./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be64_harness.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be64_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 e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:58:29,976 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:58:30,069 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:58:30,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:58:30,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:58:30,110 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:58:30,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:58:30,111 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:58:30,112 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:58:30,116 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:58:30,116 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:58:30,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:58:30,118 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:58:30,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:58:30,119 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:58:30,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:58:30,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:58:30,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:58:30,120 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:58:30,121 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:58:30,121 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:58:30,121 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:58:30,122 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:58:30,122 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:58:30,123 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:58:30,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:58:30,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:58:30,124 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:58:30,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:58:30,124 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:58:30,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:58:30,125 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:58:30,126 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:58:30,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:58:30,126 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:58:30,126 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:58:30,126 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:58:30,127 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:58:30,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:58:30,127 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:58:30,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:58:30,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:58:30,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:58:30,431 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:58:30,431 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:58:30,433 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be64_harness.i [2023-11-23 06:58:31,671 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:58:32,202 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:58:32,202 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be64_harness.i [2023-11-23 06:58:32,242 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0534bcbe4/c03775205c524bb99f49b1b79ab4a2ff/FLAG51c1e696f [2023-11-23 06:58:32,255 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0534bcbe4/c03775205c524bb99f49b1b79ab4a2ff [2023-11-23 06:58:32,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:58:32,258 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:58:32,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:58:32,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:58:32,264 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:58:32,264 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:58:32" (1/1) ... [2023-11-23 06:58:32,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1131022b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:32, skipping insertion in model container [2023-11-23 06:58:32,265 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:58:32" (1/1) ... [2023-11-23 06:58:32,377 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:58:32,675 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be64_harness.i[4497,4510] [2023-11-23 06:58:32,685 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be64_harness.i[4557,4570] [2023-11-23 06:58:34,098 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:34,100 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:34,101 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:34,106 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:34,107 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:34,132 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:34,137 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:34,141 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:34,142 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:34,689 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:58:34,690 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:58:34,691 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:58:34,694 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:58:34,699 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:58:34,700 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:58:34,701 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:58:34,702 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:58:34,703 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:58:34,706 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:58:34,937 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:34,938 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:34,999 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:58:35,062 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:58:35,081 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be64_harness.i[4497,4510] [2023-11-23 06:58:35,082 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_be64_harness.i[4557,4570] [2023-11-23 06:58:35,122 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:35,122 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:35,123 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:35,123 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:35,124 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:35,141 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:35,142 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:35,143 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:35,144 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:35,179 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:58:35,179 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:58:35,180 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:58:35,180 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:58:35,182 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:58:35,182 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:58:35,182 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:58:35,183 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:58:35,183 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:58:35,184 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:58:35,340 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-23 06:58:35,342 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:35,342 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:58:35,354 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-23 06:58:35,384 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:58:35,594 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,594 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,594 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,594 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,594 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,594 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,594 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,595 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,595 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,595 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,595 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,595 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,595 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,595 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,595 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,595 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,595 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,595 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:58:35,604 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:58:35,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35 WrapperNode [2023-11-23 06:58:35,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:58:35,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:58:35,606 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:58:35,606 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:58:35,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (1/1) ... [2023-11-23 06:58:35,737 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (1/1) ... [2023-11-23 06:58:35,817 INFO L138 Inliner]: procedures = 690, calls = 2622, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 860 [2023-11-23 06:58:35,818 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:58:35,819 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:58:35,819 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:58:35,819 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:58:35,830 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (1/1) ... [2023-11-23 06:58:35,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (1/1) ... [2023-11-23 06:58:35,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (1/1) ... [2023-11-23 06:58:35,936 INFO L188 MemorySlicer]: Split 560 memory accesses to 9 slices as follows [2, 43, 6, 256, 8, 236, 4, 2, 3]. 46 percent of accesses are in the largest equivalence class. The 507 initializations are split as follows [2, 4, 0, 256, 5, 236, 0, 1, 3]. The 8 writes are split as follows [0, 3, 2, 0, 1, 0, 2, 0, 0]. [2023-11-23 06:58:35,936 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (1/1) ... [2023-11-23 06:58:35,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (1/1) ... [2023-11-23 06:58:35,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (1/1) ... [2023-11-23 06:58:35,972 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (1/1) ... [2023-11-23 06:58:35,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (1/1) ... [2023-11-23 06:58:36,002 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (1/1) ... [2023-11-23 06:58:36,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:58:36,034 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:58:36,034 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:58:36,034 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:58:36,035 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (1/1) ... [2023-11-23 06:58:36,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:58:36,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:58:36,074 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 06:58:36,097 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 06:58:36,131 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2023-11-23 06:58:36,132 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2023-11-23 06:58:36,132 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2023-11-23 06:58:36,133 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 06:58:36,133 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 06:58:36,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:58:36,133 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:58:36,133 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:58:36,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:58:36,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:58:36,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:58:36,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:58:36,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:58:36,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:58:36,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 06:58:36,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 06:58:36,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-23 06:58:36,135 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:58:36,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:58:36,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:58:36,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:58:36,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:58:36,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:58:36,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:58:36,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:58:36,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:58:36,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:58:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 06:58:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 06:58:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-23 06:58:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 06:58:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 06:58:36,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:58:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:58:36,139 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:58:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:58:36,140 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 06:58:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 06:58:36,140 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:58:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:58:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 06:58:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 06:58:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:58:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:58:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:58:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:58:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:58:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:58:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:58:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 06:58:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 06:58:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-23 06:58:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-23 06:58:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-23 06:58:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:58:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:58:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:58:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:58:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:58:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:58:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 06:58:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 06:58:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-23 06:58:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:58:36,144 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:58:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:58:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:58:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:58:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:58:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:58:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:58:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 06:58:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 06:58:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-23 06:58:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2023-11-23 06:58:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2023-11-23 06:58:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:58:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:58:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:58:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:58:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:58:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:58:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 06:58:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 06:58:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-23 06:58:36,481 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:58:36,484 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:58:37,392 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:58:37,633 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:58:37,633 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 06:58:37,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:58:37 BoogieIcfgContainer [2023-11-23 06:58:37,634 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:58:37,637 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:58:37,637 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:58:37,640 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:58:37,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:58:32" (1/3) ... [2023-11-23 06:58:37,646 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2c16c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:58:37, skipping insertion in model container [2023-11-23 06:58:37,646 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:58:35" (2/3) ... [2023-11-23 06:58:37,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2c16c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:58:37, skipping insertion in model container [2023-11-23 06:58:37,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:58:37" (3/3) ... [2023-11-23 06:58:37,649 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be64_harness.i [2023-11-23 06:58:37,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:58:37,667 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:58:37,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:58:37,738 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;@50c7baf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:58:37,739 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:58:37,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 129 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 80 states have internal predecessors, (102), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-23 06:58:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 06:58:37,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:37,760 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:37,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:37,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:37,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1249630763, now seen corresponding path program 1 times [2023-11-23 06:58:37,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:37,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68101542] [2023-11-23 06:58:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:37,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:38,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:38,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:38,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:58:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 06:58:38,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 06:58:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:58:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:58:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:58:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:58:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:58:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 