./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_satisfies_pred_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 21e14c4abf3c8c626ff1e4d64bac7246a96ab8c19ab8b6f263006a7e1f8fc191 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:13:25,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:13:25,254 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:13:25,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:13:25,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:13:25,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:13:25,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:13:25,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:13:25,295 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:13:25,298 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:13:25,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:13:25,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:13:25,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:13:25,301 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:13:25,301 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:13:25,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:13:25,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:13:25,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:13:25,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:13:25,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:13:25,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:13:25,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:13:25,302 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:13:25,303 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:13:25,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:13:25,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:13:25,304 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:13:25,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:13:25,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:13:25,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:13:25,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:13:25,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:13:25,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:13:25,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:13:25,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:13:25,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:13:25,306 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:13:25,306 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:13:25,306 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:13:25,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21e14c4abf3c8c626ff1e4d64bac7246a96ab8c19ab8b6f263006a7e1f8fc191 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:13:25,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:13:25,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:13:25,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:13:25,509 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:13:25,510 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:13:25,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i [2023-11-23 07:13:26,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:13:27,136 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:13:27,137 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i [2023-11-23 07:13:27,171 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/918e72810/1b6d490e48ad45cbad08b4d807b59f16/FLAGe2ecc885d [2023-11-23 07:13:27,192 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/918e72810/1b6d490e48ad45cbad08b4d807b59f16 [2023-11-23 07:13:27,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:13:27,196 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:13:27,199 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:13:27,199 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:13:27,204 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:13:27,205 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:13:27" (1/1) ... [2023-11-23 07:13:27,205 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779a656f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:27, skipping insertion in model container [2023-11-23 07:13:27,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:13:27" (1/1) ... [2023-11-23 07:13:27,300 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:13:27,765 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4504,4517] [2023-11-23 07:13:27,774 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4564,4577] [2023-11-23 07:13:28,523 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:28,523 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:28,524 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:28,525 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:28,526 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:28,534 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:28,534 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:28,536 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:28,536 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,207 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:13:29,225 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:13:29,227 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:13:29,229 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:13:29,233 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:13:29,233 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:13:29,234 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:13:29,235 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:13:29,236 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:13:29,237 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:13:29,612 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,613 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,653 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:13:29,688 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:13:29,705 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4504,4517] [2023-11-23 07:13:29,706 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_cursor_satisfies_pred_harness.i[4564,4577] [2023-11-23 07:13:29,747 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,764 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,765 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,766 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,766 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,775 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,775 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,776 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,777 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,829 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:13:29,830 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:13:29,830 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:13:29,831 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:13:29,831 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:13:29,831 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:13:29,832 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:13:29,832 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:13:29,832 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:13:29,832 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:13:29,908 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8271] [2023-11-23 07:13:29,909 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,910 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:13:29,925 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8757-8768] [2023-11-23 07:13:29,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:13:30,172 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,173 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,173 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,173 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,173 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,173 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,174 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,174 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,174 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,174 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,174 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,174 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,174 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,175 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,175 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,175 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,175 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,176 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:13:30,182 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:13:30,183 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30 WrapperNode [2023-11-23 07:13:30,183 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:13:30,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:13:30,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:13:30,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:13:30,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (1/1) ... [2023-11-23 07:13:30,353 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (1/1) ... [2023-11-23 07:13:30,423 INFO L138 Inliner]: procedures = 689, calls = 2617, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 810 [2023-11-23 07:13:30,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:13:30,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:13:30,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:13:30,426 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:13:30,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (1/1) ... [2023-11-23 07:13:30,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (1/1) ... [2023-11-23 07:13:30,445 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (1/1) ... [2023-11-23 07:13:30,503 INFO L188 MemorySlicer]: Split 538 memory accesses to 9 slices as follows [2, 5, 3, 256, 236, 24, 6, 3, 3]. 48 percent of accesses are in the largest equivalence class. The 506 initializations are split as follows [2, 5, 0, 256, 236, 2, 0, 2, 3]. The 5 writes are split as follows [0, 0, 0, 0, 0, 3, 2, 0, 0]. [2023-11-23 07:13:30,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (1/1) ... [2023-11-23 07:13:30,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (1/1) ... [2023-11-23 07:13:30,543 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (1/1) ... [2023-11-23 07:13:30,548 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (1/1) ... [2023-11-23 07:13:30,566 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (1/1) ... [2023-11-23 07:13:30,571 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (1/1) ... [2023-11-23 07:13:30,591 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:13:30,592 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:13:30,593 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:13:30,593 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:13:30,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (1/1) ... [2023-11-23 07:13:30,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:13:30,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:13:30,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 07:13:30,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 07:13:30,707 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 07:13:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 07:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:13:30,708 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:13:30,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:13:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:13:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 07:13:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 07:13:30,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 07:13:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:13:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:13:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_left_trim_pred [2023-11-23 07:13:30,710 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_left_trim_pred [2023-11-23 07:13:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:13:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:13:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:13:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:13:30,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:13:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:13:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:13:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:13:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:13:30,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 07:13:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 07:13:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:13:30,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:13:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:13:30,712 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:13:30,712 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 07:13:30,713 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 07:13:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:13:30,713 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:13:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:13:30,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 07:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 07:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 07:13:30,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 07:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 07:13:30,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-23 07:13:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~uint8_t~0~TO~int [2023-11-23 07:13:30,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~uint8_t~0~TO~int [2023-11-23 07:13:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:13:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:13:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:13:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:13:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:13:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:13:30,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 07:13:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 07:13:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 07:13:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:13:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:13:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:13:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:13:30,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:13:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:13:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 07:13:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 07:13:30,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 07:13:30,983 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:13:30,985 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:13:31,595 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:13:31,776 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:13:31,777 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 07:13:31,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:13:31 BoogieIcfgContainer [2023-11-23 07:13:31,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:13:31,779 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:13:31,779 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:13:31,782 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:13:31,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:13:27" (1/3) ... [2023-11-23 07:13:31,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44923f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:13:31, skipping insertion in model container [2023-11-23 07:13:31,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:13:30" (2/3) ... [2023-11-23 07:13:31,783 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44923f0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:13:31, skipping insertion in model container [2023-11-23 07:13:31,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:13:31" (3/3) ... [2023-11-23 07:13:31,784 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_cursor_satisfies_pred_harness.i [2023-11-23 07:13:31,799 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:13:31,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:13:31,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:13:31,842 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;@71ddec3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:13:31,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:13:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 50 states have (on average 1.3) internal successors, (65), 51 states have internal predecessors, (65), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-23 07:13:31,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 07:13:31,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:13:31,854 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:13:31,855 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:13:31,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:13:31,859 INFO L85 PathProgramCache]: Analyzing trace with hash -532299695, now seen corresponding path program 1 times [2023-11-23 07:13:31,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:13:31,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310796457] [2023-11-23 07:13:31,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:31,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:13:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:13:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:32,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:13:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:32,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:13:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:32,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:13:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:32,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:13:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:13:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:32,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:13:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:13:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 07:13:32,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:13:32,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310796457] [2023-11-23 07:13:32,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310796457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:13:32,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:13:32,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 07:13:32,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730019415] [2023-11-23 07:13:32,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:13:32,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 07:13:32,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:13:32,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 07:13:32,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:13:32,382 INFO L87 Difference]: Start difference. First operand has 82 states, 50 states have (on average 1.3) internal successors, (65), 51 states have internal predecessors, (65), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:13:32,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:13:32,577 INFO L93 Difference]: Finished difference Result 162 states and 229 transitions. [2023-11-23 07:13:32,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 07:13:32,580 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2023-11-23 07:13:32,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:13:32,586 INFO L225 Difference]: With dead ends: 162 [2023-11-23 07:13:32,586 INFO L226 Difference]: Without dead ends: 76 [2023-11-23 07:13:32,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:13:32,591 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:13:32,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:13:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-23 07:13:32,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-23 07:13:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 46 states have (on average 1.2173913043478262) internal successors, (56), 47 states have internal predecessors, (56), 22 states have call successors, (22), 8 states have call predecessors, (22), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-23 07:13:32,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2023-11-23 07:13:32,625 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 54 [2023-11-23 07:13:32,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:13:32,625 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2023-11-23 07:13:32,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:13:32,626 