./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_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 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:59:05,573 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:59:05,642 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:59:05,646 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:59:05,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:59:05,698 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:59:05,699 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:59:05,699 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:59:05,700 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:59:05,703 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:59:05,703 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:59:05,703 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:59:05,704 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:59:05,705 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:59:05,705 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:59:05,706 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:59:05,706 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:59:05,706 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:59:05,706 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:59:05,707 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:59:05,708 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:59:05,708 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:59:05,708 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:59:05,708 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:59:05,709 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:59:05,709 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:59:05,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:59:05,709 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:59:05,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:59:05,710 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:59:05,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:59:05,711 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:59:05,711 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:59:05,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:59:05,711 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:59:05,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:59:05,712 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:59:05,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:59:05,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:59:05,712 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a14ff88669e01083ca46db0c80d319fe5a2f969bf71d428fc27ed5e7149831c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:59:05,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:59:05,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:59:05,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:59:05,964 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:59:05,965 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:59:05,966 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2023-11-23 06:59:07,158 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:59:07,591 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:59:07,591 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i [2023-11-23 06:59:07,631 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73f9219e/b795cc3612294326873e4e6d38d8bde4/FLAG3b0558bea [2023-11-23 06:59:07,648 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c73f9219e/b795cc3612294326873e4e6d38d8bde4 [2023-11-23 06:59:07,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:59:07,652 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:59:07,654 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:59:07,654 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:59:07,658 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:59:07,659 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:59:07" (1/1) ... [2023-11-23 06:59:07,660 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc055dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:07, skipping insertion in model container [2023-11-23 06:59:07,660 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:59:07" (1/1) ... [2023-11-23 06:59:07,769 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:59:08,006 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2023-11-23 06:59:08,015 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2023-11-23 06:59:08,686 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:08,700 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:08,701 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:08,703 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:08,704 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:08,710 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:08,711 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:08,712 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:08,712 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,045 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:59:09,047 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:59:09,048 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:59:09,049 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:59:09,053 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:59:09,054 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:59:09,055 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:59:09,057 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:59:09,057 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:59:09,059 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:59:09,217 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,220 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:59:09,317 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:59:09,334 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4510,4523] [2023-11-23 06:59:09,335 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness.i[4570,4583] [2023-11-23 06:59:09,368 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,369 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,369 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,370 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,370 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,379 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,380 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,381 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,382 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,420 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:59:09,421 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:59:09,422 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:59:09,422 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:59:09,423 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:59:09,423 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:59:09,424 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:59:09,424 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:59:09,425 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:59:09,430 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:59:09,499 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-23 06:59:09,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,501 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:59:09,510 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-23 06:59:09,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:59:09,695 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,696 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,696 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,696 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,696 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,696 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,696 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,696 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,697 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,697 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,697 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,697 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,697 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,697 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,697 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,697 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,697 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,698 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:59:09,703 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:59:09,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09 WrapperNode [2023-11-23 06:59:09,704 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:59:09,705 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:59:09,705 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:59:09,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:59:09,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (1/1) ... [2023-11-23 06:59:09,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (1/1) ... [2023-11-23 06:59:09,842 INFO L138 Inliner]: procedures = 690, calls = 2659, calls flagged for inlining = 59, calls inlined = 6, statements flattened = 902 [2023-11-23 06:59:09,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:59:09,846 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:59:09,846 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:59:09,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:59:09,855 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (1/1) ... [2023-11-23 06:59:09,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (1/1) ... [2023-11-23 06:59:09,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (1/1) ... [2023-11-23 06:59:09,933 INFO L188 MemorySlicer]: Split 584 memory accesses to 6 slices as follows [2, 256, 6, 70, 247, 3]. 44 percent of accesses are in the largest equivalence class. The 510 initializations are split as follows [2, 256, 0, 8, 241, 3]. The 10 writes are split as follows [0, 0, 2, 7, 1, 0]. [2023-11-23 06:59:09,934 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (1/1) ... [2023-11-23 06:59:09,934 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (1/1) ... [2023-11-23 06:59:09,975 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (1/1) ... [2023-11-23 06:59:09,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (1/1) ... [2023-11-23 06:59:09,999 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (1/1) ... [2023-11-23 06:59:10,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (1/1) ... [2023-11-23 06:59:10,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:59:10,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:59:10,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:59:10,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:59:10,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (1/1) ... [2023-11-23 06:59:10,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:59:10,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:10,061 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 06:59:10,082 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 06:59:10,130 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 06:59:10,131 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 06:59:10,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:59:10,131 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:59:10,131 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:59:10,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:59:10,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:59:10,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:59:10,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:59:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:59:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:59:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:59:10,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:59:10,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:59:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:59:10,134 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 06:59:10,135 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 06:59:10,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:59:10,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:59:10,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:59:10,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:59:10,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:59:10,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:59:10,139 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 06:59:10,139 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 06:59:10,140 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 06:59:10,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 06:59:10,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:59:10,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:59:10,141 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:59:10,141 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:59:10,141 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 06:59:10,141 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 06:59:10,141 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:59:10,141 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:59:10,142 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 06:59:10,142 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 06:59:10,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:59:10,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:59:10,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:59:10,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:59:10,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:59:10,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:59:10,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:59:10,143 