./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_init_copy_from_cursor_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_init_copy_from_cursor_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4de10993869e21f48bb81ae95b5cdb54403a1e14d61aac1da11f58576220ef55 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:53:57,414 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:53:57,479 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:53:57,483 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:53:57,484 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:53:57,507 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:53:57,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:53:57,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:53:57,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:53:57,511 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:53:57,511 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:53:57,511 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:53:57,512 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:53:57,513 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:53:57,513 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:53:57,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:53:57,513 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:53:57,514 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:53:57,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:53:57,514 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:53:57,514 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:53:57,514 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:53:57,515 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:53:57,515 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:53:57,515 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:53:57,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:53:57,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:53:57,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:53:57,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:53:57,516 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:53:57,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:53:57,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:53:57,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:53:57,518 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:53:57,518 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:53:57,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:53:57,518 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:53:57,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:53:57,519 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:53:57,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4de10993869e21f48bb81ae95b5cdb54403a1e14d61aac1da11f58576220ef55 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:53:57,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:53:57,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:53:57,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:53:57,731 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:53:57,731 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:53:57,732 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_init_copy_from_cursor_harness.i [2023-11-23 06:53:58,751 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:53:59,115 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:53:59,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_init_copy_from_cursor_harness.i [2023-11-23 06:53:59,151 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51a5060f4/47c3d9a0e44e4dc9b7673daba066b599/FLAG59fe980f8 [2023-11-23 06:53:59,163 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51a5060f4/47c3d9a0e44e4dc9b7673daba066b599 [2023-11-23 06:53:59,165 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:53:59,166 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:53:59,169 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:53:59,169 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:53:59,172 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:53:59,173 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:53:59" (1/1) ... [2023-11-23 06:53:59,173 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea46a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:53:59, skipping insertion in model container [2023-11-23 06:53:59,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:53:59" (1/1) ... [2023-11-23 06:53:59,271 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:53:59,476 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_init_copy_from_cursor_harness.i[4508,4521] [2023-11-23 06:53:59,483 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_init_copy_from_cursor_harness.i[4568,4581] [2023-11-23 06:53:59,971 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:53:59,979 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:53:59,979 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:53:59,980 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:53:59,983 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:53:59,990 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:53:59,997 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,003 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,004 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,253 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:54:00,254 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:54:00,256 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:54:00,256 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:54:00,258 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:54:00,258 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:54:00,259 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:54:00,259 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:54:00,260 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:54:00,260 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:54:00,454 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,454 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,506 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:54:00,567 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:54:00,584 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_init_copy_from_cursor_harness.i[4508,4521] [2023-11-23 06:54:00,585 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_init_copy_from_cursor_harness.i[4568,4581] [2023-11-23 06:54:00,616 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,618 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,618 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,619 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,619 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,624 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,624 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,625 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,625 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,657 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:54:00,658 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:54:00,658 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:54:00,659 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:54:00,660 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:54:00,662 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:54:00,662 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:54:00,663 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:54:00,663 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:54:00,663 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:54:00,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-23 06:54:00,727 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,728 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:54:00,737 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-23 06:54:00,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:54:00,955 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,955 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,956 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,956 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,956 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,956 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,956 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,957 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,957 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,957 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,957 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,958 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,958 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,958 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,958 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,958 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,959 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,959 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:54:00,965 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:54:00,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00 WrapperNode [2023-11-23 06:54:00,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:54:00,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:54:00,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:54:00,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:54:00,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (1/1) ... [2023-11-23 06:54:01,052 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (1/1) ... [2023-11-23 06:54:01,115 INFO L138 Inliner]: procedures = 690, calls = 2617, calls flagged for inlining = 61, calls inlined = 8, statements flattened = 896 [2023-11-23 06:54:01,115 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:54:01,116 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:54:01,116 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:54:01,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:54:01,125 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (1/1) ... [2023-11-23 06:54:01,126 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (1/1) ... [2023-11-23 06:54:01,135 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (1/1) ... [2023-11-23 06:54:01,237 INFO L188 MemorySlicer]: Split 550 memory accesses to 7 slices as follows [2, 21, 245, 256, 23, 0, 3]. 47 percent of accesses are in the largest equivalence class. The 502 initializations are split as follows [2, 0, 241, 256, 0, 0, 3]. The 9 writes are split as follows [0, 5, 1, 0, 3, 0, 0]. [2023-11-23 06:54:01,238 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (1/1) ... [2023-11-23 06:54:01,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (1/1) ... [2023-11-23 06:54:01,259 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (1/1) ... [2023-11-23 06:54:01,263 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (1/1) ... [2023-11-23 06:54:01,268 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (1/1) ... [2023-11-23 06:54:01,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (1/1) ... [2023-11-23 06:54:01,281 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:54:01,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:54:01,282 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:54:01,282 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:54:01,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (1/1) ... [2023-11-23 06:54:01,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:54:01,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:54:01,307 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 06:54:01,328 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 06:54:01,361 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 06:54:01,362 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 06:54:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 06:54:01,362 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 06:54:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:54:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:54:01,362 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:54:01,362 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 06:54:01,362 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 06:54:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:54:01,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:54:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:54:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:54:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:54:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:54:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 06:54:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 06:54:01,364 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 06:54:01,364 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:54:01,365 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:54:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:54:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:54:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:54:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:54:01,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:54:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:54:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:54:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:54:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 06:54:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 06:54:01,366 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 06:54:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:54:01,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:54:01,366 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:54:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:54:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 06:54:01,367 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 06:54:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-23 06:54:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-23 06:54:01,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-23 06:54:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-23 06:54:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2023-11-23 06:54:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#5 [2023-11-23 06:54:01,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#6 [2023-11-23 06:54:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-23 06:54:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-23 06:54:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-23 06:54:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-23 06:54:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2023-11-23 06:54:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#5 [2023-11-23 06:54:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#6 [2023-11-23 06:54:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:54:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:54:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 06:54:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 06:54:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-23 06:54:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-23 06:54:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:54:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:54:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:54:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:54:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:54:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:54:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:54:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 06:54:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:54:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:54:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:54:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:54:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:54:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:54:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 06:54:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:54:01,372 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:54:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 06:54:01,373 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 06:54:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:54:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:54:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:54:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:54:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:54:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:54:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 06:54:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:54:01,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:54:01,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:54:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:54:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:54:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:54:01,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 06:54:01,655 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:54:01,657 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:54:02,351 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:54:02,520 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:54:02,540 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-23 06:54:02,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:54:02 BoogieIcfgContainer [2023-11-23 06:54:02,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:54:02,542 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:54:02,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:54:02,545 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:54:02,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:53:59" (1/3) ... [2023-11-23 06:54:02,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc495b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:54:02, skipping insertion in model container [2023-11-23 06:54:02,545 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:54:00" (2/3) ... [2023-11-23 06:54:02,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc495b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:54:02, skipping insertion in model container [2023-11-23 06:54:02,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:54:02" (3/3) ... [2023-11-23 06:54:02,547 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_init_copy_from_cursor_harness.i [2023-11-23 06:54:02,560 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:54:02,560 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:54:02,594 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:54:02,598 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;@10d38c92, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:54:02,599 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:54:02,602 INFO L276 IsEmpty]: Start isEmpty. Operand has 150 states, 96 states have (on average 1.3229166666666667) internal successors, (127), 96 states have internal predecessors, (127), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2023-11-23 06:54:02,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-23 06:54:02,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:02,610 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:54:02,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:02,614 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:02,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1045168076, now seen corresponding path program 1 times [2023-11-23 06:54:02,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:02,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703713016] [2023-11-23 06:54:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:02,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:03,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:03,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:03,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 06:54:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:03,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-23 06:54:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:03,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:54:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:03,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 06:54:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:03,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:54:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 06:54:03,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:03,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703713016] [2023-11-23 