./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_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_append_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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:47:33,051 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:47:33,119 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:47:33,122 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:47:33,123 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:47:33,148 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:47:33,149 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:47:33,149 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:47:33,150 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:47:33,153 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:47:33,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:47:33,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:47:33,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:47:33,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:47:33,155 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:47:33,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:47:33,155 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:47:33,155 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:47:33,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:47:33,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:47:33,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:47:33,156 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:47:33,157 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:47:33,157 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:47:33,157 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:47:33,158 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:47:33,158 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:47:33,158 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:47:33,158 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:47:33,158 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:47:33,159 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:47:33,159 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:47:33,160 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:47:33,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:47:33,160 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:47:33,160 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:47:33,160 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:47:33,161 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:47:33,161 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:47:33,161 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:47:33,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:47:33,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:47:33,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:47:33,373 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:47:33,373 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:47:33,374 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_harness.i [2023-11-23 06:47:34,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:47:34,935 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:47:34,936 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_append_harness.i [2023-11-23 06:47:34,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/559362f77/1d6df571d15e43eb9f73b1e6112221c9/FLAG6d4e91565 [2023-11-23 06:47:34,994 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/559362f77/1d6df571d15e43eb9f73b1e6112221c9 [2023-11-23 06:47:34,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:47:34,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:47:34,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:47:34,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:47:35,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:47:35,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:47:34" (1/1) ... [2023-11-23 06:47:35,005 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0cd868 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:35, skipping insertion in model container [2023-11-23 06:47:35,005 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:47:34" (1/1) ... [2023-11-23 06:47:35,112 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:47:35,303 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_append_harness.i[4493,4506] [2023-11-23 06:47:35,310 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_append_harness.i[4553,4566] [2023-11-23 06:47:35,825 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:35,828 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:35,829 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:35,830 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:35,830 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:35,838 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:35,838 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:35,839 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:35,840 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,062 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:47:36,063 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:47:36,064 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:47:36,064 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:47:36,065 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:47:36,066 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:47:36,066 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:47:36,067 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:47:36,067 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:47:36,067 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:47:36,267 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,278 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:47:36,373 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:47:36,384 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_append_harness.i[4493,4506] [2023-11-23 06:47:36,384 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_append_harness.i[4553,4566] [2023-11-23 06:47:36,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,414 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,414 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,415 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,416 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,423 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,423 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,424 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,425 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,452 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:47:36,453 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:47:36,453 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:47:36,455 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:47:36,456 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:47:36,456 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:47:36,457 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:47:36,457 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:47:36,457 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:47:36,462 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:47:36,533 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-23 06:47:36,535 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,535 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:47:36,544 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-23 06:47:36,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:47:36,765 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,765 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,765 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,765 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,766 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,766 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,766 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,766 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,766 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,766 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,767 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,767 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,767 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,767 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,767 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,768 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,768 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,768 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:47:36,774 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:47:36,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36 WrapperNode [2023-11-23 06:47:36,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:47:36,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:47:36,776 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:47:36,776 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:47:36,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (1/1) ... [2023-11-23 06:47:36,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (1/1) ... [2023-11-23 06:47:36,947 INFO L138 Inliner]: procedures = 690, calls = 2646, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 857 [2023-11-23 06:47:36,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:47:36,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:47:36,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:47:36,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:47:36,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (1/1) ... [2023-11-23 06:47:36,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (1/1) ... [2023-11-23 06:47:36,969 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (1/1) ... [2023-11-23 06:47:37,007 INFO L188 MemorySlicer]: Split 568 memory accesses to 9 slices as follows [2, 256, 236, 20, 9, 4, 9, 29, 3]. 45 percent of accesses are in the largest equivalence class. The 508 initializations are split as follows [2, 256, 236, 0, 4, 2, 5, 0, 3]. The 5 writes are split as follows [0, 0, 0, 1, 0, 0, 1, 3, 0]. [2023-11-23 06:47:37,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (1/1) ... [2023-11-23 06:47:37,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (1/1) ... [2023-11-23 06:47:37,042 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (1/1) ... [2023-11-23 06:47:37,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (1/1) ... [2023-11-23 06:47:37,068 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (1/1) ... [2023-11-23 06:47:37,072 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (1/1) ... [2023-11-23 06:47:37,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:47:37,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:47:37,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:47:37,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:47:37,083 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (1/1) ... [2023-11-23 06:47:37,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:47:37,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:37,134 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 06:47:37,161 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 06:47:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 06:47:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 06:47:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2023-11-23 06:47:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2023-11-23 06:47:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:47:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:47:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:47:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2023-11-23 06:47:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2023-11-23 06:47:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:47:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:47:37,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:47:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:47:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:47:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:47:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 06:47:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 06:47:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 06:47:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 06:47:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 06:47:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:47:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:47:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:47:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:47:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:47:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:47:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:47:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:47:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:47:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:47:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 06:47:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 06:47:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 06:47:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 06:47:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 06:47:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:47:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:47:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:47:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:47:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:47:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:47:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 06:47:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 06:47:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:47:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:47:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:47:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:47:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:47:37,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:47:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:47:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 06:47:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 06:47:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 06:47:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:47:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:47:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:47:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:47:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:47:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:47:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 06:47:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 06:47:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-23 06:47:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:47:37,193 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:47:37,193 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2023-11-23 06:47:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2023-11-23 06:47:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 06:47:37,194 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 06:47:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:47:37,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:47:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:47:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:47:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:47:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:47:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 06:47:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 06:47:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 06:47:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:47:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:47:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:47:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:47:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:47:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:47:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 06:47:37,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 06:47:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 06:47:37,490 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:47:37,492 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:47:38,101 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:47:38,245 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:47:38,245 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 06:47:38,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:47:38 BoogieIcfgContainer [2023-11-23 06:47:38,246 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:47:38,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:47:38,247 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:47:38,250 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:47:38,250 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:47:34" (1/3) ... [2023-11-23 06:47:38,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e28810c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:47:38, skipping insertion in model container [2023-11-23 06:47:38,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:47:36" (2/3) ... [2023-11-23 06:47:38,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e28810c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:47:38, skipping insertion in model container [2023-11-23 06:47:38,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:47:38" (3/3) ... [2023-11-23 06:47:38,252 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2023-11-23 06:47:38,265 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:47:38,265 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:47:38,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:47:38,301 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;@ebd6f63, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:47:38,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:47:38,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 151 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 89 states have internal predecessors, (111), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 06:47:38,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 06:47:38,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:38,314 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-23 06:47:38,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:38,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:38,318 INFO L85 PathProgramCache]: Analyzing trace with hash 2064326179, now seen corresponding path program 1 times [2023-11-23 06:47:38,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:38,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085466167] [2023-11-23 06:47:38,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:38,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:47:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:47:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:38,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:47:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:47:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:47:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:47:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:47:38,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:47:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:47:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:47:38,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:47:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 06:47:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 06:47:38,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:38,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085466167] [2023-11-23 06:47:38,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085466167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:38,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:47:38,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 06:47:38,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607348547] [2023-11-23 06:47:38,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:38,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 06:47:38,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:38,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 06:47:38,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 06:47:38,948 INFO L87 Difference]: Start difference. First operand has 151 states, 88 states have (on average 1.2613636363636365) internal successors, (111), 89 states have