561 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 09:10:41,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:41,144 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 09:10:41,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:10:41,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [884511691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:41,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:10:41,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 09:10:41,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546094803] [2023-11-23 09:10:41,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:41,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 09:10:41,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:41,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 09:10:41,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 09:10:41,146 INFO L87 Difference]: Start difference. First operand 655 states and 867 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 09:10:41,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:41,250 INFO L93 Difference]: Finished difference Result 859 states and 1124 transitions. [2023-11-23 09:10:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:10:41,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-11-23 09:10:41,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:41,252 INFO L225 Difference]: With dead ends: 859 [2023-11-23 09:10:41,253 INFO L226 Difference]: Without dead ends: 335 [2023-11-23 09:10:41,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:10:41,256 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 6 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:41,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 385 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:10:41,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-11-23 09:10:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 323. [2023-11-23 09:10:41,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 237 states have (on average 1.2320675105485233) internal successors, (292), 239 states have internal predecessors, (292), 58 states have call successors, (58), 25 states have call predecessors, (58), 27 states have return successors, (65), 58 states have call predecessors, (65), 56 states have call successors, (65) [2023-11-23 09:10:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 415 transitions. [2023-11-23 09:10:41,284 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 415 transitions. Word has length 86 [2023-11-23 09:10:41,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:41,284 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 415 transitions. [2023-11-23 09:10:41,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 09:10:41,285 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 415 transitions. [2023-11-23 09:10:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 09:10:41,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:41,286 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:41,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 09:10:41,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:41,513 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:41,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:41,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2017201821, now seen corresponding path program 1 times [2023-11-23 09:10:41,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:41,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250092346] [2023-11-23 09:10:41,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:41,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:41,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 09:10:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 09:10:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:41,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:10:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:42,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 09:10:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:42,066 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-23 09:10:42,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:42,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250092346] [2023-11-23 09:10:42,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250092346] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:42,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:42,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 09:10:42,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303653812] [2023-11-23 09:10:42,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:42,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 09:10:42,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:42,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 09:10:42,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-23 09:10:42,068 INFO L87 Difference]: Start difference. First operand 323 states and 415 transitions. Second operand has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 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 09:10:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:42,555 INFO L93 Difference]: Finished difference Result 343 states and 436 transitions. [2023-11-23 09:10:42,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 09:10:42,556 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 88 [2023-11-23 09:10:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:42,557 INFO L225 Difference]: With dead ends: 343 [2023-11-23 09:10:42,557 INFO L226 Difference]: Without dead ends: 305 [2023-11-23 09:10:42,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-11-23 09:10:42,558 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 91 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:42,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 626 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 09:10:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-23 09:10:42,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 278. [2023-11-23 09:10:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 202 states have (on average 1.2326732673267327) internal successors, (249), 204 states have internal predecessors, (249), 50 states have call successors, (50), 24 states have call predecessors, (50), 25 states have return successors, (51), 49 states have call predecessors, (51), 48 states have call successors, (51) [2023-11-23 09:10:42,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 350 transitions. [2023-11-23 09:10:42,578 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 350 transitions. Word has length 88 [2023-11-23 09:10:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:42,578 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 350 transitions. [2023-11-23 09:10:42,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 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 09:10:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 350 transitions. [2023-11-23 09:10:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 09:10:42,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:42,579 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:42,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 09:10:42,580 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:42,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1403658207, now seen corresponding path program 1 times [2023-11-23 09:10:42,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:42,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804781163] [2023-11-23 09:10:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:42,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:43,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:43,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:10:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:43,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 09:10:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:43,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:43,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:43,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 09:10:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:43,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 09:10:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:43,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 09:10:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:43,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 09:10:43,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:43,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 09:10:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 09:10:44,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:44,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804781163] [2023-11-23 09:10:44,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804781163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:44,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:44,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 09:10:44,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050232243] [2023-11-23 09:10:44,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:44,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 09:10:44,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:44,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 09:10:44,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-11-23 09:10:44,126 INFO L87 Difference]: Start difference. First operand 278 states and 350 transitions. Second operand has 17 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 09:10:44,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:44,961 INFO L93 Difference]: Finished difference Result 296 states and 368 transitions. [2023-11-23 09:10:44,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 09:10:44,962 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 88 [2023-11-23 09:10:44,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:44,964 INFO L225 Difference]: With dead ends: 296 [2023-11-23 09:10:44,964 INFO L226 Difference]: Without dead ends: 240 [2023-11-23 09:10:44,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-11-23 09:10:44,967 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 119 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 1185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:44,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 713 Invalid, 1185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 09:10:44,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-11-23 09:10:45,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 212. [2023-11-23 09:10:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 156 states have (on average 1.2307692307692308) internal successors, (192), 158 states have internal predecessors, (192), 34 states have call successors, (34), 20 states have call predecessors, (34), 21 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-11-23 09:10:45,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 260 transitions. [2023-11-23 09:10:45,005 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 260 transitions. Word has length 88 [2023-11-23 09:10:45,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:45,005 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 260 transitions. [2023-11-23 09:10:45,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 09:10:45,005 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 260 transitions. [2023-11-23 09:10:45,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 09:10:45,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:45,006 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:45,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 09:10:45,007 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:45,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:45,007 INFO L85 PathProgramCache]: Analyzing trace with hash 9900003, now seen corresponding path program 1 times [2023-11-23 09:10:45,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:45,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580298226] [2023-11-23 09:10:45,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:45,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:10:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:10:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:10:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:10:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:10:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:10:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:10:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 09:10:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 09:10:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:45,553 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 09:10:45,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:45,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580298226] [2023-11-23 09:10:45,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580298226] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:45,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80826327] [2023-11-23 09:10:45,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:45,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:45,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:45,569 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 09:10:45,619 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 09:10:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:46,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 2684 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 09:10:46,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 09:10:46,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:10:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 09:10:46,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80826327] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:10:46,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:10:46,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2023-11-23 09:10:46,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001664033] [2023-11-23 09:10:46,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:10:46,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 09:10:46,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:46,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 09:10:46,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2023-11-23 09:10:46,327 INFO L87 Difference]: Start difference. First operand 212 states and 260 transitions. Second operand has 22 states, 18 states have (on average 4.666666666666667) internal successors, (84), 16 states have internal predecessors, (84), 9 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 13 states have call predecessors, (28), 9 states have call successors, (28) [2023-11-23 09:10:47,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:47,045 INFO L93 Difference]: Finished difference Result 240 states and 292 transitions. [2023-11-23 09:10:47,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 09:10:47,046 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 4.666666666666667) internal successors, (84), 16 states have internal predecessors, (84), 9 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 13 states have call predecessors, (28), 9 states have call successors, (28) Word has length 107 [2023-11-23 09:10:47,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:47,046 INFO L225 Difference]: With dead ends: 240 [2023-11-23 09:10:47,046 INFO L226 Difference]: Without dead ends: 212 [2023-11-23 09:10:47,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2023-11-23 09:10:47,047 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 163 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 789 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:47,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 789 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 09:10:47,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-23 09:10:47,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-11-23 09:10:47,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 156 states have (on average 1.2179487179487178) internal successors, (190), 158 states have internal predecessors, (190), 34 states have call successors, (34), 20 states have call predecessors, (34), 21 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-11-23 09:10:47,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 258 transitions. [2023-11-23 09:10:47,062 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 258 transitions. Word has length 107 [2023-11-23 09:10:47,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:47,062 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 258 transitions. [2023-11-23 09:10:47,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 4.666666666666667) internal successors, (84), 16 states have internal predecessors, (84), 9 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 13 states have call predecessors, (28), 9 states have call successors, (28) [2023-11-23 09:10:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 258 transitions. [2023-11-23 09:10:47,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 09:10:47,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:47,063 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:47,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-23 09:10:47,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 09:10:47,269 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:47,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash -842318429, now seen corresponding path program 1 times [2023-11-23 09:10:47,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:47,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71109421] [2023-11-23 09:10:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:47,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:10:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:10:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:10:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:10:47,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:10:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:10:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:10:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 09:10:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 09:10:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 09:10:47,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:47,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71109421] [2023-11-23 09:10:47,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71109421] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:47,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137287748] [2023-11-23 09:10:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:47,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:47,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:47,793 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:10:47,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 09:10:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:48,207 INFO L262 TraceCheckSpWp]: Trace formula consists of 2678 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 09:10:48,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 09:10:48,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:10:48,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137287748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:48,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:10:48,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-11-23 09:10:48,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916611529] [2023-11-23 09:10:48,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:48,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:10:48,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:48,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:10:48,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-23 09:10:48,324 INFO L87 Difference]: Start difference. First operand 212 states and 258 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 09:10:48,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:48,461 INFO L93 Difference]: Finished difference Result 298 states and 370 transitions. [2023-11-23 09:10:48,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 09:10:48,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 108 [2023-11-23 09:10:48,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:48,463 INFO L225 Difference]: With dead ends: 298 [2023-11-23 09:10:48,463 INFO L226 Difference]: Without dead ends: 232 [2023-11-23 09:10:48,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-11-23 09:10:48,464 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 8 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:48,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 560 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:10:48,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-23 09:10:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2023-11-23 09:10:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 168 states have (on average 1.2023809523809523) internal successors, (202), 170 states have internal predecessors, (202), 40 states have call successors, (40), 20 states have call predecessors, (40), 21 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2023-11-23 09:10:48,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 282 transitions. [2023-11-23 09:10:48,482 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 282 transitions. Word has length 108 [2023-11-23 09:10:48,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:48,482 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 282 transitions. [2023-11-23 09:10:48,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 09:10:48,483 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 282 transitions. [2023-11-23 09:10:48,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 09:10:48,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:48,484 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:48,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 09:10:48,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 09:10:48,700 