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2023-11-23 07:13:32,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 07:13:32,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:13:32,628 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:13:32,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 07:13:32,628 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:13:32,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:13:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1011012548, now seen corresponding path program 1 times [2023-11-23 07:13:32,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:13:32,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144456385] [2023-11-23 07:13:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:32,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:13:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:33,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:13:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:33,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:13:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:33,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:13:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:33,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:13:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:13:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:33,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:13:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:13:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:13:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:33,187 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 07:13:33,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:13:33,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144456385] [2023-11-23 07:13:33,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144456385] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:13:33,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716408667] [2023-11-23 07:13:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:33,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:13:33,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:13:33,198 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:13:33,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 07:13:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:33,715 INFO L262 TraceCheckSpWp]: Trace formula consists of 2542 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:13:33,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:13:33,810 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 07:13:33,810 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:13:33,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716408667] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:13:33,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:13:33,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-23 07:13:33,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163367726] [2023-11-23 07:13:33,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:13:33,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:13:33,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:13:33,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:13:33,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:13:33,814 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:13:34,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:13:34,307 INFO L93 Difference]: Finished difference Result 139 states and 184 transitions. [2023-11-23 07:13:34,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:13:34,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-11-23 07:13:34,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:13:34,310 INFO L225 Difference]: With dead ends: 139 [2023-11-23 07:13:34,310 INFO L226 Difference]: Without dead ends: 78 [2023-11-23 07:13:34,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:13:34,312 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 23 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:13:34,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 270 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:13:34,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-23 07:13:34,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-23 07:13:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 49 states have internal predecessors, (57), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2023-11-23 07:13:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 103 transitions. [2023-11-23 07:13:34,322 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 103 transitions. Word has length 56 [2023-11-23 07:13:34,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:13:34,322 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 103 transitions. [2023-11-23 07:13:34,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:13:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 103 transitions. [2023-11-23 07:13:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-23 07:13:34,324 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:13:34,324 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:13:34,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 07:13:34,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:13:34,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:13:34,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:13:34,542 INFO L85 PathProgramCache]: Analyzing trace with hash -544756703, now seen corresponding path program 1 times [2023-11-23 07:13:34,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:13:34,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58707707] [2023-11-23 07:13:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:34,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:13:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:35,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:13:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:35,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:13:35,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:35,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:13:35,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:13:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:35,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 07:13:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:35,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 07:13:35,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:13:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:13:35,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 07:13:35,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:13:35,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58707707] [2023-11-23 07:13:35,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58707707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:13:35,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194395963] [2023-11-23 07:13:35,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:35,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:13:35,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:13:35,411 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:13:35,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 07:13:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:35,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 2547 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 07:13:35,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:13:35,927 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 07:13:35,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:13:35,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194395963] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:13:35,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:13:35,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2023-11-23 07:13:35,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208780361] [2023-11-23 07:13:35,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:13:35,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:13:35,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:13:35,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:13:35,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:13:35,929 INFO L87 Difference]: Start difference. First operand 78 states and 103 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:13:36,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:13:36,535 INFO L93 Difference]: Finished difference Result 132 states and 173 transitions. [2023-11-23 07:13:36,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:13:36,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 58 [2023-11-23 07:13:36,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:13:36,537 INFO L225 Difference]: With dead ends: 132 [2023-11-23 07:13:36,537 INFO L226 Difference]: Without dead ends: 78 [2023-11-23 07:13:36,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:13:36,538 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 43 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:13:36,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 410 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 07:13:36,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-23 07:13:36,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-23 07:13:36,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 49 states have internal predecessors, (57), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2023-11-23 07:13:36,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2023-11-23 07:13:36,545 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 58 [2023-11-23 07:13:36,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:13:36,545 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2023-11-23 07:13:36,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:13:36,546 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2023-11-23 07:13:36,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 07:13:36,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:13:36,547 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:13:36,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:13:36,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 07:13:36,763 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:13:36,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:13:36,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1279648151, now seen corresponding path program 1 times [2023-11-23 07:13:36,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:13:36,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789161839] [2023-11-23 07:13:36,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:36,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:13:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:37,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:13:37,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:13:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:37,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:13:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:37,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:13:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:37,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 07:13:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:37,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:13:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:13:37,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:13:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 07:13:37,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:13:37,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789161839] [2023-11-23 07:13:37,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789161839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:13:37,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:13:37,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 07:13:37,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710084045] [2023-11-23 07:13:37,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:13:37,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:13:37,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:13:37,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:13:37,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:13:37,421 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 07:13:38,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:13:38,118 INFO L93 Difference]: Finished difference Result 89 states and 116 transitions. [2023-11-23 07:13:38,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:13:38,118 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 62 [2023-11-23 07:13:38,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:13:38,121 INFO L225 Difference]: With dead ends: 89 [2023-11-23 07:13:38,122 INFO L226 Difference]: Without dead ends: 87 [2023-11-23 07:13:38,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:13:38,126 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 17 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:13:38,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 579 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:13:38,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-23 07:13:38,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2023-11-23 07:13:38,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 55 states have internal predecessors, (62), 23 states have call successors, (23), 9 states have call predecessors, (23), 10 states have return successors, (28), 21 states have call predecessors, (28), 21 states have call successors, (28) [2023-11-23 07:13:38,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 113 transitions. [2023-11-23 07:13:38,142 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 113 transitions. Word has length 62 [2023-11-23 07:13:38,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:13:38,143 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 113 transitions. [2023-11-23 07:13:38,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 4.666666666666667) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 07:13:38,143 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 113 transitions. [2023-11-23 07:13:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 07:13:38,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:13:38,147 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:13:38,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 07:13:38,148 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:13:38,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:13:38,148 INFO L85 PathProgramCache]: Analyzing trace with hash -751944369, now seen corresponding path program 1 times [2023-11-23 07:13:38,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:13:38,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047524184] [2023-11-23 07:13:38,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:38,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:13:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:39,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:13:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:39,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:13:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:39,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:13:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:39,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:13:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:39,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 07:13:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:39,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:13:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:39,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:13:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:39,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:13:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-23 07:13:39,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:13:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047524184] [2023-11-23 07:13:39,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047524184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:13:39,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870308072] [2023-11-23 07:13:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:39,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:13:39,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:13:39,778 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:13:39,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 07:13:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:40,347 INFO L262 TraceCheckSpWp]: Trace formula consists of 2569 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-23 07:13:40,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:13:40,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:13:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 07:13:41,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:13:41,312 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 07:13:41,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870308072] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:13:41,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:13:41,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 12] total 27 [2023-11-23 07:13:41,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798102632] [2023-11-23 07:13:41,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:13:41,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 07:13:41,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:13:41,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 07:13:41,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2023-11-23 07:13:41,315 INFO L87 Difference]: Start difference. First operand 86 states and 113 transitions. Second operand has 27 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 10 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-23 07:13:44,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:13:44,033 INFO L93 Difference]: Finished difference Result 260 states and 354 transitions. [2023-11-23 07:13:44,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-23 07:13:44,034 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 10 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) Word has length 66 [2023-11-23 07:13:44,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:13:44,038 INFO L225 Difference]: With dead ends: 260 [2023-11-23 07:13:44,038 INFO L226 Difference]: Without dead ends: 190 [2023-11-23 07:13:44,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 120 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=267, Invalid=1713, Unknown=0, NotChecked=0, Total=1980 [2023-11-23 07:13:44,039 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 193 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1159 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:13:44,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 783 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1159 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 07:13:44,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-23 07:13:44,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 173. [2023-11-23 07:13:44,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 110 states have internal predecessors, (126), 47 states have call successors, (47), 17 states have call predecessors, (47), 19 states have return successors, (58), 45 states have call predecessors, (58), 43 states have call successors, (58) [2023-11-23 07:13:44,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 231 transitions. [2023-11-23 07:13:44,089 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 231 transitions. Word has length 66 [2023-11-23 07:13:44,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:13:44,089 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 231 transitions. [2023-11-23 07:13:44,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 10 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (16), 8 states have call predecessors, (16), 7 states have call successors, (16) [2023-11-23 07:13:44,089 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 231 transitions. [2023-11-23 07:13:44,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-23 07:13:44,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:13:44,091 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:13:44,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:13:44,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:13:44,309 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:13:44,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:13:44,309 INFO L85 PathProgramCache]: Analyzing trace with hash 2086396830, now seen corresponding path program 1 times [2023-11-23 07:13:44,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:13:44,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221220932] [2023-11-23 