internal predecessors, (111), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:47:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:39,524 INFO L93 Difference]: Finished difference Result 300 states and 444 transitions. [2023-11-23 06:47:39,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:47:39,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 85 [2023-11-23 06:47:39,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:39,533 INFO L225 Difference]: With dead ends: 300 [2023-11-23 06:47:39,534 INFO L226 Difference]: Without dead ends: 149 [2023-11-23 06:47:39,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 06:47:39,540 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 105 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:39,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 91 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:47:39,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-23 06:47:39,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-11-23 06:47:39,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 87 states have (on average 1.2298850574712643) internal successors, (107), 88 states have internal predecessors, (107), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-23 06:47:39,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 202 transitions. [2023-11-23 06:47:39,577 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 202 transitions. Word has length 85 [2023-11-23 06:47:39,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:39,578 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 202 transitions. [2023-11-23 06:47:39,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:47:39,578 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 202 transitions. [2023-11-23 06:47:39,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 06:47:39,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:39,581 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-23 06:47:39,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:47:39,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:39,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:39,582 INFO L85 PathProgramCache]: Analyzing trace with hash 483743965, now seen corresponding path program 1 times [2023-11-23 06:47:39,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:39,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661899277] [2023-11-23 06:47:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:39,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:47:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:47:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:40,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:47:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:47:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:47:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:47:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 06:47:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:47:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:47:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:47:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:47:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 06:47:40,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,351 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-23 06:47:40,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:40,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661899277] [2023-11-23 06:47:40,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661899277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:40,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515617916] [2023-11-23 06:47:40,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:40,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:40,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:40,369 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 06:47:40,371 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 06:47:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:40,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 2642 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:47:40,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-23 06:47:40,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:47:40,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515617916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:40,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:47:40,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-23 06:47:40,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470987605] [2023-11-23 06:47:40,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:40,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:47:40,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:40,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:47:40,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:47:40,986 INFO L87 Difference]: Start difference. First operand 149 states and 202 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 06:47:41,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:41,243 INFO L93 Difference]: Finished difference Result 287 states and 392 transitions. [2023-11-23 06:47:41,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:47:41,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 85 [2023-11-23 06:47:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:41,246 INFO L225 Difference]: With dead ends: 287 [2023-11-23 06:47:41,246 INFO L226 Difference]: Without dead ends: 151 [2023-11-23 06:47:41,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:47:41,248 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 38 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:41,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 487 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:47:41,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-23 06:47:41,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-23 06:47:41,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 90 states have internal predecessors, (108), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-11-23 06:47:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 206 transitions. [2023-11-23 06:47:41,261 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 206 transitions. Word has length 85 [2023-11-23 06:47:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:41,261 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 206 transitions. [2023-11-23 06:47:41,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 06:47:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 206 transitions. [2023-11-23 06:47:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-23 06:47:41,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:41,263 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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 06:47:41,299 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 06:47:41,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:41,480 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:41,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:41,481 INFO L85 PathProgramCache]: Analyzing trace with hash 533175282, now seen corresponding path program 1 times [2023-11-23 06:47:41,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:41,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259060673] [2023-11-23 06:47:41,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:41,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:41,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:47:42,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:47:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:47:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:47:42,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:47:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:47:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:47:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:47:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:47:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:47:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 06:47:42,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 06:47:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,414 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-23 06:47:42,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:42,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259060673] [2023-11-23 06:47:42,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259060673] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:42,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246780412] [2023-11-23 06:47:42,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:42,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:42,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:42,416 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 06:47:42,440 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 06:47:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:42,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:47:42,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 56 proven. 14 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 06:47:42,964 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:47:43,064 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-23 06:47:43,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246780412] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:47:43,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:47:43,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 6] total 18 [2023-11-23 06:47:43,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760532059] [2023-11-23 06:47:43,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:47:43,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 06:47:43,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:43,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 06:47:43,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2023-11-23 06:47:43,067 INFO L87 Difference]: Start difference. First operand 151 states and 206 transitions. Second operand has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 16 states have internal predecessors, (97), 9 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (38), 8 states have call predecessors, (38), 9 states have call successors, (38) [2023-11-23 06:47:44,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:44,751 INFO L93 Difference]: Finished difference Result 275 states and 380 transitions. [2023-11-23 06:47:44,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:47:44,751 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 16 states have internal predecessors, (97), 9 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (38), 8 states have call predecessors, (38), 9 states have call successors, (38) Word has length 91 [2023-11-23 06:47:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:44,753 INFO L225 Difference]: With dead ends: 275 [2023-11-23 06:47:44,753 INFO L226 Difference]: Without dead ends: 151 [2023-11-23 06:47:44,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2023-11-23 06:47:44,754 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 337 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 1630 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 1630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:44,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 362 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 1630 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 06:47:44,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-23 06:47:44,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2023-11-23 06:47:44,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 90 states have internal predecessors, (107), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2023-11-23 06:47:44,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 205 transitions. [2023-11-23 06:47:44,778 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 205 transitions. Word has length 91 [2023-11-23 06:47:44,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:44,778 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 205 transitions. [2023-11-23 06:47:44,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 16 states have internal predecessors, (97), 9 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (38), 8 states have call predecessors, (38), 9 states have call successors, (38) [2023-11-23 06:47:44,779 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 205 transitions. [2023-11-23 06:47:44,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 06:47:44,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:44,783 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-23 06:47:44,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 06:47:44,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 06:47:44,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:44,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:44,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1646976168, now seen corresponding path program 1 times [2023-11-23 06:47:44,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:44,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255104279] [2023-11-23 06:47:44,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:44,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:47:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:47:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:47:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:47:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:47:45,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:47:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:47:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:47:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:47:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 06:47:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 06:47:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:47:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:45,721 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 06:47:45,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:45,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255104279] [2023-11-23 06:47:45,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255104279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:45,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403304760] [2023-11-23 06:47:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:45,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:45,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:45,738 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 06:47:45,772 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 06:47:46,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:46,180 INFO L262 TraceCheckSpWp]: Trace formula consists of 2681 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:47:46,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:46,294 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 27 proven. 48 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 06:47:46,294 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:47:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 06:47:46,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403304760] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:46,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:47:46,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 8] total 21 [2023-11-23 06:47:46,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692647262] [2023-11-23 06:47:46,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:46,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:47:46,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:46,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:47:46,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2023-11-23 06:47:46,410 INFO L87 Difference]: Start difference. First operand 151 states and 205 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 06:47:47,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:47,257 INFO L93 Difference]: Finished difference Result 265 states and 358 transitions. [2023-11-23 06:47:47,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:47:47,258 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 99 [2023-11-23 06:47:47,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:47,259 INFO L225 Difference]: With dead ends: 265 [2023-11-23 06:47:47,259 INFO L226 Difference]: Without dead ends: 149 [2023-11-23 06:47:47,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 214 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2023-11-23 06:47:47,260 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 213 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:47,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 796 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:47:47,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-23 06:47:47,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2023-11-23 06:47:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 87 states have (on average 1.206896551724138) internal successors, (105), 88 states have internal predecessors, (105), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-23 06:47:47,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 200 transitions. [2023-11-23 06:47:47,289 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 200 transitions. Word has length 99 [2023-11-23 06:47:47,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:47,290 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 200 transitions. [2023-11-23 06:47:47,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 7 states have internal predecessors, (41), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 06:47:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 200 transitions. [2023-11-23 06:47:47,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 06:47:47,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:47,295 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-23 06:47:47,327 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 06:47:47,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:47,495 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:47,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:47,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2094048883, now seen corresponding path program 1 times [2023-11-23 06:47:47,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:47,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271232105] [2023-11-23 06:47:47,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:47,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:47:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:47:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:47:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:47:48,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:47:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:47:48,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:47:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:47:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:47:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 06:47:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 06:47:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:47:48,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:48,428 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 06:47:48,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:48,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271232105] [2023-11-23 06:47:48,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271232105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:48,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:47:48,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:47:48,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904756465] [2023-11-23 06:47:48,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:48,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:47:48,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:48,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:47:48,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:47:48,431 INFO L87 Difference]: Start difference. First operand 149 states and 200 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:47:49,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:47:49,639 INFO L93 Difference]: Finished difference Result 285 states and 387 transitions. [2023-11-23 06:47:49,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:47:49,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 