./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_string_compare_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_string_compare_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 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:45:01,016 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:45:01,087 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:45:01,092 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:45:01,092 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:45:01,115 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:45:01,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:45:01,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:45:01,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:45:01,120 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:45:01,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:45:01,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:45:01,121 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:45:01,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:45:01,123 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:45:01,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:45:01,123 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:45:01,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:45:01,124 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:45:01,124 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:45:01,124 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:45:01,125 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:45:01,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:45:01,125 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:45:01,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:45:01,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:45:01,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:45:01,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:45:01,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:45:01,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:45:01,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:45:01,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:45:01,128 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:45:01,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:45:01,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:45:01,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:45:01,129 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:45:01,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:45:01,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:45:01,129 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66fb9bfec5c458b51d86deb6748dd65f162e7ac6a772af5f3fec59d101a18d8d Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:45:01,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:45:01,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:45:01,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:45:01,397 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:45:01,397 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:45:01,398 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_string_compare_harness.i [2023-11-23 07:45:02,500 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:45:02,912 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:45:02,913 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_compare_harness.i [2023-11-23 07:45:02,946 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d264ec035/a150932f58ca47b883cf4b13af1c2b1d/FLAG1f5f73d9c [2023-11-23 07:45:03,071 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d264ec035/a150932f58ca47b883cf4b13af1c2b1d [2023-11-23 07:45:03,073 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:45:03,074 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:45:03,074 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:45:03,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:45:03,078 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:45:03,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:45:03" (1/1) ... [2023-11-23 07:45:03,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1678ef85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:03, skipping insertion in model container [2023-11-23 07:45:03,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:45:03" (1/1) ... [2023-11-23 07:45:03,170 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:45:03,364 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_compare_harness.i[4492,4505] [2023-11-23 07:45:03,371 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_compare_harness.i[4552,4565] [2023-11-23 07:45:03,963 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:03,964 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:03,965 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:03,967 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:03,967 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:03,981 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:03,982 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:03,984 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:03,984 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,245 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:45:04,246 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:45:04,247 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:45:04,247 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:45:04,248 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:45:04,249 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:45:04,249 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:45:04,250 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:45:04,250 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:45:04,251 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:45:04,425 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,426 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:45:04,574 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:45:04,587 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_compare_harness.i[4492,4505] [2023-11-23 07:45:04,587 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_compare_harness.i[4552,4565] [2023-11-23 07:45:04,610 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,610 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,611 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,611 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,611 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,614 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,615 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,615 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,615 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,653 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:45:04,654 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:45:04,654 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:45:04,655 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:45:04,655 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:45:04,655 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:45:04,656 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:45:04,656 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:45:04,656 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:45:04,656 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:45:04,727 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2023-11-23 07:45:04,729 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,729 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:45:04,740 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2023-11-23 07:45:04,769 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:45:04,975 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,975 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,976 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,976 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,976 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,976 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,976 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,976 WARN L675 CHandler]: The function s_global_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,977 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,977 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,977 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,977 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,977 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,978 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,978 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,978 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,978 WARN L675 CHandler]: The function tl_thread_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,978 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,979 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,979 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:45:04,985 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:45:04,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04 WrapperNode [2023-11-23 07:45:04,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:45:04,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:45:04,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:45:04,987 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:45:04,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (1/1) ... [2023-11-23 07:45:05,109 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (1/1) ... [2023-11-23 07:45:05,174 INFO L138 Inliner]: procedures = 692, calls = 2785, calls flagged for inlining = 57, calls inlined = 5, statements flattened = 812 [2023-11-23 07:45:05,174 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:45:05,175 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:45:05,175 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:45:05,175 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:45:05,184 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (1/1) ... [2023-11-23 07:45:05,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (1/1) ... [2023-11-23 07:45:05,193 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (1/1) ... [2023-11-23 07:45:05,252 INFO L188 MemorySlicer]: Split 515 memory accesses to 7 slices as follows [2, 256, 11, 236, 2, 3, 5]. 