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:48,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:48,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2124796457, now seen corresponding path program 1 times [2023-11-23 09:10:48,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:48,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56017719] [2023-11-23 09:10:48,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:48,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:49,093 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 1 [2023-11-23 09:10:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:49,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:10:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:10:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:10:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:10:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:10:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:10:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:10:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 09:10:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 09:10:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 09:10:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,228 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 09:10:49,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:49,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56017719] [2023-11-23 09:10:49,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56017719] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:49,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585950035] [2023-11-23 09:10:49,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:49,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:49,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:49,245 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:10:49,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 09:10:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:49,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 2695 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 09:10:49,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 09:10:49,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:10:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 09:10:49,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585950035] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:10:49,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:10:49,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2023-11-23 09:10:49,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571217124] [2023-11-23 09:10:49,945 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:10:49,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 09:10:49,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:49,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 09:10:49,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2023-11-23 09:10:49,947 INFO L87 Difference]: Start difference. First operand 230 states and 282 transitions. Second operand has 22 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 7 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 11 states have call predecessors, (28), 7 states have call successors, (28) [2023-11-23 09:10:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:50,487 INFO L93 Difference]: Finished difference Result 316 states and 382 transitions. [2023-11-23 09:10:50,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 09:10:50,488 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 7 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 11 states have call predecessors, (28), 7 states have call successors, (28) Word has length 114 [2023-11-23 09:10:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:50,490 INFO L225 Difference]: With dead ends: 316 [2023-11-23 09:10:50,490 INFO L226 Difference]: Without dead ends: 212 [2023-11-23 09:10:50,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2023-11-23 09:10:50,492 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 151 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:50,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 752 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 09:10:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-23 09:10:50,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-11-23 09:10:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 156 states have (on average 1.205128205128205) internal successors, (188), 158 states have internal predecessors, (188), 34 states have call successors, (34), 20 states have call predecessors, (34), 21 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-11-23 09:10:50,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 256 transitions. [2023-11-23 09:10:50,508 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 256 transitions. Word has length 114 [2023-11-23 09:10:50,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:50,510 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 256 transitions. [2023-11-23 09:10:50,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 7 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 11 states have call predecessors, (28), 7 states have call successors, (28) [2023-11-23 09:10:50,510 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 256 transitions. [2023-11-23 09:10:50,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 09:10:50,511 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:50,511 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:50,530 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 09:10:50,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 09:10:50,724 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:50,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:50,725 INFO L85 PathProgramCache]: Analyzing trace with hash 906767559, now seen corresponding path program 1 times [2023-11-23 09:10:50,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:50,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526113265] [2023-11-23 09:10:50,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:50,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:50,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:50,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:10:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:10:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:10:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:10:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:10:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:10:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:10:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:10:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 09:10:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 09:10:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-23 09:10:51,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:51,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526113265] [2023-11-23 09:10:51,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526113265] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:51,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:51,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:10:51,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251431613] [2023-11-23 09:10:51,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:51,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:10:51,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:51,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:10:51,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:10:51,067 INFO L87 Difference]: Start difference. First operand 212 states and 256 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 09:10:51,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:51,299 INFO L93 Difference]: Finished difference Result 240 states and 288 transitions. [2023-11-23 09:10:51,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:10:51,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 116 [2023-11-23 09:10:51,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:51,300 INFO L225 Difference]: With dead ends: 240 [2023-11-23 09:10:51,301 INFO L226 Difference]: Without dead ends: 212 [2023-11-23 09:10:51,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 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 09:10:51,301 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 109 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:51,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 198 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:10:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-23 09:10:51,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-11-23 09:10:51,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 156 states have (on average 1.1923076923076923) internal successors, (186), 158 states have internal predecessors, (186), 34 states have call successors, (34), 20 states have call predecessors, (34), 21 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-11-23 09:10:51,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 254 transitions. [2023-11-23 09:10:51,316 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 254 transitions. Word has length 116 [2023-11-23 09:10:51,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:51,316 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 254 transitions. [2023-11-23 09:10:51,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 09:10:51,317 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 254 transitions. [2023-11-23 09:10:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 09:10:51,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:51,318 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:51,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 09:10:51,318 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:51,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:51,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1083594704, now seen corresponding path program 1 times [2023-11-23 09:10:51,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:51,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365405364] [2023-11-23 09:10:51,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:51,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:51,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:10:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:10:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:10:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:10:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:10:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:10:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:10:51,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:10:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 09:10:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 09:10:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 09:10:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:51,604 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-23 09:10:51,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:51,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365405364] [2023-11-23 