./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_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 c6f394469998c48e6ef18c3b42ee2a3474a6570f40012cad15c840d16c47e9d4 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:46:20,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:46:20,374 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:46:20,379 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:46:20,379 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:46:20,403 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:46:20,403 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:46:20,403 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:46:20,404 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:46:20,407 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:46:20,407 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:46:20,408 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:46:20,409 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:46:20,410 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:46:20,410 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:46:20,410 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:46:20,410 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:46:20,410 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:46:20,411 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:46:20,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:46:20,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:46:20,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:46:20,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:46:20,412 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:46:20,412 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:46:20,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:46:20,413 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:46:20,413 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:46:20,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:46:20,413 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:46:20,414 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:46:20,414 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:46:20,415 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:46:20,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:46:20,415 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:46:20,415 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:46:20,415 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:46:20,415 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:46:20,416 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:46:20,416 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6f394469998c48e6ef18c3b42ee2a3474a6570f40012cad15c840d16c47e9d4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:46:20,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:46:20,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:46:20,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:46:20,674 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:46:20,674 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:46:20,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i [2023-11-23 07:46:21,787 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:46:22,257 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:46:22,258 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i [2023-11-23 07:46:22,329 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41bdbbb51/a30743c39edc41109921394544e17d0e/FLAGf9739dfa7 [2023-11-23 07:46:22,341 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41bdbbb51/a30743c39edc41109921394544e17d0e [2023-11-23 07:46:22,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:46:22,357 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:46:22,359 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:46:22,359 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:46:22,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:46:22,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:46:22" (1/1) ... [2023-11-23 07:46:22,364 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2062cdff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:22, skipping insertion in model container [2023-11-23 07:46:22,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:46:22" (1/1) ... [2023-11-23 07:46:22,646 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:46:23,005 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i[4508,4521] [2023-11-23 07:46:23,015 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i[4568,4581] [2023-11-23 07:46:23,592 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:23,592 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:23,593 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:23,593 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:23,594 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:23,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:23,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:23,617 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:23,617 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:23,847 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:46:23,849 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:46:23,853 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:46:23,854 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:46:23,855 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:46:23,855 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:46:23,855 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:46:23,856 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:46:23,856 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:46:23,857 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:46:23,999 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,000 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:46:24,149 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:46:24,164 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i[4508,4521] [2023-11-23 07:46:24,165 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i[4568,4581] [2023-11-23 07:46:24,186 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,186 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,187 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,187 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,187 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,190 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,192 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,212 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:46:24,212 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:46:24,213 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:46:24,213 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:46:24,214 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:46:24,214 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:46:24,214 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:46:24,215 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:46:24,215 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:46:24,215 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:46:24,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2023-11-23 07:46:24,267 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,267 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:46:24,277 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2023-11-23 07:46:24,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:46:24,468 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,469 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,469 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,469 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,469 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,469 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,469 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,470 WARN L675 CHandler]: The function s_global_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,470 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,470 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,471 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,471 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,471 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,471 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,471 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,472 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,472 WARN L675 CHandler]: The function tl_thread_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,472 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,472 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,472 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:46:24,478 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:46:24,479 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24 WrapperNode [2023-11-23 07:46:24,479 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:46:24,480 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:46:24,480 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:46:24,480 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:46:24,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (1/1) ... [2023-11-23 07:46:24,542 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (1/1) ... [2023-11-23 07:46:24,590 INFO L138 Inliner]: procedures = 692, calls = 2789, calls flagged for inlining = 60, calls inlined = 7, statements flattened = 846 [2023-11-23 07:46:24,591 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:46:24,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:46:24,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:46:24,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:46:24,602 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (1/1) ... [2023-11-23 07:46:24,603 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (1/1) ... [2023-11-23 07:46:24,608 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (1/1) ... [2023-11-23 07:46:24,673 INFO L188 MemorySlicer]: Split 531 memory accesses to 7 slices as follows [2, 15, 258, 236, 15, 2, 3]. 