06:58:38,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:38,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68101542] [2023-11-23 06:58:38,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68101542] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:38,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:58:38,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 06:58:38,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032286274] [2023-11-23 06:58:38,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:38,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 06:58:38,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:38,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 06:58:38,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 06:58:38,700 INFO L87 Difference]: Start difference. First operand has 129 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 80 states have internal predecessors, (102), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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 06:58:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:39,325 INFO L93 Difference]: Finished difference Result 256 states and 371 transitions. [2023-11-23 06:58:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:58:39,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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 86 [2023-11-23 06:58:39,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:39,338 INFO L225 Difference]: With dead ends: 256 [2023-11-23 06:58:39,338 INFO L226 Difference]: Without dead ends: 127 [2023-11-23 06:58:39,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 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 06:58:39,345 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 70 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:39,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 117 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:58:39,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-23 06:58:39,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-23 06:58:39,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 79 states have internal predecessors, (98), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-23 06:58:39,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 169 transitions. [2023-11-23 06:58:39,409 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 169 transitions. Word has length 86 [2023-11-23 06:58:39,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:39,409 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 169 transitions. [2023-11-23 06:58:39,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 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 06:58:39,410 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 169 transitions. [2023-11-23 06:58:39,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 06:58:39,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:39,414 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:39,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:58:39,414 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:39,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:39,415 INFO L85 PathProgramCache]: Analyzing trace with hash 338050777, now seen corresponding path program 1 times [2023-11-23 06:58:39,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:39,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254845582] [2023-11-23 06:58:39,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:39,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 06:58:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 06:58:40,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 06:58:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:58:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:58:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 06:58:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:58:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-23 06:58:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:40,424 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 06:58:40,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:40,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254845582] [2023-11-23 06:58:40,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254845582] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:58:40,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45041221] [2023-11-23 06:58:40,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:40,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:58:40,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:58:40,432 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 06:58:40,450 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 06:58:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:41,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:58:41,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:58:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:58:41,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:58:41,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45041221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:41,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:58:41,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-23 06:58:41,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073485665] [2023-11-23 06:58:41,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:41,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:58:41,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:41,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:58:41,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:58:41,170 INFO L87 Difference]: Start difference. First operand 127 states and 169 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 06:58:41,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:41,631 INFO L93 Difference]: Finished difference Result 237 states and 322 transitions. [2023-11-23 06:58:41,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:58:41,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 86 [2023-11-23 06:58:41,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:41,639 INFO L225 Difference]: With dead ends: 237 [2023-11-23 06:58:41,639 INFO L226 Difference]: Without dead ends: 129 [2023-11-23 06:58:41,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:58:41,646 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 43 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:41,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 386 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:58:41,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-23 06:58:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-11-23 06:58:41,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 79 states have (on average 1.2531645569620253) internal successors, (99), 81 states have internal predecessors, (99), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2023-11-23 06:58:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 174 transitions. [2023-11-23 06:58:41,674 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 174 transitions. Word has length 86 [2023-11-23 06:58:41,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:41,674 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 174 transitions. [2023-11-23 06:58:41,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 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 06:58:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 174 transitions. [2023-11-23 06:58:41,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 06:58:41,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:41,681 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:41,705 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 06:58:41,901 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 06:58:41,901 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:41,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:41,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1742244932, now seen corresponding path program 1 times [2023-11-23 06:58:41,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:41,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800522367] [2023-11-23 06:58:41,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:41,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:42,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:58:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:58:42,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:58:42,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:58:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-23 06:58:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:58:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:58:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 06:58:42,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:42,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800522367] [2023-11-23 06:58:42,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800522367] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:58:42,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517888950] [2023-11-23 06:58:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:42,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:58:42,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:58:42,640 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 06:58:42,658 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 06:58:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:43,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 06:58:43,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:58:43,286 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 06:58:43,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:58:43,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517888950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:43,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:58:43,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-23 06:58:43,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069864804] [2023-11-23 06:58:43,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:43,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:58:43,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:43,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:58:43,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:58:43,289 INFO L87 Difference]: Start difference. First operand 129 states and 174 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-23 06:58:43,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:43,793 INFO L93 Difference]: Finished difference Result 232 states and 313 transitions. [2023-11-23 06:58:43,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:58:43,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 92 [2023-11-23 06:58:43,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:43,796 INFO L225 Difference]: With dead ends: 232 [2023-11-23 06:58:43,796 INFO L226 Difference]: Without dead ends: 129 [2023-11-23 06:58:43,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:58:43,797 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 43 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:43,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 527 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:58:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-23 06:58:43,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129. [2023-11-23 06:58:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 79 states have (on average 1.2531645569620253) internal successors, (99), 81 states have internal predecessors, (99), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2023-11-23 06:58:43,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 173 transitions. [2023-11-23 06:58:43,808 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 173 transitions. Word has length 92 [2023-11-23 06:58:43,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:43,808 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 173 transitions. [2023-11-23 06:58:43,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-23 06:58:43,809 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 173 transitions. [2023-11-23 06:58:43,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 06:58:43,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:43,810 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:43,832 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 06:58:44,032 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 06:58:44,033 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:44,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:44,033 INFO L85 PathProgramCache]: Analyzing trace with hash 250035321, now seen corresponding path program 2 times [2023-11-23 06:58:44,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:44,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556338195] [2023-11-23 06:58:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:44,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:44,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:58:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:58:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:58:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:58:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 06:58:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 06:58:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:58:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:44,791 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 06:58:44,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556338195] [2023-11-23 06:58:44,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556338195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:58:44,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160267913] [2023-11-23 06:58:44,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:58:44,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:58:44,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:58:44,794 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 06:58:44,813 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 06:58:45,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:58:45,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:58:45,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 06:58:45,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:58:45,532 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 06:58:45,532 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:58:45,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160267913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:45,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:58:45,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-23 06:58:45,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917637177] [2023-11-23 06:58:45,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:45,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:58:45,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:45,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:58:45,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:58:45,535 INFO L87 Difference]: Start difference. First operand 129 states and 173 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-23 06:58:46,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:46,429 INFO L93 Difference]: Finished difference Result 214 states and 288 transitions. [2023-11-23 06:58:46,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:58:46,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 98 [2023-11-23 06:58:46,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:46,435 INFO L225 Difference]: With dead ends: 214 [2023-11-23 06:58:46,435 INFO L226 Difference]: Without dead ends: 127 [2023-11-23 06:58:46,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-11-23 06:58:46,436 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 58 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:46,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 772 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:58:46,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-23 06:58:46,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-23 06:58:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 78 states have (on average 1.2435897435897436) internal successors, (97), 79 states have internal predecessors, (97), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-23 06:58:46,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 168 transitions. [2023-11-23 06:58:46,455 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 168 transitions. Word has length 98 [2023-11-23 06:58:46,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:46,456 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 168 transitions. [2023-11-23 06:58:46,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 7 states have internal predecessors, (42), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2023-11-23 06:58:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 168 transitions. [2023-11-23 06:58:46,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-23 06:58:46,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:46,458 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:46,477 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 06:58:46,658 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 06:58:46,659 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:46,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:46,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1591938087, now seen corresponding path program 1 times [2023-11-23 06:58:46,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:46,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525034967] [2023-11-23 06:58:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:46,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:47,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:58:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:58:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:58:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:58:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 06:58:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:58:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:58:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2023-11-23 06:58:47,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:47,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525034967] [2023-11-23 06:58:47,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525034967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:47,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:58:47,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:58:47,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611570149] [2023-11-23 06:58:47,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:47,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:58:47,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:47,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:58:47,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:58:47,567 INFO L87 Difference]: Start difference. First operand 127 states and 168 transitions. Second operand has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 06:58:48,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:48,893 INFO L93 Difference]: Finished difference Result 138 states and 184 transitions. [2023-11-23 06:58:48,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:58:48,894 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 110 [2023-11-23 06:58:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:48,895 