09:10:51,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365405364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:51,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:51,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 09:10:51,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755940491] [2023-11-23 09:10:51,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:51,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 09:10:51,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:51,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 09:10:51,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 09:10:51,608 INFO L87 Difference]: Start difference. First operand 212 states and 254 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 09:10:51,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:51,823 INFO L93 Difference]: Finished difference Result 278 states and 334 transitions. [2023-11-23 09:10:51,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 09:10:51,824 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 132 [2023-11-23 09:10:51,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:51,825 INFO L225 Difference]: With dead ends: 278 [2023-11-23 09:10:51,825 INFO L226 Difference]: Without dead ends: 212 [2023-11-23 09:10:51,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 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 09:10:51,826 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 56 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:51,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 156 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:10:51,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-23 09:10:51,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-11-23 09:10:51,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 156 states have (on average 1.1794871794871795) internal successors, (184), 158 states have internal predecessors, (184), 34 states have call successors, (34), 20 states have call predecessors, (34), 21 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-11-23 09:10:51,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 252 transitions. [2023-11-23 09:10:51,841 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 252 transitions. Word has length 132 [2023-11-23 09:10:51,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:51,841 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 252 transitions. [2023-11-23 09:10:51,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 09:10:51,842 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 252 transitions. [2023-11-23 09:10:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-23 09:10:51,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:51,843 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:10:51,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 09:10:51,843 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:51,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:51,843 INFO L85 PathProgramCache]: Analyzing trace with hash -2006088266, now seen corresponding path program 1 times [2023-11-23 09:10:51,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:51,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868684055] [2023-11-23 09:10:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:51,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:52,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:52,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:10:52,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:10:52,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:10:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:10:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:10:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:10:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:10:52,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:10:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 09:10:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 09:10:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 09:10:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 09:10:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 09:10:52,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:52,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868684055] [2023-11-23 09:10:52,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868684055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:52,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:52,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:10:52,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804968443] [2023-11-23 09:10:52,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:52,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:10:52,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:52,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:10:52,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:10:52,284 INFO L87 Difference]: Start difference. First operand 212 states and 252 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 09:10:52,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:52,584 INFO L93 Difference]: Finished difference Result 284 states and 338 transitions. [2023-11-23 09:10:52,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:10:52,585 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 138 [2023-11-23 09:10:52,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:52,586 INFO L225 Difference]: With dead ends: 284 [2023-11-23 09:10:52,586 INFO L226 Difference]: Without dead ends: 212 [2023-11-23 09:10:52,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-23 09:10:52,587 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 78 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:52,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 243 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:10:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-23 09:10:52,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-11-23 09:10:52,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 156 states have (on average 1.1666666666666667) internal successors, (182), 158 states have internal predecessors, (182), 34 states have call successors, (34), 20 states have call predecessors, (34), 21 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-11-23 09:10:52,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 250 transitions. [2023-11-23 09:10:52,603 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 250 transitions. Word has length 138 [2023-11-23 09:10:52,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:52,603 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 250 transitions. [2023-11-23 09:10:52,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 09:10:52,603 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 250 transitions. [2023-11-23 09:10:52,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-23 09:10:52,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:52,604 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:52,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 09:10:52,605 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:52,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:52,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1058350965, now seen corresponding path program 1 times [2023-11-23 09:10:52,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:52,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583064380] [2023-11-23 09:10:52,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:52,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:52,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:52,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:52,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:10:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:10:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:10:52,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:10:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:10:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:10:52,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:10:52,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:10:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 09:10:52,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 09:10:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 09:10:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:52,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 09:10:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:53,002 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 09:10:53,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:53,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583064380] [2023-11-23 09:10:53,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583064380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:53,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:53,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:10:53,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594631757] [2023-11-23 09:10:53,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:53,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:10:53,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:53,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:10:53,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:10:53,005 INFO L87 Difference]: Start difference. First operand 212 states and 250 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 09:10:53,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:53,318 INFO L93 Difference]: Finished difference Result 246 states and 288 transitions. [2023-11-23 09:10:53,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:10:53,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 144 [2023-11-23 09:10:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:53,320 INFO L225 Difference]: With dead ends: 246 [2023-11-23 09:10:53,320 INFO L226 Difference]: Without dead ends: 212 [2023-11-23 09:10:53,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 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 09:10:53,320 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 109 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:53,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 287 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:10:53,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-23 09:10:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2023-11-23 09:10:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 156 states have (on average 1.141025641025641) internal successors, (178), 158 states have internal predecessors, (178), 34 states have call successors, (34), 20 states have call predecessors, (34), 21 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-11-23 09:10:53,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 246 transitions. [2023-11-23 09:10:53,352 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 246 transitions. Word has length 144 [2023-11-23 09:10:53,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:53,352 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 246 transitions. [2023-11-23 