50 percent of accesses are in the largest equivalence class. The 502 initializations are split as follows [2, 256, 0, 236, 0, 3, 5]. The 5 writes are split as follows [0, 0, 3, 0, 2, 0, 0]. [2023-11-23 07:45:05,253 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (1/1) ... [2023-11-23 07:45:05,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (1/1) ... [2023-11-23 07:45:05,372 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (1/1) ... [2023-11-23 07:45:05,384 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (1/1) ... [2023-11-23 07:45:05,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (1/1) ... [2023-11-23 07:45:05,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (1/1) ... [2023-11-23 07:45:05,412 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:45:05,415 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:45:05,416 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:45:05,416 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:45:05,416 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (1/1) ... [2023-11-23 07:45:05,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:45:05,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:45:05,464 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 07:45:05,490 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 07:45:05,541 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-23 07:45:05,541 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-23 07:45:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_compare [2023-11-23 07:45:05,542 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_compare [2023-11-23 07:45:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-23 07:45:05,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-23 07:45:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-23 07:45:05,542 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:45:05,542 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:45:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:45:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:45:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:45:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:45:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:45:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:45:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 07:45:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:45:05,543 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:45:05,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:45:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:45:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:45:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:45:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:45:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:45:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:45:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:45:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:45:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:45:05,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:45:05,544 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:45:05,544 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:45:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-23 07:45:05,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-23 07:45:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-23 07:45:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-23 07:45:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-23 07:45:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-23 07:45:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-23 07:45:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2023-11-23 07:45:05,549 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2023-11-23 07:45:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:45:05,549 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:45:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:45:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:45:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:45:05,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:45:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:45:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:45:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:45:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 07:45:05,550 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 07:45:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 07:45:05,550 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 07:45:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:45:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:45:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:45:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:45:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:45:05,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:45:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 07:45:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:45:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:45:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:45:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:45:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:45:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:45:05,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 07:45:05,859 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:45:05,861 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:45:06,471 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:45:06,597 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:45:06,598 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 07:45:06,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:45:06 BoogieIcfgContainer [2023-11-23 07:45:06,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:45:06,600 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:45:06,601 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:45:06,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:45:06,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:45:03" (1/3) ... [2023-11-23 07:45:06,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e94ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:45:06, skipping insertion in model container [2023-11-23 07:45:06,604 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:45:04" (2/3) ... [2023-11-23 07:45:06,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10e94ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:45:06, skipping insertion in model container [2023-11-23 07:45:06,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:45:06" (3/3) ... [2023-11-23 07:45:06,608 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_compare_harness.i [2023-11-23 07:45:06,622 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:45:06,624 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:45:06,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:45:06,675 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;@2eb50150, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:45:06,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:45:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 65 states have (on average 1.323076923076923) internal successors, (86), 66 states have internal predecessors, (86), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 07:45:06,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-23 07:45:06,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:45:06,693 INFO L195 NwaCegarLoop]: trace histogram [4, 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 07:45:06,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:45:06,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:45:06,704 INFO L85 PathProgramCache]: Analyzing trace with hash -888351438, now seen corresponding path program 1 times [2023-11-23 07:45:06,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:45:06,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312303695] [2023-11-23 07:45:06,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:45:06,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:45:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:45:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:45:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:45:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:45:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:45:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:45:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:45:07,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,265 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 07:45:07,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:45:07,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312303695] [2023-11-23 07:45:07,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312303695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:45:07,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:45:07,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 07:45:07,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846752452] [2023-11-23 07:45:07,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:45:07,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 07:45:07,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:45:07,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 07:45:07,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:45:07,300 INFO L87 Difference]: Start difference. First operand has 110 states, 65 states have (on average 1.323076923076923) internal successors, (86), 66 states have internal predecessors, (86), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 07:45:07,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:45:07,396 INFO L93 Difference]: Finished difference Result 216 states and 315 transitions. [2023-11-23 07:45:07,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 07:45:07,398 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2023-11-23 07:45:07,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:45:07,408 INFO L225 Difference]: With dead ends: 216 [2023-11-23 07:45:07,408 INFO L226 Difference]: Without dead ends: 107 [2023-11-23 07:45:07,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 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 07:45:07,422 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:45:07,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 141 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:45:07,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-23 07:45:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2023-11-23 07:45:07,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 64 states have internal predecessors, (81), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 07:45:07,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 146 transitions. [2023-11-23 07:45:07,483 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 146 transitions. Word has length 45 [2023-11-23 07:45:07,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:45:07,485 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 146 transitions. [2023-11-23 07:45:07,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 07:45:07,485 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 146 transitions. [2023-11-23 07:45:07,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-23 07:45:07,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:45:07,492 INFO L195 NwaCegarLoop]: trace histogram [4, 