INFO L225 Difference]: With dead ends: 138 [2023-11-23 06:58:48,896 INFO L226 Difference]: Without dead ends: 136 [2023-11-23 06:58:48,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 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 06:58:48,896 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 98 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:48,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 486 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 06:58:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-23 06:58:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2023-11-23 06:58:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 83 states have (on average 1.2289156626506024) internal successors, (102), 85 states have internal predecessors, (102), 37 states have call successors, (37), 13 states have call predecessors, (37), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2023-11-23 06:58:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 181 transitions. [2023-11-23 06:58:48,904 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 181 transitions. Word has length 110 [2023-11-23 06:58:48,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:48,905 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 181 transitions. [2023-11-23 06:58:48,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.857142857142857) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 06:58:48,905 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 181 transitions. [2023-11-23 06:58:48,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 06:58:48,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:48,906 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:48,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 06:58:48,907 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:48,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:48,907 INFO L85 PathProgramCache]: Analyzing trace with hash -892509231, now seen corresponding path program 1 times [2023-11-23 06:58:48,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:48,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909690644] [2023-11-23 06:58:48,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:48,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:58:49,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:58:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:58:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:58:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 06:58:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:58:49,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:58:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-23 06:58:49,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:49,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909690644] [2023-11-23 06:58:49,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909690644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:49,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:58:49,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 06:58:49,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036379866] [2023-11-23 06:58:49,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:49,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:58:49,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:49,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:58:49,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:58:49,950 INFO L87 Difference]: Start difference. First operand 135 states and 181 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 06:58:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:50,927 INFO L93 Difference]: Finished difference Result 274 states and 385 transitions. [2023-11-23 06:58:50,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:58:50,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 114 [2023-11-23 06:58:50,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:50,929 INFO L225 Difference]: With dead ends: 274 [2023-11-23 06:58:50,930 INFO L226 Difference]: Without dead ends: 158 [2023-11-23 06:58:50,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:58:50,931 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 145 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:50,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 235 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:58:50,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-23 06:58:50,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 140. [2023-11-23 06:58:50,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 90 states have internal predecessors, (109), 37 states have call successors, (37), 13 states have call predecessors, (37), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2023-11-23 06:58:50,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 188 transitions. [2023-11-23 06:58:50,944 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 188 transitions. Word has length 114 [2023-11-23 06:58:50,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:50,946 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 188 transitions. [2023-11-23 06:58:50,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 06:58:50,946 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 188 transitions. [2023-11-23 06:58:50,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 06:58:50,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:50,950 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:50,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 06:58:50,950 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:50,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:50,951 INFO L85 PathProgramCache]: Analyzing trace with hash -191444653, now seen corresponding path program 1 times [2023-11-23 06:58:50,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:50,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076482393] [2023-11-23 06:58:50,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:50,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:51,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:58:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:58:51,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:58:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 06:58:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 06:58:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:58:51,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:58:51,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:51,751 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-23 06:58:51,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:51,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076482393] [2023-11-23 06:58:51,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076482393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:51,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:58:51,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:58:51,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741644852] [2023-11-23 06:58:51,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:51,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:58:51,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:51,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:58:51,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:58:51,754 INFO L87 Difference]: Start difference. First operand 140 states and 188 transitions. Second operand has 5 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 3 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 06:58:52,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:58:52,589 INFO L93 Difference]: Finished difference Result 242 states and 324 transitions. [2023-11-23 06:58:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:58:52,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 3 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 114 [2023-11-23 06:58:52,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:58:52,592 INFO L225 Difference]: With dead ends: 242 [2023-11-23 06:58:52,592 INFO L226 Difference]: Without dead ends: 140 [2023-11-23 06:58:52,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:58:52,593 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 69 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:58:52,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 229 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:58:52,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-23 06:58:52,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-23 06:58:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 90 states have internal predecessors, (108), 37 states have call successors, (37), 13 states have call predecessors, (37), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2023-11-23 06:58:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 187 transitions. [2023-11-23 06:58:52,609 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 187 transitions. Word has length 114 [2023-11-23 06:58:52,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:58:52,609 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 187 transitions. [2023-11-23 06:58:52,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (16), 3 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 06:58:52,610 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 187 transitions. [2023-11-23 06:58:52,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 06:58:52,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:58:52,611 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:58:52,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 06:58:52,612 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:58:52,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:58:52,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1743069271, now seen corresponding path program 1 times [2023-11-23 06:58:52,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:58:52,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3144803] [2023-11-23 06:58:52,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:52,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:58:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:58:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:58:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:58:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 06:58:54,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:58:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 06:58:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:58:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:58:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:58:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-23 06:58:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:58:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 06:58:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:54,755 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 06:58:54,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:58:54,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3144803] [2023-11-23 06:58:54,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3144803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:58:54,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463317116] [2023-11-23 06:58:54,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:58:54,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:58:54,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:58:54,757 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 06:58:54,772 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 06:58:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:58:55,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-23 06:58:55,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:58:55,421 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 06:58:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-23 06:58:55,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:58:55,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463317116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:58:55,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:58:55,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 20 [2023-11-23 06:58:55,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650022114] [2023-11-23 06:58:55,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:58:55,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:58:55,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:58:55,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:58:55,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:58:55,694 INFO L87 Difference]: Start difference. First operand 140 states and 187 transitions. Second operand has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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 06:58:58,545 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 06:59:00,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:02,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:05,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:07,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:09,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:11,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:11,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:11,424 INFO L93 Difference]: Finished difference Result 326 states and 433 transitions. [2023-11-23 06:59:11,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 06:59:11,425 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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 116 [2023-11-23 06:59:11,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:11,427 INFO L225 Difference]: With dead ends: 326 [2023-11-23 06:59:11,427 INFO L226 Difference]: Without dead ends: 205 [2023-11-23 06:59:11,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-11-23 06:59:11,429 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 145 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:11,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 769 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 467 Invalid, 7 Unknown, 0 Unchecked, 15.6s Time] [2023-11-23 06:59:11,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-23 06:59:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 200. [2023-11-23 06:59:11,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 132 states have (on average 1.25) internal successors, (165), 135 states have internal predecessors, (165), 48 states have call successors, (48), 17 states have call predecessors, (48), 19 states have return successors, (51), 47 states have call predecessors, (51), 46 states have call successors, (51) [2023-11-23 06:59:11,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 264 transitions. [2023-11-23 06:59:11,444 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 264 transitions. Word has length 116 [2023-11-23 06:59:11,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:11,444 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 264 transitions. [2023-11-23 06:59:11,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 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 06:59:11,444 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 264 transitions. [2023-11-23 06:59:11,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 06:59:11,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:11,446 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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 06:59:11,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 06:59:11,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:11,664 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:11,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:11,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1427940591, now seen corresponding path program 2 times [2023-11-23 06:59:11,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:11,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352084875] [2023-11-23 06:59:11,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:11,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:59:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:59:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:59:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:59:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 06:59:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 06:59:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:59:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 06:59:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 06:59:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 06:59:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 06:59:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-23 06:59:12,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:12,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352084875] [2023-11-23 06:59:12,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352084875] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:12,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400857744] [2023-11-23 06:59:12,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:59:12,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:12,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:12,690 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:59:12,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 06:59:13,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:59:13,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:59:13,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-23 06:59:13,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:13,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 06:59:13,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 06:59:14,525 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 78 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 06:59:14,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:59:15,139 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 31 proven. 