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-23 06:59:10,143 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-23 06:59:10,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:59:10,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:59:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:59:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:59:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:59:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:59:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:59:10,144 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:59:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 06:59:10,144 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 06:59:10,144 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-23 06:59:10,145 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-23 06:59:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:59:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:59:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:59:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:59:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:59:10,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:59:10,146 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2023-11-23 06:59:10,146 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2023-11-23 06:59:10,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:59:10,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:59:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:59:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:59:10,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:59:10,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:59:10,435 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:59:10,437 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:59:11,123 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:59:11,194 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:59:11,195 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 06:59:11,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:59:11 BoogieIcfgContainer [2023-11-23 06:59:11,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:59:11,196 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:59:11,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:59:11,199 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:59:11,199 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:59:07" (1/3) ... [2023-11-23 06:59:11,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dbfbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:59:11, skipping insertion in model container [2023-11-23 06:59:11,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:59:09" (2/3) ... [2023-11-23 06:59:11,200 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40dbfbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:59:11, skipping insertion in model container [2023-11-23 06:59:11,200 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:59:11" (3/3) ... [2023-11-23 06:59:11,201 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness.i [2023-11-23 06:59:11,214 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:59:11,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:59:11,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:59:11,253 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;@7d4690cc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:59:11,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:59:11,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 159 states, 89 states have (on average 1.2584269662921348) internal successors, (112), 91 states have internal predecessors, (112), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-23 06:59:11,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 06:59:11,267 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:11,267 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:11,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:11,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:11,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1609241965, now seen corresponding path program 1 times [2023-11-23 06:59:11,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:11,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307108881] [2023-11-23 06:59:11,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:11,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:59:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:59:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:59:11,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:59:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:59:11,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:59:11,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:11,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:59:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:11,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:59:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:59:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:59:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:59:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 06:59:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:59:12,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 06:59:12,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 06:59:12,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 06:59:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 06:59:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2023-11-23 06:59:12,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:12,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307108881] [2023-11-23 06:59:12,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307108881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:12,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:59:12,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:59:12,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338519230] [2023-11-23 06:59:12,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:12,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:59:12,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:12,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:59:12,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:59:12,160 INFO L87 Difference]: Start difference. First operand has 159 states, 89 states have (on average 1.2584269662921348) internal successors, (112), 91 states have internal predecessors, (112), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 06:59:13,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:13,096 INFO L93 Difference]: Finished difference Result 325 states and 483 transitions. [2023-11-23 06:59:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:59:13,098 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 141 [2023-11-23 06:59:13,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:13,105 INFO L225 Difference]: With dead ends: 325 [2023-11-23 06:59:13,106 INFO L226 Difference]: Without dead ends: 167 [2023-11-23 06:59:13,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:59:13,111 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 169 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:13,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 134 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:59:13,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2023-11-23 06:59:13,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2023-11-23 06:59:13,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 90 states have internal predecessors, (108), 53 states have call successors, (53), 15 states have call predecessors, (53), 15 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2023-11-23 06:59:13,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 213 transitions. [2023-11-23 06:59:13,157 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 213 transitions. Word has length 141 [2023-11-23 06:59:13,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:13,158 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 213 transitions. [2023-11-23 06:59:13,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 06:59:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 213 transitions. [2023-11-23 06:59:13,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2023-11-23 06:59:13,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:13,161 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:13,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:59:13,162 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:13,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:13,162 INFO L85 PathProgramCache]: Analyzing trace with hash -12094765, now seen corresponding path program 1 times [2023-11-23 06:59:13,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:13,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827030525] [2023-11-23 06:59:13,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:13,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:59:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:59:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:59:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:59:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 06:59:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:59:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:13,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:59:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:59:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:59:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:59:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:13,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:59:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 06:59:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:59:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 06:59:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 06:59:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 06:59:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 06:59:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-23 06:59:13,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:13,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827030525] [2023-11-23 06:59:13,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827030525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:13,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113464009] [2023-11-23 06:59:13,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:13,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:13,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:13,985 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 06:59:13,992 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 06:59:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:14,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:59:14,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-23 06:59:14,662 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:59:14,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113464009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:14,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:59:14,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 06:59:14,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727135308] [2023-11-23 06:59:14,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:14,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:59:14,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:14,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:59:14,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:59:14,665 INFO L87 Difference]: Start difference. First operand 157 states and 213 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 06:59:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:14,946 INFO L93 Difference]: Finished difference Result 310 states and 426 transitions. [2023-11-23 06:59:14,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:59:14,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 141 [2023-11-23 06:59:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:14,948 INFO L225 Difference]: With dead ends: 310 [2023-11-23 06:59:14,948 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 06:59:14,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:59:14,950 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 43 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:14,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 498 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:59:14,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 06:59:14,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-23 06:59:14,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 92 states have internal predecessors, (109), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (59), 52 states have call predecessors, (59), 52 states have call successors, (59) [2023-11-23 06:59:14,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 221 transitions. [2023-11-23 06:59:14,977 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 221 transitions. Word has length 141 [2023-11-23 06:59:14,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:14,978 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 221 transitions. [2023-11-23 06:59:14,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 06:59:14,978 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 221 transitions. [2023-11-23 06:59:14,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-23 06:59:14,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:14,981 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:15,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 06:59:15,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:15,195 