09:10:53,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 09:10:53,352 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 246 transitions. [2023-11-23 09:10:53,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-23 09:10:53,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:53,353 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:53,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 09:10:53,354 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:53,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:53,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1736253608, now seen corresponding path program 1 times [2023-11-23 09:10:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:53,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824385191] [2023-11-23 09:10:53,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:53,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:53,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:10:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:10:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:10:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:10:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:10:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:10:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:10:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:10:54,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:54,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 09:10:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:55,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 09:10:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:55,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 09:10:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:55,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:55,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:55,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 09:10:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-23 09:10:55,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:55,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824385191] [2023-11-23 09:10:55,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824385191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:55,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:10:55,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-23 09:10:55,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826916654] [2023-11-23 09:10:55,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:55,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 09:10:55,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 09:10:55,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 09:10:55,042 INFO L87 Difference]: Start difference. First operand 212 states and 246 transitions. Second operand has 16 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 7 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-11-23 09:10:55,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:55,652 INFO L93 Difference]: Finished difference Result 286 states and 330 transitions. [2023-11-23 09:10:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 09:10:55,652 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 7 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 146 [2023-11-23 09:10:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:55,653 INFO L225 Difference]: With dead ends: 286 [2023-11-23 09:10:55,653 INFO L226 Difference]: Without dead ends: 212 [2023-11-23 09:10:55,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2023-11-23 09:10:55,654 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 178 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:55,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 377 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 09:10:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-23 09:10:55,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 208. [2023-11-23 09:10:55,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 152 states have (on average 1.131578947368421) internal successors, (172), 154 states have internal predecessors, (172), 34 states have call successors, (34), 20 states have call predecessors, (34), 21 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-11-23 09:10:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 240 transitions. [2023-11-23 09:10:55,669 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 240 transitions. Word has length 146 [2023-11-23 09:10:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:55,669 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 240 transitions. [2023-11-23 09:10:55,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 7 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-11-23 09:10:55,670 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 240 transitions. [2023-11-23 09:10:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 09:10:55,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:55,670 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:55,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 09:10:55,671 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:55,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:55,671 INFO L85 PathProgramCache]: Analyzing trace with hash 604907276, now seen corresponding path program 1 times [2023-11-23 09:10:55,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:55,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577505832] [2023-11-23 09:10:55,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:55,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:10:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:10:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:10:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:10:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:10:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:10:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:10:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:10:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:10:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:10:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 09:10:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 09:10:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 09:10:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:10:56,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:10:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 09:10:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-23 09:10:56,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:10:56,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577505832] [2023-11-23 09:10:56,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577505832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:10:56,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088343380] [2023-11-23 09:10:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:56,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:10:56,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:10:56,535 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:10:56,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 09:10:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:10:56,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 09:10:56,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:10:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 09:10:57,019 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 09:10:57,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088343380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:10:57,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 09:10:57,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 14 [2023-11-23 09:10:57,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230591205] [2023-11-23 09:10:57,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:10:57,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 09:10:57,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:10:57,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 09:10:57,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-23 09:10:57,021 INFO L87 Difference]: Start difference. First operand 208 states and 240 transitions. Second operand has 10 states, 8 states have (on average 9.5) internal successors, (76), 9 states have internal predecessors, (76), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 09:10:57,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:10:57,211 INFO L93 Difference]: Finished difference Result 284 states and 326 transitions. [2023-11-23 09:10:57,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 09:10:57,211 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.5) internal successors, (76), 9 states have internal predecessors, (76), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 150 [2023-11-23 09:10:57,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:10:57,212 INFO L225 Difference]: With dead ends: 284 [2023-11-23 09:10:57,212 INFO L226 Difference]: Without dead ends: 204 [2023-11-23 09:10:57,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-23 09:10:57,214 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 14 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:10:57,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 896 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 09:10:57,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-23 09:10:57,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 198. [2023-11-23 09:10:57,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 142 states have (on average 1.1126760563380282) internal successors, (158), 144 states have internal predecessors, (158), 34 states have call successors, (34), 20 states have call predecessors, (34), 21 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2023-11-23 09:10:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 226 transitions. [2023-11-23 09:10:57,229 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 226 transitions. Word has length 150 [2023-11-23 09:10:57,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:10:57,230 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 226 transitions. [2023-11-23 09:10:57,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.5) internal successors, (76), 9 states have internal predecessors, (76), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 09:10:57,230 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 226 transitions. [2023-11-23 09:10:57,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-23 09:10:57,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:10:57,231 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:10:57,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 09:10:57,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-23 09:10:57,459 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:10:57,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:10:57,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1146574233, now seen corresponding path program 1 times [2023-11-23 09:10:57,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:10:57,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091753454] [2023-11-23 