07:13:44,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:44,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:13:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:44,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:13:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:44,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:13:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:44,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:13:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:44,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:13:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:44,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:13:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:44,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:13:44,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:44,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:13:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:44,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:13:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 07:13:44,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:13:44,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221220932] [2023-11-23 07:13:44,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221220932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:13:44,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:13:44,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 07:13:44,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841856891] [2023-11-23 07:13:44,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:13:44,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 07:13:44,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:13:44,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 07:13:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 07:13:44,584 INFO L87 Difference]: Start difference. First operand 173 states and 231 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:13:44,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:13:44,903 INFO L93 Difference]: Finished difference Result 241 states and 320 transitions. [2023-11-23 07:13:44,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 07:13:44,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2023-11-23 07:13:44,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:13:44,908 INFO L225 Difference]: With dead ends: 241 [2023-11-23 07:13:44,909 INFO L226 Difference]: Without dead ends: 176 [2023-11-23 07:13:44,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 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 07:13:44,910 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:13:44,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:13:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-23 07:13:44,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-11-23 07:13:44,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 109 states have (on average 1.18348623853211) internal successors, (129), 113 states have internal predecessors, (129), 47 states have call successors, (47), 17 states have call predecessors, (47), 19 states have return successors, (58), 45 states have call predecessors, (58), 43 states have call successors, (58) [2023-11-23 07:13:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 234 transitions. [2023-11-23 07:13:44,941 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 234 transitions. Word has length 73 [2023-11-23 07:13:44,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:13:44,942 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 234 transitions. [2023-11-23 07:13:44,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:13:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 234 transitions. [2023-11-23 07:13:44,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-23 07:13:44,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:13:44,943 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:13:44,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 07:13:44,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:13:44,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:13:44,944 INFO L85 PathProgramCache]: Analyzing trace with hash -32074318, now seen corresponding path program 1 times [2023-11-23 07:13:44,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:13:44,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828441721] [2023-11-23 07:13:44,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:44,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:13:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:45,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:13:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:45,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:13:45,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:45,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:13:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:45,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:13:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:45,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 07:13:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:45,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:13:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:45,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:13:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:45,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:13:45,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:45,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:13:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:45,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:13:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:45,389 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 07:13:45,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:13:45,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828441721] [2023-11-23 07:13:45,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828441721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:13:45,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:13:45,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:13:45,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284276428] [2023-11-23 07:13:45,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:13:45,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:13:45,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:13:45,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:13:45,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:13:45,391 INFO L87 Difference]: Start difference. First operand 176 states and 234 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:13:45,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:13:45,901 INFO L93 Difference]: Finished difference Result 258 states and 336 transitions. [2023-11-23 07:13:45,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:13:45,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2023-11-23 07:13:45,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:13:45,906 INFO L225 Difference]: With dead ends: 258 [2023-11-23 07:13:45,907 INFO L226 Difference]: Without dead ends: 172 [2023-11-23 07:13:45,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:13:45,909 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 15 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:13:45,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 300 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:13:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-23 07:13:45,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-11-23 07:13:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 109 states have internal predecessors, (125), 47 states have call successors, (47), 17 states have call predecessors, (47), 17 states have return successors, (55), 45 states have call predecessors, (55), 43 states have call successors, (55) [2023-11-23 07:13:45,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 227 transitions. [2023-11-23 07:13:45,936 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 227 transitions. Word has length 73 [2023-11-23 07:13:45,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:13:45,936 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 227 transitions. [2023-11-23 07:13:45,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:13:45,937 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 227 transitions. [2023-11-23 07:13:45,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 07:13:45,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:13:45,938 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:13:45,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 07:13:45,938 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:13:45,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:13:45,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1540145073, now seen corresponding path program 1 times [2023-11-23 07:13:45,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:13:45,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407336141] [2023-11-23 07:13:45,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:45,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:13:46,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:46,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:13:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:13:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:46,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:13:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:46,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:13:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:46,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:13:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:46,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:13:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:46,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:13:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:46,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 07:13:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:46,678 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-23 07:13:46,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:13:46,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407336141] [2023-11-23 07:13:46,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407336141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:13:46,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229437024] [2023-11-23 07:13:46,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:46,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:13:46,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:13:46,697 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:13:46,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 07:13:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:47,196 INFO L262 TraceCheckSpWp]: Trace formula consists of 2593 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 07:13:47,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:13:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 07:13:47,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:13:47,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229437024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:13:47,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:13:47,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 11 [2023-11-23 07:13:47,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981827106] [2023-11-23 07:13:47,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:13:47,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:13:47,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:13:47,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:13:47,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:13:47,234 INFO L87 Difference]: Start difference. First operand 172 states and 227 transitions. Second operand has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:13:48,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:13:48,295 INFO L93 Difference]: Finished difference Result 252 states and 332 transitions. [2023-11-23 07:13:48,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:13:48,297 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2023-11-23 07:13:48,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:13:48,299 INFO L225 Difference]: With dead ends: 252 [2023-11-23 07:13:48,299 INFO L226 Difference]: Without dead ends: 180 [2023-11-23 07:13:48,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 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 07:13:48,301 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 13 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:13:48,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 649 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 07:13:48,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-23 07:13:48,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2023-11-23 07:13:48,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 113 states have internal predecessors, (128), 47 states have call successors, (47), 17 states have call predecessors, (47), 18 states have return successors, (60), 45 states have call predecessors, (60), 43 states have call successors, (60) [2023-11-23 07:13:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 235 transitions. [2023-11-23 07:13:48,334 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 235 transitions. Word has length 74 [2023-11-23 07:13:48,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:13:48,335 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 235 transitions. [2023-11-23 07:13:48,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:13:48,335 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 235 transitions. [2023-11-23 07:13:48,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-23 07:13:48,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:13:48,336 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2023-11-23 07:13:48,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 07:13:48,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:13:48,559 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:13:48,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:13:48,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1022018306, now seen corresponding path program 1 times [2023-11-23 07:13:48,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:13:48,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571237926] [2023-11-23 07:13:48,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:48,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:13:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:49,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:13:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:49,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:13:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:49,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:13:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:13:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:49,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:13:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:49,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:13:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:49,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:13:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:49,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:13:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:49,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:13:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:49,253 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 07:13:49,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:13:49,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571237926] [2023-11-23 07:13:49,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571237926] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:13:49,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125520610] [2023-11-23 07:13:49,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:49,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:13:49,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:13:49,255 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:13:49,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 07:13:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:49,750 INFO L262 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 07:13:49,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:13:49,779 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 07:13:49,784 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:13:49,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125520610] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:13:49,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:13:49,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 10 [2023-11-23 07:13:49,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631707801] [2023-11-23 07:13:49,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:13:49,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:13:49,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:13:49,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:13:49,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:13:49,787 INFO L87 Difference]: Start difference. First operand 176 states and 235 transitions. Second operand has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 07:13:50,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:13:50,543 INFO L93 Difference]: Finished difference Result 311 states and 413 transitions. [2023-11-23 07:13:50,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:13:50,544 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 77 [2023-11-23 07:13:50,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:13:50,545 INFO L225 Difference]: With dead ends: 311 [2023-11-23 07:13:50,545 INFO L226 Difference]: Without dead ends: 180 [2023-11-23 07:13:50,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:13:50,547 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 13 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:13:50,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 641 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:13:50,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-23 07:13:50,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 176. [2023-11-23 07:13:50,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 113 states have internal predecessors, (128), 47 states have call successors, (47), 17 states have call predecessors, (47), 18 states have return successors, (59), 45 states have call predecessors, (59), 43 states have call successors, (59) [2023-11-23 07:13:50,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 234 transitions. [2023-11-23 07:13:50,564 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 234 transitions. Word has length 77 [2023-11-23 07:13:50,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:13:50,565 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 234 transitions. [2023-11-23 07:13:50,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 07:13:50,565 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 234 transitions. [2023-11-23 07:13:50,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-23 07:13:50,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:13:50,567 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:13:50,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 07:13:50,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:13:50,784 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:13:50,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:13:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash 803440710, now seen corresponding path program 2 times [2023-11-23 07:13:50,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:13:50,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761375410] [2023-11-23 07:13:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:50,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:13:50,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:52,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:13:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:52,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:13:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:52,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:13:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:13:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 07:13:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:52,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:13:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:52,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:13:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:13:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:52,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:13:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:52,229 