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:15,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:15,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1700359800, now seen corresponding path program 1 times [2023-11-23 06:59:15,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:15,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979649724] [2023-11-23 06:59:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:15,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:15,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:59:15,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:59:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:59:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:59:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:59:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:59:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:59:15,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:59:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:59:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:59:15,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 06:59:15,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 06:59:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 06:59:15,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 06:59:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-23 06:59:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:15,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 06:59:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:16,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 06:59:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-23 06:59:16,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:16,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979649724] [2023-11-23 06:59:16,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979649724] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:16,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903564311] [2023-11-23 06:59:16,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:16,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:16,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:16,028 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 06:59:16,031 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 06:59:16,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:16,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 3151 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:59:16,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-23 06:59:16,616 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:59:16,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903564311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:16,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:59:16,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 06:59:16,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60256386] [2023-11-23 06:59:16,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:16,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:59:16,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:16,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:59:16,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:59:16,633 INFO L87 Difference]: Start difference. First operand 159 states and 221 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 06:59:16,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:16,919 INFO L93 Difference]: Finished difference Result 286 states and 400 transitions. [2023-11-23 06:59:16,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:59:16,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 147 [2023-11-23 06:59:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:16,925 INFO L225 Difference]: With dead ends: 286 [2023-11-23 06:59:16,926 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 06:59:16,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:59:16,929 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 41 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:16,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 506 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:59:16,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 06:59:16,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-23 06:59:16,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 92 states have internal predecessors, (109), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (57), 52 states have call predecessors, (57), 52 states have call successors, (57) [2023-11-23 06:59:16,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 219 transitions. [2023-11-23 06:59:16,951 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 219 transitions. Word has length 147 [2023-11-23 06:59:16,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:16,952 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 219 transitions. [2023-11-23 06:59:16,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-23 06:59:16,952 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 219 transitions. [2023-11-23 06:59:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 06:59:16,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:16,956 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:16,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 06:59:17,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 06:59:17,172 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:17,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:17,173 INFO L85 PathProgramCache]: Analyzing trace with hash -477712771, now seen corresponding path program 2 times [2023-11-23 06:59:17,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:17,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858779658] [2023-11-23 06:59:17,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:17,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:17,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:17,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:17,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:17,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:59:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:17,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:59:17,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:17,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:17,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:59:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:59:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:59:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:59:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:18,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:59:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:59:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:59:18,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:59:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 06:59:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 06:59:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 06:59:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 06:59:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 06:59:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 06:59:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 06:59:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:18,222 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-23 06:59:18,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858779658] [2023-11-23 06:59:18,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858779658] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16284410] [2023-11-23 06:59:18,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:59:18,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:18,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:18,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:59:18,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 06:59:18,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:59:18,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:59:18,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 3168 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 06:59:18,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-11-23 06:59:18,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:59:18,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16284410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:18,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:59:18,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2023-11-23 06:59:18,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646470616] [2023-11-23 06:59:18,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:18,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:59:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:18,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:59:18,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-23 06:59:18,850 INFO L87 Difference]: Start difference. First operand 159 states and 219 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 06:59:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:19,530 INFO L93 Difference]: Finished difference Result 273 states and 379 transitions. [2023-11-23 06:59:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:59:19,530 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 153 [2023-11-23 06:59:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:19,532 INFO L225 Difference]: With dead ends: 273 [2023-11-23 06:59:19,532 INFO L226 Difference]: Without dead ends: 159 [2023-11-23 06:59:19,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:59:19,533 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 56 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:19,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1014 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:59:19,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-23 06:59:19,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2023-11-23 06:59:19,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 92 states have internal predecessors, (109), 53 states have call successors, (53), 15 states have call predecessors, (53), 16 states have return successors, (53), 52 states have call predecessors, (53), 52 states have call successors, (53) [2023-11-23 06:59:19,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 215 transitions. [2023-11-23 06:59:19,548 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 215 transitions. Word has length 153 [2023-11-23 06:59:19,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:19,548 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 215 transitions. [2023-11-23 06:59:19,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 06:59:19,548 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 215 transitions. [2023-11-23 06:59:19,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-23 06:59:19,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:19,550 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:19,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 06:59:19,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:19,768 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:19,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:19,769 INFO L85 PathProgramCache]: Analyzing trace with hash -905283896, now seen corresponding path program 3 times [2023-11-23 06:59:19,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:19,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795782071] [2023-11-23 06:59:19,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:19,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:20,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:59:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:59:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:59:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:59:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:59:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:59:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:59:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:59:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:59:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:59:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 06:59:20,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 06:59:20,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 06:59:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 06:59:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 06:59:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 06:59:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 06:59:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-11-23 06:59:20,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:20,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795782071] [2023-11-23 06:59:20,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795782071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:20,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133512256] [2023-11-23 06:59:20,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 06:59:20,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:20,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:20,413 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:59:20,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 06:59:20,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 06:59:20,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:59:20,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 2311 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 06:59:20,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:20,909 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2023-11-23 06:59:20,909 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:59:20,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133512256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:20,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:59:20,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-23 