09:10:57,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:10:57,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:10:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:01,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:01,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:11:01,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:11:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:11:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:11:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:11:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:11:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 09:11:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 09:11:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 09:11:01,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:11:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:01,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 09:11:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:02,069 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-23 09:11:02,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:02,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091753454] [2023-11-23 09:11:02,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091753454] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:11:02,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454213640] [2023-11-23 09:11:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:02,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:11:02,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:11:02,077 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:11:02,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 09:11:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:02,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 2819 conjuncts, 121 conjunts are in the unsatisfiable core [2023-11-23 09:11:02,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:11:02,663 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 09:11:02,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:11:02,671 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 0 case distinctions, treesize of input 24 treesize of output 16 [2023-11-23 09:11:02,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:11:02,687 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 09:11:02,687 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 09:11:02,696 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 09:11:03,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:11:03,731 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 09:11:04,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:11:04,086 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 09:11:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 133 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 09:11:15,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:11:19,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454213640] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:11:19,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:11:19,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 38] total 65 [2023-11-23 09:11:19,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288616346] [2023-11-23 09:11:19,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:11:19,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2023-11-23 09:11:19,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:19,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2023-11-23 09:11:19,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=5948, Unknown=1, NotChecked=0, Total=6320 [2023-11-23 09:11:19,798 INFO L87 Difference]: Start difference. First operand 198 states and 226 transitions. Second operand has 65 states, 51 states have (on average 3.0) internal successors, (153), 53 states have internal predecessors, (153), 21 states have call successors, (38), 7 states have call predecessors, (38), 15 states have return successors, (37), 21 states have call predecessors, (37), 20 states have call successors, (37) [2023-11-23 09:11:34,478 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 09:11:34,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:34,898 INFO L93 Difference]: Finished difference Result 288 states and 323 transitions. [2023-11-23 09:11:34,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-23 09:11:34,899 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 51 states have (on average 3.0) internal successors, (153), 53 states have internal predecessors, (153), 21 states have call successors, (38), 7 states have call predecessors, (38), 15 states have return successors, (37), 21 states have call predecessors, (37), 20 states have call successors, (37) Word has length 152 [2023-11-23 09:11:34,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:34,900 INFO L225 Difference]: With dead ends: 288 [2023-11-23 09:11:34,900 INFO L226 Difference]: Without dead ends: 286 [2023-11-23 09:11:34,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 152 SyntacticMatches, 15 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4903 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=1127, Invalid=15384, Unknown=1, NotChecked=0, Total=16512 [2023-11-23 09:11:34,903 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 216 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 4826 mSolverCounterSat, 98 mSolverCounterUnsat, 44 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 4968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 4826 IncrementalHoareTripleChecker+Invalid, 44 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:34,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1104 Invalid, 4968 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 4826 Invalid, 44 Unknown, 0 Unchecked, 8.4s Time] [2023-11-23 09:11:34,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-23 09:11:34,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 172. [2023-11-23 09:11:34,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 121 states have (on average 1.1239669421487604) internal successors, (136), 124 states have internal predecessors, (136), 27 states have call successors, (27), 21 states have call predecessors, (27), 23 states have return successors, (28), 26 states have call predecessors, (28), 26 states have call successors, (28) [2023-11-23 09:11:34,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 191 transitions. [2023-11-23 09:11:34,937 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 191 transitions. Word has length 152 [2023-11-23 09:11:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:34,938 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 191 transitions. [2023-11-23 09:11:34,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 51 states have (on average 3.0) internal successors, (153), 53 states have internal predecessors, (153), 21 states have call successors, (38), 7 states have call predecessors, (38), 15 states have return successors, (37), 21 states have call predecessors, (37), 20 states have call successors, (37) [2023-11-23 09:11:34,938 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 191 transitions. [2023-11-23 09:11:34,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-23 09:11:34,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:34,939 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:11:34,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 09:11:35,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-23 09:11:35,153 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:35,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:35,153 INFO L85 PathProgramCache]: Analyzing trace with hash 628433129, now seen corresponding path program 1 times [2023-11-23 09:11:35,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:35,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562119840] [2023-11-23 09:11:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:35,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:35,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:35,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:35,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:11:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:11:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:11:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:11:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:11:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:11:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 09:11:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 09:11:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 09:11:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:11:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 09:11:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:35,880 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 09:11:35,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:35,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562119840] [2023-11-23 09:11:35,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562119840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:11:35,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934593668] [2023-11-23 09:11:35,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:35,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:11:35,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:11:35,883 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:11:35,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 09:11:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:36,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 09:11:36,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:11:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 09:11:36,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:11:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 09:11:36,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934593668] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:11:36,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:11:36,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 34 [2023-11-23 09:11:36,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502963886] [2023-11-23 09:11:36,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:11:36,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-23 09:11:36,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:36,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-23 09:11:36,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1023, Unknown=0, NotChecked=0, Total=1122 [2023-11-23 09:11:36,804 INFO L87 Difference]: Start difference. First operand 172 states and 191 transitions. Second operand has 34 states, 28 states have (on average 4.285714285714286) internal successors, (120), 26 states have internal predecessors, (120), 8 states have call successors, (47), 4 states have call predecessors, (47), 9 states have return successors, (48), 14 states have call predecessors, (48), 7 states have call successors, (48) [2023-11-23 09:11:37,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:37,466 INFO L93 Difference]: Finished difference