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 07:13:52,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:13:52,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761375410] [2023-11-23 07:13:52,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761375410] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:13:52,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175303346] [2023-11-23 07:13:52,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:13:52,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:13:52,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:13:52,266 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:13:52,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 07:13:52,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:13:52,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:13:52,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 2627 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-23 07:13:52,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:13:52,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:13:53,562 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-23 07:13:53,562 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 55 treesize of output 31 [2023-11-23 07:13:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 07:13:53,570 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:13:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-23 07:13:53,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175303346] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:13:53,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:13:53,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 11] total 22 [2023-11-23 07:13:53,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183854221] [2023-11-23 07:13:53,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:13:53,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 07:13:53,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:13:53,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 07:13:53,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2023-11-23 07:13:53,810 INFO L87 Difference]: Start difference. First operand 176 states and 234 transitions. Second operand has 22 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 10 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-23 07:13:56,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:13:56,492 INFO L93 Difference]: Finished difference Result 311 states and 415 transitions. [2023-11-23 07:13:56,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-23 07:13:56,492 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 10 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) Word has length 73 [2023-11-23 07:13:56,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:13:56,494 INFO L225 Difference]: With dead ends: 311 [2023-11-23 07:13:56,494 INFO L226 Difference]: Without dead ends: 192 [2023-11-23 07:13:56,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 142 SyntacticMatches, 14 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=233, Invalid=1573, Unknown=0, NotChecked=0, Total=1806 [2023-11-23 07:13:56,495 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 139 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:13:56,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 831 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1060 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-23 07:13:56,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-23 07:13:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 168. [2023-11-23 07:13:56,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 105 states have (on average 1.1333333333333333) internal successors, (119), 108 states have internal predecessors, (119), 45 states have call successors, (45), 16 states have call predecessors, (45), 17 states have return successors, (54), 43 states have call predecessors, (54), 41 states have call successors, (54) [2023-11-23 07:13:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 218 transitions. [2023-11-23 07:13:56,524 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 218 transitions. Word has length 73 [2023-11-23 07:13:56,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:13:56,525 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 218 transitions. [2023-11-23 07:13:56,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.75) internal successors, (75), 20 states have internal predecessors, (75), 10 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (18), 8 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-23 07:13:56,525 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 218 transitions. [2023-11-23 07:13:56,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 07:13:56,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:13:56,526 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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 07:13:56,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 07:13:56,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:13:56,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:13:56,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:13:56,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1736488211, now seen corresponding path program 1 times [2023-11-23 07:13:56,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:13:56,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294677726] [2023-11-23 07:13:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:56,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:13:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:57,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:13:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:57,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:13:57,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:57,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:13:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:57,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:13:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:57,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 07:13:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:57,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:13:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:57,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:13:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:57,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:13:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:57,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:13:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:57,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:13:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 07:13:57,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:13:57,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294677726] [2023-11-23 07:13:57,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294677726] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:13:57,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:13:57,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 07:13:57,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747578271] [2023-11-23 07:13:57,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:13:57,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:13:57,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:13:57,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:13:57,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:13:57,393 INFO L87 Difference]: Start difference. First operand 168 states and 218 transitions. Second operand has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:13:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:13:58,147 INFO L93 Difference]: Finished difference Result 180 states and 230 transitions. [2023-11-23 07:13:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:13:58,147 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 75 [2023-11-23 07:13:58,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:13:58,149 INFO L225 Difference]: With dead ends: 180 [2023-11-23 07:13:58,149 INFO L226 Difference]: Without dead ends: 178 [2023-11-23 07:13:58,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:13:58,149 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 17 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:13:58,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 589 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:13:58,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-23 07:13:58,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2023-11-23 07:13:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 114 states have internal predecessors, (125), 46 states have call successors, (46), 18 states have call predecessors, (46), 19 states have return successors, (55), 44 states have call predecessors, (55), 42 states have call successors, (55) [2023-11-23 07:13:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 226 transitions. [2023-11-23 07:13:58,166 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 226 transitions. Word has length 75 [2023-11-23 07:13:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:13:58,167 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 226 transitions. [2023-11-23 07:13:58,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:13:58,168 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 226 transitions. [2023-11-23 07:13:58,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-23 07:13:58,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:13:58,168 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:13:58,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 07:13:58,169 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:13:58,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:13:58,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1744332241, now seen corresponding path program 1 times [2023-11-23 07:13:58,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:13:58,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686358839] [2023-11-23 07:13:58,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:58,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:13:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:13:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:59,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:13:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:59,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:13:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:59,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:13:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:59,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:13:59,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:59,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:13:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:13:59,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:59,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:13:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 07:13:59,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:13:59,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686358839] [2023-11-23 07:13:59,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686358839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:13:59,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662178122] [2023-11-23 07:13:59,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:13:59,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:13:59,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:13:59,541 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:13:59,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 07:13:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:13:59,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 2613 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 07:13:59,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:14:00,040 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 07:14:00,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 07:14:00,377 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 07:14:00,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:14:00,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662178122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:00,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:14:00,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2023-11-23 07:14:00,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705889904] [2023-11-23 07:14:00,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:00,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:14:00,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:00,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:14:00,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:14:00,379 INFO L87 Difference]: Start difference. First operand 177 states and 226 transitions. Second operand has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 07:14:01,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:01,825 INFO L93 Difference]: Finished difference Result 498 states and 640 transitions. [2023-11-23 07:14:01,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:14:01,826 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 78 [2023-11-23 07:14:01,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:01,828 INFO L225 Difference]: With dead ends: 498 [2023-11-23 07:14:01,828 INFO L226 Difference]: Without dead ends: 363 [2023-11-23 07:14:01,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2023-11-23 07:14:01,829 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 92 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:01,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 412 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:14:01,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-23 07:14:01,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 347. [2023-11-23 07:14:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 221 states have (on average 1.1312217194570136) internal successors, (250), 228 states have internal predecessors, (250), 88 states have call successors, (88), 34 states have call predecessors, (88), 37 states have return successors, (112), 84 states have call predecessors, (112), 80 states have call successors, (112) [2023-11-23 07:14:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 450 transitions. [2023-11-23 07:14:01,855 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 450 transitions. Word has length 78 [2023-11-23 07:14:01,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:01,855 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 450 transitions. [2023-11-23 07:14:01,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.6) internal successors, (46), 10 states have internal predecessors, (46), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 07:14:01,855 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 450 transitions. [2023-11-23 07:14:01,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-23 07:14:01,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:01,856 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:01,887 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 07:14:02,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:14:02,071 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:02,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:02,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1065059987, now seen corresponding path program 1 times [2023-11-23 07:14:02,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:02,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604088619] [2023-11-23 07:14:02,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:02,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:02,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:02,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:02,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:14:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:02,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:14:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:02,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:14:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:02,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:14:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:02,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:14:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:02,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:14:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 07:14:02,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:02,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604088619] [2023-11-23 07:14:02,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604088619] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:14:02,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382859559] [2023-11-23 07:14:02,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:02,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:14:02,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:14:02,325 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:14:02,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 07:14:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:02,714 INFO L262 TraceCheckSpWp]: Trace formula consists of 2608 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:14:02,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:14:02,722 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 07:14:02,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:14:02,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382859559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:02,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:14:02,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-11-23 07:14:02,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746760219] [2023-11-23 07:14:02,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:02,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:14:02,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:02,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:14:02,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:14:02,725 INFO L87 Difference]: Start difference. First operand 347 states and 450 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:14:03,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:03,009 INFO L93 Difference]: Finished difference Result 567 states and 725 transitions. [2023-11-23 07:14:03,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:14:03,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2023-11-23 07:14:03,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:03,010 INFO L225 Difference]: With dead ends: 567 [2023-11-23 07:14:03,011 INFO L226 Difference]: Without dead ends: 273 [2023-11-23 07:14:03,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:14:03,012 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 6 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:03,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 256 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:14:03,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-23 07:14:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 258. [2023-11-23 07:14:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 168 states have (on average 1.1130952380952381) internal successors, (187), 172 states have internal predecessors, (187), 62 states have call successors, (62), 27 states have call predecessors, (62), 27 states have return successors, (70), 58 states have call predecessors, (70), 56 states have call successors, (70) [2023-11-23 07:14:03,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 319 transitions. [2023-11-23 07:14:03,036 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 319 transitions. Word has length 78 [2023-11-23 07:14:03,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:03,036 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 319 transitions. [2023-11-23 07:14:03,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:14:03,036 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 319 transitions. [2023-11-23 07:14:03,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 07:14:03,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:03,040 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:03,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 07:14:03,252 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,SelfDestructingSolverStorable12 [2023-11-23 07:14:03,253 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:03,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:03,253 INFO L85 