101 [2023-11-23 06:47:49,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:47:49,641 INFO L225 Difference]: With dead ends: 285 [2023-11-23 06:47:49,641 INFO L226 Difference]: Without dead ends: 177 [2023-11-23 06:47:49,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:47:49,642 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 157 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:47:49,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 307 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:47:49,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-23 06:47:49,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 169. [2023-11-23 06:47:49,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 103 states have internal predecessors, (124), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (56), 51 states have call predecessors, (56), 51 states have call successors, (56) [2023-11-23 06:47:49,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 232 transitions. [2023-11-23 06:47:49,661 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 232 transitions. Word has length 101 [2023-11-23 06:47:49,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:47:49,662 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 232 transitions. [2023-11-23 06:47:49,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 7 states have internal predecessors, (43), 3 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:47:49,662 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 232 transitions. [2023-11-23 06:47:49,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-23 06:47:49,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:47:49,663 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2023-11-23 06:47:49,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 06:47:49,663 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:47:49,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:47:49,664 INFO L85 PathProgramCache]: Analyzing trace with hash -497141525, now seen corresponding path program 1 times [2023-11-23 06:47:49,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:47:49,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276237697] [2023-11-23 06:47:49,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:49,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:47:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:47:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:47:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:47:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:47:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:47:50,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:47:50,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:47:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 06:47:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:47:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:47:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 06:47:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 06:47:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 06:47:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:50,803 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-23 06:47:50,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:47:50,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276237697] [2023-11-23 06:47:50,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276237697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:47:50,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397712157] [2023-11-23 06:47:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:47:50,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:47:50,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:47:50,805 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 06:47:50,838 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 06:47:51,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:47:51,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 06:47:51,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:47:51,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:47:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 06:47:51,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:47:51,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [397712157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:47:51,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:47:51,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2023-11-23 06:47:51,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480993998] [2023-11-23 06:47:51,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:47:51,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:47:51,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:47:51,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:47:51,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2023-11-23 06:47:51,539 INFO L87 Difference]: Start difference. First operand 169 states and 232 transitions. Second operand has 11 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-23 06:47:54,479 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 06:47:56,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:47:58,520 WARN L539 Checker$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 06:48:01,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:03,247 WARN L539 Checker$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 06:48:03,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:03,283 INFO L93 Difference]: Finished difference Result 417 states and 567 transitions. [2023-11-23 06:48:03,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:48:03,284 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 105 [2023-11-23 06:48:03,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:03,286 INFO L225 Difference]: With dead ends: 417 [2023-11-23 06:48:03,286 INFO L226 Difference]: Without dead ends: 261 [2023-11-23 06:48:03,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2023-11-23 06:48:03,290 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 185 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 8 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:03,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 956 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 612 Invalid, 5 Unknown, 0 Unchecked, 11.6s Time] [2023-11-23 06:48:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-23 06:48:03,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 256. [2023-11-23 06:48:03,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 159 states have (on average 1.220125786163522) internal successors, (194), 162 states have internal predecessors, (194), 72 states have call successors, (72), 22 states have call predecessors, (72), 24 states have return successors, (81), 71 states have call predecessors, (81), 70 states have call successors, (81) [2023-11-23 06:48:03,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 347 transitions. [2023-11-23 06:48:03,315 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 347 transitions. Word has length 105 [2023-11-23 06:48:03,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:03,316 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 347 transitions. [2023-11-23 06:48:03,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-23 06:48:03,316 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 347 transitions. [2023-11-23 06:48:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 06:48:03,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:03,317 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:03,335 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 06:48:03,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:03,532 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:03,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:03,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1526548445, now seen corresponding path program 1 times [2023-11-23 06:48:03,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:03,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395968297] [2023-11-23 06:48:03,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:03,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:48:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:48:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:48:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:48:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:48:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:48:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:48:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:48:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 06:48:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 06:48:04,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:04,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395968297] [2023-11-23 06:48:04,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395968297] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:04,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055449433] [2023-11-23 06:48:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:04,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:04,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:04,257 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 06:48:04,258 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 06:48:04,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:04,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 06:48:04,702 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:04,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:48:05,371 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-23 06:48:05,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:05,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055449433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:05,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:05,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9] total 20 [2023-11-23 06:48:05,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271681429] [2023-11-23 06:48:05,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:05,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 06:48:05,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:05,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 06:48:05,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:48:05,373 INFO L87 Difference]: Start difference. First operand 256 states and 347 transitions. Second operand has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 06:48:08,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:10,513 WARN L539 Checker$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 06:48:12,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:15,089 WARN L539 Checker$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 06:48:17,378 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 06:48:17,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:17,459 INFO L93 Difference]: Finished difference Result 474 states and 642 transitions. [2023-11-23 06:48:17,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:48:17,460 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 109 [2023-11-23 06:48:17,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:17,461 INFO L225 Difference]: With dead ends: 474 [2023-11-23 06:48:17,461 INFO L226 Difference]: Without dead ends: 255 [2023-11-23 06:48:17,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 114 SyntacticMatches, 12 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2023-11-23 06:48:17,463 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 184 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 986 mSolverCounterSat, 68 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 986 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:17,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1422 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 986 Invalid, 5 Unknown, 0 Unchecked, 12.0s Time] [2023-11-23 06:48:17,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-23 06:48:17,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2023-11-23 06:48:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 157 states have (on average 1.21656050955414) internal successors, (191), 159 states have internal predecessors, (191), 72 states have call successors, (72), 22 states have call predecessors, (72), 23 states have return successors, (76), 71 states have call predecessors, (76), 70 states have call successors, (76) [2023-11-23 06:48:17,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 339 transitions. [2023-11-23 06:48:17,481 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 339 transitions. Word has length 109 [2023-11-23 06:48:17,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:17,481 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 339 transitions. [2023-11-23 06:48:17,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 06:48:17,481 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 339 transitions. [2023-11-23 06:48:17,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 06:48:17,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:17,482 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:17,500 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 06:48:17,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:17,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:17,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:17,699 INFO L85 PathProgramCache]: Analyzing trace with hash -669379861, now seen corresponding path program 1 times [2023-11-23 06:48:17,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:17,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621784239] [2023-11-23 06:48:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:17,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:18,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:48:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:48:18,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:48:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-23 06:48:18,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:48:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:48:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 06:48:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 06:48:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:48:18,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,430 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-23 06:48:18,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:18,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621784239] [2023-11-23 06:48:18,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621784239] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:18,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918099040] [2023-11-23 06:48:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:18,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:18,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:18,436 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 06:48:18,449 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 06:48:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:18,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:48:18,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:18,960 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 06:48:18,960 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:18,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918099040] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:18,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:18,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 14 [2023-11-23 06:48:18,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398177377] [2023-11-23 06:48:18,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:18,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:48:18,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:18,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:48:18,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:48:18,962 INFO L87 Difference]: Start difference. First operand 253 states and 339 transitions. Second operand has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 06:48:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:19,895 INFO L93 Difference]: Finished difference Result 495 states and 669 transitions. [2023-11-23 06:48:19,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:48:19,895 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2023-11-23 06:48:19,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:19,897 INFO L225 Difference]: With dead ends: 495 [2023-11-23 06:48:19,897 INFO L226 Difference]: Without dead ends: 261 [2023-11-23 06:48:19,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:48:19,898 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 13 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:19,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1342 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:48:19,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-23 06:48:19,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 257. [2023-11-23 06:48:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 160 states have (on average 1.2125) internal successors, (194), 163 states have internal predecessors, (194), 72 states have call successors, (72), 22 states have call predecessors, (72), 24 states have return successors, (81), 71 states have call predecessors, (81), 70 states have call successors, (81) [2023-11-23 06:48:19,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 347 transitions. [2023-11-23 06:48:19,936 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 347 transitions. Word has length 113 [2023-11-23 06:48:19,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:19,936 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 347 transitions. [2023-11-23 06:48:19,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 06:48:19,937 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 347 transitions. [2023-11-23 06:48:19,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-23 06:48:19,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:19,937 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:19,955 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 06:48:20,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:20,153 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:20,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:20,154 INFO L85 PathProgramCache]: Analyzing trace with hash 877996038, now seen corresponding path program 1 times [2023-11-23 06:48:20,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:20,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549327787] [2023-11-23 06:48:20,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:20,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:20,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:20,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:20,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:20,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:20,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:20,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:20,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:21,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:21,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:48:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:21,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:48:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:21,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:48:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:21,204 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-23 06:48:21,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:21,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549327787] [2023-11-23 06:48:21,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549327787] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:21,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642868402] [2023-11-23 06:48:21,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:21,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:21,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:21,208 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 06:48:21,238 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 06:48:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:21,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:48:21,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-23 06:48:21,742 