06:59:20,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324895568] [2023-11-23 06:59:20,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:20,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:59:20,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:20,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:59:20,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:59:20,911 INFO L87 Difference]: Start difference. First operand 159 states and 215 transitions. Second operand has 8 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 06:59:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:21,349 INFO L93 Difference]: Finished difference Result 170 states and 234 transitions. [2023-11-23 06:59:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:59:21,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 171 [2023-11-23 06:59:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:21,351 INFO L225 Difference]: With dead ends: 170 [2023-11-23 06:59:21,352 INFO L226 Difference]: Without dead ends: 168 [2023-11-23 06:59:21,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:59:21,352 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 23 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:21,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1341 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:59:21,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-23 06:59:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2023-11-23 06:59:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 98 states have internal predecessors, (114), 54 states have call successors, (54), 16 states have call predecessors, (54), 18 states have return successors, (63), 53 states have call predecessors, (63), 53 states have call successors, (63) [2023-11-23 06:59:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 231 transitions. [2023-11-23 06:59:21,366 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 231 transitions. Word has length 171 [2023-11-23 06:59:21,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:21,367 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 231 transitions. [2023-11-23 06:59:21,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 06:59:21,367 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 231 transitions. [2023-11-23 06:59:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-23 06:59:21,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:21,368 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:21,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 06:59:21,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:21,583 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:21,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:21,583 INFO L85 PathProgramCache]: Analyzing trace with hash 999533888, now seen corresponding path program 1 times [2023-11-23 06:59:21,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:21,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497714447] [2023-11-23 06:59:21,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:21,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:59:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:59:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:59:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:59:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:59:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:59:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:22,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:59:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:59:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:59:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:59:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 06:59:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 06:59:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 06:59:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-11-23 06:59:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 06:59:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 06:59:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2023-11-23 06:59:22,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-11-23 06:59:22,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:22,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497714447] [2023-11-23 06:59:22,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497714447] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:22,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053258597] [2023-11-23 06:59:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:22,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:22,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:22,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:59:22,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 06:59:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,841 INFO L262 TraceCheckSpWp]: Trace formula consists of 3231 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:59:22,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:22,996 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 155 proven. 52 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-23 06:59:22,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:59:23,119 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-11-23 06:59:23,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053258597] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:59:23,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:59:23,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2023-11-23 06:59:23,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191810231] [2023-11-23 06:59:23,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:59:23,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 06:59:23,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:23,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 06:59:23,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:59:23,121 INFO L87 Difference]: Start difference. First operand 167 states and 231 transitions. Second operand has 14 states, 14 states have (on average 7.857142857142857) internal successors, (110), 11 states have internal predecessors, (110), 7 states have call successors, (64), 6 states have call predecessors, (64), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) [2023-11-23 06:59:24,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:24,797 INFO L93 Difference]: Finished difference Result 296 states and 405 transitions. [2023-11-23 06:59:24,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:59:24,797 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.857142857142857) internal successors, (110), 11 states have internal predecessors, (110), 7 states have call successors, (64), 6 states have call predecessors, (64), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) Word has length 175 [2023-11-23 06:59:24,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:24,801 INFO L225 Difference]: With dead ends: 296 [2023-11-23 06:59:24,801 INFO L226 Difference]: Without dead ends: 175 [2023-11-23 06:59:24,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 395 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:59:24,805 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 456 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:24,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [468 Valid, 353 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 827 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 06:59:24,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-23 06:59:24,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 165. [2023-11-23 06:59:24,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 96 states have internal predecessors, (112), 54 states have call successors, (54), 16 states have call predecessors, (54), 17 states have return successors, (62), 53 states have call predecessors, (62), 53 states have call successors, (62) [2023-11-23 06:59:24,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 228 transitions. [2023-11-23 06:59:24,829 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 228 transitions. Word has length 175 [2023-11-23 06:59:24,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:24,830 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 228 transitions. [2023-11-23 06:59:24,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.857142857142857) internal successors, (110), 11 states have internal predecessors, (110), 7 states have call successors, (64), 6 states have call predecessors, (64), 5 states have return successors, (61), 7 states have call predecessors, (61), 7 states have call successors, (61) [2023-11-23 06:59:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 228 transitions. [2023-11-23 06:59:24,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 06:59:24,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:24,833 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:24,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 06:59:25,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:25,048 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:25,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1765233227, now seen corresponding path program 1 times [2023-11-23 06:59:25,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577585991] [2023-11-23 06:59:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:25,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:59:25,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:59:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:59:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:59:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:59:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:59:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:59:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:59:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:26,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:59:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:59:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 06:59:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 06:59:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 06:59:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 06:59:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 06:59:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-23 06:59:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 06:59:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-11-23 06:59:26,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:26,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577585991] [2023-11-23 06:59:26,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577585991] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:26,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:59:26,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 06:59:26,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902951285] [2023-11-23 06:59:26,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:26,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:59:26,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:26,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:59:26,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:59:26,388 INFO L87 Difference]: Start difference. First operand 165 states and 228 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 06:59:27,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:27,972 INFO L93 Difference]: Finished difference Result 357 states and 513 transitions. [2023-11-23 06:59:27,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:59:27,972 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-23 06:59:27,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:27,974 INFO L225 Difference]: With dead ends: 357 [2023-11-23 06:59:27,974 INFO L226 Difference]: Without dead ends: 198 [2023-11-23 06:59:27,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:59:27,975 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 256 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:27,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 250 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 06:59:27,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-23 06:59:28,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 170. [2023-11-23 06:59:28,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 98 states have (on average 1.2142857142857142) internal successors, (119), 101 states have internal predecessors, (119), 54 states have call successors, (54), 16 states have call predecessors, (54), 17 states have return successors, (62), 53 states have call predecessors, (62), 53 states have call successors, (62) [2023-11-23 06:59:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 235 transitions. [2023-11-23 06:59:28,009 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 235 transitions. Word has length 181 [2023-11-23 06:59:28,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:28,009 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 235 transitions. [2023-11-23 06:59:28,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 5 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-23 06:59:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 235 transitions. [2023-11-23 06:59:28,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 06:59:28,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:28,012 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:28,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 06:59:28,012 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:28,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:28,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1064168649, now seen corresponding path program 1 times [2023-11-23 