06:54:03,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703713016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:03,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:54:03,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:54:03,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617244445] [2023-11-23 06:54:03,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:03,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:54:03,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:03,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:54:03,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:54:03,586 INFO L87 Difference]: Start difference. First operand has 150 states, 96 states have (on average 1.3229166666666667) internal successors, (127), 96 states have internal predecessors, (127), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 06:54:04,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:04,023 INFO L93 Difference]: Finished difference Result 300 states and 436 transitions. [2023-11-23 06:54:04,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:54:04,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2023-11-23 06:54:04,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:04,032 INFO L225 Difference]: With dead ends: 300 [2023-11-23 06:54:04,033 INFO L226 Difference]: Without dead ends: 148 [2023-11-23 06:54:04,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:54:04,049 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 51 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:04,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 611 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:54:04,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-23 06:54:04,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-11-23 06:54:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 92 states have (on average 1.25) internal successors, (115), 94 states have internal predecessors, (115), 39 states have call successors, (39), 15 states have call predecessors, (39), 16 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2023-11-23 06:54:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 193 transitions. [2023-11-23 06:54:04,085 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 193 transitions. Word has length 54 [2023-11-23 06:54:04,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:04,086 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 193 transitions. [2023-11-23 06:54:04,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 06:54:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 193 transitions. [2023-11-23 06:54:04,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 06:54:04,088 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:04,088 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:54:04,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:54:04,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:04,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:04,089 INFO L85 PathProgramCache]: Analyzing trace with hash 943652123, now seen corresponding path program 1 times [2023-11-23 06:54:04,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:04,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080399887] [2023-11-23 06:54:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:04,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:04,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:04,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:04,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:04,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:04,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:04,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:04,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:04,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:04,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:54:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:54:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:04,546 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 06:54:04,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:04,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080399887] [2023-11-23 06:54:04,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080399887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:04,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:54:04,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 06:54:04,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335738057] [2023-11-23 06:54:04,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:04,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:54:04,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:04,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:54:04,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:54:04,549 INFO L87 Difference]: Start difference. First operand 148 states and 193 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 06:54:05,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:05,430 INFO L93 Difference]: Finished difference Result 282 states and 361 transitions. [2023-11-23 06:54:05,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:54:05,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 60 [2023-11-23 06:54:05,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:05,433 INFO L225 Difference]: With dead ends: 282 [2023-11-23 06:54:05,433 INFO L226 Difference]: Without dead ends: 148 [2023-11-23 06:54:05,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:54:05,434 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 111 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:05,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 239 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:54:05,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-23 06:54:05,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2023-11-23 06:54:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 92 states have internal predecessors, (113), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-23 06:54:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 190 transitions. [2023-11-23 06:54:05,445 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 190 transitions. Word has length 60 [2023-11-23 06:54:05,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:05,445 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 190 transitions. [2023-11-23 06:54:05,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 06:54:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 190 transitions. [2023-11-23 06:54:05,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-23 06:54:05,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:05,447 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:54:05,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 06:54:05,447 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:05,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:05,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1507231018, now seen corresponding path program 1 times [2023-11-23 06:54:05,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:05,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41959440] [2023-11-23 06:54:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:05,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:05,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:05,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:05,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:05,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:05,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:05,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:05,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:54:05,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:05,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 06:54:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:05,825 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:54:05,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:05,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41959440] [2023-11-23 06:54:05,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41959440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:05,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:54:05,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 06:54:05,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128097326] [2023-11-23 06:54:05,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:05,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:54:05,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:05,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:54:05,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:54:05,828 INFO L87 Difference]: Start difference. First operand 146 states and 190 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 06:54:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:06,405 INFO L93 Difference]: Finished difference Result 193 states and 247 transitions. [2023-11-23 06:54:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:54:06,405 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 62 [2023-11-23 06:54:06,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:06,407 INFO L225 Difference]: With dead ends: 193 [2023-11-23 06:54:06,407 INFO L226 Difference]: Without dead ends: 150 [2023-11-23 06:54:06,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:54:06,408 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 128 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:06,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 230 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:54:06,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-23 06:54:06,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2023-11-23 06:54:06,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 92 states have (on average 1.2391304347826086) internal successors, (114), 94 states have internal predecessors, (114), 39 states have call successors, (39), 15 states have call predecessors, (39), 16 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2023-11-23 06:54:06,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 192 transitions. [2023-11-23 06:54:06,455 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 192 transitions. Word has length 62 [2023-11-23 06:54:06,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:06,456 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 192 transitions. [2023-11-23 06:54:06,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 06:54:06,456 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 192 transitions. [2023-11-23 06:54:06,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 06:54:06,457 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:06,457 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:54:06,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 06:54:06,457 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:06,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:06,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1640125045, now seen corresponding path program 1 times [2023-11-23 06:54:06,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:06,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748548220] [2023-11-23 06:54:06,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:06,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:06,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:06,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:06,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:06,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:06,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:06,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:06,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:06,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:06,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:54:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 06:54:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:54:06,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:06,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748548220] [2023-11-23 06:54:06,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748548220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:06,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:54:06,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:54:06,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771918812] [2023-11-23 06:54:06,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:06,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:54:06,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:06,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:54:06,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:54:06,744 INFO L87 Difference]: Start difference. First operand 148 states and 192 transitions. Second operand has 7 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 06:54:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:07,595 INFO L93 Difference]: Finished difference Result 214 states and 273 transitions. [2023-11-23 06:54:07,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:54:07,596 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 68 [2023-11-23 06:54:07,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:07,597 INFO L225 Difference]: With dead ends: 214 [2023-11-23 06:54:07,598 INFO L226 Difference]: Without dead ends: 148 [2023-11-23 06:54:07,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:54:07,599 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 82 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:07,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 423 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:54:07,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-23 06:54:07,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2023-11-23 06:54:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 91 states have (on average 1.2197802197802199) internal successors, (111), 93 states have internal predecessors, (111), 38 states have call successors, (38), 15 states have call predecessors, (38), 16 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2023-11-23 06:54:07,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 187 transitions. [2023-11-23 06:54:07,609 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 187 transitions. Word has length 68 [2023-11-23 06:54:07,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:07,609 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 187 transitions. [2023-11-23 06:54:07,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 06:54:07,610 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 187 transitions. [2023-11-23 06:54:07,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 06:54:07,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:07,611 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:54:07,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 06:54:07,611 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:07,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:07,611 INFO L85 PathProgramCache]: Analyzing trace with hash -449863206, now seen corresponding path program 1 times [2023-11-23 06:54:07,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:07,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213122750] [2023-11-23 06:54:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:07,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:07,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:07,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:07,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:08,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:08,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:08,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:08,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:08,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:54:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:08,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:54:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:54:08,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:08,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213122750] [2023-11-23 06:54:08,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213122750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:08,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:54:08,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:54:08,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232356474] [2023-11-23 06:54:08,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:08,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:54:08,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:08,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:54:08,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:54:08,081 INFO L87 Difference]: Start difference. First operand 146 states and 187 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 06:54:09,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:09,273 INFO L93 Difference]: Finished difference Result 214 states and 272 transitions. [2023-11-23 06:54:09,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:54:09,274 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 69 [2023-11-23 06:54:09,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:09,275 INFO L225 Difference]: With dead ends: 214 [2023-11-23 06:54:09,275 INFO L226 Difference]: Without dead ends: 146 [2023-11-23 06:54:09,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:54:09,276 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 138 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:09,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 296 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:54:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-23 06:54:09,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2023-11-23 06:54:09,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 90 states have (on average 1.211111111111111) internal successors, (109), 91 states have internal predecessors, (109), 38 states have call successors, (38), 15 states have call predecessors, (38), 15 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 06:54:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2023-11-23 06:54:09,284 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 69 [2023-11-23 06:54:09,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:09,285 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2023-11-23 06:54:09,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 06:54:09,285 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2023-11-23 06:54:09,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 06:54:09,286 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:09,286 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:54:09,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 06:54:09,286 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:09,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:09,287 INFO L85 PathProgramCache]: Analyzing trace with hash 199352719, now seen corresponding path program 1 times [2023-11-23 06:54:09,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:09,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276234558] [2023-11-23 06:54:09,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:09,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:09,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:09,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:09,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:09,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:09,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:09,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:09,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:09,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:09,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:09,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:09,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:54:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:54:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:54:09,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:09,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276234558] [2023-11-23 06:54:09,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276234558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:09,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:54:09,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:54:09,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421301843] [2023-11-23 