49 percent of accesses are in the largest equivalence class. The 502 initializations are split as follows [2, 5, 256, 236, 0, 0, 3]. The 7 writes are split as follows [0, 3, 0, 0, 2, 2, 0]. [2023-11-23 07:46:24,673 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (1/1) ... [2023-11-23 07:46:24,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (1/1) ... [2023-11-23 07:46:24,706 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (1/1) ... [2023-11-23 07:46:24,718 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (1/1) ... [2023-11-23 07:46:24,727 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (1/1) ... [2023-11-23 07:46:24,736 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (1/1) ... [2023-11-23 07:46:24,746 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:46:24,751 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:46:24,752 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:46:24,752 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:46:24,753 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (1/1) ... [2023-11-23 07:46:24,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:46:24,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:46:24,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 07:46:24,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 07:46:24,832 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-23 07:46:24,832 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-23 07:46:24,832 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 07:46:24,832 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 07:46:24,832 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2023-11-23 07:46:24,832 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2023-11-23 07:46:24,832 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-23 07:46:24,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-23 07:46:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:46:24,833 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:46:24,834 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:46:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:46:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:46:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:46:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:46:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:46:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:46:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 07:46:24,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:46:24,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:46:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:46:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:46:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:46:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:46:24,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:46:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:46:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:46:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:46:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:46:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:46:24,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:46:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:46:24,836 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:46:24,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-23 07:46:24,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-23 07:46:24,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-23 07:46:24,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-23 07:46:24,837 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-23 07:46:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-23 07:46:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-23 07:46:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:46:24,838 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:46:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:46:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:46:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:46:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:46:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:46:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:46:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 07:46:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 07:46:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:46:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:46:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:46:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:46:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:46:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:46:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:46:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 07:46:24,840 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 07:46:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 07:46:24,840 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 07:46:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:46:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:46:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:46:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:46:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:46:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:46:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 07:46:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:46:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:46:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:46:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:46:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:46:24,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:46:24,843 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 07:46:25,187 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:46:25,188 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:46:25,931 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:46:26,014 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:46:26,015 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 07:46:26,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:46:26 BoogieIcfgContainer [2023-11-23 07:46:26,015 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:46:26,016 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:46:26,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:46:26,019 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:46:26,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:46:22" (1/3) ... [2023-11-23 07:46:26,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a9b477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:46:26, skipping insertion in model container [2023-11-23 07:46:26,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:46:24" (2/3) ... [2023-11-23 07:46:26,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a9b477 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:46:26, skipping insertion in model container [2023-11-23 07:46:26,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:46:26" (3/3) ... [2023-11-23 07:46:26,021 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_ignore_case_harness.i [2023-11-23 07:46:26,034 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:46:26,034 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:46:26,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:46:26,072 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;@5f867249, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:46:26,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:46:26,075 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 71 states have internal predecessors, (95), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-23 07:46:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 07:46:26,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:46:26,083 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 07:46:26,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:46:26,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:46:26,088 INFO L85 PathProgramCache]: Analyzing trace with hash -217893765, now seen corresponding path program 1 times [2023-11-23 07:46:26,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:46:26,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270479738] [2023-11-23 07:46:26,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:26,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:46:26,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:26,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:46:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:26,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:46:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:26,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:46:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:26,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:26,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:46:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:46:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:26,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:46:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:26,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:46:26,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:26,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:46:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 07:46:26,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:46:26,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270479738] [2023-11-23 07:46:26,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270479738] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:46:26,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:46:26,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 07:46:26,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524323932] [2023-11-23 07:46:26,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:46:26,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 07:46:26,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:46:26,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 07:46:26,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 07:46:26,613 INFO L87 Difference]: Start difference. First operand has 108 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 71 states have internal predecessors, (95), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:46:26,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:46:26,805 