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 07:45:07,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 07:45:07,492 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:45:07,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:45:07,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1476766862, now seen corresponding path program 1 times [2023-11-23 07:45:07,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:45:07,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248700216] [2023-11-23 07:45:07,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:45:07,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:45:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:45:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:45:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:45:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:45:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:07,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:45:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:08,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:45:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:08,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:45:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:08,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 07:45:08,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:45:08,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248700216] [2023-11-23 07:45:08,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248700216] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:45:08,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:45:08,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:45:08,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60858213] [2023-11-23 07:45:08,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:45:08,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:45:08,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:45:08,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:45:08,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:45:08,050 INFO L87 Difference]: Start difference. First operand 107 states and 146 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 07:45:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:45:08,153 INFO L93 Difference]: Finished difference Result 159 states and 215 transitions. [2023-11-23 07:45:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:45:08,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2023-11-23 07:45:08,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:45:08,157 INFO L225 Difference]: With dead ends: 159 [2023-11-23 07:45:08,157 INFO L226 Difference]: Without dead ends: 125 [2023-11-23 07:45:08,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:45:08,159 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 6 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:45:08,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 398 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:45:08,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-23 07:45:08,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2023-11-23 07:45:08,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 73 states have (on average 1.273972602739726) internal successors, (93), 74 states have internal predecessors, (93), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 07:45:08,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 168 transitions. [2023-11-23 07:45:08,182 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 168 transitions. Word has length 45 [2023-11-23 07:45:08,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:45:08,183 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 168 transitions. [2023-11-23 07:45:08,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 07:45:08,183 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 168 transitions. [2023-11-23 07:45:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 07:45:08,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:45:08,187 INFO L195 NwaCegarLoop]: trace histogram [4, 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 07:45:08,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 07:45:08,187 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:45:08,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:45:08,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1407805481, now seen corresponding path program 1 times [2023-11-23 07:45:08,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:45:08,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592605055] [2023-11-23 07:45:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:45:08,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:45:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:08,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:45:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:08,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:45:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:08,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:45:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:08,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:45:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:08,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:45:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:08,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:45:08,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:08,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:45:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:08,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:45:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:08,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 07:45:08,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:45:08,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592605055] [2023-11-23 07:45:08,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592605055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:45:08,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:45:08,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:45:08,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554200324] [2023-11-23 07:45:08,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:45:08,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:45:08,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:45:08,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:45:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:45:08,569 INFO L87 Difference]: Start difference. First operand 122 states and 168 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:45:08,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:45:08,658 INFO L93 Difference]: Finished difference Result 148 states and 201 transitions. [2023-11-23 07:45:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:45:08,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 53 [2023-11-23 07:45:08,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:45:08,661 INFO L225 Difference]: With dead ends: 148 [2023-11-23 07:45:08,661 INFO L226 Difference]: Without dead ends: 128 [2023-11-23 07:45:08,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:45:08,664 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:45:08,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 400 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:45:08,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-23 07:45:08,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2023-11-23 07:45:08,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 38 states have call successors, (38), 10 states have call predecessors, (38), 11 states have return successors, (39), 39 states have call predecessors, (39), 37 states have call successors, (39) [2023-11-23 07:45:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 175 transitions. [2023-11-23 07:45:08,684 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 175 transitions. Word has length 53 [2023-11-23 07:45:08,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:45:08,684 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 175 transitions. [2023-11-23 07:45:08,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 07:45:08,684 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 175 transitions. [2023-11-23 07:45:08,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 07:45:08,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:45:08,686 INFO L195 NwaCegarLoop]: trace histogram [4, 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 07:45:08,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 07:45:08,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:45:08,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:45:08,686 INFO L85 PathProgramCache]: Analyzing trace with hash -26880177, now seen corresponding path program 1 times [2023-11-23 07:45:08,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:45:08,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364344326] [2023-11-23 07:45:08,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:45:08,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:45:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:09,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:45:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:09,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:45:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:09,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:45:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:09,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:45:09,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:09,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:45:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:09,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:45:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:09,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:45:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:09,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:45:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 07:45:09,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:45:09,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364344326] [2023-11-23 07:45:09,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364344326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:45:09,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:45:09,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 07:45:09,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648155389] [2023-11-23 07:45:09,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:45:09,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:45:09,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:45:09,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:45:09,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:45:09,436 INFO L87 Difference]: Start difference. First operand 128 states and 175 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:45:09,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:45:09,697 INFO L93 Difference]: Finished difference Result 156 states and 217 transitions. [2023-11-23 07:45:09,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:45:09,697 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 54 [2023-11-23 07:45:09,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:45:09,703 INFO L225 Difference]: With dead ends: 156 [2023-11-23 07:45:09,703 INFO L226 Difference]: Without dead ends: 149 [2023-11-23 07:45:09,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:45:09,706 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 32 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:45:09,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1060 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:45:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-23 07:45:09,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 144. [2023-11-23 07:45:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 90 states have (on average 1.2444444444444445) internal successors, (112), 91 states have internal predecessors, (112), 41 states have call successors, (41), 10 states have call predecessors, (41), 12 states have return successors, (50), 42 states have call predecessors, (50), 40 states have call successors, (50) [2023-11-23 07:45:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 203 transitions. [2023-11-23 07:45:09,722 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 203 transitions. Word has length 54 [2023-11-23 07:45:09,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:45:09,722 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 203 transitions. [2023-11-23 07:45:09,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-23 07:45:09,723 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 203 transitions. [2023-11-23 07:45:09,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 07:45:09,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:45:09,723 INFO L195 NwaCegarLoop]: trace histogram [4, 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 07:45:09,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 07:45:09,724 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:45:09,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:45:09,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1801887539, now seen corresponding path program 1 times [2023-11-23 07:45:09,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:45:09,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772012751] [2023-11-23 07:45:09,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:45:09,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:45:09,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:10,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:45:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:10,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:45:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:10,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:45:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:45:10,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:10,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 07:45:10,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:10,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:45:10,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:10,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:45:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:10,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:45:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:10,189 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 07:45:10,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:45:10,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772012751] [2023-11-23 07:45:10,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772012751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:45:10,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:45:10,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:45:10,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439475799] [2023-11-23 07:45:10,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:45:10,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:45:10,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:45:10,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:45:10,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:45:10,192 INFO L87 Difference]: Start difference. First operand 144 states and 203 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 07:45:10,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:45:10,294 INFO L93 Difference]: Finished difference Result 164 states and 225 transitions. [2023-11-23 07:45:10,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:45:10,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 54 [2023-11-23 07:45:10,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:45:10,295 INFO L225 Difference]: With dead ends: 164 [2023-11-23 07:45:10,295 INFO L226 Difference]: Without dead ends: 139 [2023-11-23 07:45:10,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:45:10,296 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 18 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:45:10,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 666 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:45:10,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-23 07:45:10,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 132. [2023-11-23 07:45:10,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 80 states have (on average 1.25) internal successors, (100), 81 states have internal predecessors, (100), 40 states have call successors, (40), 10 states have call predecessors, (40), 11 states have return successors, (40), 40 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 07:45:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 180 transitions. [2023-11-23 07:45:10,302 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 180 transitions. Word has length 54 [2023-11-23 07:45:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:45:10,303 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 180 transitions. [2023-11-23 07:45:10,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 07:45:10,303 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 180 transitions. [2023-11-23 07:45:10,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 07:45:10,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:45:10,304 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2023-11-23 07:45:10,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 07:45:10,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:45:10,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:45:10,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1374342291, now seen corresponding path program 1 times [2023-11-23 07:45:10,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:45:10,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140367091] [2023-11-23 07:45:10,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:45:10,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:45:10,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:10,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:45:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:45:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:11,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:45:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:11,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:45:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:11,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:45:11,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:11,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:45:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:11,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:45:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:11,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:45:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:45:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:11,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:45:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:11,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:45:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:11,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:45:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:11,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:45:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:11,190 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 07:45:11,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:45:11,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140367091] [2023-11-23 07:45:11,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140367091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:45:11,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:45:11,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 07:45:11,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023786017] [2023-11-23 07:45:11,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:45:11,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 07:45:11,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:45:11,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 07:45:11,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:45:11,193 INFO L87 Difference]: Start difference. First operand 132 states and 180 transitions. Second operand has 14 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 07:45:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:45:12,196 INFO L93 Difference]: Finished difference Result 207 states and 285 transitions. [2023-11-23 07:45:12,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 07:45:12,196 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) Word has length 74 [2023-11-23 07:45:12,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:45:12,200 INFO L225 Difference]: With dead ends: 207 [2023-11-23 07:45:12,200 INFO L226 Difference]: Without dead ends: 173 [2023-11-23 07:45:12,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:45:12,201 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 104 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 1402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:45:12,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 547 Invalid, 1402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1358 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:45:12,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-23 07:45:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 158. [2023-11-23 07:45:12,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 98 states have internal predecessors, (122), 49 states