PathProgramCache]: Analyzing trace with hash -638121620, now seen corresponding path program 1 times [2023-11-23 07:14:03,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:03,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258707145] [2023-11-23 07:14:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:03,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:14:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:14:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:14:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:14:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:14:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:14:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:14:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:14:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:14:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:14:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:03,910 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 07:14:03,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:03,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258707145] [2023-11-23 07:14:03,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258707145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:03,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:14:03,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 07:14:03,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292782604] [2023-11-23 07:14:03,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:03,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:14:03,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:03,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:14:03,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:14:03,912 INFO L87 Difference]: Start difference. First operand 258 states and 319 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 07:14:05,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:05,691 INFO L93 Difference]: Finished difference Result 276 states and 338 transitions. [2023-11-23 07:14:05,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:14:05,691 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 90 [2023-11-23 07:14:05,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:05,693 INFO L225 Difference]: With dead ends: 276 [2023-11-23 07:14:05,693 INFO L226 Difference]: Without dead ends: 274 [2023-11-23 07:14:05,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:14:05,694 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 50 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:05,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 313 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 07:14:05,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2023-11-23 07:14:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 272. [2023-11-23 07:14:05,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 177 states have (on average 1.1073446327683616) internal successors, (196), 181 states have internal predecessors, (196), 64 states have call successors, (64), 30 states have call predecessors, (64), 30 states have return successors, (72), 60 states have call predecessors, (72), 58 states have call successors, (72) [2023-11-23 07:14:05,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 332 transitions. [2023-11-23 07:14:05,722 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 332 transitions. Word has length 90 [2023-11-23 07:14:05,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:05,722 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 332 transitions. [2023-11-23 07:14:05,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 07:14:05,722 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 332 transitions. [2023-11-23 07:14:05,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 07:14:05,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:05,723 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:05,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 07:14:05,724 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:05,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:05,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1983967111, now seen corresponding path program 1 times [2023-11-23 07:14:05,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:05,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868131278] [2023-11-23 07:14:05,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:05,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:06,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:06,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:14:06,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:06,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:06,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:14:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:06,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:14:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:06,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:14:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:06,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:14:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:06,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:14:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:06,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:14:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 07:14:06,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:06,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868131278] [2023-11-23 07:14:06,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868131278] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:14:06,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90116483] [2023-11-23 07:14:06,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:06,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:14:06,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:14:06,579 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:14:06,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 07:14:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:06,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 2649 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-23 07:14:06,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:14:07,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:14:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 07:14:07,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:14:07,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90116483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:07,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:14:07,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [10] total 23 [2023-11-23 07:14:07,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570013604] [2023-11-23 07:14:07,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:07,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 07:14:07,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 07:14:07,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:14:07,951 INFO L87 Difference]: Start difference. First operand 272 states and 332 transitions. Second operand has 15 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 07:14:10,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:13,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:15,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:17,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:19,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:21,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:23,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:25,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:27,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:27,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:27,858 INFO L93 Difference]: Finished difference Result 453 states and 554 transitions. [2023-11-23 07:14:27,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 07:14:27,858 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 88 [2023-11-23 07:14:27,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:27,860 INFO L225 Difference]: With dead ends: 453 [2023-11-23 07:14:27,860 INFO L226 Difference]: Without dead ends: 367 [2023-11-23 07:14:27,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 84 SyntacticMatches, 10 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=714, Unknown=0, NotChecked=0, Total=812 [2023-11-23 07:14:27,861 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 77 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 26 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:27,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 579 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 555 Invalid, 9 Unknown, 0 Unchecked, 19.7s Time] [2023-11-23 07:14:27,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-23 07:14:27,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 347. [2023-11-23 07:14:27,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 227 states have (on average 1.1145374449339207) internal successors, (253), 235 states have internal predecessors, (253), 78 states have call successors, (78), 38 states have call predecessors, (78), 41 states have return successors, (92), 73 states have call predecessors, (92), 70 states have call successors, (92) [2023-11-23 07:14:27,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 423 transitions. [2023-11-23 07:14:27,893 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 423 transitions. Word has length 88 [2023-11-23 07:14:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:27,893 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 423 transitions. [2023-11-23 07:14:27,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 6 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 07:14:27,894 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 423 transitions. [2023-11-23 07:14:27,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 07:14:27,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:27,895 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:27,910 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-23 07:14:28,108 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,SelfDestructingSolverStorable14 [2023-11-23 07:14:28,108 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:28,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:28,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1609935607, now seen corresponding path program 1 times [2023-11-23 07:14:28,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:28,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258501733] [2023-11-23 07:14:28,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:28,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:28,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:28,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:28,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:28,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:28,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:14:28,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:28,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:14:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:14:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:28,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:14:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:28,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:14:28,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:28,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:14:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:28,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:14:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 07:14:28,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:28,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258501733] [2023-11-23 07:14:28,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258501733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:28,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:14:28,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:14:28,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919812601] [2023-11-23 07:14:28,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:28,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:14:28,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:28,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:14:28,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:14:28,577 INFO L87 Difference]: Start difference. First operand 347 states and 423 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:14:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:29,400 INFO L93 Difference]: Finished difference Result 495 states and 611 transitions. [2023-11-23 07:14:29,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:14:29,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 88 [2023-11-23 07:14:29,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:29,402 INFO L225 Difference]: With dead ends: 495 [2023-11-23 07:14:29,402 INFO L226 Difference]: Without dead ends: 335 [2023-11-23 07:14:29,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:14:29,403 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 42 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:29,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 159 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 07:14:29,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2023-11-23 07:14:29,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 335. [2023-11-23 07:14:29,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 216 states have (on average 1.1018518518518519) internal successors, (238), 223 states have internal predecessors, (238), 78 states have call successors, (78), 38 states have call predecessors, (78), 40 states have return successors, (88), 73 states have call predecessors, (88), 70 states have call successors, (88) [2023-11-23 07:14:29,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 404 transitions. [2023-11-23 07:14:29,436 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 404 transitions. Word has length 88 [2023-11-23 07:14:29,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:29,436 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 404 transitions. [2023-11-23 07:14:29,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:14:29,437 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 404 transitions. [2023-11-23 07:14:29,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 07:14:29,439 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:29,439 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:29,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 07:14:29,439 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:29,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:29,440 INFO L85 PathProgramCache]: Analyzing trace with hash -812702688, now seen corresponding path program 1 times [2023-11-23 07:14:29,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:29,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791358719] [2023-11-23 07:14:29,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:29,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:30,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:30,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:14:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:30,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:30,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:30,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:14:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:30,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:14:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:30,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:14:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:14:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:14:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:30,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:14:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 07:14:30,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:30,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791358719] [2023-11-23 07:14:30,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791358719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:30,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:14:30,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 07:14:30,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233522539] [2023-11-23 07:14:30,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:30,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 07:14:30,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:30,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 07:14:30,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:14:30,515 INFO L87 Difference]: Start difference. First operand 335 states and 404 transitions. Second operand has 14 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:14:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:32,327 INFO L93 Difference]: Finished difference Result 355 states and 427 transitions. [2023-11-23 07:14:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 07:14:32,327 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 90 [2023-11-23 07:14:32,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:32,329 INFO L225 Difference]: With dead ends: 355 [2023-11-23 07:14:32,329 INFO L226 Difference]: Without dead ends: 353 [2023-11-23 07:14:32,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:14:32,331 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 74 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:32,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 507 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 07:14:32,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-23 07:14:32,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 338. [2023-11-23 07:14:32,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 219 states have (on average 1.1004566210045663) internal successors, (241), 227 states have internal predecessors, (241), 77 states have call successors, (77), 38 states have call predecessors, (77), 41 states have return successors, (91), 72 states have call predecessors, (91), 69 states have call successors, (91) [2023-11-23 07:14:32,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 409 transitions. [2023-11-23 07:14:32,361 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 409 transitions. Word has length 90 [2023-11-23 07:14:32,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:32,362 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 409 transitions. [2023-11-23 07:14:32,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:14:32,363 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 409 transitions. [2023-11-23 07:14:32,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 07:14:32,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:32,364 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:32,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 07:14:32,364 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:32,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:32,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1626970354, now seen corresponding path program 1 times [2023-11-23 07:14:32,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:32,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576588227] [2023-11-23 07:14:32,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:32,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:34,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:34,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:14:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:34,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:14:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:34,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:14:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:34,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:14:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:34,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:14:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:34,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:14:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:34,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 07:14:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:34,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:14:34,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 07:14:34,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576588227] [2023-11-23 07:14:34,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576588227] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:14:34,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975474673] [2023-11-23 07:14:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:34,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:14:34,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:14:34,826 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:14:34,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 07:14:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:35,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 2707 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-23 07:14:35,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:14:35,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:14:35,841 INFO L349 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2023-11-23 07:14:35,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 49 [2023-11-23 07:14:35,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-23 07:14:35,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2023-11-23 07:14:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 37 proven. 