INFO L93 Difference]: Finished difference Result 206 states and 295 transitions. [2023-11-23 07:46:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 07:46:26,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 64 [2023-11-23 07:46:26,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:46:26,813 INFO L225 Difference]: With dead ends: 206 [2023-11-23 07:46:26,813 INFO L226 Difference]: Without dead ends: 106 [2023-11-23 07:46:26,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 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 07:46:26,818 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 55 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:46:26,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 117 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:46:26,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-23 07:46:26,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-11-23 07:46:26,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.318840579710145) internal successors, (91), 70 states have internal predecessors, (91), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 07:46:26,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 142 transitions. [2023-11-23 07:46:26,852 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 142 transitions. Word has length 64 [2023-11-23 07:46:26,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:46:26,853 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 142 transitions. [2023-11-23 07:46:26,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:46:26,854 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 142 transitions. [2023-11-23 07:46:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 07:46:26,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:46:26,856 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 07:46:26,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 07:46:26,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:46:26,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:46:26,857 INFO L85 PathProgramCache]: Analyzing trace with hash 416480569, now seen corresponding path program 1 times [2023-11-23 07:46:26,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:46:26,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759120023] [2023-11-23 07:46:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:46:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:27,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:27,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:46:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:27,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:46:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:27,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:46:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:27,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:27,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:46:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:27,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:46:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 07:46:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:46:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:27,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:46:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:46:27,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:46:27,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759120023] [2023-11-23 07:46:27,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759120023] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:46:27,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130879396] [2023-11-23 07:46:27,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:27,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:27,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:46:27,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:46:27,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 07:46:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:27,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 2508 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:46:27,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:46:27,873 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-23 07:46:27,873 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:46:27,952 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:46:27,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130879396] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:46:27,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:46:27,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-23 07:46:27,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038449775] [2023-11-23 07:46:27,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:46:27,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:46:27,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:46:27,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:46:27,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:46:27,956 INFO L87 Difference]: Start difference. First operand 106 states and 142 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2023-11-23 07:46:28,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:46:28,357 INFO L93 Difference]: Finished difference Result 175 states and 238 transitions. [2023-11-23 07:46:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:46:28,358 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 64 [2023-11-23 07:46:28,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:46:28,360 INFO L225 Difference]: With dead ends: 175 [2023-11-23 07:46:28,360 INFO L226 Difference]: Without dead ends: 108 [2023-11-23 07:46:28,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:46:28,362 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 213 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:46:28,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 277 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:46:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-23 07:46:28,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-23 07:46:28,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 72 states have internal predecessors, (92), 26 states have call successors, (26), 10 states have call predecessors, (26), 11 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-23 07:46:28,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2023-11-23 07:46:28,371 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 64 [2023-11-23 07:46:28,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:46:28,371 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2023-11-23 07:46:28,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 11 states have internal predecessors, (55), 7 states have call successors, (25), 4 states have call predecessors, (25), 5 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2023-11-23 07:46:28,371 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2023-11-23 07:46:28,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-23 07:46:28,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:46:28,373 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:46:28,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 07:46:28,588 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 07:46:28,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:46:28,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:46:28,589 INFO L85 PathProgramCache]: Analyzing trace with hash -545207504, now seen corresponding path program 1 times [2023-11-23 07:46:28,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:46:28,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370142414] [2023-11-23 07:46:28,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:28,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:46:28,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:28,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:28,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:46:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:28,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:46:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:28,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:46:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:28,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:28,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:46:28,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:28,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:46:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:28,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:46:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:28,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:46:28,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:28,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 07:46:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:28,992 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 07:46:28,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:46:28,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370142414] [2023-11-23 07:46:28,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370142414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:46:28,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:46:28,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:46:28,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237496767] [2023-11-23 07:46:28,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:46:28,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:46:28,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:46:28,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:46:28,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:46:28,994 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:46:29,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:46:29,225 INFO L93 Difference]: Finished difference Result 177 states and 242 transitions. [2023-11-23 07:46:29,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:46:29,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 72 [2023-11-23 07:46:29,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:46:29,227 INFO L225 Difference]: With dead ends: 177 [2023-11-23 07:46:29,227 INFO L226 Difference]: Without dead ends: 139 [2023-11-23 07:46:29,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 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 07:46:29,229 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 66 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:46:29,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 232 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:46:29,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-11-23 07:46:29,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2023-11-23 07:46:29,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.3068181818181819) internal successors, (115), 90 states have internal predecessors, (115), 37 states have call successors, (37), 10 states have call predecessors, (37), 11 states have return successors, (38), 36 states have call predecessors, (38), 36 states have call successors, (38) [2023-11-23 07:46:29,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 190 transitions. [2023-11-23 07:46:29,239 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 190 transitions. Word has length 72 [2023-11-23 07:46:29,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:46:29,239 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 190 transitions. [2023-11-23 07:46:29,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:46:29,240 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 190 transitions. [2023-11-23 07:46:29,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 07:46:29,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:46:29,241 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 07:46:29,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 07:46:29,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:46:29,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:46:29,242 INFO L85 PathProgramCache]: Analyzing trace with hash 2091272995, now seen corresponding path program 1 times [2023-11-23 07:46:29,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:46:29,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411388538] [2023-11-23 07:46:29,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:29,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:46:29,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:29,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:29,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:46:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:29,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:46:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:29,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:46:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:29,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:29,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:46:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:46:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:29,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:46:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:29,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:46:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:29,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 07:46:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-23 07:46:29,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:46:29,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411388538] [2023-11-23 07:46:29,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411388538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:46:29,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:46:29,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 07:46:29,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096239782] [2023-11-23 07:46:29,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:46:29,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:46:29,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:46:29,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:46:29,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:46:29,908 INFO L87 Difference]: Start difference. First operand 137 states and 190 transitions. Second operand has 9 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:46:30,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:46:30,260 INFO L93 Difference]: Finished difference Result 147 states and 203 transitions. [2023-11-23 07:46:30,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 07:46:30,261 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 76 [2023-11-23 07:46:30,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:46:30,263 INFO L225 Difference]: With dead ends: 147 [2023-11-23 07:46:30,263 INFO L226 Difference]: Without dead ends: 140 [2023-11-23 07:46:30,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:46:30,264 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 82 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:46:30,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 498 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:46:30,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-23 07:46:30,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2023-11-23 07:46:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.3) internal successors, (117), 93 states have internal predecessors, (117), 37 states have call successors, (37), 10 states have call predecessors, (37), 12 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2023-11-23 07:46:30,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 196 transitions. [2023-11-23 07:46:30,289 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 196 transitions. Word has length 76 [2023-11-23 07:46:30,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:46:30,290 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 196 transitions. [2023-11-23 07:46:30,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:46:30,290 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 196 transitions. [2023-11-23 07:46:30,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-23 07:46:30,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:46:30,291 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 07:46:30,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 07:46:30,291 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:46:30,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:46:30,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1224261597, now seen corresponding path program 1 times [2023-11-23 07:46:30,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:46:30,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552920097] [2023-11-23 07:46:30,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:30,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:46:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:32,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:32,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:46:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:32,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:46:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:32,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:46:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:32,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:32,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:32,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:46:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:32,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 07:46:32,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:32,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 07:46:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 07:46:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 07:46:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:46:32,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:46:32,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552920097] [2023-11-23 07:46:32,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552920097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:46:32,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391412485] [2023-11-23 07:46:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:32,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:32,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:46:32,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:46:32,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 07:46:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:33,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 2549 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 07:46:33,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:46:33,375 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 07:46:33,630 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 07:46:33,631 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:46:33,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391412485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:46:33,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:46:33,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 25 [2023-11-23 07:46:33,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124052398] [2023-11-23 07:46:33,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:46:33,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:46:33,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:46:33,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:46:33,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=525, Unknown=0, NotChecked=0, Total=600 [2023-11-23 07:46:33,634 INFO L87 Difference]: Start difference. First operand 140 states and 196 transitions. Second operand has 12 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 07:46:36,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:46:38,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:46:40,145 WARN L539 Checker$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 07:46:42,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:46:44,329 WARN L539 Checker$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 07:46:44,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:46:44,469 INFO L93 Difference]: Finished difference Result 234 states and 326 transitions. [2023-11-23 07:46:44,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:46:44,470 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 80 [2023-11-23 