have call successors, (49), 10 states have call predecessors, (49), 13 states have return successors, (53), 49 states have call predecessors, (53), 47 states have call successors, (53) [2023-11-23 07:45:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 224 transitions. [2023-11-23 07:45:12,218 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 224 transitions. Word has length 74 [2023-11-23 07:45:12,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:45:12,218 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 224 transitions. [2023-11-23 07:45:12,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 10 states have internal predecessors, (34), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 07:45:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 224 transitions. [2023-11-23 07:45:12,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 07:45:12,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:45:12,221 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2023-11-23 07:45:12,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 07:45:12,221 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:45:12,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:45:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash 69811123, now seen corresponding path program 1 times [2023-11-23 07:45:12,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:45:12,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851963532] [2023-11-23 07:45:12,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:45:12,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:45:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:45:12,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:45:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:45:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:45:12,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:45:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:45:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:45:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:45:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:45:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:45:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:45:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:45:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:12,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:45:12,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:13,017 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 07:45:13,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:45:13,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851963532] [2023-11-23 07:45:13,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851963532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:45:13,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:45:13,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-23 07:45:13,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354531977] [2023-11-23 07:45:13,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:45:13,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 07:45:13,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:45:13,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 07:45:13,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:45:13,020 INFO L87 Difference]: Start difference. First operand 158 states and 224 transitions. Second operand has 16 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 07:45:14,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:45:14,299 INFO L93 Difference]: Finished difference Result 205 states and 303 transitions. [2023-11-23 07:45:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:45:14,328 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) Word has length 79 [2023-11-23 07:45:14,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:45:14,331 INFO L225 Difference]: With dead ends: 205 [2023-11-23 07:45:14,331 INFO L226 Difference]: Without dead ends: 198 [2023-11-23 07:45:14,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-11-23 07:45:14,333 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 98 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 1370 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:45:14,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1021 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1370 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 07:45:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-23 07:45:14,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 192. [2023-11-23 07:45:14,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 119 states have (on average 1.2773109243697478) internal successors, (152), 121 states have internal predecessors, (152), 58 states have call successors, (58), 10 states have call predecessors, (58), 14 states have return successors, (76), 60 states have call predecessors, (76), 56 states have call successors, (76) [2023-11-23 07:45:14,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 286 transitions. [2023-11-23 07:45:14,355 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 286 transitions. Word has length 79 [2023-11-23 07:45:14,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:45:14,355 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 286 transitions. [2023-11-23 07:45:14,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 5 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 6 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 07:45:14,356 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 286 transitions. [2023-11-23 07:45:14,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 07:45:14,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:45:14,365 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2023-11-23 07:45:14,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 07:45:14,365 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:45:14,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:45:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1705196239, now seen corresponding path program 1 times [2023-11-23 07:45:14,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:45:14,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080821356] [2023-11-23 07:45:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:45:14,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:45:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:45:38,116 WARN L293 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 262 DAG size of output: 256 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-23 07:46:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:01,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:46:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:02,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:46:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:11,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:11,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:46:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:46:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:12,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:12,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:12,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:46:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 07:46:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:12,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:46:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:46:13,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:13,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:46:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:13,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:46:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:20,942 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 07:46:20,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:46:20,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080821356] [2023-11-23 07:46:20,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080821356] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:46:20,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779173323] [2023-11-23 07:46:20,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:20,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:20,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:46:20,946 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 07:46:20,949 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 07:46:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:21,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 2602 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-23 07:46:21,542 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:46:22,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 53 [2023-11-23 07:46:22,476 INFO L349 Elim1Store]: treesize reduction 32, result has 45.8 percent of original size [2023-11-23 07:46:22,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 96 [2023-11-23 07:46:22,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:46:22,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:46:22,528 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 07:46:22,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 11 [2023-11-23 07:46:51,875 INFO L349 Elim1Store]: treesize reduction 99, result has 41.4 percent of original size [2023-11-23 07:46:51,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 212 treesize of output 190 [2023-11-23 07:46:52,241 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 07:46:52,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:46:57,127 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 51 treesize of output 47 [2023-11-23 07:46:57,159 INFO L349 Elim1Store]: treesize reduction 23, result has 61.7 percent of original size [2023-11-23 07:46:57,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 47 treesize of output 101 [2023-11-23 07:46:57,168 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:46:57,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 14 [2023-11-23 07:46:57,860 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 07:46:57,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779173323] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:46:57,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:46:57,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 17] total 55 [2023-11-23 07:46:57,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677599935] [2023-11-23 07:46:57,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:46:57,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-11-23 07:46:57,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:46:57,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-11-23 07:46:57,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2803, Unknown=5, NotChecked=0, Total=2970 [2023-11-23 07:46:57,863 INFO L87 Difference]: Start