11 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 07:14:36,069 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:14:38,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975474673] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:14:38,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:14:38,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 17] total 31 [2023-11-23 07:14:38,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758520764] [2023-11-23 07:14:38,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:14:38,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 07:14:38,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:38,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 07:14:38,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1201, Unknown=1, NotChecked=0, Total=1332 [2023-11-23 07:14:38,291 INFO L87 Difference]: Start difference. First operand 338 states and 409 transitions. Second operand has 31 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 27 states have internal predecessors, (93), 10 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (19), 10 states have call predecessors, (19), 8 states have call successors, (19) [2023-11-23 07:14:41,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:44,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:46,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:48,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:50,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:53,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:55,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:57,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:14:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:14:58,342 INFO L93 Difference]: Finished difference Result 511 states and 603 transitions. [2023-11-23 07:14:58,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-23 07:14:58,342 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 27 states have internal predecessors, (93), 10 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (19), 10 states have call predecessors, (19), 8 states have call successors, (19) Word has length 95 [2023-11-23 07:14:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:14:58,344 INFO L225 Difference]: With dead ends: 511 [2023-11-23 07:14:58,344 INFO L226 Difference]: Without dead ends: 381 [2023-11-23 07:14:58,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 122 SyntacticMatches, 12 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=497, Invalid=3924, Unknown=1, NotChecked=0, Total=4422 [2023-11-23 07:14:58,346 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 212 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 71 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:14:58,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 781 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 2297 Invalid, 8 Unknown, 0 Unchecked, 19.3s Time] [2023-11-23 07:14:58,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-23 07:14:58,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 361. [2023-11-23 07:14:58,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 241 states have (on average 1.103734439834025) internal successors, (266), 248 states have internal predecessors, (266), 76 states have call successors, (76), 41 states have call predecessors, (76), 43 states have return successors, (85), 71 states have call predecessors, (85), 68 states have call successors, (85) [2023-11-23 07:14:58,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 427 transitions. [2023-11-23 07:14:58,380 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 427 transitions. Word has length 95 [2023-11-23 07:14:58,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:14:58,381 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 427 transitions. [2023-11-23 07:14:58,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 27 states have (on average 3.4444444444444446) internal successors, (93), 27 states have internal predecessors, (93), 10 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (19), 10 states have call predecessors, (19), 8 states have call successors, (19) [2023-11-23 07:14:58,381 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 427 transitions. [2023-11-23 07:14:58,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 07:14:58,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:14:58,388 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:14:58,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 07:14:58,588 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 07:14:58,589 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:14:58,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:14:58,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1727610949, now seen corresponding path program 1 times [2023-11-23 07:14:58,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:14:58,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877289503] [2023-11-23 07:14:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:14:58,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:14:58,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:14:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:14:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:14:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:14:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:14:59,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:14:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:14:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:14:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:14:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:14:59,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:14:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:14:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:14:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 07:14:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:14:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 07:14:59,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:14:59,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877289503] [2023-11-23 07:14:59,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877289503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:14:59,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:14:59,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 07:14:59,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172256034] [2023-11-23 07:14:59,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:14:59,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:14:59,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:14:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:14:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:14:59,354 INFO L87 Difference]: Start difference. First operand 361 states and 427 transitions. Second operand has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 07:15:01,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:01,133 INFO L93 Difference]: Finished difference Result 378 states and 445 transitions. [2023-11-23 07:15:01,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:15:01,134 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 103 [2023-11-23 07:15:01,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:01,136 INFO L225 Difference]: With dead ends: 378 [2023-11-23 07:15:01,136 INFO L226 Difference]: Without dead ends: 376 [2023-11-23 07:15:01,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:15:01,137 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 48 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:01,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 326 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 07:15:01,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-11-23 07:15:01,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2023-11-23 07:15:01,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 249 states have (on average 1.1004016064257027) internal successors, (274), 257 states have internal predecessors, (274), 78 states have call successors, (78), 43 states have call predecessors, (78), 46 states have return successors, (88), 73 states have call predecessors, (88), 70 states have call successors, (88) [2023-11-23 07:15:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 440 transitions. [2023-11-23 07:15:01,172 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 440 transitions. Word has length 103 [2023-11-23 07:15:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:01,174 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 440 transitions. [2023-11-23 07:15:01,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 07:15:01,174 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 440 transitions. [2023-11-23 07:15:01,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-23 07:15:01,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:01,176 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:01,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 07:15:01,176 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:01,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:01,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1914968186, now seen corresponding path program 1 times [2023-11-23 07:15:01,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:01,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304563989] [2023-11-23 07:15:01,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:01,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:01,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:01,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:15:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:15:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:15:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:15:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:15:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:15:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:15:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:15:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:01,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:15:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:02,087 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 07:15:02,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:02,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304563989] [2023-11-23 07:15:02,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304563989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:02,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:15:02,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 07:15:02,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228553961] [2023-11-23 07:15:02,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:02,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 07:15:02,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:02,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 07:15:02,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:15:02,089 INFO L87 Difference]: Start difference. First operand 374 states and 440 transitions. Second operand has 14 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 07:15:03,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:03,416 INFO L93 Difference]: Finished difference Result 388 states and 453 transitions. [2023-11-23 07:15:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 07:15:03,416 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2023-11-23 07:15:03,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:03,418 INFO L225 Difference]: With dead ends: 388 [2023-11-23 07:15:03,418 INFO L226 Difference]: Without dead ends: 386 [2023-11-23 07:15:03,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:15:03,419 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 79 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:03,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 508 Invalid, 697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 07:15:03,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-23 07:15:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 372. [2023-11-23 07:15:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 249 states have (on average 1.1004016064257027) internal successors, (274), 257 states have internal predecessors, (274), 76 states have call successors, (76), 43 states have call predecessors, (76), 46 states have return successors, (86), 71 states have call predecessors, (86), 68 states have call successors, (86) [2023-11-23 07:15:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 436 transitions. [2023-11-23 07:15:03,467 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 436 transitions. Word has length 103 [2023-11-23 07:15:03,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:03,467 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 436 transitions. [2023-11-23 07:15:03,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 11 states have internal predecessors, (47), 2 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 07:15:03,467 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 436 transitions. [2023-11-23 07:15:03,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 07:15:03,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:03,469 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:03,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 07:15:03,469 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:03,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:03,469 INFO L85 PathProgramCache]: Analyzing trace with hash -130091779, now seen corresponding path program 1 times [2023-11-23 07:15:03,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:03,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222235472] [2023-11-23 07:15:03,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:03,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:15:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:15:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:15:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:15:04,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:15:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:15:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:15:04,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:15:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:15:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 07:15:04,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 26 proven. 24 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-23 07:15:04,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:04,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222235472] [2023-11-23 07:15:04,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222235472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:15:04,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040505967] [2023-11-23 07:15:04,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:04,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:15:04,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:15:04,918 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:15:04,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 07:15:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:05,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-23 07:15:05,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:15:05,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:15:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 63 proven. 31 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 07:15:06,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:15:06,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040505967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:15:06,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:15:06,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 20 [2023-11-23 07:15:06,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790177715] [2023-11-23 07:15:06,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:15:06,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 07:15:06,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:06,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 07:15:06,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:15:06,237 INFO L87 Difference]: Start difference. First operand 372 states and 436 transitions. Second operand has 20 states, 20 states have (on average 3.85) internal successors, (77), 19 states have internal predecessors, (77), 7 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-23 07:15:11,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:11,495 INFO L93 Difference]: Finished difference Result 447 states and 510 transitions. [2023-11-23 07:15:11,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 07:15:11,496 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 19 states have internal predecessors, (77), 7 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) Word has length 107 [2023-11-23 07:15:11,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:11,499 INFO L225 Difference]: With dead ends: 447 [2023-11-23 07:15:11,500 INFO L226 Difference]: Without dead ends: 397 [2023-11-23 07:15:11,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 150 SyntacticMatches, 10 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=252, Invalid=1080, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 07:15:11,501 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 113 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:11,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 312 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-23 07:15:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-23 07:15:11,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 379. [2023-11-23 07:15:11,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 254 states have (on average 1.0826771653543308) internal successors, (275), 261 states have internal predecessors, (275), 76 states have call successors, (76), 46 states have call predecessors, (76), 48 states have return successors, (85), 71 states have call predecessors, (85), 68 states have call successors, (85) [2023-11-23 07:15:11,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 436 transitions. [2023-11-23 07:15:11,541 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 436 transitions. Word has length 107 [2023-11-23 07:15:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:11,541 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 436 transitions. [2023-11-23 07:15:11,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.85) internal successors, (77), 19 states have internal predecessors, (77), 7 states have call successors, (24), 5 states have call predecessors, (24), 6 states have return successors, (23), 7 states have call predecessors, (23), 6 states have call successors, (23) [2023-11-23 07:15:11,541 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 436 transitions. [2023-11-23 07:15:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 07:15:11,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:11,544 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:11,560 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 07:15:11,745 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,SelfDestructingSolverStorable20 [2023-11-23 07:15:11,746 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:11,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:11,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1793904146, now seen corresponding path program 1 times [2023-11-23 07:15:11,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:11,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748530260] [2023-11-23 