06:59:28,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:28,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045761220] [2023-11-23 06:59:28,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:28,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:59:29,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:59:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 06:59:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:59:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:59:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:59:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:59:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:59:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:59:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:59:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:59:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2023-11-23 06:59:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-11-23 06:59:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 06:59:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:29,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 06:59:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:30,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 06:59:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:30,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-23 06:59:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:30,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 06:59:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2023-11-23 06:59:30,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:30,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045761220] [2023-11-23 06:59:30,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045761220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:30,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449637791] [2023-11-23 06:59:30,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:30,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:30,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:30,125 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:59:30,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 06:59:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:30,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 3243 conjuncts, 106 conjunts are in the unsatisfiable core [2023-11-23 06:59:30,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:30,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 06:59:30,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:59:33,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 06:59:35,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-11-23 06:59:35,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 1 [2023-11-23 06:59:35,512 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 06:59:35,512 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 1 case distinctions, treesize of input 17 treesize of output 16 [2023-11-23 06:59:35,640 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 7 treesize of output 3 [2023-11-23 06:59:36,169 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 44 treesize of output 28 [2023-11-23 06:59:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 130 proven. 139 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-23 06:59:36,175 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:59:37,163 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:59:37,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 59 [2023-11-23 06:59:37,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 6 [2023-11-23 06:59:37,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 4118 treesize of output 4086 [2023-11-23 06:59:37,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449637791] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:37,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:59:37,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 29] total 39 [2023-11-23 06:59:37,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933206767] [2023-11-23 06:59:37,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:59:37,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-11-23 06:59:37,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:37,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-11-23 06:59:37,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2670, Unknown=16, NotChecked=0, Total=2862 [2023-11-23 06:59:37,606 INFO L87 Difference]: Start difference. First operand 170 states and 235 transitions. Second operand has 39 states, 31 states have (on average 3.806451612903226) internal successors, (118), 32 states have internal predecessors, (118), 17 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (47), 13 states have call predecessors, (47), 15 states have call successors, (47) [2023-11-23 06:59:41,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:43,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:47,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:50,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:52,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:56,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:04,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:06,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:08,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:20,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:22,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:24,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:26,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:28,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:30,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:32,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:34,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:37,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:39,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:41,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:43,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:46,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:48,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:50,392 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:52,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:54,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:56,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:58,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:00,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:02,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:05,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:07,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:09,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:11,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:11,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:11,655 INFO L93 Difference]: Finished difference Result 759 states and 1090 transitions. [2023-11-23 07:01:11,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2023-11-23 07:01:11,656 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 31 states have (on average 3.806451612903226) internal successors, (118), 32 states have internal predecessors, (118), 17 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (47), 13 states have call predecessors, (47), 15 states have call successors, (47) Word has length 181 [2023-11-23 07:01:11,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:11,659 INFO L225 Difference]: With dead ends: 759 [2023-11-23 07:01:11,659 INFO L226 Difference]: Without dead ends: 595 [2023-11-23 07:01:11,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 319 SyntacticMatches, 18 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6984 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=2664, Invalid=22121, Unknown=21, NotChecked=0, Total=24806 [2023-11-23 07:01:11,667 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 1444 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 6975 mSolverCounterSat, 682 mSolverCounterUnsat, 62 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 7719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 6975 IncrementalHoareTripleChecker+Invalid, 62 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:11,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1196 Invalid, 7719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [682 Valid, 6975 Invalid, 62 Unknown, 0 Unchecked, 75.4s Time] [2023-11-23 07:01:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-11-23 07:01:11,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 470. [2023-11-23 07:01:11,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 294 states have (on average 1.2380952380952381) internal successors, (364), 307 states have internal predecessors, (364), 129 states have call successors, (129), 35 states have call predecessors, (129), 46 states have return successors, (201), 129 states have call predecessors, (201), 127 states have call successors, (201) [2023-11-23 07:01:11,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 694 transitions. [2023-11-23 07:01:11,727 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 694 transitions. Word has length 181 [2023-11-23 07:01:11,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:11,727 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 694 transitions. [2023-11-23 07:01:11,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 31 states have (on average 3.806451612903226) internal successors, (118), 32 states have internal predecessors, (118), 17 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (47), 13 states have call predecessors, (47), 15 states have call successors, (47) [2023-11-23 07:01:11,728 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 694 transitions. [2023-11-23 07:01:11,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-23 07:01:11,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:11,731 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:11,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 07:01:11,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:11,948 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:11,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:11,949 INFO L85 PathProgramCache]: Analyzing trace with hash 172602611, now seen corresponding path program 1 times [2023-11-23 07:01:11,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:11,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044008422] [2023-11-23 07:01:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:11,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:01:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:01:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:01:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:01:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:01:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:01:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:01:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:01:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:01:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:01:12,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:01:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:01:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 07:01:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 07:01:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 07:01:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 07:01:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-23 07:01:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 07:01:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-23 07:01:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-11-23 07:01:12,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:12,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044008422] [2023-11-23 07:01:12,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044008422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:01:12,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369621318] [2023-11-23 07:01:12,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:12,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:12,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:01:12,523 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:01:12,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 07:01:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:13,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 3235 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:01:13,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:01:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2023-11-23 07:01:13,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:01:13,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369621318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:01:13,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:01:13,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-23 07:01:13,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886727616] [2023-11-23 07:01:13,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:01:13,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:01:13,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:13,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:01:13,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:01:13,122 INFO L87 Difference]: Start difference. First operand 470 states and 694 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 07:01:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:13,672 INFO L93 Difference]: Finished difference Result 827 states and 1235 transitions. [2023-11-23 07:01:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:01:13,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 185 [2023-11-23 07:01:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:13,674 INFO L225 Difference]: With dead ends: 827 [2023-11-23 07:01:13,674 