06:54:09,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:09,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:54:09,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:09,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:54:09,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:54:09,915 INFO L87 Difference]: Start difference. First operand 144 states and 184 transitions. Second operand has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 06:54:11,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:11,230 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2023-11-23 06:54:11,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:54:11,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 75 [2023-11-23 06:54:11,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:11,231 INFO L225 Difference]: With dead ends: 157 [2023-11-23 06:54:11,231 INFO L226 Difference]: Without dead ends: 155 [2023-11-23 06:54:11,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:54:11,232 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 110 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:11,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 517 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 06:54:11,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-23 06:54:11,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 152. [2023-11-23 06:54:11,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 95 states have (on average 1.2) internal successors, (114), 97 states have internal predecessors, (114), 39 states have call successors, (39), 16 states have call predecessors, (39), 17 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 06:54:11,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 193 transitions. [2023-11-23 06:54:11,241 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 193 transitions. Word has length 75 [2023-11-23 06:54:11,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:11,241 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 193 transitions. [2023-11-23 06:54:11,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.714285714285714) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 06:54:11,242 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 193 transitions. [2023-11-23 06:54:11,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 06:54:11,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:11,243 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:54:11,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 06:54:11,244 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:11,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:11,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1898036231, now seen corresponding path program 1 times [2023-11-23 06:54:11,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:11,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775827806] [2023-11-23 06:54:11,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:11,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:11,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:11,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:11,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:11,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:11,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:11,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:11,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:11,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:11,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:11,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:54:11,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:11,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:54:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:54:11,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:11,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775827806] [2023-11-23 06:54:11,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775827806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:11,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:54:11,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:54:11,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326386399] [2023-11-23 06:54:11,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:11,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:54:11,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:11,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:54:11,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:54:11,754 INFO L87 Difference]: Start difference. First operand 152 states and 193 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 06:54:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:12,426 INFO L93 Difference]: Finished difference Result 284 states and 356 transitions. [2023-11-23 06:54:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:54:12,427 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2023-11-23 06:54:12,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:12,428 INFO L225 Difference]: With dead ends: 284 [2023-11-23 06:54:12,428 INFO L226 Difference]: Without dead ends: 153 [2023-11-23 06:54:12,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:54:12,429 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 83 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:12,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 252 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:54:12,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-23 06:54:12,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2023-11-23 06:54:12,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 96 states have (on average 1.1979166666666667) internal successors, (115), 98 states have internal predecessors, (115), 39 states have call successors, (39), 16 states have call predecessors, (39), 17 states have return successors, (40), 38 states have call predecessors, (40), 38 states have call successors, (40) [2023-11-23 06:54:12,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 194 transitions. [2023-11-23 06:54:12,438 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 194 transitions. Word has length 79 [2023-11-23 06:54:12,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:12,439 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 194 transitions. [2023-11-23 06:54:12,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 06:54:12,439 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 194 transitions. [2023-11-23 06:54:12,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 06:54:12,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:12,440 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:54:12,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 06:54:12,440 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:12,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:12,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1454795940, now seen corresponding path program 1 times [2023-11-23 06:54:12,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:12,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607799448] [2023-11-23 06:54:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:12,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:12,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:12,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:12,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:12,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:12,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:12,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:12,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:12,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:12,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:12,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:12,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:12,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:54:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:13,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:54:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:13,029 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:54:13,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:13,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607799448] [2023-11-23 06:54:13,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607799448] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:54:13,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960788593] [2023-11-23 06:54:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:13,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:54:13,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:54:13,033 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 06:54:13,039 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 06:54:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:13,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 2619 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-23 06:54:13,525 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:54:13,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 06:54:13,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 06:54:13,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 11 [2023-11-23 06:54:13,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 11 [2023-11-23 06:54:14,068 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 06:54:14,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:54:14,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960788593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:14,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:54:14,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2023-11-23 06:54:14,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676156663] [2023-11-23 06:54:14,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:14,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:54:14,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:14,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:54:14,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:54:14,071 INFO L87 Difference]: Start difference. First operand 153 states and 194 transitions. Second operand has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 06:54:15,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:15,859 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2023-11-23 06:54:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 06:54:15,859 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 80 [2023-11-23 06:54:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:15,861 INFO L225 Difference]: With dead ends: 329 [2023-11-23 06:54:15,861 INFO L226 Difference]: Without dead ends: 262 [2023-11-23 06:54:15,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2023-11-23 06:54:15,862 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 209 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:15,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1088 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 06:54:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-23 06:54:15,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 254. [2023-11-23 06:54:15,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 167 states have (on average 1.221556886227545) internal successors, (204), 173 states have internal predecessors, (204), 59 states have call successors, (59), 24 states have call predecessors, (59), 27 states have return successors, (64), 56 states have call predecessors, (64), 57 states have call successors, (64) [2023-11-23 06:54:15,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 327 transitions. [2023-11-23 06:54:15,884 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 327 transitions. Word has length 80 [2023-11-23 06:54:15,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:15,885 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 327 transitions. [2023-11-23 06:54:15,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.090909090909091) internal successors, (45), 10 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 06:54:15,885 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 327 transitions. [2023-11-23 06:54:15,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 06:54:15,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:15,886 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:54:15,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 06:54:16,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:54:16,102 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:16,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:16,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1829054106, now seen corresponding path program 1 times [2023-11-23 06:54:16,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:16,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660976019] [2023-11-23 06:54:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:16,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:16,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:16,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:16,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:16,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:16,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:16,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:54:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:16,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:54:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:54:16,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:16,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660976019] [2023-11-23 06:54:16,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660976019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:54:16,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340587073] [2023-11-23 06:54:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:16,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:54:16,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:54:16,625 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 06:54:16,648 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 06:54:17,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:17,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 2614 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 06:54:17,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:54:17,113 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 43 treesize of output 31 [2023-11-23 06:54:17,117 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 27 treesize of output 17 [2023-11-23 06:54:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 06:54:17,470 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:54:17,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340587073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:17,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:54:17,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2023-11-23 06:54:17,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107068421] [2023-11-23 06:54:17,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:17,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:54:17,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:17,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:54:17,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-23 06:54:17,473 INFO L87 Difference]: Start difference. First operand 254 states and 327 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 06:54:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:20,579 INFO L93 Difference]: Finished difference Result 617 states and 788 transitions. [2023-11-23 06:54:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:54:20,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 80 [2023-11-23 06:54:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:20,583 INFO L225 Difference]: With dead ends: 617 [2023-11-23 06:54:20,583 INFO L226 Difference]: Without dead ends: 464 [2023-11-23 06:54:20,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:54:20,584 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 128 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1098 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:20,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 1098 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-23 06:54:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-11-23 06:54:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 412. [2023-11-23 06:54:20,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 283 states have (on average 1.2332155477031803) internal successors, (349), 293 states have internal predecessors, (349), 86 states have call successors, (86), 36 states have call predecessors, (86), 42 states have return successors, (92), 82 states have call predecessors, (92), 82 states have call successors, (92) [2023-11-23 06:54:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 527 transitions. [2023-11-23 06:54:20,620 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 527 transitions. Word has length 80 [2023-11-23 06:54:20,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:20,620 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 527 transitions. [2023-11-23 06:54:20,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 06:54:20,621 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 527 transitions. [2023-11-23 06:54:20,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 06:54:20,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:20,622 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:54:20,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 06:54:20,837 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,SelfDestructingSolverStorable8 [2023-11-23 06:54:20,837 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:20,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:20,838 INFO L85 PathProgramCache]: Analyzing trace with hash 807985752, now seen corresponding path program 1 times [2023-11-23 06:54:20,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:20,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412111757] [2023-11-23 06:54:20,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:20,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:21,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:21,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:21,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:21,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:21,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:21,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:21,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:21,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:21,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:21,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:54:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:21,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:54:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:21,405 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:54:21,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:21,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412111757] [2023-11-23 06:54:21,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412111757] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:54:21,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325441179] [2023-11-23 06:54:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:21,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:54:21,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:54:21,406 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 06:54:21,431 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 06:54:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:21,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 2611 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:54:21,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:54:21,914 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:54:21,914 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:54:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:54:22,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325441179] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:54:22,016 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:54:22,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-23 06:54:22,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208956228] [2023-11-23 06:54:22,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:54:22,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:54:22,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:54:22,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:54:22,018 INFO L87 Difference]: Start difference. First