Result 197 states and 219 transitions. [2023-11-23 09:11:37,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 09:11:37,466 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 28 states have (on average 4.285714285714286) internal successors, (120), 26 states have internal predecessors, (120), 8 states have call successors, (47), 4 states have call predecessors, (47), 9 states have return successors, (48), 14 states have call predecessors, (48), 7 states have call successors, (48) Word has length 152 [2023-11-23 09:11:37,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:37,467 INFO L225 Difference]: With dead ends: 197 [2023-11-23 09:11:37,467 INFO L226 Difference]: Without dead ends: 183 [2023-11-23 09:11:37,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 325 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2023-11-23 09:11:37,468 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 90 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 1579 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:37,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 957 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1579 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 09:11:37,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-23 09:11:37,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 176. [2023-11-23 09:11:37,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 125 states have (on average 1.12) internal successors, (140), 128 states have internal predecessors, (140), 27 states have call successors, (27), 21 states have call predecessors, (27), 23 states have return successors, (28), 26 states have call predecessors, (28), 26 states have call successors, (28) [2023-11-23 09:11:37,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 195 transitions. [2023-11-23 09:11:37,522 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 195 transitions. Word has length 152 [2023-11-23 09:11:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:37,522 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 195 transitions. [2023-11-23 09:11:37,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 28 states have (on average 4.285714285714286) internal successors, (120), 26 states have internal predecessors, (120), 8 states have call successors, (47), 4 states have call predecessors, (47), 9 states have return successors, (48), 14 states have call predecessors, (48), 7 states have call successors, (48) [2023-11-23 09:11:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 195 transitions. [2023-11-23 09:11:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-23 09:11:37,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:37,523 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:11:37,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 09:11:37,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-23 09:11:37,739 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:37,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:37,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1308491499, now seen corresponding path program 1 times [2023-11-23 09:11:37,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:37,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169173274] [2023-11-23 09:11:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:37,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:38,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:11:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:11:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:11:38,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:11:38,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:11:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:11:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 09:11:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 09:11:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 09:11:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:11:38,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 09:11:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,373 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 09:11:38,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:38,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169173274] [2023-11-23 09:11:38,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169173274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:11:38,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051990739] [2023-11-23 09:11:38,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:38,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:11:38,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:11:38,375 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:11:38,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 09:11:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:38,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 2811 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 09:11:38,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:11:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 09:11:38,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:11:39,085 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 09:11:39,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051990739] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 09:11:39,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 09:11:39,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 15 [2023-11-23 09:11:39,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501867876] [2023-11-23 09:11:39,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 09:11:39,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 09:11:39,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:39,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 09:11:39,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-23 09:11:39,087 INFO L87 Difference]: Start difference. First operand 176 states and 195 transitions. Second operand has 15 states, 13 states have (on average 6.230769230769231) internal successors, (81), 11 states have internal predecessors, (81), 5 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 09:11:39,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:39,612 INFO L93 Difference]: Finished difference Result 199 states and 219 transitions. [2023-11-23 09:11:39,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 09:11:39,612 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.230769230769231) internal successors, (81), 11 states have internal predecessors, (81), 5 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) Word has length 152 [2023-11-23 09:11:39,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:39,613 INFO L225 Difference]: With dead ends: 199 [2023-11-23 09:11:39,613 INFO L226 Difference]: Without dead ends: 174 [2023-11-23 09:11:39,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-11-23 09:11:39,615 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 60 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:39,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 560 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 09:11:39,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-23 09:11:39,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 170. [2023-11-23 09:11:39,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 120 states have (on average 1.0916666666666666) internal successors, (131), 122 states have internal predecessors, (131), 27 states have call successors, (27), 21 states have call predecessors, (27), 22 states have return successors, (27), 26 states have call predecessors, (27), 26 states have call successors, (27) [2023-11-23 09:11:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 185 transitions. [2023-11-23 09:11:39,641 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 185 transitions. Word has length 152 [2023-11-23 09:11:39,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:39,642 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 185 transitions. [2023-11-23 09:11:39,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.230769230769231) internal successors, (81), 11 states have internal predecessors, (81), 5 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 09:11:39,642 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 185 transitions. [2023-11-23 09:11:39,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 09:11:39,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:39,642 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:11:39,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 09:11:39,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:11:39,859 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:39,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:39,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2112810101, now seen corresponding path program 1 times [2023-11-23 09:11:39,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:39,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271915700] [2023-11-23 09:11:39,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:39,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:40,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:40,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:40,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:11:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:11:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:11:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:11:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:40,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:11:41,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:41,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:11:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:41,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 09:11:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:41,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 09:11:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:41,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 09:11:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:41,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:41,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:11:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:41,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 09:11:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 09:11:41,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:41,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271915700] [2023-11-23 09:11:41,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271915700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:11:41,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912446269] [2023-11-23 09:11:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:41,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:11:41,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:11:41,155 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:11:41,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 09:11:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:41,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 2832 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-23 09:11:41,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:11:41,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 27 treesize of output 15 [2023-11-23 09:11:42,048 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 45 proven. 