difference. First operand 192 states and 286 transitions. Second operand has 55 states, 44 states have (on average 2.3863636363636362) internal successors, (105), 42 states have internal predecessors, (105), 15 states have call successors, (32), 6 states have call predecessors, (32), 13 states have return successors, (31), 21 states have call predecessors, (31), 13 states have call successors, (31) [2023-11-23 07:47:34,018 WARN L293 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 491 DAG size of output: 36 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-23 07:47:47,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:47,787 INFO L93 Difference]: Finished difference Result 250 states and 371 transitions. [2023-11-23 07:47:47,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-23 07:47:47,788 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 44 states have (on average 2.3863636363636362) internal successors, (105), 42 states have internal predecessors, (105), 15 states have call successors, (32), 6 states have call predecessors, (32), 13 states have return successors, (31), 21 states have call predecessors, (31), 13 states have call successors, (31) Word has length 79 [2023-11-23 07:47:47,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:47,789 INFO L225 Difference]: With dead ends: 250 [2023-11-23 07:47:47,789 INFO L226 Difference]: Without dead ends: 234 [2023-11-23 07:47:47,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 147 SyntacticMatches, 4 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1485 ImplicationChecksByTransitivity, 80.9s TimeCoverageRelationStatistics Valid=470, Invalid=6995, Unknown=17, NotChecked=0, Total=7482 [2023-11-23 07:47:47,792 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 292 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 5770 mSolverCounterSat, 123 mSolverCounterUnsat, 54 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 5947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 5770 IncrementalHoareTripleChecker+Invalid, 54 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:47,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 2253 Invalid, 5947 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 5770 Invalid, 54 Unknown, 0 Unchecked, 19.6s Time] [2023-11-23 07:47:47,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-11-23 07:47:47,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 203. [2023-11-23 07:47:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 125 states have (on average 1.28) internal successors, (160), 128 states have internal predecessors, (160), 59 states have call successors, (59), 16 states have call predecessors, (59), 18 states have return successors, (59), 58 states have call predecessors, (59), 55 states have call successors, (59) [2023-11-23 07:47:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 278 transitions. [2023-11-23 07:47:47,816 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 278 transitions. Word has length 79 [2023-11-23 07:47:47,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:47,817 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 278 transitions. [2023-11-23 07:47:47,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 44 states have (on average 2.3863636363636362) internal successors, (105), 42 states have internal predecessors, (105), 15 states have call successors, (32), 6 states have call predecessors, (32), 13 states have return successors, (31), 21 states have call predecessors, (31), 13 states have call successors, (31) [2023-11-23 07:47:47,818 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 278 transitions. [2023-11-23 07:47:47,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 07:47:47,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:47,820 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:47,839 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 07:47:48,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:47:48,021 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:48,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:48,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1459019781, now seen corresponding path program 1 times [2023-11-23 07:47:48,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:48,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161127474] [2023-11-23 07:47:48,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:48,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:48,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:48,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:47:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:47:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:47:48,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:47:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:47:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:47:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,806 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 07:47:48,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:48,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161127474] [2023-11-23 07:47:48,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161127474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:48,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:48,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-23 07:47:48,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205509160] [2023-11-23 07:47:48,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:48,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 07:47:48,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:48,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 07:47:48,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:47:48,808 INFO L87 Difference]: Start difference. First operand 203 states and 278 transitions. Second operand has 16 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 07:47:50,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:50,418 INFO L93 Difference]: Finished difference Result 284 states and 393 transitions. [2023-11-23 07:47:50,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 07:47:50,419 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) Word has length 82 [2023-11-23 07:47:50,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:50,420 INFO L225 Difference]: With dead ends: 284 [2023-11-23 07:47:50,420 INFO L226 Difference]: Without dead ends: 224 [2023-11-23 07:47:50,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:47:50,421 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 164 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:50,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 594 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 07:47:50,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-23 07:47:50,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 206. [2023-11-23 07:47:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 127 states have (on average 1.2677165354330708) internal successors, (161), 130 states have internal predecessors, (161), 60 states have call successors, (60), 16 states have call predecessors, (60), 18 states have return successors, (60), 59 states have call predecessors, (60), 56 states have call successors, (60) [2023-11-23 07:47:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 281 transitions. [2023-11-23 07:47:50,439 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 281 transitions. Word has length 82 [2023-11-23 07:47:50,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:50,440 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 281 transitions. [2023-11-23 07:47:50,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.857142857142857) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 07:47:50,440 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 281 transitions. [2023-11-23 07:47:50,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 07:47:50,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:50,441 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:50,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 07:47:50,441 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:50,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash -591371371, now seen corresponding path program 1 times [2023-11-23 07:47:50,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:50,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55227016] [2023-11-23 07:47:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:50,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:50,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:50,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:47:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:47:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:47:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:47:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:47:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:47:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:47:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:51,209 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 07:47:51,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:51,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55227016] [2023-11-23 07:47:51,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55227016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:51,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:51,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-11-23 07:47:51,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467464540] [2023-11-23 07:47:51,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:51,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 07:47:51,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:51,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 07:47:51,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:47:51,212 INFO L87 Difference]: Start difference. First operand 206 states and 281 transitions. Second operand has 18 states, 16 states have (on average 2.875) internal successors, (46), 14 states have internal predecessors, (46), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 07:47:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:52,999 INFO L93 Difference]: Finished difference Result 402 states and 589 transitions. [2023-11-23 07:47:52,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 07:47:53,000 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.875) internal successors, (46), 14 states have internal predecessors, (46), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) Word has length 90 [2023-11-23 07:47:53,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:53,001 INFO L225 Difference]: With dead ends: 402 [2023-11-23 07:47:53,001 INFO L226 Difference]: Without dead ends: 304 [2023-11-23 07:47:53,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=600, Unknown=0, NotChecked=0, Total=702 [2023-11-23 07:47:53,003 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 202 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:53,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 679 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 07:47:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2023-11-23 07:47:53,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 245. [2023-11-23 07:47:53,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 153 states have (on average 1.2483660130718954) internal successors, (191), 156 states have internal predecessors, (191), 71 states have call successors, (71), 16 states have call predecessors, (71), 20 states have return successors, (82), 72 states have call predecessors, (82), 66 states have call successors, (82) [2023-11-23 07:47:53,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 344 transitions. [2023-11-23 07:47:53,053 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 344 transitions. Word has length 90 [2023-11-23 07:47:53,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:53,053 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 344 transitions. [2023-11-23 07:47:53,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.875) internal successors, (46), 14 states have internal predecessors, (46), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 07:47:53,053 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 344 transitions. [2023-11-23 07:47:53,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 07:47:53,054 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:53,055 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:53,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 07:47:53,055 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:53,055 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:53,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1070282581, now seen corresponding path program 1 times [2023-11-23 07:47:53,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:53,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828255967] [2023-11-23 07:47:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:53,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:53,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:53,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:53,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:54,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:54,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:54,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:47:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:47:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:47:54,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:47:54,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:47:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:47:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 07:47:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 07:47:54,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:54,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828255967] [2023-11-23 07:47:54,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828255967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:54,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:54,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 07:47:54,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872293852] [2023-11-23 07:47:54,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:54,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 07:47:54,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:54,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 07:47:54,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:47:54,213 INFO L87 Difference]: Start difference. First operand 245 states and 344 transitions. Second operand has 17 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 07:47:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:55,492 INFO L93 Difference]: Finished difference Result 295 states and 412 transitions. [2023-11-23 07:47:55,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 07:47:55,493 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) Word has length 90 [2023-11-23 07:47:55,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:55,496 INFO L225 Difference]: With dead ends: 295 [2023-11-23 07:47:55,496 INFO L226 Difference]: Without dead ends: 293 [2023-11-23 07:47:55,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=481, Unknown=0, NotChecked=0, Total=552 [2023-11-23 07:47:55,497 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 116 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 1482 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:55,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 622 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1482 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 07:47:55,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2023-11-23 07:47:55,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 259. [2023-11-23 07:47:55,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 163 states have (on average 1.2453987730061349) internal successors, (203), 167 states have internal predecessors, (203), 73 states have call successors, (73), 17 states have call predecessors, (73), 22 states have return successors, (86), 74 states have call predecessors, (86), 68 states have call successors, (86) [2023-11-23 07:47:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 362 transitions. [2023-11-23 07:47:55,526 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 362 transitions. Word has length 90 [2023-11-23 07:47:55,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:55,526 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 362 transitions. [2023-11-23 07:47:55,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 12 states have internal predecessors, (41), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 7 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 07:47:55,526 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 362 transitions. [2023-11-23 07:47:55,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-23 07:47:55,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:55,529 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:55,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 07:47:55,529 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:55,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:55,529 INFO L85 PathProgramCache]: Analyzing trace with hash 975599221, now seen corresponding path program 1 times [2023-11-23 07:47:55,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:55,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252592220] [2023-11-23 07:47:55,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:55,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:55,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:47:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:47:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:47:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:47:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:47:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:47:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 07:47:55,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:55,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252592220] [2023-11-23 07:47:55,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252592220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:55,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:55,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:47:55,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905182616] [2023-11-23 07:47:55,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:55,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:47:55,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:47:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:47:55,885 INFO L87 Difference]: Start difference. First operand 259 states and 362 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 07:47:56,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:56,368 INFO L93 Difference]: Finished difference Result 323 states and 446 transitions. [2023-11-23 07:47:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:47:56,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 84 [2023-11-23 07:47:56,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:56,370 INFO L225 Difference]: With dead ends: 323 [2023-11-23 07:47:56,370 INFO L226 Difference]: Without dead ends: 269 [2023-11-23 07:47:56,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:47:56,371 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 61 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:56,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 237 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:47:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-23 07:47:56,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2023-11-23 07:47:56,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 171 states have (on average 1.2339181286549707) internal successors, (211), 174 states have internal predecessors, (211), 73 states have call successors, (73), 17 states have call predecessors, (73), 24 states have return successors, (89), 77 states have call predecessors, (89), 68 states have call successors, (89) [2023-11-23 07:47:56,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 373 transitions. [2023-11-23 07:47:56,395 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 373 transitions. Word has length 84 [2023-11-23 07:47:56,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:56,395 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 373 transitions. [2023-11-23 07:47:56,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 07:47:56,395 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 373 transitions. [2023-11-23 07:47:56,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-23 07:47:56,396 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:56,397 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:56,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 07:47:56,397 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:56,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:56,397 INFO L85 PathProgramCache]: Analyzing trace with hash 593339208, now seen corresponding path program 1 times [2023-11-23 07:47:56,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:56,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992755106] [2023-11-23 07:47:56,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:56,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:47:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:47:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 07:47:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:47:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:47:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 