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642868402] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:21,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:21,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2023-11-23 06:48:21,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506756273] [2023-11-23 06:48:21,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:21,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:48:21,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:21,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:48:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2023-11-23 06:48:21,743 INFO L87 Difference]: Start difference. First operand 257 states and 347 transitions. Second operand has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:48:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:22,809 INFO L93 Difference]: Finished difference Result 466 states and 626 transitions. [2023-11-23 06:48:22,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:48:22,810 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 115 [2023-11-23 06:48:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:22,811 INFO L225 Difference]: With dead ends: 466 [2023-11-23 06:48:22,811 INFO L226 Difference]: Without dead ends: 269 [2023-11-23 06:48:22,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2023-11-23 06:48:22,814 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 13 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1375 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:22,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1375 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 06:48:22,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-23 06:48:22,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 265. [2023-11-23 06:48:22,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 166 states have (on average 1.2048192771084338) internal successors, (200), 171 states have internal predecessors, (200), 72 states have call successors, (72), 22 states have call predecessors, (72), 26 states have return successors, (86), 71 states have call predecessors, (86), 70 states have call successors, (86) [2023-11-23 06:48:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 358 transitions. [2023-11-23 06:48:22,839 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 358 transitions. Word has length 115 [2023-11-23 06:48:22,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:22,839 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 358 transitions. [2023-11-23 06:48:22,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.857142857142857) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:48:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 358 transitions. [2023-11-23 06:48:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 06:48:22,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:22,841 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:22,861 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 06:48:23,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:23,059 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:23,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:23,059 INFO L85 PathProgramCache]: Analyzing trace with hash -404916735, now seen corresponding path program 1 times [2023-11-23 06:48:23,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:23,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887783320] [2023-11-23 06:48:23,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:23,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:23,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:23,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:23,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:23,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:23,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:23,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:23,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:23,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:24,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:48:24,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:48:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:48:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-23 06:48:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887783320] [2023-11-23 06:48:24,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887783320] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959946233] [2023-11-23 06:48:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:24,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:24,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:24,197 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 06:48:24,221 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 06:48:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:24,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 2732 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-23 06:48:24,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 80 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 06:48:25,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:48:25,829 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 06:48:25,829 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 20 treesize of output 19 [2023-11-23 06:48:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 06:48:25,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959946233] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:48:25,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:48:25,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 33 [2023-11-23 06:48:25,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340500195] [2023-11-23 06:48:25,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:48:25,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-23 06:48:25,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:25,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-23 06:48:25,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 06:48:25,858 INFO L87 Difference]: Start difference. First operand 265 states and 358 transitions. Second operand has 33 states, 31 states have (on average 4.838709677419355) internal successors, (150), 29 states have internal predecessors, (150), 9 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (36), 7 states have call predecessors, (36), 9 states have call successors, (36) [2023-11-23 06:48:33,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:33,047 INFO L93 Difference]: Finished difference Result 947 states and 1401 transitions. [2023-11-23 06:48:33,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-23 06:48:33,048 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 4.838709677419355) internal successors, (150), 29 states have internal predecessors, (150), 9 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (36), 7 states have call predecessors, (36), 9 states have call successors, (36) Word has length 117 [2023-11-23 06:48:33,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:33,051 INFO L225 Difference]: With dead ends: 947 [2023-11-23 06:48:33,052 INFO L226 Difference]: Without dead ends: 717 [2023-11-23 06:48:33,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 239 SyntacticMatches, 11 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1573 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=641, Invalid=5839, Unknown=0, NotChecked=0, Total=6480 [2023-11-23 06:48:33,057 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 690 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 5157 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 5676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 5157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:33,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 677 Invalid, 5676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 5157 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2023-11-23 06:48:33,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-11-23 06:48:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 566. [2023-11-23 06:48:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 343 states have (on average 1.1603498542274053) internal successors, (398), 352 states have internal predecessors, (398), 173 states have call successors, (173), 43 states have call predecessors, (173), 49 states have return successors, (213), 170 states have call predecessors, (213), 169 states have call successors, (213) [2023-11-23 06:48:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 784 transitions. [2023-11-23 06:48:33,103 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 784 transitions. Word has length 117 [2023-11-23 06:48:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:33,103 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 784 transitions. [2023-11-23 06:48:33,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 4.838709677419355) internal successors, (150), 29 states have internal predecessors, (150), 9 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (36), 7 states have call predecessors, (36), 9 states have call successors, (36) [2023-11-23 06:48:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 784 transitions. [2023-11-23 06:48:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 06:48:33,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:33,105 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:33,125 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 06:48:33,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 06:48:33,316 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:33,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:33,317 INFO L85 PathProgramCache]: Analyzing trace with hash -43201035, now seen corresponding path program 1 times [2023-11-23 06:48:33,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:33,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994828286] [2023-11-23 06:48:33,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:33,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:33,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 06:48:33,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:48:33,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 06:48:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 06:48:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:48:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 06:48:33,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:33,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994828286] [2023-11-23 06:48:33,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994828286] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:33,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993846607] [2023-11-23 06:48:33,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:33,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:33,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:33,951 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 06:48:33,952 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 06:48:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:34,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-23 06:48:34,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:34,430 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 06:48:34,433 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 06:48:35,030 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-23 06:48:35,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:35,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993846607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:35,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:35,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 20 [2023-11-23 06:48:35,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557962137] [2023-11-23 06:48:35,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:35,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:48:35,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:35,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:48:35,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:48:35,047 INFO L87 Difference]: Start difference. First operand 566 states and 784 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 06:48:37,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:37,499 INFO L93 Difference]: Finished difference Result 1572 states and 2169 transitions. [2023-11-23 06:48:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 06:48:37,510 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 121 [2023-11-23 06:48:37,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:37,516 INFO L225 Difference]: With dead ends: 1572 [2023-11-23 06:48:37,517 INFO L226 Difference]: Without dead ends: 1117 [2023-11-23 06:48:37,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 130 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2023-11-23 06:48:37,520 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 184 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1370 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:37,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1370 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-23 06:48:37,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2023-11-23 06:48:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 1038. [2023-11-23 06:48:37,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1038 states, 633 states have (on average 1.161137440758294) internal successors, (735), 651 states have internal predecessors, (735), 319 states have call successors, (319), 74 states have call predecessors, (319), 85 states have return successors, (391), 312 states have call predecessors, (391), 312 states have call successors, (391) [2023-11-23 06:48:37,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1445 transitions. [2023-11-23 06:48:37,614 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1445 transitions. Word has length 121 [2023-11-23 06:48:37,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:37,615 INFO L495 AbstractCegarLoop]: Abstraction has 1038 states and 1445 transitions. [2023-11-23 06:48:37,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-11-23 06:48:37,615 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1445 transitions. [2023-11-23 06:48:37,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 06:48:37,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:37,618 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:48:37,636 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 06:48:37,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:37,823 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:37,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash 379500791, now seen corresponding path program 1 times [2023-11-23 06:48:37,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:37,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537299219] [2023-11-23 06:48:37,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:37,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:37,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:37,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:37,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:38,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:38,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:38,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:38,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:38,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 06:48:38,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:38,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:48:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:38,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 06:48:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 06:48:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:38,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:48:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-23 06:48:38,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:38,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537299219] [2023-11-23 06:48:38,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537299219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:38,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:48:38,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:48:38,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724417959] [2023-11-23 06:48:38,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:38,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:48:38,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:38,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:48:38,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:48:38,061 INFO L87 Difference]: Start difference. First operand 1038 states and 1445 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:48:38,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:38,934 INFO L93 Difference]: Finished difference Result 1737 states and 2396 transitions. [2023-11-23 06:48:38,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:48:38,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2023-11-23 06:48:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:38,939 INFO L225 Difference]: With dead ends: 1737 [2023-11-23 06:48:38,940 INFO L226 Difference]: Without dead ends: 898 [2023-11-23 06:48:38,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:48:38,943 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 109 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:38,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 186 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:48:38,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-11-23 06:48:39,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 870. [2023-11-23 06:48:39,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 870 states, 535 states have (on average 1.1495327102803738) internal successors, (615), 547 states have internal predecessors, (615), 265 states have call successors, (265), 62 states have call predecessors, (265), 69 states have return successors, (315), 260 states have call predecessors, (315), 259 states have call successors, (315) [2023-11-23 06:48:39,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1195 transitions. [2023-11-23 06:48:39,013 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1195 transitions. Word has length 121 [2023-11-23 06:48:39,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:39,013 INFO L495 AbstractCegarLoop]: Abstraction has 870 states and 1195 transitions. [2023-11-23 06:48:39,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 06:48:39,014 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1195 transitions. [2023-11-23 06:48:39,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-23 06:48:39,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:39,016 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 06:48:39,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 06:48:39,016 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:39,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:39,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1868996958, now seen corresponding path program 1 times [2023-11-23 06:48:39,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:39,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822028293] [2023-11-23 06:48:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:39,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:39,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:39,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:48:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-23 06:48:39,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:48:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:48:39,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 06:48:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:39,660 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2023-11-23 06:48:39,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:39,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822028293] [2023-11-23 06:48:39,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822028293] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:39,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983560429] [2023-11-23 06:48:39,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:39,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:39,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:39,662 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 06:48:39,664 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 06:48:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:40,111 INFO L262 