9 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2023-11-23 09:11:42,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:11:42,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-11-23 09:11:42,298 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 09:11:42,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2023-11-23 09:11:42,367 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 09:11:42,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912446269] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 09:11:42,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:11:42,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16, 15] total 27 [2023-11-23 09:11:42,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673698746] [2023-11-23 09:11:42,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:11:42,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 09:11:42,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:11:42,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 09:11:42,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2023-11-23 09:11:42,368 INFO L87 Difference]: Start difference. First operand 170 states and 185 transitions. Second operand has 11 states, 10 states have (on average 7.8) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-23 09:11:42,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:11:42,673 INFO L93 Difference]: Finished difference Result 208 states and 226 transitions. [2023-11-23 09:11:42,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 09:11:42,674 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 154 [2023-11-23 09:11:42,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:11:42,675 INFO L225 Difference]: With dead ends: 208 [2023-11-23 09:11:42,675 INFO L226 Difference]: Without dead ends: 188 [2023-11-23 09:11:42,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 328 SyntacticMatches, 9 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2023-11-23 09:11:42,675 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 24 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 09:11:42,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 869 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 09:11:42,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-23 09:11:42,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 181. [2023-11-23 09:11:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 128 states have (on average 1.0859375) internal successors, (139), 131 states have internal predecessors, (139), 29 states have call successors, (29), 21 states have call predecessors, (29), 23 states have return successors, (30), 28 states have call predecessors, (30), 28 states have call successors, (30) [2023-11-23 09:11:42,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 198 transitions. [2023-11-23 09:11:42,706 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 198 transitions. Word has length 154 [2023-11-23 09:11:42,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:11:42,706 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 198 transitions. [2023-11-23 09:11:42,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-23 09:11:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 198 transitions. [2023-11-23 09:11:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 09:11:42,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:11:42,707 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:11:42,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-23 09:11:42,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-23 09:11:42,908 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:11:42,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:11:42,908 INFO L85 PathProgramCache]: Analyzing trace with hash -242995149, now seen corresponding path program 1 times [2023-11-23 09:11:42,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:11:42,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433297305] [2023-11-23 09:11:42,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:42,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:11:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:44,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:11:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 09:11:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 09:11:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:11:44,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 09:11:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:11:44,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:11:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 09:11:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 09:11:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 09:11:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 09:11:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 09:11:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 09:11:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:11:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:11:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 09:11:44,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 09:11:44,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:11:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433297305] [2023-11-23 09:11:44,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433297305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:11:44,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449170333] [2023-11-23 09:11:44,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:11:44,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:11:44,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:11:44,593 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 09:11:44,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 09:11:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:11:45,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 2837 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-23 09:11:45,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:11:45,154 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 09:11:45,158 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 10 treesize of output 9 [2023-11-23 09:11:45,166 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-23 09:11:45,167 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 31 treesize of output 19 [2023-11-23 09:11:45,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:11:45,179 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 31 treesize of output 19 [2023-11-23 09:11:46,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:11:46,739 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 109 treesize of output 88 [2023-11-23 09:11:47,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:11:47,195 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 109 treesize of output 88 [2023-11-23 09:12:05,113 WARN L293 SmtUtils]: Spent 10.29s on a formula simplification. DAG size of input: 436 DAG size of output: 414 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-23 09:12:05,114 INFO L349 Elim1Store]: treesize reduction 50, result has 95.6 percent of original size [2023-11-23 09:12:05,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 14 select indices, 14 select index equivalence classes, 0 disjoint index pairs (out of 91 index pairs), introduced 22 new quantified variables, introduced 91 case distinctions, treesize of input 446 treesize of output 1335 [2023-11-23 09:12:15,675 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:20,153 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:52,885 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:53,291 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:54,508 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-23 09:12:54,996 WARN L667 sPolynomialRelations]: Constructing 256(two to the power of 8 dual juncts. [2023-11-23 09:12:55,368 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:55,626 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-23 09:12:55,919 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:56,198 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-23 09:12:56,600 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:56,797 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-23 09:12:57,016 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:57,291 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:57,572 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:58,092 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:58,242 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-23 09:12:58,436 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:58,730 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:12:59,034 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:00,146 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:01,223 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:01,740 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-23 09:13:01,963 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:02,311 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:02,910 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-23 09:13:03,131 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:03,403 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-23 09:13:03,686 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:04,145 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:05,112 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:06,170 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:07,373 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:12,851 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:14,220 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:14,834 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:15,148 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-23 09:13:15,432 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:15,507 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:15,919 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:15,988 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:19,606 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:24,916 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:29,197 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:30,398 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:31,093 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:31,566 WARN L667 sPolynomialRelations]: Constructing 128(two to the power of 7 dual juncts. [2023-11-23 09:13:31,805 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:32,171 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:34,281 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:41,325 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. [2023-11-23 09:13:48,532 WARN L667 sPolynomialRelations]: Constructing 64(two to the power of 6 dual juncts. Killed by 15