18 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 06:59:15,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400857744] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:59:15,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:59:15,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 13] total 30 [2023-11-23 06:59:15,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094854600] [2023-11-23 06:59:15,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:59:15,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-23 06:59:15,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:15,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-23 06:59:15,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=779, Unknown=0, NotChecked=0, Total=870 [2023-11-23 06:59:15,143 INFO L87 Difference]: Start difference. First operand 200 states and 264 transitions. Second operand has 30 states, 28 states have (on average 4.678571428571429) internal successors, (131), 27 states have internal predecessors, (131), 7 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-23 06:59:20,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:20,531 INFO L93 Difference]: Finished difference Result 676 states and 922 transitions. [2023-11-23 06:59:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-23 06:59:20,531 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 4.678571428571429) internal successors, (131), 27 states have internal predecessors, (131), 7 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) Word has length 120 [2023-11-23 06:59:20,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:20,536 INFO L225 Difference]: With dead ends: 676 [2023-11-23 06:59:20,536 INFO L226 Difference]: Without dead ends: 499 [2023-11-23 06:59:20,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 247 SyntacticMatches, 10 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1176 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=919, Invalid=4933, Unknown=0, NotChecked=0, Total=5852 [2023-11-23 06:59:20,539 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 477 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 3085 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 3212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:20,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 958 Invalid, 3212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3085 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 06:59:20,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-11-23 06:59:20,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 400. [2023-11-23 06:59:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 273 states have (on average 1.271062271062271) internal successors, (347), 279 states have internal predecessors, (347), 90 states have call successors, (90), 30 states have call predecessors, (90), 36 states have return successors, (106), 90 states have call predecessors, (106), 86 states have call successors, (106) [2023-11-23 06:59:20,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 543 transitions. [2023-11-23 06:59:20,571 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 543 transitions. Word has length 120 [2023-11-23 06:59:20,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:20,572 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 543 transitions. [2023-11-23 06:59:20,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 4.678571428571429) internal successors, (131), 27 states have internal predecessors, (131), 7 states have call successors, (36), 5 states have call predecessors, (36), 7 states have return successors, (32), 7 states have call predecessors, (32), 7 states have call successors, (32) [2023-11-23 06:59:20,572 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 543 transitions. [2023-11-23 06:59:20,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 06:59:20,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:20,573 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:20,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 06:59:20,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:20,774 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:20,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:20,775 INFO L85 PathProgramCache]: Analyzing trace with hash 670534610, now seen corresponding path program 1 times [2023-11-23 06:59:20,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:20,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517590283] [2023-11-23 06:59:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:20,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:59:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:59:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:59:21,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:59:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:59:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:59:21,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:59:21,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:21,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:59:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:59:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-23 06:59:21,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:21,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517590283] [2023-11-23 06:59:21,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517590283] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:21,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562766995] [2023-11-23 06:59:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:21,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:21,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:21,181 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:59:21,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 06:59:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:21,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 2782 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:59:21,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:21,740 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-23 06:59:21,740 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:59:21,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562766995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:21,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:59:21,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 06:59:21,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138970086] [2023-11-23 06:59:21,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:21,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:59:21,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:21,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:59:21,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:59:21,743 INFO L87 Difference]: Start difference. First operand 400 states and 543 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (16), 2 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 06:59:22,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:22,141 INFO L93 Difference]: Finished difference Result 814 states and 1121 transitions. [2023-11-23 06:59:22,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:59:22,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (16), 2 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 122 [2023-11-23 06:59:22,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:22,148 INFO L225 Difference]: With dead ends: 814 [2023-11-23 06:59:22,148 INFO L226 Difference]: Without dead ends: 437 [2023-11-23 06:59:22,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 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 06:59:22,151 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 9 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:22,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 454 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:59:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2023-11-23 06:59:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 410. [2023-11-23 06:59:22,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 283 states have (on average 1.2614840989399294) internal successors, (357), 289 states have internal predecessors, (357), 90 states have call successors, (90), 30 states have call predecessors, (90), 36 states have return successors, (106), 90 states have call predecessors, (106), 86 states have call successors, (106) [2023-11-23 06:59:22,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 553 transitions. [2023-11-23 06:59:22,191 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 553 transitions. Word has length 122 [2023-11-23 06:59:22,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:22,192 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 553 transitions. [2023-11-23 06:59:22,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (16), 2 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 06:59:22,192 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 553 transitions. [2023-11-23 06:59:22,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 06:59:22,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:22,200 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:22,218 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 06:59:22,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:22,408 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:22,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:22,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1994861290, now seen corresponding path program 1 times [2023-11-23 06:59:22,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:22,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164355307] [2023-11-23 06:59:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:22,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:59:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:59:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:59:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:59:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:59:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:59:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:59:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:59:22,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:59:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:22,780 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-23 06:59:22,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:22,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164355307] [2023-11-23 06:59:22,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164355307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:22,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782040193] [2023-11-23 06:59:22,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:22,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:22,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:22,785 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 06:59:22,813 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 06:59:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:23,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 2784 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 06:59:23,373 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 06:59:23,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:59:23,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782040193] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:23,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:59:23,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 06:59:23,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600515610] [2023-11-23 06:59:23,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:23,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:59:23,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:23,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:59:23,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:59:23,383 INFO L87 Difference]: Start difference. First operand 410 states and 553 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 2 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 06:59:23,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:23,812 INFO L93 Difference]: Finished difference Result 862 states and 1180 transitions. [2023-11-23 06:59:23,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:59:23,813 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 2 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 122 [2023-11-23 06:59:23,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:23,817 INFO L225 Difference]: With dead ends: 862 [2023-11-23 06:59:23,817 INFO L226 Difference]: Without dead ends: 475 [2023-11-23 06:59:23,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 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 06:59:23,819 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 28 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 468 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 06:59:23,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 468 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:59:23,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-11-23 06:59:23,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 410. [2023-11-23 06:59:23,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 283 states have (on average 1.243816254416961) internal successors, (352), 289 states have internal predecessors, (352), 90 states have call successors, (90), 30 states have call predecessors, (90), 36 states have return successors, (106), 90 states have call predecessors, (106), 86 states have call successors, (106) [2023-11-23 06:59:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 548 transitions. [2023-11-23 06:59:23,858 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 548 transitions. Word has length 122 [2023-11-23 06:59:23,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:23,859 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 548 transitions. [2023-11-23 06:59:23,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (16), 2 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 06:59:23,859 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 548 transitions. [2023-11-23 06:59:23,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 06:59:23,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:23,862 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:23,887 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 06:59:24,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:24,078 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:24,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:24,078 INFO L85 PathProgramCache]: Analyzing trace with hash -643476072, now seen corresponding path program 2 times [2023-11-23 06:59:24,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:24,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976809540] [2023-11-23 06:59:24,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:24,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:25,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:25,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:59:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:25,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:59:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:25,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:25,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:59:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:25,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:25,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:59:26,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 06:59:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 06:59:26,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-23 06:59:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-23 06:59:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 06:59:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:59:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:26,427 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-11-23 06:59:26,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:26,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976809540] [2023-11-23 06:59:26,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976809540] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:26,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747005068] [2023-11-23 06:59:26,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:59:26,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:26,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:26,429 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 06:59:26,430 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 06:59:27,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:59:27,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:59:27,118 INFO L262 TraceCheckSpWp]: Trace formula consists of 2779 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-23 06:59:27,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:27,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 06:59:27,958 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 06:59:27,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:59:27,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747005068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:27,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:59:27,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [15] total 27 [2023-11-23 06:59:27,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568391111] [2023-11-23 06:59:27,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:27,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 06:59:27,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:27,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 06:59:27,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2023-11-23 06:59:27,961 INFO L87 Difference]: Start difference. First operand 410 states and 548 transitions. Second operand has 14 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-23 06:59:31,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:33,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:35,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:38,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:40,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:42,438 WARN L539 Checker$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 06:59:44,495 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 06:59:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:44,573 INFO L93 Difference]: Finished difference Result 547 states and 725 transitions. [2023-11-23 06:59:44,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 06:59:44,574 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 122 [2023-11-23 06:59:44,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:44,576 INFO L225 Difference]: With dead ends: 547 [2023-11-23 06:59:44,576 INFO L226 Difference]: Without dead ends: 271 [2023-11-23 06:59:44,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 129 SyntacticMatches, 10 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=105, Invalid=887, Unknown=0, NotChecked=0, Total=992 [2023-11-23 06:59:44,578 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 129 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 23 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1460 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:44,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1460 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 834 Invalid, 7 Unknown, 0 Unchecked, 16.5s Time] [2023-11-23 06:59:44,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-23 06:59:44,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 269. [2023-11-23 06:59:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 184 states have (on average 1.233695652173913) internal successors, (227), 188 states have internal predecessors, (227), 60 states have call successors, (60), 20 states have call predecessors, (60), 24 states have return successors, (66), 60 states have call predecessors, (66), 56 states have call successors, (66) [2023-11-23 06:59:44,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 353 transitions. [2023-11-23 06:59:44,594 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 353 transitions. Word has length 122 [2023-11-23 06:59:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:44,594 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 353 transitions. [2023-11-23 06:59:44,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 7 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-23 06:59:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 353 transitions. [2023-11-23 06:59:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-23 06:59:44,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:44,596 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:44,617 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 06:59:44,812 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,SelfDestructingSolverStorable11 [2023-11-23 06:59:44,812 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:44,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:44,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1858015386, now seen corresponding path program 1 times [2023-11-23 