07:46:44,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:46:44,471 INFO L225 Difference]: With dead ends: 234 [2023-11-23 07:46:44,471 INFO L226 Difference]: Without dead ends: 144 [2023-11-23 07:46:44,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2023-11-23 07:46:44,472 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 114 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 24 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:46:44,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 723 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 312 Invalid, 5 Unknown, 0 Unchecked, 10.8s Time] [2023-11-23 07:46:44,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-23 07:46:44,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2023-11-23 07:46:44,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 92 states have (on average 1.2934782608695652) internal successors, (119), 94 states have internal predecessors, (119), 37 states have call successors, (37), 11 states have call predecessors, (37), 12 states have return successors, (38), 36 states have call predecessors, (38), 36 states have call successors, (38) [2023-11-23 07:46:44,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 194 transitions. [2023-11-23 07:46:44,494 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 194 transitions. Word has length 80 [2023-11-23 07:46:44,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:46:44,495 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 194 transitions. [2023-11-23 07:46:44,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.9) internal successors, (49), 10 states have internal predecessors, (49), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 07:46:44,495 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 194 transitions. [2023-11-23 07:46:44,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-23 07:46:44,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:46:44,497 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:46:44,516 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 07:46:44,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:44,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:46:44,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:46:44,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2028105623, now seen corresponding path program 1 times [2023-11-23 07:46:44,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:46:44,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806574099] [2023-11-23 07:46:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:44,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:46:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:45,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:45,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:46:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:45,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:46:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:45,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:46:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:45,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:45,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:46:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:45,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 07:46:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:45,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:46:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:45,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:46:45,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:45,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 07:46:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 07:46:45,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:46:45,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806574099] [2023-11-23 07:46:45,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806574099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:46:45,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365388847] [2023-11-23 07:46:45,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:45,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:45,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:46:45,332 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 07:46:45,333 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 07:46:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:45,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 2556 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 07:46:45,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:46:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 07:46:45,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:46:45,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365388847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:46:45,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:46:45,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2023-11-23 07:46:45,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418284902] [2023-11-23 07:46:45,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:46:45,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:46:45,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:46:45,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:46:45,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:46:45,758 INFO L87 Difference]: Start difference. First operand 142 states and 194 transitions. Second operand has 9 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:46:45,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:46:45,908 INFO L93 Difference]: Finished difference Result 236 states and 329 transitions. [2023-11-23 07:46:45,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:46:45,909 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 84 [2023-11-23 07:46:45,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:46:45,910 INFO L225 Difference]: With dead ends: 236 [2023-11-23 07:46:45,910 INFO L226 Difference]: Without dead ends: 148 [2023-11-23 07:46:45,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:46:45,911 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 13 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:46:45,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 927 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:46:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-23 07:46:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 146. [2023-11-23 07:46:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 95 states have (on average 1.2842105263157895) internal successors, (122), 98 states have internal predecessors, (122), 37 states have call successors, (37), 11 states have call predecessors, (37), 13 states have return successors, (41), 36 states have call predecessors, (41), 36 states have call successors, (41) [2023-11-23 07:46:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 200 transitions. [2023-11-23 07:46:45,920 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 200 transitions. Word has length 84 [2023-11-23 07:46:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:46:45,921 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 200 transitions. [2023-11-23 07:46:45,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:46:45,921 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 200 transitions. [2023-11-23 07:46:45,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 07:46:45,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:46:45,922 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:46:45,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-23 07:46:46,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:46,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:46:46,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:46:46,135 INFO L85 PathProgramCache]: Analyzing trace with hash 435867698, now seen corresponding path program 1 times [2023-11-23 07:46:46,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:46:46,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773234777] [2023-11-23 07:46:46,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:46,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:46:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:46,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:46,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:46,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:46:46,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:46,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:46:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:46,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:46:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:46,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:46,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:46:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:46,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:46:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:46,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:46:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:46,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:46:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:46,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:46:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:46,375 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-23 07:46:46,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:46:46,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773234777] [2023-11-23 07:46:46,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773234777] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:46:46,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998987906] [2023-11-23 07:46:46,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:46,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:46,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:46:46,377 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 07:46:46,378 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 07:46:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:46,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 2561 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:46:46,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:46:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 