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:48:40,114 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:40,147 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-23 06:48:40,147 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:48:40,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983560429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:48:40,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:48:40,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-23 06:48:40,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508042616] [2023-11-23 06:48:40,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:48:40,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:48:40,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:40,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:48:40,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:48:40,150 INFO L87 Difference]: Start difference. First operand 870 states and 1195 transitions. Second operand has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:48:41,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:48:41,110 INFO L93 Difference]: Finished difference Result 1589 states and 2178 transitions. [2023-11-23 06:48:41,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:48:41,111 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2023-11-23 06:48:41,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:48:41,115 INFO L225 Difference]: With dead ends: 1589 [2023-11-23 06:48:41,115 INFO L226 Difference]: Without dead ends: 886 [2023-11-23 06:48:41,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:48:41,119 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 13 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1325 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:48:41,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1325 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:48:41,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2023-11-23 06:48:41,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 882. [2023-11-23 06:48:41,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 544 states have (on average 1.1470588235294117) internal successors, (624), 559 states have internal predecessors, (624), 265 states have call successors, (265), 62 states have call predecessors, (265), 72 states have return successors, (327), 260 states have call predecessors, (327), 259 states have call successors, (327) [2023-11-23 06:48:41,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1216 transitions. [2023-11-23 06:48:41,190 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1216 transitions. Word has length 126 [2023-11-23 06:48:41,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:48:41,191 INFO L495 AbstractCegarLoop]: Abstraction has 882 states and 1216 transitions. [2023-11-23 06:48:41,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 3 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2023-11-23 06:48:41,191 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1216 transitions. [2023-11-23 06:48:41,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 06:48:41,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:48:41,193 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 06:48:41,230 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 06:48:41,431 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,SelfDestructingSolverStorable12 [2023-11-23 06:48:41,431 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:48:41,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:48:41,432 INFO L85 PathProgramCache]: Analyzing trace with hash -615392585, now seen corresponding path program 2 times [2023-11-23 06:48:41,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:48:41,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487161649] [2023-11-23 06:48:41,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:48:41,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:48:41,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:48:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:48:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:48:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:48:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:48:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:48:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:48:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:48:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:48:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:48:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:48:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:48:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:48:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:48:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:48:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2023-11-23 06:48:41,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:48:41,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487161649] [2023-11-23 06:48:41,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487161649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:48:41,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035167203] [2023-11-23 06:48:41,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:48:41,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:48:41,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:48:41,997 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 06:48:42,040 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 06:48:42,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:48:42,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:48:42,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 06:48:42,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:48:43,125 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 102 proven. 14 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 06:48:43,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:48:43,388 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 06:48:43,388 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 23 treesize of output 18 [2023-11-23 06:48:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 06:48:43,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035167203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:48:43,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:48:43,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 11] total 24 [2023-11-23 06:48:43,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900663794] [2023-11-23 06:48:43,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:48:43,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-23 06:48:43,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:48:43,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-23 06:48:43,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2023-11-23 06:48:43,412 INFO L87 Difference]: Start difference. First operand 882 states and 1216 transitions. Second operand has 24 states, 22 states have (on average 6.863636363636363) internal successors, (151), 21 states have internal predecessors, (151), 7 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (36), 5 states have call predecessors, (36), 7 states have call successors, (36) [2023-11-23 06:48:46,263 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 06:48:48,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:50,799 WARN L539 Checker$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 06:48:52,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:48:55,288 WARN L539 Checker$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 06:48:57,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:01,671 WARN L539 Checker$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 06:49:03,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:05,804 WARN L539 Checker$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 06:49:06,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:06,224 INFO L93 Difference]: Finished difference Result 2902 states and 4292 transitions. [2023-11-23 06:49:06,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 06:49:06,228 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 6.863636363636363) internal successors, (151), 21 states have internal predecessors, (151), 7 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (36), 5 states have call predecessors, (36), 7 states have call successors, (36) Word has length 128 [2023-11-23 06:49:06,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:06,239 INFO L225 Difference]: With dead ends: 2902 [2023-11-23 06:49:06,239 INFO L226 Difference]: Without dead ends: 2039 [2023-11-23 06:49:06,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 264 SyntacticMatches, 11 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=254, Invalid=1386, Unknown=0, NotChecked=0, Total=1640 [2023-11-23 06:49:06,245 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 441 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 4690 mSolverCounterSat, 184 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 4883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 4690 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:06,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 812 Invalid, 4883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 4690 Invalid, 9 Unknown, 0 Unchecked, 22.2s Time] [2023-11-23 06:49:06,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2023-11-23 06:49:06,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 1834. [2023-11-23 06:49:06,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1150 states have (on average 1.1321739130434783) internal successors, (1302), 1179 states have internal predecessors, (1302), 551 states have call successors, (551), 116 states have call predecessors, (551), 132 states have return successors, (733), 538 states have call predecessors, (733), 541 states have call successors, (733) [2023-11-23 06:49:06,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2586 transitions. [2023-11-23 06:49:06,449 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2586 transitions. Word has length 128 [2023-11-23 06:49:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:06,450 INFO L495 AbstractCegarLoop]: Abstraction has 1834 states and 2586 transitions. [2023-11-23 06:49:06,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 6.863636363636363) internal successors, (151), 21 states have internal predecessors, (151), 7 states have call successors, (40), 6 states have call predecessors, (40), 6 states have return successors, (36), 5 states have call predecessors, (36), 7 states have call successors, (36) [2023-11-23 06:49:06,451 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2586 transitions. [2023-11-23 06:49:06,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 06:49:06,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:06,455 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:06,491 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 06:49:06,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 06:49:06,672 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:06,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:06,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1757652727, now seen corresponding path program 1 times [2023-11-23 06:49:06,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:06,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289734211] [2023-11-23 06:49:06,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:06,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:06,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:06,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:49:07,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:49:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:49:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:49:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:49:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:49:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:49:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:49:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:49:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-23 06:49:07,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:07,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289734211] [2023-11-23 06:49:07,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289734211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:07,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506221460] [2023-11-23 06:49:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:07,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:07,084 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 06:49:07,085 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 06:49:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:07,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:49:07,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:07,536 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-23 06:49:07,536 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:49:07,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506221460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:07,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:49:07,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 06:49:07,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035706438] [2023-11-23 06:49:07,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:07,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:49:07,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:07,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:49:07,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:49:07,538 INFO L87 Difference]: Start difference. First operand 1834 states and 2586 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:49:08,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:08,009 INFO L93 Difference]: Finished difference Result 2240 states and 3083 transitions. [2023-11-23 06:49:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:49:08,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2023-11-23 06:49:08,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:08,013 INFO L225 Difference]: With dead ends: 2240 [2023-11-23 06:49:08,013 INFO L226 Difference]: Without dead ends: 890 [2023-11-23 06:49:08,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:49:08,018 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 9 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:08,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 542 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:49:08,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2023-11-23 06:49:08,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 885. [2023-11-23 06:49:08,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 549 states have (on average 1.1238615664845173) internal successors, (617), 561 states have internal predecessors, (617), 265 states have call successors, (265), 63 states have call predecessors, (265), 70 states have return successors, (311), 260 states have call predecessors, (311), 259 states have call successors, (311) [2023-11-23 06:49:08,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1193 transitions. [2023-11-23 06:49:08,089 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1193 transitions. Word has length 128 [2023-11-23 06:49:08,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:08,089 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1193 transitions. [2023-11-23 06:49:08,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:49:08,089 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1193 transitions. [2023-11-23 06:49:08,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 06:49:08,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:08,091 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:08,109 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 06:49:08,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 06:49:08,307 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:08,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:08,307 INFO L85 PathProgramCache]: Analyzing trace with hash -215242637, now seen corresponding path program 1 times [2023-11-23 06:49:08,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:08,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775673564] [2023-11-23 06:49:08,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:08,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:49:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:49:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:49:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:49:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:49:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:49:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:49:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:49:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:49:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:08,610 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-23 06:49:08,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:08,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775673564] [2023-11-23 06:49:08,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775673564] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:08,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199598836] [2023-11-23 06:49:08,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:08,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:08,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:08,611 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 06:49:08,613 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 06:49:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:09,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 2762 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:49:09,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:09,064 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 06:49:09,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:49:09,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199598836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:09,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:49:09,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 06:49:09,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639318160] [2023-11-23 06:49:09,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:09,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:49:09,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:09,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:49:09,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:49:09,066 INFO L87 Difference]: Start difference. First operand 885 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:49:09,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:09,340 INFO L93 Difference]: Finished difference Result 1759 states and 2444 transitions. [2023-11-23 06:49:09,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:49:09,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2023-11-23 06:49:09,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:09,344 INFO L225 Difference]: With dead ends: 1759 [2023-11-23 06:49:09,344 INFO L226 Difference]: Without dead ends: 898 [2023-11-23 06:49:09,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:49:09,348 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 35 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:09,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 545 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:49:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2023-11-23 06:49:09,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 885. [2023-11-23 06:49:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 549 states have (on average 1.1092896174863387) internal successors, (609), 561 states have internal predecessors, (609), 265 states have call successors, (265), 63 states have call predecessors, (265), 70 states have return successors, (311), 260 states have call predecessors, (311), 259 states have call successors, (311) [2023-11-23 06:49:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1185 transitions. [2023-11-23 06:49:09,425 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1185 transitions. Word has length 128 [2023-11-23 06:49:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:09,426 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1185 transitions. [2023-11-23 06:49:09,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 06:49:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1185 transitions. [2023-11-23 06:49:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-11-23 06:49:09,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:09,428 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:09,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 06:49:09,641 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,SelfDestructingSolverStorable15 [2023-11-23 06:49:09,641 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:09,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:09,641 INFO L85 PathProgramCache]: Analyzing trace with hash -995162255, now seen corresponding path program 1 times [2023-11-23 06:49:09,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:09,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028269566] [2023-11-23 06:49:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:09,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:10,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:11,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:49:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:49:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:49:11,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:49:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:49:11,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:49:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:49:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:49:11,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:49:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,079 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 06:49:12,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:12,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028269566] [2023-11-23 06:49:12,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028269566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:12,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385407035] [2023-11-23 06:49:12,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:12,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:12,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:12,088 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 06:49:12,093 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 06:49:12,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:12,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 2747 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-23 06:49:12,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:12,996 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 06:49:13,023 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 06:49:14,207 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 66 proven. 