INFO L226 Difference]: Without dead ends: 436 [2023-11-23 07:01:13,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:01:13,678 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 20 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:13,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 590 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:01:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-23 07:01:13,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 428. [2023-11-23 07:01:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 274 states have (on average 1.2262773722627738) internal successors, (336), 286 states have internal predecessors, (336), 111 states have call successors, (111), 34 states have call predecessors, (111), 42 states have return successors, (152), 109 states have call predecessors, (152), 109 states have call successors, (152) [2023-11-23 07:01:13,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 599 transitions. [2023-11-23 07:01:13,712 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 599 transitions. Word has length 185 [2023-11-23 07:01:13,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:13,715 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 599 transitions. [2023-11-23 07:01:13,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 07:01:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 599 transitions. [2023-11-23 07:01:13,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-23 07:01:13,718 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:13,718 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:13,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 07:01:13,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:13,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:13,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:13,934 INFO L85 PathProgramCache]: Analyzing trace with hash 56373695, now seen corresponding path program 2 times [2023-11-23 07:01:13,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:13,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542732530] [2023-11-23 07:01:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:13,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:01:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:01:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:15,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:01:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:01:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:01:15,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:01:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:01:15,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:15,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:15,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:01:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:01:15,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:01:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:01:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:01:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 07:01:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 07:01:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 07:01:15,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 07:01:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-23 07:01:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-23 07:01:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 07:01:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:15,760 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 53 proven. 46 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-23 07:01:15,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:15,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542732530] [2023-11-23 07:01:15,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542732530] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:01:15,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548187483] [2023-11-23 07:01:15,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:01:15,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:15,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:01:15,762 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:01:15,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 07:01:16,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:01:16,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:01:16,541 INFO L262 TraceCheckSpWp]: Trace formula consists of 3259 conjuncts, 127 conjunts are in the unsatisfiable core [2023-11-23 07:01:16,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:01:16,907 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 71 treesize of output 59 [2023-11-23 07:01:16,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2023-11-23 07:01:16,914 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 71 treesize of output 59 [2023-11-23 07:01:16,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2023-11-23 07:01:16,969 INFO L349 Elim1Store]: treesize reduction 26, result has 40.9 percent of original size [2023-11-23 07:01:16,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 73 treesize of output 83 [2023-11-23 07:01:16,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 9 [2023-11-23 07:01:17,049 INFO L349 Elim1Store]: treesize reduction 106, result has 17.8 percent of original size [2023-11-23 07:01:17,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 71 treesize of output 56 [2023-11-23 07:01:17,704 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 39 treesize of output 27 [2023-11-23 07:01:17,706 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 33 treesize of output 21 [2023-11-23 07:01:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 41 proven. 232 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-23 07:01:19,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:01:20,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548187483] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:01:20,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:01:20,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27] total 42 [2023-11-23 07:01:20,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161772165] [2023-11-23 07:01:20,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:01:20,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-23 07:01:20,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:20,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-23 07:01:20,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=3405, Unknown=0, NotChecked=0, Total=3660 [2023-11-23 07:01:20,348 INFO L87 Difference]: Start difference. First operand 428 states and 599 transitions. Second operand has 42 states, 38 states have (on average 3.8947368421052633) internal successors, (148), 33 states have internal predecessors, (148), 10 states have call successors, (49), 11 states have call predecessors, (49), 8 states have return successors, (46), 8 states have call predecessors, (46), 9 states have call successors, (46) [2023-11-23 07:01:47,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:47,492 INFO L93 Difference]: Finished difference Result 1502 states and 2132 transitions. [2023-11-23 07:01:47,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-23 07:01:47,492 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 3.8947368421052633) internal successors, (148), 33 states have internal predecessors, (148), 10 states have call successors, (49), 11 states have call predecessors, (49), 8 states have return successors, (46), 8 states have call predecessors, (46), 9 states have call successors, (46) Word has length 193 [2023-11-23 07:01:47,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:47,498 INFO L225 Difference]: With dead ends: 1502 [2023-11-23 07:01:47,498 INFO L226 Difference]: Without dead ends: 1225 [2023-11-23 07:01:47,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 423 GetRequests, 263 SyntacticMatches, 8 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6374 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=2478, Invalid=21080, Unknown=4, NotChecked=0, Total=23562 [2023-11-23 07:01:47,506 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 1536 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 8858 mSolverCounterSat, 1284 mSolverCounterUnsat, 482 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 10624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1284 IncrementalHoareTripleChecker+Valid, 8858 IncrementalHoareTripleChecker+Invalid, 482 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:47,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 1140 Invalid, 10624 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1284 Valid, 8858 Invalid, 482 Unknown, 0 Unchecked, 14.2s Time] [2023-11-23 07:01:47,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2023-11-23 07:01:47,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1041. [2023-11-23 07:01:47,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 693 states have (on average 1.230880230880231) internal successors, (853), 714 states have internal predecessors, (853), 259 states have call successors, (259), 73 states have call predecessors, (259), 88 states have return successors, (360), 259 states have call predecessors, (360), 253 states have call successors, (360) [2023-11-23 07:01:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1472 transitions. [2023-11-23 07:01:47,618 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1472 transitions. Word has length 193 [2023-11-23 07:01:47,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:47,619 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1472 transitions. [2023-11-23 07:01:47,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 3.8947368421052633) internal successors, (148), 33 states have internal predecessors, (148), 10 states have call successors, (49), 11 states have call predecessors, (49), 8 states have return successors, (46), 8 states have call predecessors, (46), 9 states have call successors, (46) [2023-11-23 07:01:47,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1472 transitions. [2023-11-23 07:01:47,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2023-11-23 07:01:47,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:47,629 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:47,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 07:01:47,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 07:01:47,849 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:47,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 370112639, now seen corresponding path program 3 times [2023-11-23 07:01:47,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:47,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094264850] [2023-11-23 07:01:47,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:47,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:01:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:01:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:51,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:01:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:01:51,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:01:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:01:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:01:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:01:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:01:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:01:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:01:51,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:01:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 07:01:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 07:01:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2023-11-23 07:01:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 07:01:52,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-23 07:01:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-23 07:01:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 07:01:52,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,281 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 37 proven. 