07:46:46,772 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:46:46,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998987906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:46:46,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:46:46,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 07:46:46,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715003508] [2023-11-23 07:46:46,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:46:46,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:46:46,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:46:46,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:46:46,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:46:46,774 INFO L87 Difference]: Start difference. First operand 146 states and 200 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:46:46,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:46:46,840 INFO L93 Difference]: Finished difference Result 243 states and 341 transitions. [2023-11-23 07:46:46,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:46:46,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-11-23 07:46:46,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:46:46,843 INFO L225 Difference]: With dead ends: 243 [2023-11-23 07:46:46,843 INFO L226 Difference]: Without dead ends: 151 [2023-11-23 07:46:46,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 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 07:46:46,845 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 9 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:46:46,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 382 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:46:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-23 07:46:46,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 148. [2023-11-23 07:46:46,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 97 states have (on average 1.2783505154639174) internal successors, (124), 100 states have internal predecessors, (124), 37 states have call successors, (37), 11 states have call predecessors, (37), 13 states have return successors, (41), 36 states have call predecessors, (41), 36 states have call successors, (41) [2023-11-23 07:46:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 202 transitions. [2023-11-23 07:46:46,867 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 202 transitions. Word has length 86 [2023-11-23 07:46:46,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:46:46,868 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 202 transitions. [2023-11-23 07:46:46,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:46:46,868 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 202 transitions. [2023-11-23 07:46:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 07:46:46,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:46:46,870 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:46:46,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 07:46:47,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:47,085 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:46:47,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:46:47,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1830513488, now seen corresponding path program 1 times [2023-11-23 07:46:47,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:46:47,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199097038] [2023-11-23 07:46:47,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:47,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:46:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:47,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:47,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:46:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:46:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:46:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:47,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:46:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:47,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:46:47,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:47,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:46:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:47,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:46:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:47,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:46:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-23 07:46:47,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:46:47,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199097038] [2023-11-23 07:46:47,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199097038] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:46:47,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461135827] [2023-11-23 07:46:47,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:47,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:47,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:46:47,682 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 07:46:47,727 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 07:46:48,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:48,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 2566 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:46:48,466 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:46:48,521 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-23 07:46:48,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:46:48,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461135827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:46:48,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:46:48,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-11-23 07:46:48,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467222879] [2023-11-23 07:46:48,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:46:48,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:46:48,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:46:48,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:46:48,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:46:48,523 INFO L87 Difference]: Start difference. First operand 148 states and 202 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:46:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:46:48,801 INFO L93 Difference]: Finished difference Result 257 states and 363 transitions. [2023-11-23 07:46:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:46:48,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-11-23 07:46:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:46:48,802 INFO L225 Difference]: With dead ends: 257 [2023-11-23 07:46:48,802 INFO L226 Difference]: Without dead ends: 163 [2023-11-23 07:46:48,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:46:48,803 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 31 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:46:48,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 484 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:46:48,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2023-11-23 07:46:48,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 153. [2023-11-23 07:46:48,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 105 states have internal predecessors, (131), 37 states have call successors, (37), 11 states have call predecessors, (37), 13 states have return successors, (41), 36 states have call predecessors, (41), 36 states have call successors, (41) [2023-11-23 07:46:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 209 transitions. [2023-11-23 07:46:48,812 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 209 transitions. Word has length 86 [2023-11-23 07:46:48,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:46:48,813 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 209 transitions. [2023-11-23 07:46:48,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:46:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 209 transitions. [2023-11-23 07:46:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 07:46:48,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:46:48,814 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:46:48,846 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 07:46:49,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:49,032 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:46:49,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:46:49,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1789838738, now seen corresponding path program 1 times [2023-11-23 07:46:49,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:46:49,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959182910] [2023-11-23 07:46:49,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:49,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:46:49,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:49,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:49,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:46:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:49,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:46:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:49,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:46:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:49,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:49,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:46:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:49,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:46:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:49,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:46:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:49,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:46:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:49,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:46:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-23 07:46:49,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:46:49,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959182910] [2023-11-23 07:46:49,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959182910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:46:49,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134857835] [2023-11-23 