19 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 06:49:14,207 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:49:14,755 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 13 proven. 28 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2023-11-23 06:49:14,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385407035] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:49:14,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:49:14,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 13] total 37 [2023-11-23 06:49:14,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601769572] [2023-11-23 06:49:14,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:49:14,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-23 06:49:14,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:14,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-23 06:49:14,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 06:49:14,759 INFO L87 Difference]: Start difference. First operand 885 states and 1185 transitions. Second operand has 37 states, 36 states have (on average 4.638888888888889) internal successors, (167), 34 states have internal predecessors, (167), 9 states have call successors, (44), 6 states have call predecessors, (44), 7 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) [2023-11-23 06:49:17,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:20,673 WARN L539 Checker$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 06:49:22,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:24,838 WARN L539 Checker$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 06:49:29,503 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 06:49:30,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:30,537 INFO L93 Difference]: Finished difference Result 1291 states and 1699 transitions. [2023-11-23 06:49:30,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-23 06:49:30,538 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.638888888888889) internal successors, (167), 34 states have internal predecessors, (167), 9 states have call successors, (44), 6 states have call predecessors, (44), 7 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) Word has length 128 [2023-11-23 06:49:30,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:30,542 INFO L225 Difference]: With dead ends: 1291 [2023-11-23 06:49:30,542 INFO L226 Difference]: Without dead ends: 939 [2023-11-23 06:49:30,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 250 SyntacticMatches, 20 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 924 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=445, Invalid=2525, Unknown=0, NotChecked=0, Total=2970 [2023-11-23 06:49:30,544 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 432 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 3821 mSolverCounterSat, 227 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 4053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 3821 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:30,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 512 Invalid, 4053 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [227 Valid, 3821 Invalid, 5 Unknown, 0 Unchecked, 15.0s Time] [2023-11-23 06:49:30,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2023-11-23 06:49:30,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 877. [2023-11-23 06:49:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 543 states have (on average 1.1068139963167587) internal successors, (601), 553 states have internal predecessors, (601), 265 states have call successors, (265), 63 states have call predecessors, (265), 68 states have return successors, (301), 260 states have call predecessors, (301), 259 states have call successors, (301) [2023-11-23 06:49:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1167 transitions. [2023-11-23 06:49:30,686 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1167 transitions. Word has length 128 [2023-11-23 06:49:30,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:30,687 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1167 transitions. [2023-11-23 06:49:30,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.638888888888889) internal successors, (167), 34 states have internal predecessors, (167), 9 states have call successors, (44), 6 states have call predecessors, (44), 7 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) [2023-11-23 06:49:30,687 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1167 transitions. [2023-11-23 06:49:30,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-23 06:49:30,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:30,694 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:30,713 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-23 06:49:30,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:30,908 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:30,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:30,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1128200756, now seen corresponding path program 1 times [2023-11-23 06:49:30,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:30,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959854702] [2023-11-23 06:49:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:30,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:31,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:49:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:49:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:49:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:49:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:49:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:49:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:49:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:49:31,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:49:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-23 06:49:31,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:31,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959854702] [2023-11-23 06:49:31,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959854702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:49:31,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:49:31,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 06:49:31,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418452129] [2023-11-23 06:49:31,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:49:31,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:49:31,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:31,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:49:31,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:49:31,526 INFO L87 Difference]: Start difference. First operand 877 states and 1167 transitions. Second operand has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:49:33,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:33,140 INFO L93 Difference]: Finished difference Result 919 states and 1216 transitions. [2023-11-23 06:49:33,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:49:33,141 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 130 [2023-11-23 06:49:33,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:33,158 INFO L225 Difference]: With dead ends: 919 [2023-11-23 06:49:33,172 INFO L226 Difference]: Without dead ends: 917 [2023-11-23 06:49:33,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:49:33,173 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 143 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 1380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:33,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 467 Invalid, 1380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 06:49:33,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 917 states. [2023-11-23 06:49:33,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 917 to 911. [2023-11-23 06:49:33,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 564 states have (on average 1.1028368794326242) internal successors, (622), 576 states have internal predecessors, (622), 271 states have call successors, (271), 68 states have call predecessors, (271), 75 states have return successors, (311), 266 states have call predecessors, (311), 265 states have call successors, (311) [2023-11-23 06:49:33,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1204 transitions. [2023-11-23 06:49:33,287 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1204 transitions. Word has length 130 [2023-11-23 06:49:33,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:33,288 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1204 transitions. [2023-11-23 06:49:33,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.444444444444445) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:49:33,288 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1204 transitions. [2023-11-23 06:49:33,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-23 06:49:33,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:33,291 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:33,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 06:49:33,291 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:33,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:33,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2019005386, now seen corresponding path program 1 times [2023-11-23 06:49:33,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:33,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113684503] [2023-11-23 06:49:33,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:33,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:49:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:49:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:49:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:49:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:49:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:49:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:49:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:49:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:49:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 31 proven. 32 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 06:49:35,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:35,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113684503] [2023-11-23 06:49:35,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113684503] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:35,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743321605] [2023-11-23 06:49:35,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:35,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:35,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:35,808 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 06:49:35,809 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 06:49:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:36,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 2757 conjuncts, 61 conjunts are in the unsatisfiable core [2023-11-23 06:49:36,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:49:36,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:49:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 78 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-23 06:49:38,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:49:39,200 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 32 treesize of output 26 [2023-11-23 06:49:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-11-23 06:49:39,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743321605] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:49:39,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:49:39,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 20] total 57 [2023-11-23 06:49:39,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765084012] [2023-11-23 06:49:39,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:49:39,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-23 06:49:39,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:49:39,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-23 06:49:39,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=3038, Unknown=0, NotChecked=0, Total=3192 [2023-11-23 06:49:39,231 INFO L87 Difference]: Start difference. First operand 911 states and 1204 transitions. Second operand has 57 states, 46 states have (on average 3.5) internal successors, (161), 46 states have internal predecessors, (161), 12 states have call successors, (44), 7 states have call predecessors, (44), 11 states have return successors, (40), 13 states have call predecessors, (40), 10 states have call successors, (40) [2023-11-23 06:49:43,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:47,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:49:49,825 WARN L539 Checker$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 06:49:56,692 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 06:49:58,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:49:58,615 INFO L93 Difference]: Finished difference Result 935 states and 1227 transitions. [2023-11-23 06:49:58,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-11-23 06:49:58,615 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 46 states have (on average 3.5) internal successors, (161), 46 states have internal predecessors, (161), 12 states have call successors, (44), 7 states have call predecessors, (44), 11 states have return successors, (40), 13 states have call predecessors, (40), 10 states have call successors, (40) Word has length 130 [2023-11-23 06:49:58,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:49:58,619 INFO L225 Difference]: With dead ends: 935 [2023-11-23 06:49:58,619 INFO L226 Difference]: Without dead ends: 933 [2023-11-23 06:49:58,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 243 SyntacticMatches, 19 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2481 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=913, Invalid=10643, Unknown=0, NotChecked=0, Total=11556 [2023-11-23 06:49:58,622 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 499 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 7777 mSolverCounterSat, 290 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 8071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 7777 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:49:58,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 1141 Invalid, 8071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 7777 Invalid, 4 Unknown, 0 Unchecked, 16.2s Time] [2023-11-23 06:49:58,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2023-11-23 06:49:58,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 906. [2023-11-23 06:49:58,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 564 states have (on average 1.1028368794326242) internal successors, (622), 576 states have internal predecessors, (622), 266 states have call successors, (266), 68 states have call predecessors, (266), 75 states have return successors, (306), 261 states have call predecessors, (306), 260 states have call successors, (306) [2023-11-23 06:49:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1194 transitions. [2023-11-23 06:49:58,737 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1194 transitions. Word has length 130 [2023-11-23 06:49:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:49:58,737 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1194 transitions. [2023-11-23 06:49:58,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 46 states have (on average 3.5) internal successors, (161), 46 states have internal predecessors, (161), 12 states have call successors, (44), 7 states have call predecessors, (44), 11 states have return successors, (40), 13 states have call predecessors, (40), 10 states have call successors, (40) [2023-11-23 06:49:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1194 transitions. [2023-11-23 06:49:58,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 06:49:58,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:49:58,739 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:49:58,757 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 06:49:58,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:58,952 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:49:58,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:49:58,952 INFO L85 PathProgramCache]: Analyzing trace with hash -2119807209, now seen corresponding path program 1 times [2023-11-23 06:49:58,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:49:58,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163456928] [2023-11-23 06:49:58,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:58,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:49:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:49:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:49:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:49:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:49:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:49:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:49:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:49:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:49:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:49:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:49:59,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:49:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 06:49:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 06:49:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 06:49:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:49:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 06:49:59,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:49:59,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163456928] [2023-11-23 06:49:59,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163456928] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:49:59,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918279647] [2023-11-23 