operand 412 states and 527 transitions. Second operand has 11 states, 8 states have (on average 8.0) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:54:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:23,069 INFO L93 Difference]: Finished difference Result 806 states and 1028 transitions. [2023-11-23 06:54:23,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:54:23,075 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 8.0) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 80 [2023-11-23 06:54:23,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:23,079 INFO L225 Difference]: With dead ends: 806 [2023-11-23 06:54:23,079 INFO L226 Difference]: Without dead ends: 415 [2023-11-23 06:54:23,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:54:23,081 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 82 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:23,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 379 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 06:54:23,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2023-11-23 06:54:23,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2023-11-23 06:54:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 286 states have (on average 1.2307692307692308) internal successors, (352), 296 states have internal predecessors, (352), 86 states have call successors, (86), 36 states have call predecessors, (86), 42 states have return successors, (92), 82 states have call predecessors, (92), 82 states have call successors, (92) [2023-11-23 06:54:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 530 transitions. [2023-11-23 06:54:23,110 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 530 transitions. Word has length 80 [2023-11-23 06:54:23,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:23,110 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 530 transitions. [2023-11-23 06:54:23,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 8.0) internal successors, (64), 10 states have internal predecessors, (64), 2 states have call successors, (13), 3 states have call predecessors, (13), 5 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:54:23,111 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 530 transitions. [2023-11-23 06:54:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-23 06:54:23,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:23,112 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:54:23,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 06:54:23,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:54:23,329 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:23,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:23,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1360611261, now seen corresponding path program 2 times [2023-11-23 06:54:23,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:23,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717930722] [2023-11-23 06:54:23,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:23,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:23,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:23,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:23,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:23,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:23,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:23,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:23,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:23,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:54:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:23,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:54:23,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:54:23,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:23,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717930722] [2023-11-23 06:54:23,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717930722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:54:23,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648707812] [2023-11-23 06:54:23,992 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:54:23,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:54:23,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:54:23,993 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 06:54:24,018 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 06:54:24,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 06:54:24,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:54:24,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 2423 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 06:54:24,433 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:54:24,438 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 43 treesize of output 31 [2023-11-23 06:54:24,440 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 27 treesize of output 17 [2023-11-23 06:54:25,010 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:54:25,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:54:25,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648707812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:25,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:54:25,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2023-11-23 06:54:25,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483870369] [2023-11-23 06:54:25,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:25,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:54:25,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:25,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:54:25,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-23 06:54:25,013 INFO L87 Difference]: Start difference. First operand 415 states and 530 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 06:54:28,015 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 06:54:30,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:30,403 INFO L93 Difference]: Finished difference Result 647 states and 823 transitions. [2023-11-23 06:54:30,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 06:54:30,403 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 83 [2023-11-23 06:54:30,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:30,405 INFO L225 Difference]: With dead ends: 647 [2023-11-23 06:54:30,405 INFO L226 Difference]: Without dead ends: 477 [2023-11-23 06:54:30,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-11-23 06:54:30,406 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 154 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:30,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 1073 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 506 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2023-11-23 06:54:30,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-11-23 06:54:30,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 403. [2023-11-23 06:54:30,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 276 states have (on average 1.2246376811594204) internal successors, (338), 285 states have internal predecessors, (338), 85 states have call successors, (85), 36 states have call predecessors, (85), 41 states have return successors, (89), 81 states have call predecessors, (89), 81 states have call successors, (89) [2023-11-23 06:54:30,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 512 transitions. [2023-11-23 06:54:30,442 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 512 transitions. Word has length 83 [2023-11-23 06:54:30,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:30,442 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 512 transitions. [2023-11-23 06:54:30,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 06:54:30,443 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 512 transitions. [2023-11-23 06:54:30,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 06:54:30,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:30,445 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2023-11-23 06:54:30,482 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 06:54:30,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:54:30,663 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:30,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:30,664 INFO L85 PathProgramCache]: Analyzing trace with hash -108457559, now seen corresponding path program 1 times [2023-11-23 06:54:30,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:30,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195970429] [2023-11-23 06:54:30,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:30,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:54:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:54:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:54:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:54:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:31,388 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-23 06:54:31,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:31,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195970429] [2023-11-23 06:54:31,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195970429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:31,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:54:31,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:54:31,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742796787] [2023-11-23 06:54:31,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:31,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:54:31,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:54:31,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:54:31,390 INFO L87 Difference]: Start difference. First operand 403 states and 512 transitions. Second operand has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 06:54:32,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:32,589 INFO L93 Difference]: Finished difference Result 435 states and 547 transitions. [2023-11-23 06:54:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:54:32,590 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 98 [2023-11-23 06:54:32,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:32,591 INFO L225 Difference]: With dead ends: 435 [2023-11-23 06:54:32,591 INFO L226 Difference]: Without dead ends: 433 [2023-11-23 06:54:32,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:54:32,592 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 106 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:32,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 520 Invalid, 856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:54:32,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-23 06:54:32,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 429. [2023-11-23 06:54:32,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 292 states have (on average 1.2123287671232876) internal successors, (354), 303 states have internal predecessors, (354), 89 states have call successors, (89), 40 states have call predecessors, (89), 47 states have return successors, (95), 85 states have call predecessors, (95), 85 states have call successors, (95) [2023-11-23 06:54:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 538 transitions. [2023-11-23 06:54:32,614 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 538 transitions. Word has length 98 [2023-11-23 06:54:32,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:32,615 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 538 transitions. [2023-11-23 06:54:32,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 06:54:32,615 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 538 transitions. [2023-11-23 06:54:32,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 06:54:32,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:32,617 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2023-11-23 06:54:32,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 06:54:32,617 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:32,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:32,617 INFO L85 PathProgramCache]: Analyzing trace with hash -389869791, now seen corresponding path program 1 times [2023-11-23 06:54:32,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:32,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947399260] [2023-11-23 06:54:32,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:32,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:32,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:33,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:54:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:54:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:54:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:54:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,227 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:54:33,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:33,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947399260] [2023-11-23 06:54:33,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947399260] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:54:33,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342449911] [2023-11-23 06:54:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:33,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:54:33,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:54:33,248 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 06:54:33,250 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 06:54:33,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:33,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 06:54:33,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:54:33,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:54:33,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:54:33,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2023-11-23 06:54:33,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2023-11-23 06:54:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 06:54:34,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:54:34,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342449911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:34,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:54:34,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [9] total 18 [2023-11-23 06:54:34,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070646733] [2023-11-23 06:54:34,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:34,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:54:34,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:34,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:54:34,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2023-11-23 06:54:34,361 INFO L87 Difference]: Start difference. First operand 429 states and 538 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 06:54:37,237 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 06:54:37,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:37,993 INFO L93 Difference]: Finished difference Result 500 states and 626 transitions. [2023-11-23 06:54:37,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:54:37,993 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2023-11-23 06:54:37,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:37,995 INFO L225 Difference]: With dead ends: 500 [2023-11-23 06:54:37,996 INFO L226 Difference]: Without dead ends: 448 [2023-11-23 06:54:37,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2023-11-23 06:54:38,008 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 159 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:38,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 856 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 500 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 06:54:38,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2023-11-23 06:54:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 431. [2023-11-23 06:54:38,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 294 states have (on average 1.2074829931972788) internal successors, (355), 305 states have internal predecessors, (355), 89 states have call successors, (89), 40 states have call predecessors, (89), 47 states have return successors, (95), 85 states have call predecessors, (95), 85 states have call successors, (95) [2023-11-23 06:54:38,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 539 transitions. [2023-11-23 06:54:38,053 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 539 transitions. Word has length 102 [2023-11-23 06:54:38,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:38,053 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 539 transitions. [2023-11-23 06:54:38,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 11 states have internal predecessors, (60), 4 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 06:54:38,054 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 539 transitions. [2023-11-23 06:54:38,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 06:54:38,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:38,055 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:54:38,074 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 06:54:38,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 06:54:38,272 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:38,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:38,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1400987041, now seen corresponding path program 1 times [2023-11-23 06:54:38,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:38,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141514343] [2023-11-23 06:54:38,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:38,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:38,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:54:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:54:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:54:38,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:54:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:38,833 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:54:38,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:38,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141514343] [2023-11-23 06:54:38,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141514343] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:54:38,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668718455] [2023-11-23 06:54:38,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:38,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:54:38,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:54:38,835 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 06:54:38,858 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 06:54:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:39,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 06:54:39,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:54:39,503 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 45 treesize of output 33 [2023-11-23 06:54:39,506 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 31 treesize of output 21 [2023-11-23 06:54:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 06:54:40,124 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:54:40,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668718455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:54:40,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:54:40,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [9] total 21 [2023-11-23 06:54:40,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499599324] [2023-11-23 06:54:40,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:54:40,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 06:54:40,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:40,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 06:54:40,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2023-11-23 06:54:40,127 INFO L87 Difference]: Start difference. First operand 431 states and 539 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 5 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 06:54:44,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:54:44,146 INFO L93 Difference]: Finished difference Result 1158 states and 1436 transitions. [2023-11-23 06:54:44,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 06:54:44,147 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 5 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 102 [2023-11-23 06:54:44,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:54:44,150 INFO L225 Difference]: With dead ends: 1158 [2023-11-23 06:54:44,150 INFO L226 Difference]: Without dead ends: 1036 [2023-11-23 