06:59:44,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:44,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716558532] [2023-11-23 06:59:44,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:44,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:59:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:59:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:59:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:59:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:59:45,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:59:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:45,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 06:59:45,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 06:59:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:59:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 06:59:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:45,757 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 06:59:45,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:45,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716558532] [2023-11-23 06:59:45,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716558532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:45,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695058327] [2023-11-23 06:59:45,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:45,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:45,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:45,759 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 06:59:45,761 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 06:59:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:46,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 06:59:46,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-23 06:59:46,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:59:46,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695058327] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:59:46,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:59:46,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 12 [2023-11-23 06:59:46,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816183195] [2023-11-23 06:59:46,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:59:46,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:59:46,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:46,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:59:46,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:59:46,349 INFO L87 Difference]: Start difference. First operand 269 states and 353 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, (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 06:59:47,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:59:47,144 INFO L93 Difference]: Finished difference Result 498 states and 654 transitions. [2023-11-23 06:59:47,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:59:47,145 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, (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 130 [2023-11-23 06:59:47,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:59:47,146 INFO L225 Difference]: With dead ends: 498 [2023-11-23 06:59:47,146 INFO L226 Difference]: Without dead ends: 277 [2023-11-23 06:59:47,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:59:47,148 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 13 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1108 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:59:47,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1108 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 06:59:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-23 06:59:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 269. [2023-11-23 06:59:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 184 states have (on average 1.233695652173913) internal successors, (227), 188 states have internal predecessors, (227), 60 states have call successors, (60), 20 states have call predecessors, (60), 24 states have return successors, (65), 60 states have call predecessors, (65), 56 states have call successors, (65) [2023-11-23 06:59:47,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 352 transitions. [2023-11-23 06:59:47,163 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 352 transitions. Word has length 130 [2023-11-23 06:59:47,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:59:47,163 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 352 transitions. [2023-11-23 06:59:47,163 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, (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 06:59:47,164 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 352 transitions. [2023-11-23 06:59:47,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 06:59:47,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:59:47,165 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:59:47,188 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 06:59:47,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 06:59:47,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:59:47,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:59:47,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1277239291, now seen corresponding path program 2 times [2023-11-23 06:59:47,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:59:47,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57192920] [2023-11-23 06:59:47,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:59:47,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:59:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:48,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:59:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 06:59:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 06:59:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 06:59:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 06:59:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 06:59:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 06:59:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:59:48,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 06:59:48,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 06:59:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 06:59:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 06:59:48,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:59:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 06:59:48,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:59:48,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57192920] [2023-11-23 06:59:48,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57192920] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:59:48,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136929377] [2023-11-23 06:59:48,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:59:48,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:59:48,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:59:48,268 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 06:59:48,296 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 06:59:48,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 06:59:48,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:59:48,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 2800 conjuncts, 58 conjunts are in the unsatisfiable core [2023-11-23 06:59:48,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:59:48,917 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 06:59:48,931 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 06:59:49,544 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 90 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 06:59:49,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:59:49,928 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 54 proven. 13 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2023-11-23 06:59:49,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136929377] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:59:49,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:59:49,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 9] total 29 [2023-11-23 06:59:49,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480479229] [2023-11-23 06:59:49,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:59:49,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 06:59:49,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:59:49,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 06:59:49,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2023-11-23 06:59:49,930 INFO L87 Difference]: Start difference. First operand 269 states and 352 transitions. Second operand has 29 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 9 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (33), 8 states have call predecessors, (33), 9 states have call successors, (33) [2023-11-23 06:59:52,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:55,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:57,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:59:59,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:02,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:02,722 INFO L93 Difference]: Finished difference Result 583 states and 760 transitions. [2023-11-23 07:00:02,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-23 07:00:02,723 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 9 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (33), 8 states have call predecessors, (33), 9 states have call successors, (33) Word has length 132 [2023-11-23 07:00:02,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:02,725 INFO L225 Difference]: With dead ends: 583 [2023-11-23 07:00:02,725 INFO L226 Difference]: Without dead ends: 322 [2023-11-23 07:00:02,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 276 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 860 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=609, Invalid=4083, Unknown=0, NotChecked=0, Total=4692 [2023-11-23 07:00:02,728 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 333 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 177 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 3414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:02,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 825 Invalid, 3414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 3233 Invalid, 4 Unknown, 0 Unchecked, 11.6s Time] [2023-11-23 07:00:02,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2023-11-23 07:00:02,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 292. [2023-11-23 07:00:02,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 205 states have (on average 1.2) internal successors, (246), 209 states have internal predecessors, (246), 60 states have call successors, (60), 22 states have call predecessors, (60), 26 states have return successors, (65), 60 states have call predecessors, (65), 56 states have call successors, (65) [2023-11-23 07:00:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 371 transitions. [2023-11-23 07:00:02,749 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 371 transitions. Word has length 132 [2023-11-23 07:00:02,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:02,749 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 371 transitions. [2023-11-23 07:00:02,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 4.961538461538462) internal successors, (129), 26 states have internal predecessors, (129), 9 states have call successors, (38), 5 states have call predecessors, (38), 7 states have return successors, (33), 8 states have call predecessors, (33), 9 states have call successors, (33) [2023-11-23 07:00:02,750 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 371 transitions. [2023-11-23 07:00:02,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 07:00:02,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:02,751 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:02,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 07:00:02,971 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,SelfDestructingSolverStorable13 [2023-11-23 07:00:02,971 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:02,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:02,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1597301644, now seen corresponding path program 1 times [2023-11-23 07:00:02,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:02,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788742758] [2023-11-23 07:00:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:05,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:00:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:00:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:00:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:00:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:00:05,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:00:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 07:00:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:05,755 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 26 proven. 36 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 07:00:05,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788742758] [2023-11-23 07:00:05,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788742758] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:00:05,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707328725] [2023-11-23 07:00:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:05,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:05,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:00:05,757 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:00:05,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 07:00:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:07,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 2799 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-23 07:00:07,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:00:07,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 07:00:08,623 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 07:00:08,624 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:00:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 56 proven. 13 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 07:00:09,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707328725] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:00:09,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:00:09,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 12] total 40 [2023-11-23 07:00:09,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035395222] [2023-11-23 07:00:09,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:00:09,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-23 07:00:09,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:09,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-23 07:00:09,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1410, Unknown=0, NotChecked=0, Total=1560 [2023-11-23 07:00:09,437 INFO L87 Difference]: Start difference. First operand 292 states and 371 transitions. Second operand has 40 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 37 states have internal predecessors, (143), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2023-11-23 07:00:17,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:17,845 INFO L93 Difference]: Finished difference Result 852 states and 1097 transitions. [2023-11-23 07:00:17,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-23 07:00:17,845 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 37 states have internal predecessors, (143), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) Word has length 134 [2023-11-23 07:00:17,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:17,848 INFO L225 Difference]: With dead ends: 852 [2023-11-23 07:00:17,848 INFO L226 Difference]: Without dead ends: 583 [2023-11-23 07:00:17,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 281 SyntacticMatches, 5 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1836 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1105, Invalid=6551, Unknown=0, NotChecked=0, Total=7656 [2023-11-23 07:00:17,852 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 537 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 5343 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 5552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 5343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:17,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 1770 Invalid, 5552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 5343 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-23 07:00:17,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-11-23 07:00:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 512. [2023-11-23 07:00:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 361 states have (on average 1.1939058171745152) internal successors, (431), 372 states have internal predecessors, (431), 103 states have call successors, (103), 35 states have call predecessors, (103), 47 states have return successors, (122), 104 states have call predecessors, (122), 97 states have call successors, (122) [2023-11-23 07:00:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 656 transitions. [2023-11-23 07:00:17,895 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 656 transitions. Word has length 134 [2023-11-23 07:00:17,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:17,895 INFO L495 AbstractCegarLoop]: Abstraction has 512 states and 656 transitions. [2023-11-23 07:00:17,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 37 states have internal predecessors, (143), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (35), 10 states have call predecessors, (35), 10 states have call successors, (35) [2023-11-23 07:00:17,896 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 656 transitions. [2023-11-23 07:00:17,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 07:00:17,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:17,897 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:17,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 07:00:18,108 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,SelfDestructingSolverStorable14 [2023-11-23 07:00:18,109 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:18,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:18,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1762786486, now seen corresponding path program 1 times [2023-11-23 07:00:18,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:18,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210988935] [2023-11-23 07:00:18,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:18,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:00:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:00:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:00:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:00:21,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:00:21,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:00:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:21,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 07:00:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:22,144 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 39 proven. 