68 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-11-23 07:01:52,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:52,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094264850] [2023-11-23 07:01:52,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094264850] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:01:52,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830138857] [2023-11-23 07:01:52,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 07:01:52,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:52,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:01:52,283 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:01:52,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 07:01:53,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 07:01:53,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:01:53,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 07:01:53,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:01:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 167 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-23 07:01:53,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:01:53,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830138857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:01:53,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:01:53,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [29] total 36 [2023-11-23 07:01:53,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294162034] [2023-11-23 07:01:53,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:01:53,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:01:53,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:53,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:01:53,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1154, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 07:01:53,687 INFO L87 Difference]: Start difference. First operand 1041 states and 1472 transitions. Second operand has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 07:01:54,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:54,725 INFO L93 Difference]: Finished difference Result 2142 states and 3075 transitions. [2023-11-23 07:01:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:01:54,726 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 193 [2023-11-23 07:01:54,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:54,731 INFO L225 Difference]: With dead ends: 2142 [2023-11-23 07:01:54,732 INFO L226 Difference]: Without dead ends: 1109 [2023-11-23 07:01:54,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=1362, Unknown=0, NotChecked=0, Total=1482 [2023-11-23 07:01:54,737 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 13 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:54,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1452 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 07:01:54,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2023-11-23 07:01:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1046. [2023-11-23 07:01:54,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 697 states have (on average 1.2295552367288378) internal successors, (857), 719 states have internal predecessors, (857), 259 states have call successors, (259), 73 states have call predecessors, (259), 89 states have return successors, (361), 259 states have call predecessors, (361), 253 states have call successors, (361) [2023-11-23 07:01:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1477 transitions. [2023-11-23 07:01:54,843 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1477 transitions. Word has length 193 [2023-11-23 07:01:54,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:54,843 INFO L495 AbstractCegarLoop]: Abstraction has 1046 states and 1477 transitions. [2023-11-23 07:01:54,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2023-11-23 07:01:54,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1477 transitions. [2023-11-23 07:01:54,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-23 07:01:54,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:54,847 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:54,864 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 07:01:55,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:55,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:55,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:55,066 INFO L85 PathProgramCache]: Analyzing trace with hash -756165894, now seen corresponding path program 1 times [2023-11-23 07:01:55,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:55,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158362754] [2023-11-23 07:01:55,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:55,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:01:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:01:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:55,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:55,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:01:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:01:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:01:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:01:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:01:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:55,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 07:01:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 07:01:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:01:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:01:55,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:01:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 07:01:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 07:01:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 07:01:55,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 07:01:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 07:01:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 07:01:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 07:01:55,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:55,537 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2023-11-23 07:01:55,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:55,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158362754] [2023-11-23 07:01:55,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158362754] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:01:55,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86714199] [2023-11-23 07:01:55,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:55,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:55,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:01:55,539 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:01:55,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 07:01:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:56,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 3254 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:01:56,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:01:56,211 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-11-23 07:01:56,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:01:56,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [86714199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:01:56,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:01:56,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-23 07:01:56,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200931769] [2023-11-23 07:01:56,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:01:56,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:01:56,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:56,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:01:56,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:01:56,213 INFO L87 Difference]: Start difference. First operand 1046 states and 1477 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 07:01:56,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:56,539 INFO L93 Difference]: Finished difference Result 2216 states and 3201 transitions. [2023-11-23 07:01:56,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:01:56,539 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 195 [2023-11-23 07:01:56,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:56,545 INFO L225 Difference]: With dead ends: 2216 [2023-11-23 07:01:56,545 INFO L226 Difference]: Without dead ends: 1178 [2023-11-23 07:01:56,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:01:56,550 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 9 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:56,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 586 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:01:56,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2023-11-23 07:01:56,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1080. [2023-11-23 07:01:56,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 731 states have (on average 1.2188782489740082) internal successors, (891), 753 states have internal predecessors, (891), 259 states have call successors, (259), 73 states have call predecessors, (259), 89 states have return successors, (361), 259 states have call predecessors, (361), 253 states have call successors, (361) [2023-11-23 07:01:56,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1511 transitions. [2023-11-23 07:01:56,655 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1511 transitions. Word has length 195 [2023-11-23 07:01:56,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:56,655 INFO L495 AbstractCegarLoop]: Abstraction has 1080 states and 1511 transitions. [2023-11-23 07:01:56,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 07:01:56,656 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1511 transitions. [2023-11-23 07:01:56,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-23 07:01:56,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:56,658 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:56,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 07:01:56,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 07:01:56,876 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:56,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:56,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1146811190, now seen corresponding path program 1 times [2023-11-23 07:01:56,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:56,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261957317] [2023-11-23 07:01:56,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:56,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:01:57,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:01:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:57,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:01:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:01:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:01:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:01:57,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:01:57,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:57,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 07:01:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 07:01:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:01:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:01:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:01:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 07:01:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 07:01:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 07:01:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 07:01:57,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 07:01:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 07:01:57,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 07:01:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:57,465 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2023-11-23 07:01:57,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:57,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261957317] [2023-11-23 07:01:57,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261957317] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:01:57,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815105654] [2023-11-23 07:01:57,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:57,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:57,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:01:57,467 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:01:57,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 07:01:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:58,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 3256 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:01:58,087 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:01:58,099 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-11-23 07:01:58,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:01:58,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815105654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:01:58,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:01:58,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-23 07:01:58,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242777959] [2023-11-23 07:01:58,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:01:58,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:01:58,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:58,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:01:58,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:01:58,104 INFO L87 Difference]: Start difference. First operand 1080 states and 1511 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 07:01:58,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:58,428 INFO L93 Difference]: Finished difference Result 2152 states and 3094 transitions. [2023-11-23 07:01:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:01:58,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 195 [2023-11-23 07:01:58,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:58,433 INFO L225 Difference]: With dead ends: 2152 [2023-11-23 07:01:58,442 INFO L226 Difference]: Without dead ends: 1086 [2023-11-23 07:01:58,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:01:58,450 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 26 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:58,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 597 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:01:58,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2023-11-23 07:01:58,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1041. [2023-11-23 07:01:58,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 698 states have (on average 1.191977077363897) internal successors, (832), 719 states have internal predecessors, (832), 256 states have call successors, (256), 71 states have call predecessors, (256), 86 states have return successors, (356), 256 states have call predecessors, (356), 250 states have call successors, (356) [2023-11-23 07:01:58,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1444 transitions. [2023-11-23 07:01:58,640 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1444 transitions. Word has length 195 [2023-11-23 07:01:58,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:58,641 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1444 transitions. [2023-11-23 07:01:58,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 07:01:58,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1444 transitions. [2023-11-23 07:01:58,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-23 