06:49:59,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:49:59,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:49:59,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:49:59,573 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 06:49:59,574 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 06:50:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:00,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 2774 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 06:50:00,059 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:50:00,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:50:00,328 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-23 06:50:00,328 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:50:00,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918279647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:50:00,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:50:00,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [10] total 20 [2023-11-23 06:50:00,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576599651] [2023-11-23 06:50:00,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:50:00,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:50:00,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:50:00,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:50:00,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:50:00,329 INFO L87 Difference]: Start difference. First operand 906 states and 1194 transitions. Second operand has 12 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 06:50:02,667 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 06:50:05,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:07,365 WARN L539 Checker$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 06:50:09,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:11,405 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:13,437 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 06:50:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:50:14,207 INFO L93 Difference]: Finished difference Result 1408 states and 1838 transitions. [2023-11-23 06:50:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:50:14,208 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 133 [2023-11-23 06:50:14,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:50:14,213 INFO L225 Difference]: With dead ends: 1408 [2023-11-23 06:50:14,213 INFO L226 Difference]: Without dead ends: 942 [2023-11-23 06:50:14,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-11-23 06:50:14,240 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 165 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:50:14,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1425 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 669 Invalid, 6 Unknown, 0 Unchecked, 13.7s Time] [2023-11-23 06:50:14,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2023-11-23 06:50:14,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 926. [2023-11-23 06:50:14,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 579 states have (on average 1.1001727115716753) internal successors, (637), 593 states have internal predecessors, (637), 266 states have call successors, (266), 71 states have call predecessors, (266), 80 states have return successors, (312), 261 states have call predecessors, (312), 260 states have call successors, (312) [2023-11-23 06:50:14,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1215 transitions. [2023-11-23 06:50:14,416 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1215 transitions. Word has length 133 [2023-11-23 06:50:14,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:50:14,417 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1215 transitions. [2023-11-23 06:50:14,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 06:50:14,417 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1215 transitions. [2023-11-23 06:50:14,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 06:50:14,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:50:14,419 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:50:14,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 06:50:14,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:50:14,636 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:50:14,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:50:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1757763481, now seen corresponding path program 1 times [2023-11-23 06:50:14,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:50:14,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980446804] [2023-11-23 06:50:14,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:14,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:50:14,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:50:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:50:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:50:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:50:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:50:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:50:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:50:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:50:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:50:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:50:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 06:50:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 06:50:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 06:50:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,252 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2023-11-23 06:50:15,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:50:15,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980446804] [2023-11-23 06:50:15,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980446804] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:50:15,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299849340] [2023-11-23 06:50:15,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:15,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:50:15,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:50:15,255 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:50:15,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 06:50:15,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:15,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 2769 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-23 06:50:15,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:50:15,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:50:16,396 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 20 treesize of output 8 [2023-11-23 06:50:16,449 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 69 proven. 20 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-23 06:50:16,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:50:16,555 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 32 treesize of output 26 [2023-11-23 06:50:16,643 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-11-23 06:50:16,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299849340] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 06:50:16,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:50:16,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8, 21] total 28 [2023-11-23 06:50:16,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182784229] [2023-11-23 06:50:16,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:50:16,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 06:50:16,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:50:16,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 06:50:16,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2023-11-23 06:50:16,644 INFO L87 Difference]: Start difference. First operand 926 states and 1215 transitions. Second operand has 12 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 06:50:17,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:50:17,564 INFO L93 Difference]: Finished difference Result 936 states and 1224 transitions. [2023-11-23 06:50:17,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 06:50:17,565 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 133 [2023-11-23 06:50:17,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:50:17,568 INFO L225 Difference]: With dead ends: 936 [2023-11-23 06:50:17,568 INFO L226 Difference]: Without dead ends: 934 [2023-11-23 06:50:17,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 266 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=910, Unknown=0, NotChecked=0, Total=992 [2023-11-23 06:50:17,570 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 43 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:50:17,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1852 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 06:50:17,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2023-11-23 06:50:17,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 934. [2023-11-23 06:50:17,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 585 states have (on average 1.0991452991452992) internal successors, (643), 599 states have internal predecessors, (643), 266 states have call successors, (266), 73 states have call predecessors, (266), 82 states have return successors, (312), 261 states have call predecessors, (312), 260 states have call successors, (312) [2023-11-23 06:50:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1221 transitions. [2023-11-23 06:50:17,732 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1221 transitions. Word has length 133 [2023-11-23 06:50:17,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:50:17,733 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1221 transitions. [2023-11-23 06:50:17,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 5 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 06:50:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1221 transitions. [2023-11-23 06:50:17,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 06:50:17,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:50:17,735 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:50:17,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 06:50:17,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:50:17,952 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:50:17,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:50:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1918283444, now seen corresponding path program 1 times [2023-11-23 06:50:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:50:17,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373454463] [2023-11-23 06:50:17,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:50:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:50:18,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:50:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:50:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:50:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:50:18,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:50:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:50:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:18,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:50:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:50:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:50:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-23 06:50:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 06:50:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 06:50:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 06:50:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-23 06:50:18,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:50:18,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373454463] [2023-11-23 06:50:18,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373454463] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:50:18,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594169461] [2023-11-23 06:50:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:18,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:50:18,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:50:18,465 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:50:18,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 06:50:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:18,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-23 06:50:18,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:50:19,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:50:19,809 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 20 treesize of output 8 [2023-11-23 06:50:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 53 proven. 23 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 06:50:19,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:50:20,079 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 32 treesize of output 26 [2023-11-23 06:50:20,111 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-23 06:50:20,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594169461] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:50:20,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:50:20,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 20, 14] total 28 [2023-11-23 06:50:20,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873205882] [2023-11-23 06:50:20,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:50:20,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 06:50:20,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:50:20,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 06:50:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2023-11-23 06:50:20,117 INFO L87 Difference]: Start difference. First operand 934 states and 1221 transitions. Second operand has 28 states, 23 states have (on average 5.869565217391305) internal successors, (135), 21 states have internal predecessors, (135), 9 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (43), 9 states have call predecessors, (43), 8 states have call successors, (43) [2023-11-23 06:50:24,135 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 06:50:26,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:28,990 WARN L539 Checker$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 06:50:33,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:36,046 WARN L539 Checker$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 06:50:36,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:50:36,074 INFO L93 Difference]: Finished difference Result 1636 states and 2125 transitions. [2023-11-23 06:50:36,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-23 06:50:36,075 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 5.869565217391305) internal successors, (135), 21 states have internal predecessors, (135), 9 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (43), 9 states have call predecessors, (43), 8 states have call successors, (43) Word has length 139 [2023-11-23 06:50:36,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:50:36,078 INFO L225 Difference]: With dead ends: 1636 [2023-11-23 06:50:36,078 INFO L226 Difference]: Without dead ends: 934 [2023-11-23 06:50:36,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 271 SyntacticMatches, 22 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=246, Invalid=2304, Unknown=0, NotChecked=0, Total=2550 [2023-11-23 06:50:36,081 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 248 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 3587 mSolverCounterSat, 164 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 3756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 3587 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:50:36,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 639 Invalid, 3756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 3587 Invalid, 5 Unknown, 0 Unchecked, 15.3s Time] [2023-11-23 06:50:36,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2023-11-23 06:50:36,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 926. [2023-11-23 06:50:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 577 states have (on average 1.0901213171577122) internal successors, (629), 589 states have internal predecessors, (629), 266 states have call successors, (266), 75 states have call predecessors, (266), 82 states have return successors, (304), 261 states have call predecessors, (304), 260 states have call successors, (304) [2023-11-23 06:50:36,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1199 transitions. [2023-11-23 06:50:36,202 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1199 transitions. Word has length 139 [2023-11-23 06:50:36,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:50:36,202 INFO L495 AbstractCegarLoop]: Abstraction has 926 states and 1199 transitions. [2023-11-23 06:50:36,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 5.869565217391305) internal successors, (135), 21 states have internal predecessors, (135), 9 states have call successors, (48), 7 states have call predecessors, (48), 7 states have return successors, (43), 9 states have call predecessors, (43), 8 states have call successors, (43) [2023-11-23 06:50:36,203 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1199 transitions. [2023-11-23 06:50:36,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-23 06:50:36,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:50:36,204 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:50:36,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-23 06:50:36,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:50:36,421 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:50:36,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:50:36,421 INFO L85 PathProgramCache]: Analyzing trace with hash 872225069, now seen corresponding path program 1 times [2023-11-23 06:50:36,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:50:36,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91846404] [2023-11-23 06:50:36,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:36,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:50:36,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:50:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:50:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:50:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:50:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:50:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:50:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:50:36,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:50:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 06:50:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 06:50:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 06:50:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:50:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:50:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-23 06:50:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 06:50:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-23 06:50:36,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:50:36,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91846404] [2023-11-23 06:50:36,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91846404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:50:36,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:50:36,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:50:36,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512426180] [2023-11-23 06:50:36,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:50:36,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:50:36,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:50:36,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:50:36,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:50:36,938 INFO L87 Difference]: Start difference. First operand 926 states and 1199 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, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 06:50:38,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:50:38,436 INFO L93 Difference]: Finished difference Result 960 states and 1236 transitions. [2023-11-23 06:50:38,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:50:38,437 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, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2023-11-23 06:50:38,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:50:38,441 INFO L225 Difference]: With dead ends: 960 [2023-11-23 06:50:38,441 INFO L226 Difference]: Without dead ends: 958 [2023-11-23 06:50:38,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:50:38,442 