45 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-23 07:00:22,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210988935] [2023-11-23 07:00:22,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210988935] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:00:22,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356347892] [2023-11-23 07:00:22,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:22,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:22,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:00:22,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:00:22,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 07:00:23,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:23,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 2814 conjuncts, 60 conjunts are in the unsatisfiable core [2023-11-23 07:00:23,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:00:23,209 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:00:23,523 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 16 treesize of output 8 [2023-11-23 07:00:23,944 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 104 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 07:00:23,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:00:24,288 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 42 treesize of output 30 [2023-11-23 07:00:24,373 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 07:00:24,551 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 28 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2023-11-23 07:00:24,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356347892] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:00:24,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:00:24,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 15, 13] total 49 [2023-11-23 07:00:24,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945732534] [2023-11-23 07:00:24,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:00:24,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-23 07:00:24,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:24,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-23 07:00:24,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2185, Unknown=0, NotChecked=0, Total=2352 [2023-11-23 07:00:24,578 INFO L87 Difference]: Start difference. First operand 512 states and 656 transitions. Second operand has 49 states, 42 states have (on average 4.333333333333333) internal successors, (182), 41 states have internal predecessors, (182), 16 states have call successors, (43), 7 states have call predecessors, (43), 11 states have return successors, (40), 18 states have call predecessors, (40), 16 states have call successors, (40) [2023-11-23 07:00:27,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:31,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:33,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:40,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:43,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:46,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:00:48,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:48,627 INFO L93 Difference]: Finished difference Result 1152 states and 1453 transitions. [2023-11-23 07:00:48,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-11-23 07:00:48,628 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 42 states have (on average 4.333333333333333) internal successors, (182), 41 states have internal predecessors, (182), 16 states have call successors, (43), 7 states have call predecessors, (43), 11 states have return successors, (40), 18 states have call predecessors, (40), 16 states have call successors, (40) Word has length 134 [2023-11-23 07:00:48,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:48,631 INFO L225 Difference]: With dead ends: 1152 [2023-11-23 07:00:48,632 INFO L226 Difference]: Without dead ends: 702 [2023-11-23 07:00:48,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 278 SyntacticMatches, 6 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4596 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1854, Invalid=13646, Unknown=0, NotChecked=0, Total=15500 [2023-11-23 07:00:48,639 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 666 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 8602 mSolverCounterSat, 297 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 8905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 8602 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:48,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 1881 Invalid, 8905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 8602 Invalid, 6 Unknown, 0 Unchecked, 20.3s Time] [2023-11-23 07:00:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-11-23 07:00:48,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 651. [2023-11-23 07:00:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 462 states have (on average 1.1861471861471862) internal successors, (548), 476 states have internal predecessors, (548), 129 states have call successors, (129), 46 states have call predecessors, (129), 59 states have return successors, (152), 128 states have call predecessors, (152), 122 states have call successors, (152) [2023-11-23 07:00:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 829 transitions. [2023-11-23 07:00:48,697 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 829 transitions. Word has length 134 [2023-11-23 07:00:48,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:48,698 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 829 transitions. [2023-11-23 07:00:48,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 42 states have (on average 4.333333333333333) internal successors, (182), 41 states have internal predecessors, (182), 16 states have call successors, (43), 7 states have call predecessors, (43), 11 states have return successors, (40), 18 states have call predecessors, (40), 16 states have call successors, (40) [2023-11-23 07:00:48,698 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 829 transitions. [2023-11-23 07:00:48,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-23 07:00:48,700 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:48,700 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:48,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 07:00:48,916 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,SelfDestructingSolverStorable15 [2023-11-23 07:00:48,916 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:48,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:48,917 INFO L85 PathProgramCache]: Analyzing trace with hash -22806993, now seen corresponding path program 1 times [2023-11-23 07:00:48,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:48,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018383343] [2023-11-23 07:00:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:48,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:49,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:00:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:00:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:00:49,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:49,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:00:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:00:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:00:49,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 07:00:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2023-11-23 07:00:49,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:49,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018383343] [2023-11-23 07:00:49,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018383343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:00:49,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:00:49,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 07:00:49,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095589761] [2023-11-23 07:00:49,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:00:49,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:00:49,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:00:49,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:00:49,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:00:49,823 INFO L87 Difference]: Start difference. First operand 651 states and 829 transitions. Second operand has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 07:00:51,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:00:51,199 INFO L93 Difference]: Finished difference Result 666 states and 843 transitions. [2023-11-23 07:00:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:00:51,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 136 [2023-11-23 07:00:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:00:51,203 INFO L225 Difference]: With dead ends: 666 [2023-11-23 07:00:51,203 INFO L226 Difference]: Without dead ends: 664 [2023-11-23 07:00:51,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 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 07:00:51,204 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 107 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:00:51,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 603 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 07:00:51,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-11-23 07:00:51,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 659. [2023-11-23 07:00:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 468 states have (on average 1.1837606837606838) internal successors, (554), 482 states have internal predecessors, (554), 129 states have call successors, (129), 48 states have call predecessors, (129), 61 states have return successors, (152), 128 states have call predecessors, (152), 122 states have call successors, (152) [2023-11-23 07:00:51,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 835 transitions. [2023-11-23 07:00:51,262 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 835 transitions. Word has length 136 [2023-11-23 07:00:51,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:00:51,263 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 835 transitions. [2023-11-23 07:00:51,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2023-11-23 07:00:51,263 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 835 transitions. [2023-11-23 07:00:51,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-23 07:00:51,265 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:00:51,265 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:00:51,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 07:00:51,266 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:00:51,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:00:51,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1360107023, now seen corresponding path program 1 times [2023-11-23 07:00:51,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:00:51,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809265741] [2023-11-23 07:00:51,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:51,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:00:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:54,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:54,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:00:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:54,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:00:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:54,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:54,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:00:54,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:55,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:00:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:00:55,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:55,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:00:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:55,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:00:55,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:00:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:55,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:00:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:55,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:00:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:55,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:00:55,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:55,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:00:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:55,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:00:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:55,623 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 26 proven. 36 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2023-11-23 07:00:55,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:00:55,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809265741] [2023-11-23 07:00:55,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809265741] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:00:55,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565824953] [2023-11-23 07:00:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:00:55,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:00:55,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:00:55,625 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:00:55,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 07:00:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:00:59,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 88 conjunts are in the unsatisfiable core [2023-11-23 07:00:59,041 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:01:00,430 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 97 proven. 17 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 07:01:00,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:01:01,296 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 56 proven. 13 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 07:01:01,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565824953] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:01:01,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:01:01,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 12] total 44 [2023-11-23 07:01:01,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313282066] [2023-11-23 07:01:01,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:01:01,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-23 07:01:01,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:01,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-23 07:01:01,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1719, Unknown=0, NotChecked=0, Total=1892 [2023-11-23 07:01:01,308 INFO L87 Difference]: Start difference. First operand 659 states and 835 transitions. Second operand has 44 states, 42 states have (on average 3.8095238095238093) internal successors, (160), 40 states have internal predecessors, (160), 11 states have call successors, (43), 6 states have call predecessors, (43), 8 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) [2023-11-23 07:01:03,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:07,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:09,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:11,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:17,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:19,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:01:21,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:21,429 INFO L93 Difference]: Finished difference Result 911 states and 1132 transitions. [2023-11-23 07:01:21,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-23 07:01:21,430 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 3.8095238095238093) internal successors, (160), 40 states have internal predecessors, (160), 11 states have call successors, (43), 6 states have call predecessors, (43), 8 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) Word has length 140 [2023-11-23 07:01:21,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:21,435 INFO L225 Difference]: With dead ends: 911 [2023-11-23 07:01:21,435 INFO L226 Difference]: Without dead ends: 809 [2023-11-23 07:01:21,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 294 SyntacticMatches, 5 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2018 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=875, Invalid=6097, Unknown=0, NotChecked=0, Total=6972 [2023-11-23 07:01:21,438 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 521 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 4195 mSolverCounterSat, 206 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 4407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 4195 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:21,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 973 Invalid, 4407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 4195 Invalid, 6 Unknown, 0 Unchecked, 17.9s Time] [2023-11-23 07:01:21,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2023-11-23 07:01:21,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 660. [2023-11-23 07:01:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 470 states have (on average 1.1829787234042553) internal successors, (556), 483 states have internal predecessors, (556), 129 states have call successors, (129), 48 states have call predecessors, (129), 60 states have return successors, (150), 128 states have call predecessors, (150), 122 states have call successors, (150) [2023-11-23 07:01:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 835 transitions. [2023-11-23 07:01:21,517 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 835 transitions. Word has length 140 [2023-11-23 07:01:21,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:21,518 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 835 transitions. [2023-11-23 07:01:21,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 3.8095238095238093) internal successors, (160), 40 states have internal predecessors, (160), 11 states have call successors, (43), 6 states have call predecessors, (43), 8 states have return successors, (38), 10 states have call predecessors, (38), 10 states have call successors, (38) [2023-11-23 07:01:21,518 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 835 transitions. [2023-11-23 07:01:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-23 07:01:21,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:21,520 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:21,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 07:01:21,735 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,SelfDestructingSolverStorable17 [2023-11-23 07:01:21,735 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:21,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1614454968, now seen corresponding path program 1 times [2023-11-23 07:01:21,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:21,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35361731] [2023-11-23 07:01:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:21,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:24,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:01:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:24,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:01:24,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:24,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:24,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:01:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:25,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:01:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:25,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:01:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:25,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:01:25,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:25,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:01:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:25,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:01:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:25,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:25,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:01:25,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:25,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:01:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:25,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:01:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:25,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:01:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 36 proven. 