07:15:11,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:11,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:15:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:15:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:15:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:15:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:15:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:15:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:15:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:15:13,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:15:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:15:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 07:15:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 07:15:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:15:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:13,372 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-23 07:15:13,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:13,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748530260] [2023-11-23 07:15:13,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748530260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:13,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:15:13,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 07:15:13,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543839207] [2023-11-23 07:15:13,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:13,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:15:13,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:13,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:15:13,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:15:13,375 INFO L87 Difference]: Start difference. First operand 379 states and 436 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 07:15:15,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:15,065 INFO L93 Difference]: Finished difference Result 426 states and 502 transitions. [2023-11-23 07:15:15,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:15:15,066 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 113 [2023-11-23 07:15:15,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:15,067 INFO L225 Difference]: With dead ends: 426 [2023-11-23 07:15:15,067 INFO L226 Difference]: Without dead ends: 285 [2023-11-23 07:15:15,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:15:15,068 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 40 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:15,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 197 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:15:15,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-23 07:15:15,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2023-11-23 07:15:15,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 188 states have (on average 1.1063829787234043) internal successors, (208), 195 states have internal predecessors, (208), 62 states have call successors, (62), 32 states have call predecessors, (62), 34 states have return successors, (74), 57 states have call predecessors, (74), 52 states have call successors, (74) [2023-11-23 07:15:15,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 344 transitions. [2023-11-23 07:15:15,102 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 344 transitions. Word has length 113 [2023-11-23 07:15:15,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:15,103 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 344 transitions. [2023-11-23 07:15:15,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 8 states have internal predecessors, (36), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 07:15:15,103 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 344 transitions. [2023-11-23 07:15:15,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 07:15:15,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:15,106 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:15,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 07:15:15,107 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:15,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:15,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1882641316, now seen corresponding path program 1 times [2023-11-23 07:15:15,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:15,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925547454] [2023-11-23 07:15:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:15,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:15:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:15:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:15:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:15:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:15:15,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:15:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:15:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:15:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:15:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:15:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:15,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:15:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 07:15:16,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:16,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925547454] [2023-11-23 07:15:16,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925547454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:16,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:15:16,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-23 07:15:16,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913434736] [2023-11-23 07:15:16,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:16,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 07:15:16,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:16,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 07:15:16,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:15:16,162 INFO L87 Difference]: Start difference. First operand 285 states and 344 transitions. Second operand has 15 states, 13 states have (on average 3.769230769230769) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 07:15:19,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:19,594 INFO L93 Difference]: Finished difference Result 299 states and 357 transitions. [2023-11-23 07:15:19,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 07:15:19,595 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 3.769230769230769) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-11-23 07:15:19,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:19,597 INFO L225 Difference]: With dead ends: 299 [2023-11-23 07:15:19,597 INFO L226 Difference]: Without dead ends: 297 [2023-11-23 07:15:19,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2023-11-23 07:15:19,597 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 70 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:19,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 508 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 07:15:19,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-23 07:15:19,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 257. [2023-11-23 07:15:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 174 states have (on average 1.103448275862069) internal successors, (192), 181 states have internal predecessors, (192), 50 states have call successors, (50), 28 states have call predecessors, (50), 32 states have return successors, (67), 47 states have call predecessors, (67), 45 states have call successors, (67) [2023-11-23 07:15:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 309 transitions. [2023-11-23 07:15:19,655 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 309 transitions. Word has length 112 [2023-11-23 07:15:19,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:19,655 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 309 transitions. [2023-11-23 07:15:19,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 3.769230769230769) internal successors, (49), 11 states have internal predecessors, (49), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 07:15:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 309 transitions. [2023-11-23 07:15:19,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 07:15:19,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:19,657 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:19,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 07:15:19,657 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:19,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:19,658 INFO L85 PathProgramCache]: Analyzing trace with hash 29091574, now seen corresponding path program 1 times [2023-11-23 07:15:19,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:19,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458225697] [2023-11-23 07:15:19,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:19,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:20,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:20,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:20,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:20,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:15:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:20,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:15:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:20,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:15:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:20,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:15:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:21,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:21,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:15:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:21,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:15:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:21,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 07:15:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:15:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:21,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:15:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:21,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:15:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:21,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:15:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:21,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 07:15:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:21,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 07:15:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:21,084 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 6 proven. 29 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 07:15:21,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:21,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458225697] [2023-11-23 07:15:21,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458225697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:15:21,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300416735] [2023-11-23 07:15:21,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:21,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:15:21,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:15:21,086 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:15:21,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 07:15:21,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:21,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-23 07:15:21,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:15:21,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:15:22,199 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 72 proven. 26 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-23 07:15:22,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:15:22,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300416735] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:15:22,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:15:22,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 27 [2023-11-23 07:15:22,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262696726] [2023-11-23 07:15:22,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:15:22,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 07:15:22,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:22,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 07:15:22,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2023-11-23 07:15:22,412 INFO L87 Difference]: Start difference. First operand 257 states and 309 transitions. Second operand has 27 states, 24 states have (on average 4.041666666666667) internal successors, (97), 24 states have internal predecessors, (97), 10 states have call successors, (33), 6 states have call predecessors, (33), 7 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-23 07:15:24,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:15:27,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:15:31,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:15:34,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:15:36,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:15:38,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:15:40,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:15:40,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:40,954 INFO L93 Difference]: Finished difference Result 384 states and 456 transitions. [2023-11-23 07:15:40,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-23 07:15:40,954 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 4.041666666666667) internal successors, (97), 24 states have internal predecessors, (97), 10 states have call successors, (33), 6 states have call predecessors, (33), 7 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) Word has length 123 [2023-11-23 07:15:40,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:40,964 INFO L225 Difference]: With dead ends: 384 [2023-11-23 07:15:40,980 INFO L226 Difference]: Without dead ends: 219 [2023-11-23 07:15:40,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 167 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 669 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=351, Invalid=2405, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 07:15:40,985 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 276 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 178 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:40,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 271 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 1272 Invalid, 7 Unknown, 0 Unchecked, 16.4s Time] [2023-11-23 07:15:40,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-23 07:15:41,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 188. [2023-11-23 07:15:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 125 states have (on average 1.104) internal successors, (138), 130 states have internal predecessors, (138), 38 states have call successors, (38), 23 states have call predecessors, (38), 24 states have return successors, (45), 34 states have call predecessors, (45), 33 states have call successors, (45) [2023-11-23 07:15:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 221 transitions. [2023-11-23 07:15:41,033 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 221 transitions. Word has length 123 [2023-11-23 07:15:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:41,033 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 221 transitions. [2023-11-23 07:15:41,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 4.041666666666667) internal successors, (97), 24 states have internal predecessors, (97), 10 states have call successors, (33), 6 states have call predecessors, (33), 7 states have return successors, (32), 9 states have call predecessors, (32), 10 states have call successors, (32) [2023-11-23 07:15:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 221 transitions. [2023-11-23 07:15:41,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 07:15:41,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:41,036 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:41,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 07:15:41,236 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,SelfDestructingSolverStorable23 [2023-11-23 07:15:41,236 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:41,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:41,236 INFO L85 PathProgramCache]: Analyzing trace with hash -736085047, now seen corresponding path program 1 times [2023-11-23 07:15:41,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:41,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936811379] [2023-11-23 07:15:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:41,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:41,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:41,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:41,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:15:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:41,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:41,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:15:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:15:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:15:42,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:15:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:15:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:15:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:15:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:15:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:15:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:15:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:15:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 07:15:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 07:15:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 07:15:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-11-23 07:15:42,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:42,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936811379] [2023-11-23 07:15:42,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936811379] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:15:42,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:15:42,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-23 07:15:42,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327834293] [2023-11-23 07:15:42,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:15:42,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 07:15:42,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:42,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 07:15:42,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:15:42,309 INFO L87 Difference]: Start difference. First operand 188 states and 221 transitions. Second operand has 15 states, 13 states have (on average 4.076923076923077) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 07:15:45,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:15:45,449 INFO L93 Difference]: Finished difference Result 196 states and 229 transitions. [2023-11-23 07:15:45,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 07:15:45,450 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.076923076923077) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 141 [2023-11-23 07:15:45,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:15:45,452 INFO L225 Difference]: With dead ends: 196 [2023-11-23 07:15:45,453 INFO L226 Difference]: Without dead ends: 188 [2023-11-23 07:15:45,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=138, Invalid=564, Unknown=0, NotChecked=0, Total=702 [2023-11-23 07:15:45,454 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 74 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:15:45,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 475 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 07:15:45,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-23 07:15:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2023-11-23 07:15:45,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 126 states have (on average 1.1031746031746033) internal successors, (139), 131 states have internal predecessors, (139), 35 states have call successors, (35), 24 states have call predecessors, (35), 25 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2023-11-23 07:15:45,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 215 transitions. [2023-11-23 07:15:45,483 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 215 transitions. Word has length 141 [2023-11-23 07:15:45,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:15:45,483 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 215 transitions. [2023-11-23 07:15:45,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.076923076923077) internal successors, (53), 11 states have internal predecessors, (53), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-23 07:15:45,484 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 215 transitions. [2023-11-23 07:15:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 07:15:45,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:15:45,485 