06:54:44,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 112 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=186, Invalid=1220, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 06:54:44,152 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 349 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:54:44,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 1493 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 06:54:44,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2023-11-23 06:54:44,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 821. [2023-11-23 06:54:44,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 559 states have (on average 1.1949910554561718) internal successors, (668), 582 states have internal predecessors, (668), 167 states have call successors, (167), 77 states have call predecessors, (167), 94 states have return successors, (182), 161 states have call predecessors, (182), 158 states have call successors, (182) [2023-11-23 06:54:44,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1017 transitions. [2023-11-23 06:54:44,202 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1017 transitions. Word has length 102 [2023-11-23 06:54:44,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:54:44,203 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1017 transitions. [2023-11-23 06:54:44,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 14 states have internal predecessors, (65), 5 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-23 06:54:44,203 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1017 transitions. [2023-11-23 06:54:44,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-23 06:54:44,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:54:44,204 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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 06:54:44,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 06:54:44,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:54:44,420 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:54:44,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:54:44,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1872911901, now seen corresponding path program 1 times [2023-11-23 06:54:44,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:54:44,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460700535] [2023-11-23 06:54:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:44,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:54:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:54:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:54:44,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:54:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:54:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:54:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:54:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:54:44,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:54:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:54:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:54:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:54:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:54:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:44,984 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:54:44,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:54:44,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460700535] [2023-11-23 06:54:44,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460700535] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:54:44,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58214330] [2023-11-23 06:54:44,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:54:44,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:54:44,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:54:44,992 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 06:54:45,004 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 06:54:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:54:45,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 2721 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 06:54:45,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:54:45,552 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 35 treesize of output 27 [2023-11-23 06:54:45,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 06:54:45,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 06:54:45,567 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 39 treesize of output 13 [2023-11-23 06:54:47,616 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#buf~3#1.base_BEFORE_CALL_19| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#buf~3#1.offset_BEFORE_CALL_24| Int)) (let ((.cse0 (select |c_#memory_int#1| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#buf~3#1.base_BEFORE_CALL_19|))) (= (select .cse0 (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#buf~3#1.offset_BEFORE_CALL_24| 16)) (select .cse0 |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#buf~3#1.offset_BEFORE_CALL_24|)))) is different from true [2023-11-23 06:54:48,531 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 1 not checked. [2023-11-23 06:54:48,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:54:53,253 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 31 treesize of output 23 [2023-11-23 06:54:53,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:54:53,267 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 61 treesize of output 65 [2023-11-23 06:54:53,279 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 9 treesize of output 5 [2023-11-23 06:54:53,285 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 294 treesize of output 286 [2023-11-23 06:54:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-23 06:54:53,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58214330] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:54:53,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:54:53,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 12] total 31 [2023-11-23 06:54:53,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416238436] [2023-11-23 06:54:53,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:54:53,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 06:54:53,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:53,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 06:54:53,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=778, Unknown=3, NotChecked=56, Total=930 [2023-11-23 06:54:53,426 INFO L87 Difference]: Start difference. First operand 821 states and 1017 transitions. Second operand has 31 states, 30 states have (on average 4.5) internal successors, (135), 29 states have internal predecessors, (135), 8 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-23 06:55:05,377 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 06:55:26,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:55:35,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:55:42,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:55:44,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:55:46,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:55:48,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:55:50,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:55:52,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:55:54,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:55:56,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:55:58,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:00,408 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:02,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:04,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:06,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:08,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:10,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:12,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:16,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:18,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:21,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:23,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:25,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:27,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:29,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:31,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:33,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:35,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:37,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:39,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 06:56:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:39,910 INFO L93 Difference]: Finished difference Result 2447 states and 3024 transitions. [2023-11-23 06:56:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-23 06:56:39,930 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.5) internal successors, (135), 29 states have internal predecessors, (135), 8 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) Word has length 102 [2023-11-23 06:56:39,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:39,936 INFO L225 Difference]: With dead ends: 2447 [2023-11-23 06:56:39,936 INFO L226 Difference]: Without dead ends: 1375 [2023-11-23 06:56:39,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 213 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 45.5s TimeCoverageRelationStatistics Valid=572, Invalid=3073, Unknown=19, NotChecked=118, Total=3782 [2023-11-23 06:56:39,941 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 733 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 3345 mSolverCounterSat, 84 mSolverCounterUnsat, 31 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 3861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 3345 IncrementalHoareTripleChecker+Invalid, 31 IncrementalHoareTripleChecker+Unknown, 401 IncrementalHoareTripleChecker+Unchecked, 68.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:39,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 768 Invalid, 3861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 3345 Invalid, 31 Unknown, 401 Unchecked, 68.0s Time] [2023-11-23 06:56:39,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2023-11-23 06:56:39,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 812. [2023-11-23 06:56:39,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 575 states have (on average 1.2) internal successors, (690), 599 states have internal predecessors, (690), 144 states have call successors, (144), 73 states have call predecessors, (144), 92 states have return successors, (158), 139 states have call predecessors, (158), 137 states have call successors, (158) [2023-11-23 06:56:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 992 transitions. [2023-11-23 06:56:40,003 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 992 transitions. Word has length 102 [2023-11-23 06:56:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:40,003 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 992 transitions. [2023-11-23 06:56:40,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.5) internal successors, (135), 29 states have internal predecessors, (135), 8 states have call successors, (27), 5 states have call predecessors, (27), 7 states have return successors, (26), 6 states have call predecessors, (26), 8 states have call successors, (26) [2023-11-23 06:56:40,003 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 992 transitions. [2023-11-23 06:56:40,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 06:56:40,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:40,005 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:56:40,025 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 06:56:40,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:40,223 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:40,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:40,224 INFO L85 PathProgramCache]: Analyzing trace with hash -8885771, now seen corresponding path program 1 times [2023-11-23 06:56:40,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:40,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224433411] [2023-11-23 06:56:40,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:40,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:40,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:56:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:40,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:56:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:56:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:40,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:56:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:40,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:56:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:40,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:56:40,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:40,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:56:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:40,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:56:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:40,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:56:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:41,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:41,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:41,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:41,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:56:41,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:41,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:56:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:41,035 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 06:56:41,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:41,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224433411] [2023-11-23 06:56:41,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224433411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:56:41,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582586690] [2023-11-23 06:56:41,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:41,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:41,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:56:41,037 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 06:56:41,078 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 06:56:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:41,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 2904 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 06:56:41,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:56:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 06:56:41,716 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:56:41,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582586690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:41,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:56:41,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-11-23 06:56:41,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269739698] [2023-11-23 06:56:41,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:41,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:56:41,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:41,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:56:41,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:56:41,717 INFO L87 Difference]: Start difference. First operand 812 states and 992 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:56:42,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:42,766 INFO L93 Difference]: Finished difference Result 1360 states and 1670 transitions. [2023-11-23 06:56:42,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:56:42,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 110 [2023-11-23 06:56:42,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:42,769 INFO L225 Difference]: With dead ends: 1360 [2023-11-23 06:56:42,769 INFO L226 Difference]: Without dead ends: 1002 [2023-11-23 06:56:42,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-11-23 06:56:42,771 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 77 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:42,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 925 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:56:42,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2023-11-23 06:56:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 847. [2023-11-23 06:56:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 610 states have (on average 1.20327868852459) internal successors, (734), 634 states have internal predecessors, (734), 144 states have call successors, (144), 73 states have call predecessors, (144), 92 states have return successors, (158), 139 states have call predecessors, (158), 137 states have call successors, (158) [2023-11-23 06:56:42,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1036 transitions. [2023-11-23 06:56:42,824 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1036 transitions. Word has length 110 [2023-11-23 06:56:42,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:42,824 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 1036 transitions. [2023-11-23 06:56:42,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:56:42,824 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1036 transitions. [2023-11-23 06:56:42,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 06:56:42,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:42,826 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:56:42,841 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 06:56:43,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 06:56:43,041 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:43,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:43,041 INFO L85 PathProgramCache]: Analyzing trace with hash 692178807, now seen corresponding path program 1 times [2023-11-23 06:56:43,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:43,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656530922] [2023-11-23 06:56:43,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:43,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:56:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:56:43,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:56:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:56:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:56:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:56:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:56:43,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:56:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:56:43,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:43,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:43,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:56:43,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:56:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:43,828 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 06:56:43,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:43,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656530922] [2023-11-23 06:56:43,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656530922] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:56:43,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500230219] [2023-11-23 06:56:43,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:43,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:43,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:56:43,837 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 06:56:43,861 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 06:56:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:44,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 06:56:44,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:56:44,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:56:44,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:56:44,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2023-11-23 06:56:44,457 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 13 [2023-11-23 06:56:44,770 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 06:56:44,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:56:44,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500230219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:44,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:56:44,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-23 06:56:44,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665000739] [2023-11-23 