07:01:58,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:58,644 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:58,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 07:01:58,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 07:01:58,860 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:58,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:58,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1717082996, now seen corresponding path program 2 times [2023-11-23 07:01:58,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:58,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357695221] [2023-11-23 07:01:58,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:58,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:59,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:01:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:01:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:01:59,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:01:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:01:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:01:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:01:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:59,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 07:01:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 07:01:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:00,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:02:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:02:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:00,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:02:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:00,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 07:02:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 07:02:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:00,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 07:02:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:00,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 07:02:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:00,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2023-11-23 07:02:00,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:00,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 07:02:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:00,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2023-11-23 07:02:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 25 proven. 20 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2023-11-23 07:02:00,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:02:00,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357695221] [2023-11-23 07:02:00,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357695221] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:02:00,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297150411] [2023-11-23 07:02:00,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:02:00,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:02:00,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:02:00,155 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:02:00,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 07:02:00,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:02:00,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:02:00,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 3251 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-23 07:02:00,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:02:00,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:02:01,107 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 36 treesize of output 24 [2023-11-23 07:02:01,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 1 [2023-11-23 07:02:01,436 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 279 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 07:02:01,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:02:01,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297150411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:02:01,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:02:01,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [12] total 24 [2023-11-23 07:02:01,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795298328] [2023-11-23 07:02:01,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:02:01,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 07:02:01,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:02:01,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 07:02:01,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2023-11-23 07:02:01,438 INFO L87 Difference]: Start difference. First operand 1041 states and 1444 transitions. Second operand has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 5 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2023-11-23 07:02:03,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:02:06,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:02:08,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:02:11,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:02:13,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:02:15,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:02:17,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:02:18,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:02:18,494 INFO L93 Difference]: Finished difference Result 2062 states and 2809 transitions. [2023-11-23 07:02:18,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-23 07:02:18,495 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 5 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) Word has length 195 [2023-11-23 07:02:18,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:02:18,501 INFO L225 Difference]: With dead ends: 2062 [2023-11-23 07:02:18,501 INFO L226 Difference]: Without dead ends: 1382 [2023-11-23 07:02:18,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 231 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 07:02:18,506 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 242 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 107 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:02:18,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 688 Invalid, 1731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1616 Invalid, 8 Unknown, 0 Unchecked, 16.7s Time] [2023-11-23 07:02:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1382 states. [2023-11-23 07:02:18,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1382 to 1358. [2023-11-23 07:02:18,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 934 states have (on average 1.1991434689507494) internal successors, (1120), 961 states have internal predecessors, (1120), 313 states have call successors, (313), 92 states have call predecessors, (313), 110 states have return successors, (399), 313 states have call predecessors, (399), 304 states have call successors, (399) [2023-11-23 07:02:18,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1832 transitions. [2023-11-23 07:02:18,627 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1832 transitions. Word has length 195 [2023-11-23 07:02:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:02:18,627 INFO L495 AbstractCegarLoop]: Abstraction has 1358 states and 1832 transitions. [2023-11-23 07:02:18,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.833333333333333) internal successors, (94), 13 states have internal predecessors, (94), 5 states have call successors, (27), 4 states have call predecessors, (27), 7 states have return successors, (25), 6 states have call predecessors, (25), 5 states have call successors, (25) [2023-11-23 07:02:18,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1832 transitions. [2023-11-23 07:02:18,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-23 07:02:18,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:02:18,630 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:02:18,662 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-23 07:02:18,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 07:02:18,864 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:02:18,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:02:18,864 INFO L85 PathProgramCache]: Analyzing trace with hash 500749431, now seen corresponding path program 1 times [2023-11-23 07:02:18,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:02:18,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503993688] [2023-11-23 07:02:18,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:02:18,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:02:19,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 07:02:19,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 07:02:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:02:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 07:02:19,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:02:19,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:02:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 07:02:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:02:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:02:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 07:02:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:02:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 07:02:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:02:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 07:02:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 07:02:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 07:02:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 07:02:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 07:02:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-23 07:02:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 07:02:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-23 07:02:19,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-11-23 07:02:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 19 proven. 30 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2023-11-23 07:02:19,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:02:19,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503993688] [2023-11-23 07:02:19,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503993688] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:02:19,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57708048] [2023-11-23 07:02:19,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:02:19,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:02:19,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:02:19,992 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:02:19,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 07:02:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:20,629 INFO L262 TraceCheckSpWp]: Trace formula consists of 3308 conjuncts, 106 conjunts are in the unsatisfiable core [2023-11-23 07:02:20,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:02:20,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 07:02:20,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:02:23,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:02:25,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-11-23 07:02:25,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 29 [2023-11-23 07:02:25,441 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 1 [2023-11-23 07:02:25,468 INFO L349 Elim1Store]: treesize reduction 26, result has 42.2 percent of original size [2023-11-23 07:02:25,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 65 [2023-11-23 07:02:25,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2023-11-23 07:02:25,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 15 [2023-11-23 07:02:25,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2023-11-23 07:02:25,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 12 [2023-11-23 07:02:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 223 proven. 127 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 07:02:52,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:02:52,649 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 358 treesize of output 346 [2023-11-23 07:02:52,665 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 07:02:52,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 38 [2023-11-23 07:02:59,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57708048] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:02:59,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:02:59,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 27] total 37 [2023-11-23 07:02:59,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894004418] [2023-11-23 07:02:59,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:02:59,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-23 07:02:59,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:02:59,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-23 07:02:59,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1913, Unknown=11, NotChecked=0, Total=2070 [2023-11-23 07:02:59,029 INFO L87 Difference]: Start difference. First operand 1358 states and 1832 transitions. Second operand has 37 states, 29 states have (on average 5.206896551724138) internal successors, (151), 29 states have internal predecessors, (151), 13 states have call successors, (52), 10 states have call predecessors, (52), 12 states have return successors, (49), 12 states have call predecessors, (49), 12 states have call successors, (49) [2023-11-23 07:03:01,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:03:04,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:03:09,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:03:12,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:03:14,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:03:16,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:03:18,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Killed by 15