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 119 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:50:38,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 371 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 06:50:38,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2023-11-23 06:50:38,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 952. [2023-11-23 06:50:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 594 states have (on average 1.0875420875420876) internal successors, (646), 607 states have internal predecessors, (646), 269 states have call successors, (269), 80 states have call predecessors, (269), 88 states have return successors, (309), 264 states have call predecessors, (309), 263 states have call successors, (309) [2023-11-23 06:50:38,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1224 transitions. [2023-11-23 06:50:38,568 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1224 transitions. Word has length 143 [2023-11-23 06:50:38,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:50:38,568 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1224 transitions. [2023-11-23 06:50:38,568 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, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-23 06:50:38,569 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1224 transitions. [2023-11-23 06:50:38,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 06:50:38,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:50:38,571 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:50:38,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 06:50:38,571 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:50:38,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:50:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1566967915, now seen corresponding path program 1 times [2023-11-23 06:50:38,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:50:38,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587236620] [2023-11-23 06:50:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:38,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:50:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:50:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:50:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:50:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:50:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:50:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:50:39,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:50:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:50:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 06:50:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:50:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 06:50:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 06:50:39,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 06:50:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 06:50:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:39,220 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-23 06:50:39,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:50:39,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587236620] [2023-11-23 06:50:39,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587236620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:50:39,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:50:39,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 06:50:39,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260885285] [2023-11-23 06:50:39,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:50:39,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:50:39,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:50:39,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:50:39,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:50:39,224 INFO L87 Difference]: Start difference. First operand 952 states and 1224 transitions. Second operand has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 06:50:40,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:50:40,972 INFO L93 Difference]: Finished difference Result 964 states and 1236 transitions. [2023-11-23 06:50:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:50:40,973 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 151 [2023-11-23 06:50:40,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:50:40,976 INFO L225 Difference]: With dead ends: 964 [2023-11-23 06:50:40,976 INFO L226 Difference]: Without dead ends: 962 [2023-11-23 06:50:40,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:50:40,977 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 139 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 1391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:50:40,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 467 Invalid, 1391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 06:50:40,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2023-11-23 06:50:41,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 961. [2023-11-23 06:50:41,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 600 states have (on average 1.0866666666666667) internal successors, (652), 613 states have internal predecessors, (652), 270 states have call successors, (270), 82 states have call predecessors, (270), 90 states have return successors, (310), 265 states have call predecessors, (310), 264 states have call successors, (310) [2023-11-23 06:50:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1232 transitions. [2023-11-23 06:50:41,102 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1232 transitions. Word has length 151 [2023-11-23 06:50:41,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:50:41,102 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1232 transitions. [2023-11-23 06:50:41,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 06:50:41,103 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1232 transitions. [2023-11-23 06:50:41,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 06:50:41,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:50:41,105 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:50:41,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 06:50:41,105 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:50:41,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:50:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash -224634135, now seen corresponding path program 1 times [2023-11-23 06:50:41,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:50:41,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284715407] [2023-11-23 06:50:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:50:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:43,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:50:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:50:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:43,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:50:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:50:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:50:43,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:50:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:50:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:50:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:50:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 06:50:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:50:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-23 06:50:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 06:50:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-23 06:50:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 06:50:43,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:43,885 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 31 proven. 35 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-23 06:50:43,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:50:43,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284715407] [2023-11-23 06:50:43,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284715407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:50:43,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890439416] [2023-11-23 06:50:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:50:43,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:50:43,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:50:43,888 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:50:43,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-23 06:50:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:50:44,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 2834 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-23 06:50:44,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:50:44,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 06:50:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 106 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 06:50:47,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:50:48,035 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 32 treesize of output 26 [2023-11-23 06:50:48,146 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 51 proven. 1 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-23 06:50:48,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890439416] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:50:48,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:50:48,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 30, 20] total 67 [2023-11-23 06:50:48,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688739529] [2023-11-23 06:50:48,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:50:48,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-11-23 06:50:48,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:50:48,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-11-23 06:50:48,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=4226, Unknown=0, NotChecked=0, Total=4422 [2023-11-23 06:50:48,149 INFO L87 Difference]: Start difference. First operand 961 states and 1232 transitions. Second operand has 67 states, 56 states have (on average 3.4642857142857144) internal successors, (194), 54 states have internal predecessors, (194), 16 states have call successors, (51), 8 states have call predecessors, (51), 11 states have return successors, (46), 18 states have call predecessors, (46), 14 states have call successors, (46) [2023-11-23 06:50:53,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:50:57,001 WARN L539 Checker$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 06:50:59,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:01,875 WARN L539 Checker$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 06:51:03,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:08,769 WARN L539 Checker$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 06:51:10,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:51:18,112 WARN L539 Checker$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 06:51:20,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:51:20,870 INFO L93 Difference]: Finished difference Result 977 states and 1247 transitions. [2023-11-23 06:51:20,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-23 06:51:20,871 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 56 states have (on average 3.4642857142857144) internal successors, (194), 54 states have internal predecessors, (194), 16 states have call successors, (51), 8 states have call predecessors, (51), 11 states have return successors, (46), 18 states have call predecessors, (46), 14 states have call successors, (46) Word has length 151 [2023-11-23 06:51:20,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:51:20,874 INFO L225 Difference]: With dead ends: 977 [2023-11-23 06:51:20,874 INFO L226 Difference]: Without dead ends: 975 [2023-11-23 06:51:20,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 277 SyntacticMatches, 21 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3149 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1006, Invalid=13036, Unknown=0, NotChecked=0, Total=14042 [2023-11-23 06:51:20,877 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 547 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 9769 mSolverCounterSat, 289 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 10066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 9769 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:51:20,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1271 Invalid, 10066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 9769 Invalid, 8 Unknown, 0 Unchecked, 28.9s Time] [2023-11-23 06:51:20,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2023-11-23 06:51:21,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 960. [2023-11-23 06:51:21,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 600 states have (on average 1.0866666666666667) internal successors, (652), 613 states have internal predecessors, (652), 269 states have call successors, (269), 82 states have call predecessors, (269), 90 states have return successors, (309), 264 states have call predecessors, (309), 263 states have call successors, (309) [2023-11-23 06:51:21,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1230 transitions. [2023-11-23 06:51:21,011 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1230 transitions. Word has length 151 [2023-11-23 06:51:21,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:51:21,012 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1230 transitions. [2023-11-23 06:51:21,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 56 states have (on average 3.4642857142857144) internal successors, (194), 54 states have internal predecessors, (194), 16 states have call successors, (51), 8 states have call predecessors, (51), 11 states have return successors, (46), 18 states have call predecessors, (46), 14 states have call successors, (46) [2023-11-23 06:51:21,012 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1230 transitions. [2023-11-23 06:51:21,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 06:51:21,014 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:51:21,014 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:51:21,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-23 06:51:21,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:51:21,229 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:51:21,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:51:21,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1860360169, now seen corresponding path program 1 times [2023-11-23 06:51:21,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:51:21,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52975296] [2023-11-23 06:51:21,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:51:21,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:51:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:22,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:22,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:51:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:51:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:22,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:51:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:22,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:51:22,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:22,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:51:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:51:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:51:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:51:23,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:51:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:51:23,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:51:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 06:51:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:51:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:51:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:51:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:51:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:51:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-11-23 06:51:23,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:51:23,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52975296] [2023-11-23 06:51:23,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52975296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:51:23,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948333995] [2023-11-23 06:51:23,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:51:23,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:51:23,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:51:23,905 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:51:23,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-23 06:51:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:51:24,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 2797 conjuncts, 91 conjunts are in the unsatisfiable core [2023-11-23 06:51:24,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:51:25,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 06:51:27,234 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_1| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_112| Int)) (= (select (select |c_#memory_int#4| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_1|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_1|) (select (select |c_#memory_int#7| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_112|) 0))) is different from true [2023-11-23 06:51:29,350 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_113| Int)) (= (select (select |c_#memory_int#4| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_2|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_2|) (select (select |c_#memory_int#7| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_113|) 0))) is different from true [2023-11-23 06:51:29,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:51:31,435 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_114| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_3| Int)) (= (select (select |c_#memory_int#4| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_3|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_3|) (select (select |c_#memory_int#7| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_114|) 0))) is different from true [2023-11-23 06:51:33,503 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_115| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_4| Int) (|v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_4| Int)) (= (select (select |c_#memory_int#4| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.base_BEFORE_CALL_4|) |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to_old~0#1.offset_BEFORE_CALL_4|) (select (select |c_#memory_int#7| |v_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base_BEFORE_CALL_115|) 0))) is different from true [2023-11-23 06:51:35,248 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:51:35,248 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 46 treesize of output 38 [2023-11-23 06:51:35,265 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 19 treesize of output 11 [2023-11-23 06:51:35,268 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 24 treesize of output 12 [2023-11-23 06:51:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 67 proven. 25 refuted. 9 times theorem prover too weak. 30 trivial. 29 not checked. [2023-11-23 06:51:35,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:51:40,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948333995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:51:40,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:51:40,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 34] total 49 [2023-11-23 06:51:40,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184145500] [2023-11-23 06:51:40,244 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:51:40,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-23 06:51:40,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:51:40,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-23 06:51:40,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=2302, Unknown=6, NotChecked=396, Total=2862 [2023-11-23 06:51:40,246 INFO L87 Difference]: Start difference. First operand 960 states and 1230 transitions. Second operand has 49 states, 44 states have (on average 3.25) internal successors, (143), 43 states have internal predecessors, (143), 17 states have call successors, (39), 11 states have call predecessors, (39), 14 states have return successors, (37), 15 states have call predecessors, (37), 15 states have call successors, (37) Killed by 15