06:56:44,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:44,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:56:44,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:44,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:56:44,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-23 06:56:44,773 INFO L87 Difference]: Start difference. First operand 847 states and 1036 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:56:46,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:46,893 INFO L93 Difference]: Finished difference Result 1365 states and 1662 transitions. [2023-11-23 06:56:46,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 06:56:46,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 110 [2023-11-23 06:56:46,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:46,897 INFO L225 Difference]: With dead ends: 1365 [2023-11-23 06:56:46,897 INFO L226 Difference]: Without dead ends: 1168 [2023-11-23 06:56:46,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2023-11-23 06:56:46,898 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 258 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 952 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:46,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 317 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 952 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 06:56:46,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2023-11-23 06:56:46,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1114. [2023-11-23 06:56:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 802 states have (on average 1.1982543640897756) internal successors, (961), 832 states have internal predecessors, (961), 190 states have call successors, (190), 97 states have call predecessors, (190), 121 states have return successors, (206), 184 states have call predecessors, (206), 180 states have call successors, (206) [2023-11-23 06:56:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1357 transitions. [2023-11-23 06:56:46,983 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1357 transitions. Word has length 110 [2023-11-23 06:56:46,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:46,983 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 1357 transitions. [2023-11-23 06:56:46,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:56:46,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1357 transitions. [2023-11-23 06:56:46,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 06:56:46,988 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:46,988 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:56:47,020 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 06:56:47,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 06:56:47,205 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:47,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:47,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1020003021, now seen corresponding path program 1 times [2023-11-23 06:56:47,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:47,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137999419] [2023-11-23 06:56:47,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:47,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:47,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:56:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:56:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:56:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:56:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:56:47,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:56:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:56:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:56:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:56:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:56:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:56:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:47,894 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 06:56:47,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:47,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137999419] [2023-11-23 06:56:47,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137999419] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:56:47,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17565873] [2023-11-23 06:56:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:47,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:47,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:56:47,898 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 06:56:47,920 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 06:56:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:48,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 2899 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:56:48,514 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:56:48,582 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 06:56:48,582 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:56:48,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17565873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:48,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:56:48,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-11-23 06:56:48,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092723844] [2023-11-23 06:56:48,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:48,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:56:48,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:48,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:56:48,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:56:48,583 INFO L87 Difference]: Start difference. First operand 1114 states and 1357 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:56:49,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:49,455 INFO L93 Difference]: Finished difference Result 1882 states and 2316 transitions. [2023-11-23 06:56:49,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:56:49,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 110 [2023-11-23 06:56:49,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:49,459 INFO L225 Difference]: With dead ends: 1882 [2023-11-23 06:56:49,459 INFO L226 Difference]: Without dead ends: 1202 [2023-11-23 06:56:49,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:56:49,461 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 39 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:49,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 623 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 06:56:49,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2023-11-23 06:56:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1102. [2023-11-23 06:56:49,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1102 states, 790 states have (on average 1.191139240506329) internal successors, (941), 820 states have internal predecessors, (941), 190 states have call successors, (190), 97 states have call predecessors, (190), 121 states have return successors, (206), 184 states have call predecessors, (206), 180 states have call successors, (206) [2023-11-23 06:56:49,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1337 transitions. [2023-11-23 06:56:49,542 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1337 transitions. Word has length 110 [2023-11-23 06:56:49,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:49,542 INFO L495 AbstractCegarLoop]: Abstraction has 1102 states and 1337 transitions. [2023-11-23 06:56:49,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:56:49,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1337 transitions. [2023-11-23 06:56:49,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 06:56:49,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:49,544 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:56:49,565 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 06:56:49,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 06:56:49,763 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:49,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:49,763 INFO L85 PathProgramCache]: Analyzing trace with hash -318938443, now seen corresponding path program 1 times [2023-11-23 06:56:49,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:49,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164955815] [2023-11-23 06:56:49,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:49,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:56:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:56:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:56:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:56:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:56:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:56:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:56:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:56:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:56:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:56:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:56:50,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:50,495 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 06:56:50,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:50,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164955815] [2023-11-23 06:56:50,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164955815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:56:50,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393555480] [2023-11-23 06:56:50,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:50,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:50,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:56:50,500 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 06:56:50,520 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 06:56:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:51,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 06:56:51,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:56:51,141 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 45 treesize of output 33 [2023-11-23 06:56:51,148 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 31 treesize of output 21 [2023-11-23 06:56:51,484 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 06:56:51,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:56:51,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393555480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:51,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:56:51,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2023-11-23 06:56:51,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012607494] [2023-11-23 06:56:51,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:51,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:56:51,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:51,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:56:51,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:56:51,486 INFO L87 Difference]: Start difference. First operand 1102 states and 1337 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:56:54,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:56:54,998 INFO L93 Difference]: Finished difference Result 2599 states and 3154 transitions. [2023-11-23 06:56:54,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:56:54,999 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 110 [2023-11-23 06:56:54,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:56:55,005 INFO L225 Difference]: With dead ends: 2599 [2023-11-23 06:56:55,005 INFO L226 Difference]: Without dead ends: 2163 [2023-11-23 06:56:55,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=107, Invalid=649, Unknown=0, NotChecked=0, Total=756 [2023-11-23 06:56:55,007 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 250 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:56:55,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 458 Invalid, 1512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-23 06:56:55,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2023-11-23 06:56:55,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 1618. [2023-11-23 06:56:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1170 states have (on average 1.2025641025641025) internal successors, (1407), 1220 states have internal predecessors, (1407), 270 states have call successors, (270), 137 states have call predecessors, (270), 177 states have return successors, (298), 260 states have call predecessors, (298), 256 states have call successors, (298) [2023-11-23 06:56:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 1975 transitions. [2023-11-23 06:56:55,135 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 1975 transitions. Word has length 110 [2023-11-23 06:56:55,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:56:55,136 INFO L495 AbstractCegarLoop]: Abstraction has 1618 states and 1975 transitions. [2023-11-23 06:56:55,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:56:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 1975 transitions. [2023-11-23 06:56:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 06:56:55,139 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:56:55,139 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:56:55,156 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 06:56:55,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:55,356 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:56:55,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:56:55,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2041071375, now seen corresponding path program 1 times [2023-11-23 06:56:55,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:56:55,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606946775] [2023-11-23 06:56:55,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:55,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:56:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:56:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:56:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:56:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:56:55,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:56:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:56:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:56:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:55,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:56:55,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:56,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:56:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:56,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:56,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:56:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:56:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:56,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:56:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:56,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:56:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:56,080 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 06:56:56,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:56:56,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606946775] [2023-11-23 06:56:56,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606946775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:56:56,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527402392] [2023-11-23 06:56:56,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:56:56,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:56:56,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:56:56,084 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 06:56:56,110 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 06:56:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:56:56,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 2896 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 06:56:56,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:56:56,665 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 45 treesize of output 33 [2023-11-23 06:56:56,667 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 31 treesize of output 21 [2023-11-23 06:56:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 06:56:57,024 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:56:57,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1527402392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:56:57,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:56:57,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 20 [2023-11-23 06:56:57,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323874111] [2023-11-23 06:56:57,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:56:57,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:56:57,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:56:57,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:56:57,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:56:57,030 INFO L87 Difference]: Start difference. First operand 1618 states and 1975 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:57:00,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:00,941 INFO L93 Difference]: Finished difference Result 2467 states and 2992 transitions. [2023-11-23 06:57:00,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:57:00,942 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 110 [2023-11-23 06:57:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:00,948 INFO L225 Difference]: With dead ends: 2467 [2023-11-23 06:57:00,948 INFO L226 Difference]: Without dead ends: 2117 [2023-11-23 06:57:00,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2023-11-23 06:57:00,950 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 203 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:00,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 390 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-23 06:57:00,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2023-11-23 06:57:01,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 1626. [2023-11-23 06:57:01,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1178 states have (on average 1.201188455008489) internal successors, (1415), 1228 states have internal predecessors, (1415), 270 states have call successors, (270), 137 states have call predecessors, (270), 177 states have return successors, (298), 260 states have call predecessors, (298), 256 states have call successors, (298) [2023-11-23 06:57:01,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 1983 transitions. [2023-11-23 06:57:01,135 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 1983 transitions. Word has length 110 [2023-11-23 06:57:01,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:01,136 INFO L495 AbstractCegarLoop]: Abstraction has 1626 states and 1983 transitions. [2023-11-23 06:57:01,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 10 states have internal predecessors, (52), 4 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:57:01,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 1983 transitions. [2023-11-23 06:57:01,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 06:57:01,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:01,138 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:57:01,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 06:57:01,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:01,354 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:01,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:01,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1340006797, now seen corresponding path program 1 times [2023-11-23 06:57:01,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:01,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802465573] [2023-11-23 06:57:01,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:01,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:57:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:57:01,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:57:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:57:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:57:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:57:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:57:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:57:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:57:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:57:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 06:57:01,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:01,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802465573] [2023-11-23 06:57:01,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802465573] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:01,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155438899] [2023-11-23 