47 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 07:01:25,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:25,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35361731] [2023-11-23 07:01:25,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35361731] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:01:25,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436856860] [2023-11-23 07:01:25,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:25,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:25,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:01:25,577 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:01:25,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 07:01:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:26,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 2869 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-23 07:01:26,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:01:26,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 07:01:28,548 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 52 proven. 96 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 07:01:28,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:01:29,344 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 07:01:29,482 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-23 07:01:29,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436856860] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 07:01:29,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:01:29,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [29, 23] total 65 [2023-11-23 07:01:29,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404417480] [2023-11-23 07:01:29,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:01:29,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 07:01:29,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:29,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 07:01:29,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=3955, Unknown=0, NotChecked=0, Total=4160 [2023-11-23 07:01:29,485 INFO L87 Difference]: Start difference. First operand 660 states and 835 transitions. Second operand has 18 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 07:01:31,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:31,058 INFO L93 Difference]: Finished difference Result 678 states and 852 transitions. [2023-11-23 07:01:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 07:01:31,059 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) Word has length 142 [2023-11-23 07:01:31,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:31,062 INFO L225 Difference]: With dead ends: 678 [2023-11-23 07:01:31,063 INFO L226 Difference]: Without dead ends: 676 [2023-11-23 07:01:31,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 259 SyntacticMatches, 18 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1402 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=279, Invalid=5271, Unknown=0, NotChecked=0, Total=5550 [2023-11-23 07:01:31,065 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 66 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:31,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1798 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:01:31,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-11-23 07:01:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 664. [2023-11-23 07:01:31,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 473 states have (on average 1.1818181818181819) internal successors, (559), 486 states have internal predecessors, (559), 129 states have call successors, (129), 49 states have call predecessors, (129), 61 states have return successors, (150), 128 states have call predecessors, (150), 122 states have call successors, (150) [2023-11-23 07:01:31,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 838 transitions. [2023-11-23 07:01:31,143 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 838 transitions. Word has length 142 [2023-11-23 07:01:31,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:31,143 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 838 transitions. [2023-11-23 07:01:31,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.133333333333334) internal successors, (62), 14 states have internal predecessors, (62), 6 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (15), 7 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-23 07:01:31,144 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 838 transitions. [2023-11-23 07:01:31,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-23 07:01:31,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:31,146 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:31,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 07:01:31,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:31,360 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:31,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:31,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1866905380, now seen corresponding path program 1 times [2023-11-23 07:01:31,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:31,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143536262] [2023-11-23 07:01:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:31,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:01:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:01:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:01:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:01:31,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:01:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:01:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:01:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:01:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:01:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 07:01:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:01:31,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:01:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-23 07:01:31,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:31,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143536262] [2023-11-23 07:01:31,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143536262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:01:31,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:01:31,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 07:01:31,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768970147] [2023-11-23 07:01:31,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:01:31,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:01:31,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:31,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:01:31,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:01:31,955 INFO L87 Difference]: Start difference. First operand 664 states and 838 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 07:01:33,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:33,581 INFO L93 Difference]: Finished difference Result 800 states and 994 transitions. [2023-11-23 07:01:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:01:33,581 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 146 [2023-11-23 07:01:33,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:33,584 INFO L225 Difference]: With dead ends: 800 [2023-11-23 07:01:33,584 INFO L226 Difference]: Without dead ends: 662 [2023-11-23 07:01:33,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:01:33,586 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 126 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:33,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 242 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 07:01:33,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2023-11-23 07:01:33,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 646. [2023-11-23 07:01:33,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 464 states have (on average 1.1788793103448276) internal successors, (547), 477 states have internal predecessors, (547), 120 states have call successors, (120), 49 states have call predecessors, (120), 61 states have return successors, (141), 119 states have call predecessors, (141), 113 states have call successors, (141) [2023-11-23 07:01:33,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 808 transitions. [2023-11-23 07:01:33,699 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 808 transitions. Word has length 146 [2023-11-23 07:01:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:33,700 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 808 transitions. [2023-11-23 07:01:33,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2023-11-23 07:01:33,700 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 808 transitions. [2023-11-23 07:01:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-23 07:01:33,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:33,702 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:33,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 07:01:33,702 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:33,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:33,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2094279043, now seen corresponding path program 1 times [2023-11-23 07:01:33,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:33,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872194819] [2023-11-23 07:01:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:33,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:34,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:01:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:01:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:01:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:01:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:01:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:01:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:01:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:01:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:01:34,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 07:01:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:01:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:01:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-23 07:01:34,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:34,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872194819] [2023-11-23 07:01:34,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872194819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:01:34,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:01:34,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 07:01:34,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216530470] [2023-11-23 07:01:34,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:01:34,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:01:34,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:34,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:01:34,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:01:34,510 INFO L87 Difference]: Start difference. First operand 646 states and 808 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 07:01:36,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:36,377 INFO L93 Difference]: Finished difference Result 688 states and 852 transitions. [2023-11-23 07:01:36,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:01:36,378 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 147 [2023-11-23 07:01:36,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:36,381 INFO L225 Difference]: With dead ends: 688 [2023-11-23 07:01:36,381 INFO L226 Difference]: Without dead ends: 686 [2023-11-23 07:01:36,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:01:36,382 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 158 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:36,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 207 Invalid, 941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 07:01:36,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2023-11-23 07:01:36,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 670. [2023-11-23 07:01:36,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 482 states have (on average 1.1721991701244814) internal successors, (565), 495 states have internal predecessors, (565), 120 states have call successors, (120), 55 states have call predecessors, (120), 67 states have return successors, (141), 119 states have call predecessors, (141), 113 states have call successors, (141) [2023-11-23 07:01:36,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 826 transitions. [2023-11-23 07:01:36,481 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 826 transitions. Word has length 147 [2023-11-23 07:01:36,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:36,482 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 826 transitions. [2023-11-23 07:01:36,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 6 states have internal predecessors, (54), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 07:01:36,482 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 826 transitions. [2023-11-23 07:01:36,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 07:01:36,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:36,484 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:36,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 07:01:36,484 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:36,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:36,485 INFO L85 PathProgramCache]: Analyzing trace with hash 982043005, now seen corresponding path program 1 times [2023-11-23 07:01:36,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:36,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000692197] [2023-11-23 07:01:36,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:36,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:37,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:01:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:01:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:01:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:01:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:01:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:01:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:01:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:01:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:01:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 07:01:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:01:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:01:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 07:01:37,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-23 07:01:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:37,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000692197] [2023-11-23 07:01:37,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000692197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:01:37,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:01:37,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 07:01:37,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751902727] [2023-11-23 07:01:37,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:01:37,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:01:37,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:37,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:01:37,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:01:37,937 INFO L87 Difference]: Start difference. First operand 670 states and 826 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 07:01:40,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:40,482 INFO L93 Difference]: Finished difference Result 704 states and 862 transitions. [2023-11-23 07:01:40,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 07:01:40,483 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 153 [2023-11-23 07:01:40,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:40,487 INFO L225 Difference]: With dead ends: 704 [2023-11-23 07:01:40,488 INFO L226 Difference]: Without dead ends: 702 [2023-11-23 07:01:40,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:01:40,489 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 157 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:40,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 302 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-23 07:01:40,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-11-23 07:01:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 682. [2023-11-23 07:01:40,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 491 states have (on average 1.1690427698574337) internal successors, (574), 504 states have internal predecessors, (574), 120 states have call successors, (120), 58 states have call predecessors, (120), 70 states have return successors, (141), 119 states have call predecessors, (141), 113 states have call successors, (141) [2023-11-23 07:01:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 835 transitions. [2023-11-23 07:01:40,600 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 835 transitions. Word has length 153 [2023-11-23 07:01:40,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:40,601 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 835 transitions. [2023-11-23 07:01:40,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 8 states have internal predecessors, (55), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-23 07:01:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 835 transitions. [2023-11-23 07:01:40,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-23 07:01:40,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:40,603 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:40,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 07:01:40,603 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:40,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -485088787, now seen corresponding path program 1 times [2023-11-23 07:01:40,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:40,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864851786] [2023-11-23 07:01:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:40,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:01:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:01:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:01:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:01:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:01:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:01:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:01:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:01:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:01:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:01:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:01:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:01:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:01:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 07:01:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:41,449 INFO L134 CoverageAnalysis]: Checked inductivity of 258 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-23 