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:15:45,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-23 07:15:45,485 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:15:45,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:15:45,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1371055091, now seen corresponding path program 1 times [2023-11-23 07:15:45,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:15:45,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213291835] [2023-11-23 07:15:45,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:45,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:15:45,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:15:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:15:46,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:15:46,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:15:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:15:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:15:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:15:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:15:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:15:46,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:15:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:15:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:15:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:15:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:15:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 07:15:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:15:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 07:15:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 54 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-11-23 07:15:46,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:15:46,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213291835] [2023-11-23 07:15:46,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213291835] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:15:46,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312876691] [2023-11-23 07:15:46,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:15:46,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:15:46,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:15:46,716 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:15:46,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 07:15:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:15:47,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 2871 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-23 07:15:47,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:15:47,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:15:50,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2023-11-23 07:15:50,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2023-11-23 07:15:50,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2023-11-23 07:15:50,030 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_byte_cursor_left_trim_pred_~#trimmed~1.base| Int)) (= |c_#memory_$Pointer$#5.base| (store |c_old(#memory_$Pointer$#5.base)| |aws_byte_cursor_left_trim_pred_~#trimmed~1.base| (let ((.cse0 (select |c_old(#memory_$Pointer$#5.base)| |aws_byte_cursor_left_trim_pred_~#trimmed~1.base|))) (store (store .cse0 0 (select (select |c_#memory_$Pointer$#5.base| |aws_byte_cursor_left_trim_pred_~#trimmed~1.base|) 0)) 8 (select .cse0 8)))))) is different from true [2023-11-23 07:15:50,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2023-11-23 07:15:50,058 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-23 07:15:50,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 19 [2023-11-23 07:15:50,379 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 80 proven. 51 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2023-11-23 07:15:50,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:15:52,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312876691] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:15:52,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:15:52,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20] total 29 [2023-11-23 07:15:52,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931717277] [2023-11-23 07:15:52,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:15:52,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 07:15:52,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:15:52,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 07:15:52,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1009, Unknown=3, NotChecked=64, Total=1190 [2023-11-23 07:15:52,725 INFO L87 Difference]: Start difference. First operand 187 states and 215 transitions. Second operand has 29 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 13 states have call successors, (38), 6 states have call predecessors, (38), 7 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) [2023-11-23 07:15:55,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:15:59,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:05,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:08,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:10,743 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((|aws_byte_cursor_left_trim_pred_~#trimmed~1.base| Int)) (= |c_#memory_$Pointer$#5.base| (store |c_old(#memory_$Pointer$#5.base)| |aws_byte_cursor_left_trim_pred_~#trimmed~1.base| (let ((.cse0 (select |c_old(#memory_$Pointer$#5.base)| |aws_byte_cursor_left_trim_pred_~#trimmed~1.base|))) (store (store .cse0 0 (select (select |c_#memory_$Pointer$#5.base| |aws_byte_cursor_left_trim_pred_~#trimmed~1.base|) 0)) 8 (select .cse0 8)))))) (exists ((|v_ULTIMATE.start_aws_byte_cursor_satisfies_pred_harness_~#cur~3#1.base_BEFORE_CALL_50| Int)) (not (= (select (select |c_#memory_$Pointer$#5.base| |v_ULTIMATE.start_aws_byte_cursor_satisfies_pred_harness_~#cur~3#1.base_BEFORE_CALL_50|) 8) 0)))) is different from true [2023-11-23 07:16:12,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:15,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:18,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:16:18,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:16:18,477 INFO L93 Difference]: Finished difference Result 335 states and 388 transitions. [2023-11-23 07:16:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-23 07:16:18,477 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 13 states have call successors, (38), 6 states have call predecessors, (38), 7 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) Word has length 142 [2023-11-23 07:16:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:16:18,487 INFO L225 Difference]: With dead ends: 335 [2023-11-23 07:16:18,487 INFO L226 Difference]: Without dead ends: 289 [2023-11-23 07:16:18,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 178 SyntacticMatches, 13 SemanticMatches, 64 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=524, Invalid=3511, Unknown=5, NotChecked=250, Total=4290 [2023-11-23 07:16:18,492 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 356 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 250 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 231 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:16:18,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 437 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1716 Invalid, 7 Unknown, 231 Unchecked, 17.9s Time] [2023-11-23 07:16:18,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-23 07:16:18,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 258. [2023-11-23 07:16:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 175 states have (on average 1.1028571428571428) internal successors, (193), 179 states have internal predecessors, (193), 49 states have call successors, (49), 33 states have call predecessors, (49), 33 states have return successors, (61), 45 states have call predecessors, (61), 45 states have call successors, (61) [2023-11-23 07:16:18,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 303 transitions. [2023-11-23 07:16:18,570 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 303 transitions. Word has length 142 [2023-11-23 07:16:18,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:16:18,570 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 303 transitions. [2023-11-23 07:16:18,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.538461538461538) internal successors, (118), 26 states have internal predecessors, (118), 13 states have call successors, (38), 6 states have call predecessors, (38), 7 states have return successors, (37), 12 states have call predecessors, (37), 12 states have call successors, (37) [2023-11-23 07:16:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 303 transitions. [2023-11-23 07:16:18,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-23 07:16:18,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:16:18,571 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:16:18,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 07:16:18,789 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 07:16:18,789 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:16:18,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:16:18,790 INFO L85 PathProgramCache]: Analyzing trace with hash 480675873, now seen corresponding path program 1 times [2023-11-23 07:16:18,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:16:18,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902082097] [2023-11-23 07:16:18,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:18,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:16:19,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:16:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:19,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:16:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:19,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:16:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:16:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:16:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:19,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:16:19,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:19,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:16:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:16:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:16:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:16:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:16:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:16:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:16:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:16:20,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 07:16:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 07:16:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 07:16:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 07:16:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,153 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 24 proven. 34 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 07:16:20,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:16:20,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902082097] [2023-11-23 07:16:20,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902082097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:20,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167300881] [2023-11-23 07:16:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:16:20,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:16:20,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:16:20,193 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:16:20,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 07:16:20,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:16:20,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 140 conjunts are in the unsatisfiable core [2023-11-23 07:16:20,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:16:20,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 07:16:20,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:16:21,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:16:21,301 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 81 treesize of output 57 [2023-11-23 07:16:22,844 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 73 treesize of output 61 [2023-11-23 07:16:23,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:16:23,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 63 [2023-11-23 07:16:23,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:16:23,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 42 [2023-11-23 07:16:23,131 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 66 proven. 75 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-23 07:16:23,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:16:35,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167300881] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:16:35,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:16:35,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 30] total 38 [2023-11-23 07:16:35,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855048638] [2023-11-23 07:16:35,730 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:16:35,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-23 07:16:35,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:16:35,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-23 07:16:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1843, Unknown=5, NotChecked=0, Total=1980 [2023-11-23 07:16:35,732 INFO L87 Difference]: Start difference. First operand 258 states and 303 transitions. Second operand has 38 states, 32 states have (on average 3.9375) internal successors, (126), 32 states have internal predecessors, (126), 14 states have call successors, (43), 9 states have call predecessors, (43), 10 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2023-11-23 07:17:15,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:15,825 INFO L93 Difference]: Finished difference Result 407 states and 477 transitions. [2023-11-23 07:17:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-23 07:17:15,826 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 32 states have (on average 3.9375) internal successors, (126), 32 states have internal predecessors, (126), 14 states have call successors, (43), 9 states have call predecessors, (43), 10 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) Word has length 145 [2023-11-23 07:17:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:15,827 INFO L225 Difference]: With dead ends: 407 [2023-11-23 07:17:15,827 INFO L226 Difference]: Without dead ends: 254 [2023-11-23 07:17:15,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 180 SyntacticMatches, 15 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2336 ImplicationChecksByTransitivity, 37.0s TimeCoverageRelationStatistics Valid=805, Invalid=7746, Unknown=5, NotChecked=0, Total=8556 [2023-11-23 07:17:15,830 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 256 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 3406 mSolverCounterSat, 148 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 3570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 3406 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:15,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 881 Invalid, 3570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [148 Valid, 3406 Invalid, 16 Unknown, 0 Unchecked, 15.8s Time] [2023-11-23 07:17:15,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-23 07:17:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 234. [2023-11-23 07:17:15,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 162 states have (on average 1.0925925925925926) internal successors, (177), 165 states have internal predecessors, (177), 43 states have call successors, (43), 30 states have call predecessors, (43), 28 states have return successors, (50), 38 states have call predecessors, (50), 39 states have call successors, (50) [2023-11-23 07:17:15,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 270 transitions. [2023-11-23 07:17:15,860 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 270 transitions. Word has length 145 [2023-11-23 07:17:15,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:15,860 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 270 transitions. [2023-11-23 07:17:15,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 32 states have (on average 3.9375) internal successors, (126), 32 states have internal predecessors, (126), 14 states have call successors, (43), 9 states have call predecessors, (43), 10 states have return successors, (39), 12 states have call predecessors, (39), 12 states have call successors, (39) [2023-11-23 07:17:15,860 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 270 transitions. [2023-11-23 07:17:15,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 07:17:15,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:15,861 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:15,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 07:17:16,077 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 07:17:16,077 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:16,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:16,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1873367473, now seen corresponding path program 1 times [2023-11-23 07:17:16,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:16,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842812372] [2023-11-23 07:17:16,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:16,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:16,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:16,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:17:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:16,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:17:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:16,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:16,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:17:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:16,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:17:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:17:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 07:17:17,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 07:17:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:17:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-23 07:17:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:17:17,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:17:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:17:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 07:17:17,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 07:17:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:17:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 07:17:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:17,705 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-23 07:17:17,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:17,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842812372] [2023-11-23 07:17:17,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842812372] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:17,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551494979] [2023-11-23 07:17:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:17,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:17,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:17,716 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:17:17,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 07:17:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:18,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 2856 conjuncts, 109 conjunts are in the unsatisfiable core [2023-11-23 07:17:18,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:18,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:17:18,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:17:21,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2023-11-23 07:17:21,706 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 24 treesize of output 9 [2023-11-23 07:17:22,184 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 24 treesize of output 9 [2023-11-23 07:17:22,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2023-11-23 07:17:22,650 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 24 treesize of output 9 [2023-11-23 07:17:22,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2023-11-23 07:17:34,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2023-11-23 07:17:35,007 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 24 treesize of output 9 [2023-11-23 07:17:35,519 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-23 07:17:35,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 34 treesize of output 26 [2023-11-23 07:17:35,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 Killed by 15