06:57:01,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:01,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:01,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:01,967 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 06:57:01,968 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 06:57:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:02,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:57:02,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:02,564 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 06:57:02,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:57:02,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155438899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:02,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:57:02,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-11-23 06:57:02,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039487064] [2023-11-23 06:57:02,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:02,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:57:02,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:02,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:57:02,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:57:02,566 INFO L87 Difference]: Start difference. First operand 1626 states and 1983 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:57:03,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:03,256 INFO L93 Difference]: Finished difference Result 2480 states and 3042 transitions. [2023-11-23 06:57:03,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:57:03,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 110 [2023-11-23 06:57:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:03,261 INFO L225 Difference]: With dead ends: 2480 [2023-11-23 06:57:03,262 INFO L226 Difference]: Without dead ends: 1750 [2023-11-23 06:57:03,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:57:03,264 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 29 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:03,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 630 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:57:03,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2023-11-23 06:57:03,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1618. [2023-11-23 06:57:03,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1170 states have (on average 1.1854700854700855) internal successors, (1387), 1220 states have internal predecessors, (1387), 270 states have call successors, (270), 137 states have call predecessors, (270), 177 states have return successors, (298), 260 states have call predecessors, (298), 256 states have call successors, (298) [2023-11-23 06:57:03,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 1955 transitions. [2023-11-23 06:57:03,499 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 1955 transitions. Word has length 110 [2023-11-23 06:57:03,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:03,500 INFO L495 AbstractCegarLoop]: Abstraction has 1618 states and 1955 transitions. [2023-11-23 06:57:03,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:57:03,500 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 1955 transitions. [2023-11-23 06:57:03,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 06:57:03,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:03,501 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:57:03,518 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-23 06:57:03,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-23 06:57:03,718 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:03,718 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:03,718 INFO L85 PathProgramCache]: Analyzing trace with hash 2036866807, now seen corresponding path program 1 times [2023-11-23 06:57:03,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:03,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809871650] [2023-11-23 06:57:03,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:03,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:04,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:04,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:04,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:04,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:04,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:57:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:04,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:57:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:04,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:57:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:04,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:57:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:04,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:57:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:04,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:57:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:57:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:04,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:05,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:05,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:57:05,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:05,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:57:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:05,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:57:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:05,031 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 06:57:05,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:05,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809871650] [2023-11-23 06:57:05,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809871650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:05,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:57:05,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:57:05,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891914562] [2023-11-23 06:57:05,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:05,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:57:05,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:05,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:57:05,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:57:05,034 INFO L87 Difference]: Start difference. First operand 1618 states and 1955 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:57:06,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:06,526 INFO L93 Difference]: Finished difference Result 1876 states and 2253 transitions. [2023-11-23 06:57:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:57:06,527 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 110 [2023-11-23 06:57:06,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:06,532 INFO L225 Difference]: With dead ends: 1876 [2023-11-23 06:57:06,533 INFO L226 Difference]: Without dead ends: 1393 [2023-11-23 06:57:06,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:57:06,534 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 91 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:06,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 299 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 06:57:06,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2023-11-23 06:57:06,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1363. [2023-11-23 06:57:06,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 982 states have (on average 1.1782077393075356) internal successors, (1157), 1023 states have internal predecessors, (1157), 230 states have call successors, (230), 117 states have call predecessors, (230), 150 states have return successors, (253), 222 states have call predecessors, (253), 218 states have call successors, (253) [2023-11-23 06:57:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1640 transitions. [2023-11-23 06:57:06,670 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1640 transitions. Word has length 110 [2023-11-23 06:57:06,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:06,671 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 1640 transitions. [2023-11-23 06:57:06,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:57:06,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1640 transitions. [2023-11-23 06:57:06,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 06:57:06,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:06,673 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:57:06,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 06:57:06,673 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:06,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:06,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1109975596, now seen corresponding path program 1 times [2023-11-23 06:57:06,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:06,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328060958] [2023-11-23 06:57:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:06,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:07,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:57:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:57:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:57:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:57:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:57:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:57:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:57:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:07,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:57:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:57:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:57:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 06:57:07,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:07,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328060958] [2023-11-23 06:57:07,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328060958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:07,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:57:07,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 06:57:07,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595347420] [2023-11-23 06:57:07,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:07,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:57:07,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:07,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:57:07,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:57:07,439 INFO L87 Difference]: Start difference. First operand 1363 states and 1640 transitions. Second operand has 12 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:57:09,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:09,831 INFO L93 Difference]: Finished difference Result 1553 states and 1843 transitions. [2023-11-23 06:57:09,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 06:57:09,832 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2023-11-23 06:57:09,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:09,836 INFO L225 Difference]: With dead ends: 1553 [2023-11-23 06:57:09,844 INFO L226 Difference]: Without dead ends: 1551 [2023-11-23 06:57:09,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:57:09,846 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 202 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 1064 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:09,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 648 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1064 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 06:57:09,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2023-11-23 06:57:09,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1387. [2023-11-23 06:57:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1387 states, 1006 states have (on average 1.1739562624254474) internal successors, (1181), 1047 states have internal predecessors, (1181), 230 states have call successors, (230), 117 states have call predecessors, (230), 150 states have return successors, (253), 222 states have call predecessors, (253), 218 states have call successors, (253) [2023-11-23 06:57:09,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1387 states to 1387 states and 1664 transitions. [2023-11-23 06:57:09,983 INFO L78 Accepts]: Start accepts. Automaton has 1387 states and 1664 transitions. Word has length 112 [2023-11-23 06:57:09,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:09,984 INFO L495 AbstractCegarLoop]: Abstraction has 1387 states and 1664 transitions. [2023-11-23 06:57:09,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.4) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:57:09,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1387 states and 1664 transitions. [2023-11-23 06:57:09,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-23 06:57:09,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:09,986 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:57:09,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 06:57:09,986 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:09,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:09,986 INFO L85 PathProgramCache]: Analyzing trace with hash 716948586, now seen corresponding path program 1 times [2023-11-23 06:57:09,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:09,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299413727] [2023-11-23 06:57:09,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:09,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:10,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:57:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:57:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:57:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:57:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:57:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:57:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:57:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:57:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:57:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:57:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 06:57:10,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:10,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299413727] [2023-11-23 06:57:10,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299413727] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:10,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1105415638] [2023-11-23 06:57:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:10,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:10,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:10,678 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:57:10,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 06:57:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:11,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 2906 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-23 06:57:11,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 48 proven. 15 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 06:57:11,359 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:57:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 06:57:11,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1105415638] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:57:11,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:57:11,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 20 [2023-11-23 06:57:11,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137456693] [2023-11-23 06:57:11,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:57:11,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 06:57:11,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:11,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 06:57:11,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:57:11,552 INFO L87 Difference]: Start difference. First operand 1387 states and 1664 transitions. Second operand has 20 states, 17 states have (on average 5.529411764705882) internal successors, (94), 18 states have internal predecessors, (94), 2 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 06:57:13,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:13,615 INFO L93 Difference]: Finished difference Result 2781 states and 3339 transitions. [2023-11-23 06:57:13,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 06:57:13,616 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.529411764705882) internal successors, (94), 18 states have internal predecessors, (94), 2 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 112 [2023-11-23 06:57:13,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:13,620 INFO L225 Difference]: With dead ends: 2781 [2023-11-23 06:57:13,620 INFO L226 Difference]: Without dead ends: 1431 [2023-11-23 06:57:13,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=472, Unknown=0, NotChecked=0, Total=702 [2023-11-23 06:57:13,623 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 87 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:13,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 529 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-23 06:57:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2023-11-23 06:57:13,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1401. [2023-11-23 06:57:13,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1020 states have (on average 1.1715686274509804) internal successors, (1195), 1061 states have internal predecessors, (1195), 230 states have call successors, (230), 117 states have call predecessors, (230), 150 states have return successors, (253), 222 states have call predecessors, (253), 218 states have call successors, (253) [2023-11-23 06:57:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1678 transitions. [2023-11-23 06:57:13,830 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1678 transitions. Word has length 112 [2023-11-23 06:57:13,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:13,830 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1678 transitions. [2023-11-23 06:57:13,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.529411764705882) internal successors, (94), 18 states have internal predecessors, (94), 2 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-23 06:57:13,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1678 transitions. [2023-11-23 06:57:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 06:57:13,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:13,843 INFO L195 NwaCegarLoop]: trace histogram [12, 7, 7, 7, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:57:13,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 06:57:14,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:14,058 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:14,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:14,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1237894251, now seen corresponding path program 2 times [2023-11-23 06:57:14,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:14,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010057052] [2023-11-23 06:57:14,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:14,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:14,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:14,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:14,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:14,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:57:14,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:14,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:57:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:14,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:57:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:14,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:57:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:14,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:57:14,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:14,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:57:14,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:57:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:15,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 06:57:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:57:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 06:57:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:15,062 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 06:57:15,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:15,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010057052] [2023-11-23 