07:46:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:49,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:49,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:46:49,292 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 07:46:49,309 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 07:46:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:49,683 INFO L262 TraceCheckSpWp]: Trace formula consists of 2563 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:46:49,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:46:49,692 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 07:46:49,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:46:49,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134857835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:46:49,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:46:49,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 07:46:49,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876529516] [2023-11-23 07:46:49,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:46:49,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:46:49,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:46:49,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:46:49,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:46:49,696 INFO L87 Difference]: Start difference. First operand 153 states and 209 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:46:49,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:46:49,771 INFO L93 Difference]: Finished difference Result 269 states and 376 transitions. [2023-11-23 07:46:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:46:49,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-11-23 07:46:49,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:46:49,774 INFO L225 Difference]: With dead ends: 269 [2023-11-23 07:46:49,774 INFO L226 Difference]: Without dead ends: 170 [2023-11-23 07:46:49,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 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 07:46:49,776 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 28 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:46:49,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 396 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:46:49,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-23 07:46:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 153. [2023-11-23 07:46:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 102 states have (on average 1.2745098039215685) internal successors, (130), 105 states have internal predecessors, (130), 37 states have call successors, (37), 11 states have call predecessors, (37), 13 states have return successors, (41), 36 states have call predecessors, (41), 36 states have call successors, (41) [2023-11-23 07:46:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 208 transitions. [2023-11-23 07:46:49,787 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 208 transitions. Word has length 86 [2023-11-23 07:46:49,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:46:49,787 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 208 transitions. [2023-11-23 07:46:49,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:46:49,788 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 208 transitions. [2023-11-23 07:46:49,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 07:46:49,789 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:46:49,789 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 07:46:49,824 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 07:46:50,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:50,029 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:46:50,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:46:50,029 INFO L85 PathProgramCache]: Analyzing trace with hash -913819732, now seen corresponding path program 1 times [2023-11-23 07:46:50,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:46:50,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086582964] [2023-11-23 07:46:50,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:50,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:46:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:51,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:51,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:46:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:46:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:51,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:46:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:51,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:46:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:46:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:51,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:46:51,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:51,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:46:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:51,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:46:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:51,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:46:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:46:51,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:46:51,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086582964] [2023-11-23 07:46:51,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086582964] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:46:51,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445478569] [2023-11-23 07:46:51,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:46:51,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:46:51,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:46:52,005 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:46:52,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 07:46:52,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:46:52,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 07:46:52,660 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:46:53,223 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 07:46:53,223 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:46:53,509 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2023-11-23 07:46:53,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2023-11-23 07:46:53,540 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:46:53,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445478569] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:46:53,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:46:53,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 9] total 27 [2023-11-23 07:46:53,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992300923] [2023-11-23 07:46:53,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:46:53,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 07:46:53,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:46:53,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 07:46:53,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=610, Unknown=0, NotChecked=0, Total=702 [2023-11-23 07:46:53,544 INFO L87 Difference]: Start difference. First operand 153 states and 208 transitions. Second operand has 27 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 7 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2023-11-23 07:46:55,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:46:57,823 WARN L539 Checker$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 07:46:59,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:47:01,996 WARN L539 Checker$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 07:47:04,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:47:06,815 WARN L539 Checker$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 07:47:08,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:08,050 INFO L93 Difference]: Finished difference Result 246 states and 309 transitions. [2023-11-23 07:47:08,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-23 07:47:08,051 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 7 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) Word has length 86 [2023-11-23 07:47:08,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:08,052 INFO L225 Difference]: With dead ends: 246 [2023-11-23 07:47:08,053 INFO L226 Difference]: Without dead ends: 192 [2023-11-23 07:47:08,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 172 SyntacticMatches, 8 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 810 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=712, Invalid=2594, Unknown=0, NotChecked=0, Total=3306 [2023-11-23 07:47:08,054 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 332 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 61 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 1902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:08,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 625 Invalid, 1902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1835 Invalid, 6 Unknown, 0 Unchecked, 13.5s Time] [2023-11-23 07:47:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-11-23 07:47:08,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 174. [2023-11-23 07:47:08,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 123 states have (on average 1.2357723577235773) internal successors, (152), 124 states have internal predecessors, (152), 37 states have call successors, (37), 13 states have call predecessors, (37), 13 states have return successors, (38), 36 states have call predecessors, (38), 36 states have call successors, (38) [2023-11-23 07:47:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 227 transitions. [2023-11-23 07:47:08,065 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 227 transitions. Word has length 86 [2023-11-23 07:47:08,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:08,065 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 227 transitions. [2023-11-23 07:47:08,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.461538461538462) internal successors, (116), 26 states have internal predecessors, (116), 7 states have call successors, (25), 4 states have call predecessors, (25), 7 states have return successors, (25), 6 states have call predecessors, (25), 6 states have call successors, (25) [2023-11-23 