07:01:41,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:41,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864851786] [2023-11-23 07:01:41,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864851786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:01:41,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:01:41,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 07:01:41,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245212105] [2023-11-23 07:01:41,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:01:41,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:01:41,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:41,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:01:41,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:01:41,452 INFO L87 Difference]: Start difference. First operand 682 states and 835 transitions. Second operand has 10 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 07:01:43,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:43,906 INFO L93 Difference]: Finished difference Result 704 states and 859 transitions. [2023-11-23 07:01:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:01:43,906 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2023-11-23 07:01:43,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:43,910 INFO L225 Difference]: With dead ends: 704 [2023-11-23 07:01:43,910 INFO L226 Difference]: Without dead ends: 702 [2023-11-23 07:01:43,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:01:43,913 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 156 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:43,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 379 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 07:01:43,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-11-23 07:01:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 686. [2023-11-23 07:01:44,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 494 states have (on average 1.1680161943319838) internal successors, (577), 507 states have internal predecessors, (577), 120 states have call successors, (120), 59 states have call predecessors, (120), 71 states have return successors, (141), 119 states have call predecessors, (141), 113 states have call successors, (141) [2023-11-23 07:01:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 838 transitions. [2023-11-23 07:01:44,007 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 838 transitions. Word has length 162 [2023-11-23 07:01:44,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:44,007 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 838 transitions. [2023-11-23 07:01:44,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (20), 2 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-23 07:01:44,008 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 838 transitions. [2023-11-23 07:01:44,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 07:01:44,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:44,010 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:44,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 07:01:44,010 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:44,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:44,010 INFO L85 PathProgramCache]: Analyzing trace with hash 853044583, now seen corresponding path program 1 times [2023-11-23 07:01:44,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:44,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214170950] [2023-11-23 07:01:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:44,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:44,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:01:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:01:44,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:01:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:01:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:01:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:01:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:01:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:01:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:01:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:01:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:01:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:01:44,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:44,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:45,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:01:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:45,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:01:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:45,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 07:01:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:45,050 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-11-23 07:01:45,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:45,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214170950] [2023-11-23 07:01:45,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214170950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:01:45,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:01:45,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 07:01:45,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180634435] [2023-11-23 07:01:45,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:01:45,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:01:45,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:45,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:01:45,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:01:45,053 INFO L87 Difference]: Start difference. First operand 686 states and 838 transitions. Second operand has 11 states, 10 states have (on average 5.9) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-23 07:01:48,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:01:48,022 INFO L93 Difference]: Finished difference Result 918 states and 1135 transitions. [2023-11-23 07:01:48,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:01:48,022 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) Word has length 166 [2023-11-23 07:01:48,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:01:48,026 INFO L225 Difference]: With dead ends: 918 [2023-11-23 07:01:48,026 INFO L226 Difference]: Without dead ends: 689 [2023-11-23 07:01:48,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:01:48,027 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 149 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 879 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:01:48,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 383 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 879 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-23 07:01:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-11-23 07:01:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 689. [2023-11-23 07:01:48,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 497 states have (on average 1.1670020120724347) internal successors, (580), 510 states have internal predecessors, (580), 120 states have call successors, (120), 59 states have call predecessors, (120), 71 states have return successors, (141), 119 states have call predecessors, (141), 113 states have call successors, (141) [2023-11-23 07:01:48,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 841 transitions. [2023-11-23 07:01:48,137 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 841 transitions. Word has length 166 [2023-11-23 07:01:48,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:01:48,138 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 841 transitions. [2023-11-23 07:01:48,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (22), 5 states have call predecessors, (22), 3 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-23 07:01:48,138 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 841 transitions. [2023-11-23 07:01:48,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-23 07:01:48,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:01:48,140 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:01:48,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 07:01:48,140 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:01:48,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:01:48,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1968552581, now seen corresponding path program 1 times [2023-11-23 07:01:48,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:01:48,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057710259] [2023-11-23 07:01:48,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:48,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:01:48,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:01:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:01:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:51,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:51,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:01:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:01:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:01:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 07:01:52,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:01:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:01:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:01:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 07:01:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 07:01:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:01:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:01:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 07:01:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 07:01:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:52,427 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-11-23 07:01:52,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:01:52,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057710259] [2023-11-23 07:01:52,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057710259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:01:52,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511675833] [2023-11-23 07:01:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:01:52,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:01:52,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:01:52,432 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:01:52,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 07:01:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:01:53,512 INFO L262 TraceCheckSpWp]: Trace formula consists of 2878 conjuncts, 92 conjunts are in the unsatisfiable core [2023-11-23 07:01:53,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:01:53,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:01:53,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:01:53,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 07:01:54,013 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-23 07:01:54,014 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 26 treesize of output 10 [2023-11-23 07:01:54,056 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 19 proven. 38 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2023-11-23 07:01:54,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:01:54,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511675833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:01:54,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:01:54,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20] total 31 [2023-11-23 07:01:54,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468700626] [2023-11-23 07:01:54,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:01:54,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 07:01:54,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:01:54,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 07:01:54,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=1157, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 07:01:54,719 INFO L87 Difference]: Start difference. First operand 689 states and 841 transitions. Second operand has 31 states, 25 states have (on average 3.8) internal successors, (95), 27 states have internal predecessors, (95), 15 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (29), 12 states have call predecessors, (29), 13 states have call successors, (29) [2023-11-23 07:02:00,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:02:00,889 INFO L93 Difference]: Finished difference Result 721 states and 873 transitions. [2023-11-23 07:02:00,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-23 07:02:00,890 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 3.8) internal successors, (95), 27 states have internal predecessors, (95), 15 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (29), 12 states have call predecessors, (29), 13 states have call successors, (29) Word has length 159 [2023-11-23 07:02:00,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:02:00,893 INFO L225 Difference]: With dead ends: 721 [2023-11-23 07:02:00,893 INFO L226 Difference]: Without dead ends: 719 [2023-11-23 07:02:00,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 193 SyntacticMatches, 11 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=294, Invalid=2568, Unknown=0, NotChecked=0, Total=2862 [2023-11-23 07:02:00,895 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 259 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 3247 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:02:00,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 737 Invalid, 3386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 3247 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 07:02:00,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-11-23 07:02:01,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 701. [2023-11-23 07:02:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 506 states have (on average 1.1640316205533596) internal successors, (589), 519 states have internal predecessors, (589), 120 states have call successors, (120), 62 states have call predecessors, (120), 74 states have return successors, (141), 119 states have call predecessors, (141), 113 states have call successors, (141) [2023-11-23 07:02:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 850 transitions. [2023-11-23 07:02:01,028 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 850 transitions. Word has length 159 [2023-11-23 07:02:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:02:01,028 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 850 transitions. [2023-11-23 07:02:01,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 3.8) internal successors, (95), 27 states have internal predecessors, (95), 15 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (29), 12 states have call predecessors, (29), 13 states have call successors, (29) [2023-11-23 07:02:01,030 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 850 transitions. [2023-11-23 07:02:01,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-23 07:02:01,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:02:01,032 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:02:01,061 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 07:02:01,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:02:01,253 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:02:01,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:02:01,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1858003415, now seen corresponding path program 1 times [2023-11-23 07:02:01,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:02:01,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403601461] [2023-11-23 07:02:01,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:02:01,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:02:01,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 07:02:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:02:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-23 07:02:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:02:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:02:01,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:02:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 07:02:01,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 07:02:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 07:02:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:02:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:01,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:02:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:02,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:02:02,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:02,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:02,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:02:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:02,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:02:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:02,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:02:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:02,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 07:02:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2023-11-23 07:02:02,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:02:02,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403601461] [2023-11-23 07:02:02,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403601461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:02:02,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562416811] [2023-11-23 07:02:02,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:02:02,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:02:02,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:02:02,237 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 07:02:02,238 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 07:02:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:02:02,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 3123 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-23 07:02:02,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:02:03,324 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 183 proven. 5 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-11-23 07:02:03,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:02:03,655 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 07:02:03,656 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 07:02:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 71 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-23 07:02:03,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562416811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:02:03,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:02:03,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-11-23 07:02:03,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290753168] [2023-11-23 07:02:03,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:02:03,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 07:02:03,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:02:03,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 07:02:03,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2023-11-23 07:02:03,685 INFO L87 Difference]: Start difference. First operand 701 states and 850 transitions. Second operand has 26 states, 24 states have (on average 7.041666666666667) internal successors, (169), 23 states have internal predecessors, (169), 7 states have call successors, (53), 6 states have call predecessors, (53), 8 states have return successors, (49), 6 states have call predecessors, (49), 7 states have call successors, (49) [2023-11-23 07:02:06,368 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] Killed by 15