06:57:15,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010057052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:15,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052208359] [2023-11-23 06:57:15,063 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:57:15,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:15,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:15,064 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:57:15,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 06:57:16,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:57:16,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:57:16,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 06:57:16,267 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:16,389 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 06:57:16,392 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 25 treesize of output 19 [2023-11-23 06:57:16,852 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-23 06:57:16,853 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:57:16,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052208359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:16,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:57:16,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 29 [2023-11-23 06:57:16,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123286721] [2023-11-23 06:57:16,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:16,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 06:57:16,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:16,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 06:57:16,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2023-11-23 06:57:16,855 INFO L87 Difference]: Start difference. First operand 1401 states and 1678 transitions. Second operand has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 06:57:19,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:19,834 INFO L93 Difference]: Finished difference Result 1676 states and 1995 transitions. [2023-11-23 06:57:19,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 06:57:19,834 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 119 [2023-11-23 06:57:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:19,839 INFO L225 Difference]: With dead ends: 1676 [2023-11-23 06:57:19,839 INFO L226 Difference]: Without dead ends: 1250 [2023-11-23 06:57:19,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2023-11-23 06:57:19,866 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 263 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 1394 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 1505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:19,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 428 Invalid, 1505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1394 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-23 06:57:19,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2023-11-23 06:57:19,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 975. [2023-11-23 06:57:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 694 states have (on average 1.1570605187319885) internal successors, (803), 717 states have internal predecessors, (803), 172 states have call successors, (172), 91 states have call predecessors, (172), 108 states have return successors, (183), 166 states have call predecessors, (183), 164 states have call successors, (183) [2023-11-23 06:57:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1158 transitions. [2023-11-23 06:57:19,982 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1158 transitions. Word has length 119 [2023-11-23 06:57:19,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:19,982 INFO L495 AbstractCegarLoop]: Abstraction has 975 states and 1158 transitions. [2023-11-23 06:57:19,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 5 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 06:57:19,983 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1158 transitions. [2023-11-23 06:57:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 06:57:19,984 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:19,984 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:57:20,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 06:57:20,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:20,202 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:20,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:20,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1444233981, now seen corresponding path program 1 times [2023-11-23 06:57:20,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:20,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165262817] [2023-11-23 06:57:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:20,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:20,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:20,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:57:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:57:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:57:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:57:20,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:57:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:57:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:57:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:57:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:57:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 06:57:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 06:57:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-23 06:57:20,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:20,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165262817] [2023-11-23 06:57:20,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165262817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:20,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:57:20,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:57:20,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489637474] [2023-11-23 06:57:20,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:20,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:57:20,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:20,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:57:20,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:57:20,790 INFO L87 Difference]: Start difference. First operand 975 states and 1158 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 06:57:22,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:22,330 INFO L93 Difference]: Finished difference Result 1017 states and 1203 transitions. [2023-11-23 06:57:22,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:57:22,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 119 [2023-11-23 06:57:22,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:22,334 INFO L225 Difference]: With dead ends: 1017 [2023-11-23 06:57:22,334 INFO L226 Difference]: Without dead ends: 1015 [2023-11-23 06:57:22,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:57:22,334 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 100 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:22,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 520 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 06:57:22,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2023-11-23 06:57:22,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1011. [2023-11-23 06:57:22,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 717 states have (on average 1.1520223152022315) internal successors, (826), 744 states have internal predecessors, (826), 176 states have call successors, (176), 96 states have call predecessors, (176), 117 states have return successors, (191), 170 states have call predecessors, (191), 168 states have call successors, (191) [2023-11-23 06:57:22,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1193 transitions. [2023-11-23 06:57:22,457 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1193 transitions. Word has length 119 [2023-11-23 06:57:22,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:22,457 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1193 transitions. [2023-11-23 06:57:22,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 06:57:22,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1193 transitions. [2023-11-23 06:57:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-23 06:57:22,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:22,459 INFO L195 NwaCegarLoop]: trace histogram [12, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:57:22,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-23 06:57:22,459 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:22,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash 960637802, now seen corresponding path program 1 times [2023-11-23 06:57:22,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:22,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475992587] [2023-11-23 06:57:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:22,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:57:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:57:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:57:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:57:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:57:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:57:22,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:57:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 06:57:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 06:57:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:57:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:57:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-23 06:57:22,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:22,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475992587] [2023-11-23 06:57:22,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475992587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:57:22,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:57:22,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:57:22,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74312493] [2023-11-23 06:57:22,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:57:22,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:57:22,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:22,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:57:22,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:57:22,929 INFO L87 Difference]: Start difference. First operand 1011 states and 1193 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 06:57:24,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:57:24,251 INFO L93 Difference]: Finished difference Result 1637 states and 1938 transitions. [2023-11-23 06:57:24,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:57:24,252 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 124 [2023-11-23 06:57:24,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:57:24,255 INFO L225 Difference]: With dead ends: 1637 [2023-11-23 06:57:24,255 INFO L226 Difference]: Without dead ends: 1031 [2023-11-23 06:57:24,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:57:24,260 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 223 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:57:24,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 369 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:57:24,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-11-23 06:57:24,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1019. [2023-11-23 06:57:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 723 states have (on average 1.1507607192254494) internal successors, (832), 750 states have internal predecessors, (832), 176 states have call successors, (176), 96 states have call predecessors, (176), 119 states have return successors, (193), 172 states have call predecessors, (193), 168 states have call successors, (193) [2023-11-23 06:57:24,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1201 transitions. [2023-11-23 06:57:24,388 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1201 transitions. Word has length 124 [2023-11-23 06:57:24,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:57:24,388 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1201 transitions. [2023-11-23 06:57:24,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 06:57:24,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1201 transitions. [2023-11-23 06:57:24,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-23 06:57:24,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:57:24,390 INFO L195 NwaCegarLoop]: trace histogram [12, 4, 4, 4, 3, 3, 3, 3, 3, 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 06:57:24,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-23 06:57:24,390 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:57:24,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:57:24,390 INFO L85 PathProgramCache]: Analyzing trace with hash 36744251, now seen corresponding path program 1 times [2023-11-23 06:57:24,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:57:24,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083649628] [2023-11-23 06:57:24,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:24,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:57:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:24,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:57:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:24,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:57:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:24,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:57:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:24,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:57:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 06:57:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:24,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 06:57:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:24,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 06:57:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:57:24,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:25,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 06:57:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:25,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:57:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:25,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:57:25,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-23 06:57:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:25,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 06:57:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:25,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 06:57:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 4 proven. 78 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 06:57:25,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:57:25,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083649628] [2023-11-23 06:57:25,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083649628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:25,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841525949] [2023-11-23 06:57:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:57:25,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:57:25,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:57:25,332 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:57:25,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 06:57:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:57:26,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 2912 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-23 06:57:26,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:57:26,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 06:57:26,058 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 11 treesize of output 5 [2023-11-23 06:57:26,232 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 06:57:26,404 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 06:57:26,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-23 06:57:26,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 06:57:28,448 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_~#src#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#cursor~2#1.base_BEFORE_CALL_6| Int)) (and (= (select (select |c_#memory_int#4| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#cursor~2#1.base_BEFORE_CALL_6|) 0) (select (select |c_#memory_int#4| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_~#src#1.base_BEFORE_CALL_2|) 0)) (not (= |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#cursor~2#1.base_BEFORE_CALL_6| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_~#src#1.base_BEFORE_CALL_2|)))) is different from true [2023-11-23 06:57:30,515 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_~#src#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#cursor~2#1.base_BEFORE_CALL_7| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#cursor~2#1.base_BEFORE_CALL_7| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_~#src#1.base_BEFORE_CALL_3|)) (= (select (select |c_#memory_int#4| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#cursor~2#1.base_BEFORE_CALL_7|) 0) (select (select |c_#memory_int#4| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_~#src#1.base_BEFORE_CALL_3|) 0)))) is different from true [2023-11-23 06:57:32,583 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_~#src#1.base_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#cursor~2#1.base_BEFORE_CALL_8| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#cursor~2#1.base_BEFORE_CALL_8| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_~#src#1.base_BEFORE_CALL_4|)) (= (select (select |c_#memory_int#4| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#cursor~2#1.base_BEFORE_CALL_8|) 0) (select (select |c_#memory_int#4| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_~#src#1.base_BEFORE_CALL_4|) 0)))) is different from true [2023-11-23 06:57:34,678 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_~#src#1.base_BEFORE_CALL_5| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#cursor~2#1.base_BEFORE_CALL_9| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#cursor~2#1.base_BEFORE_CALL_9| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_~#src#1.base_BEFORE_CALL_5|)) (= (select (select |c_#memory_int#4| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_~#src#1.base_BEFORE_CALL_5|) 0) (select (select |c_#memory_int#4| |v_ULTIMATE.start_aws_byte_buf_init_copy_from_cursor_harness_~#cursor~2#1.base_BEFORE_CALL_9|) 0)))) is different from true [2023-11-23 06:57:34,867 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 35 treesize of output 25 [2023-11-23 06:57:36,706 INFO L349 Elim1Store]: treesize reduction 12, result has 77.4 percent of original size [2023-11-23 06:57:36,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 74 [2023-11-23 06:57:37,479 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 83 trivial. 32 not checked. [2023-11-23 06:57:37,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:57:38,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:57:38,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 64 [2023-11-23 06:57:38,196 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 06:57:38,201 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 156 treesize of output 154 [2023-11-23 06:57:38,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841525949] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:57:38,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:57:38,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 36 [2023-11-23 06:57:38,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222049559] [2023-11-23 06:57:38,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:57:38,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-23 06:57:38,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:57:38,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-23 06:57:38,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=1675, Unknown=4, NotChecked=340, Total=2162 [2023-11-23 06:57:38,528 INFO L87 Difference]: Start difference. First operand 1019 states and 1201 transitions. Second operand has 36 states, 35 states have (on average 4.0285714285714285) internal successors, (141), 35 states have internal predecessors, (141), 7 states have call successors, (29), 10 states have call predecessors, (29), 11 states have return successors, (28), 7 states have call predecessors, (28), 7 states have call successors, (28) Killed by 15