07:47:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:47:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:47:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:47:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:47:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:47:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:56,678 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 07:47:56,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:56,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992755106] [2023-11-23 07:47:56,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992755106] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:56,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:56,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:47:56,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113216429] [2023-11-23 07:47:56,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:56,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:47:56,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:56,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:47:56,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:47:56,681 INFO L87 Difference]: Start difference. First operand 269 states and 373 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 4 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 07:47:56,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:56,793 INFO L93 Difference]: Finished difference Result 400 states and 555 transitions. [2023-11-23 07:47:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:47:56,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 4 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 90 [2023-11-23 07:47:56,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:56,795 INFO L225 Difference]: With dead ends: 400 [2023-11-23 07:47:56,795 INFO L226 Difference]: Without dead ends: 254 [2023-11-23 07:47:56,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:47:56,796 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 23 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:56,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 660 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:47:56,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-23 07:47:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 249. [2023-11-23 07:47:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 159 states have (on average 1.2264150943396226) internal successors, (195), 161 states have internal predecessors, (195), 65 states have call successors, (65), 16 states have call predecessors, (65), 24 states have return successors, (83), 71 states have call predecessors, (83), 62 states have call successors, (83) [2023-11-23 07:47:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 343 transitions. [2023-11-23 07:47:56,819 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 343 transitions. Word has length 90 [2023-11-23 07:47:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:56,820 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 343 transitions. [2023-11-23 07:47:56,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 4 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 07:47:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 343 transitions. [2023-11-23 07:47:56,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-23 07:47:56,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:56,821 INFO L195 NwaCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:56,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 07:47:56,821 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:56,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:56,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1234889906, now seen corresponding path program 1 times [2023-11-23 07:47:56,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:56,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913759293] [2023-11-23 07:47:56,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:56,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:57,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:57,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:47:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:47:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:47:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:47:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 07:47:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 07:47:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:57,290 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 07:47:57,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:57,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913759293] [2023-11-23 07:47:57,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913759293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:57,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:57,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 07:47:57,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212315212] [2023-11-23 07:47:57,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:57,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:47:57,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:57,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:47:57,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:47:57,294 INFO L87 Difference]: Start difference. First operand 249 states and 343 transitions. Second operand has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-23 07:47:57,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:57,875 INFO L93 Difference]: Finished difference Result 268 states and 364 transitions. [2023-11-23 07:47:57,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:47:57,876 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 83 [2023-11-23 07:47:57,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:57,877 INFO L225 Difference]: With dead ends: 268 [2023-11-23 07:47:57,877 INFO L226 Difference]: Without dead ends: 231 [2023-11-23 07:47:57,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:47:57,877 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 77 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:57,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 401 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:47:57,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-11-23 07:47:57,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 210. [2023-11-23 07:47:57,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 132 states have (on average 1.2045454545454546) internal successors, (159), 135 states have internal predecessors, (159), 56 states have call successors, (56), 16 states have call predecessors, (56), 21 states have return successors, (68), 58 states have call predecessors, (68), 53 states have call successors, (68) [2023-11-23 07:47:57,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 283 transitions. [2023-11-23 07:47:57,899 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 283 transitions. Word has length 83 [2023-11-23 07:47:57,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:57,901 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 283 transitions. [2023-11-23 07:47:57,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.555555555555555) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-23 07:47:57,901 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 283 transitions. [2023-11-23 07:47:57,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-23 07:47:57,902 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:57,902 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:57,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 07:47:57,903 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:57,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:57,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1469433561, now seen corresponding path program 1 times [2023-11-23 07:47:57,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:57,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553641483] [2023-11-23 07:47:57,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:57,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:12,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:12,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:48:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:17,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:17,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:48:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:48:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:18,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:18,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:18,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:48:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:18,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:48:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:48:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:18,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:48:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 07:48:18,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:48:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:18,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:48:18,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:18,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:48:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:18,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:48:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:51,507 WARN L293 SmtUtils]: Spent 11.23s on a formula simplification. DAG size of input: 79 DAG size of output: 51 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-23 07:49:09,245 WARN L293 SmtUtils]: Spent 7.67s on a formula simplification that was a NOOP. DAG size: 259 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-23 07:49:09,247 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 07:49:09,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:49:09,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553641483] [2023-11-23 07:49:09,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553641483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:49:09,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475530781] [2023-11-23 07:49:09,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:49:09,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:49:09,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:49:09,249 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 07:49:09,250 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 07:49:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:09,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-23 07:49:09,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... Killed by 15