07:47:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 227 transitions. [2023-11-23 07:47:08,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 07:47:08,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:08,068 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:08,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 07:47:08,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:47:08,285 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:08,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:08,285 INFO L85 PathProgramCache]: Analyzing trace with hash 647897382, now seen corresponding path program 1 times [2023-11-23 07:47:08,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:08,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807498126] [2023-11-23 07:47:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:08,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:47:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:47:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:09,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:47:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:09,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:09,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:47:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:09,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:47:09,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:09,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:47:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:47:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:09,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:47:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:47:10,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:10,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807498126] [2023-11-23 07:47:10,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807498126] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:47:10,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518056557] [2023-11-23 07:47:10,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:10,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:47:10,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:47:10,032 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:47:10,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 07:47:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:10,538 INFO L262 TraceCheckSpWp]: Trace formula consists of 2555 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-23 07:47:10,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:47:11,183 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 07:47:11,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:47:11,681 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-11-23 07:47:11,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 37 [2023-11-23 07:47:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:47:11,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518056557] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:47:11,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:47:11,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 12] total 31 [2023-11-23 07:47:11,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394963002] [2023-11-23 07:47:11,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:47:11,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 07:47:11,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:11,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 07:47:11,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=807, Unknown=0, NotChecked=0, Total=930 [2023-11-23 07:47:11,769 INFO L87 Difference]: Start difference. First operand 174 states and 227 transitions. Second operand has 31 states, 31 states have (on average 3.806451612903226) internal successors, (118), 30 states have internal predecessors, (118), 5 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 07:47:14,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:14,841 INFO L93 Difference]: Finished difference Result 333 states and 435 transitions. [2023-11-23 07:47:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-23 07:47:14,841 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.806451612903226) internal successors, (118), 30 states have internal predecessors, (118), 5 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) Word has length 86 [2023-11-23 07:47:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:14,842 INFO L225 Difference]: With dead ends: 333 [2023-11-23 07:47:14,843 INFO L226 Difference]: Without dead ends: 321 [2023-11-23 07:47:14,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 166 SyntacticMatches, 7 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 977 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=987, Invalid=3435, Unknown=0, NotChecked=0, Total=4422 [2023-11-23 07:47:14,844 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 420 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1931 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 2025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:14,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 823 Invalid, 2025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1931 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 07:47:14,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-23 07:47:14,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 290. [2023-11-23 07:47:14,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 212 states have (on average 1.25) internal successors, (265), 214 states have internal predecessors, (265), 56 states have call successors, (56), 19 states have call predecessors, (56), 21 states have return successors, (63), 56 states have call predecessors, (63), 54 states have call successors, (63) [2023-11-23 07:47:14,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 384 transitions. [2023-11-23 07:47:14,872 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 384 transitions. Word has length 86 [2023-11-23 07:47:14,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:14,872 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 384 transitions. [2023-11-23 07:47:14,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.806451612903226) internal successors, (118), 30 states have internal predecessors, (118), 5 states have call successors, (24), 4 states have call predecessors, (24), 8 states have return successors, (23), 5 states have call predecessors, (23), 4 states have call successors, (23) [2023-11-23 07:47:14,873 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 384 transitions. [2023-11-23 07:47:14,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 07:47:14,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:14,874 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:14,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-23 07:47:15,088 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,SelfDestructingSolverStorable10 [2023-11-23 07:47:15,088 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:15,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:15,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1707907868, now seen corresponding path program 1 times [2023-11-23 07:47:15,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:15,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051048213] [2023-11-23 07:47:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:15,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:16,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:16,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:16,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:47:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:16,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:47:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:16,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:47:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:16,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:16,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:47:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:17,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:47:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:47:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:17,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:47:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:17,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:47:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:17,260 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:47:17,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:17,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051048213] [2023-11-23 07:47:17,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051048213] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:47:17,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407357123] [2023-11-23 07:47:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:17,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:47:17,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:47:17,262 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:47:17,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 07:47:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:18,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 2560 conjuncts, 98 conjunts are in the unsatisfiable core [2023-11-23 07:47:18,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:47:18,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-23 07:47:18,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-23 07:47:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 22 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 07:47:20,448 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:47:21,456 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:47:21,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407357123] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:47:21,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:47:21,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 32, 15] total 57 [2023-11-23 07:47:21,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912530384] [2023-11-23 07:47:21,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:47:21,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-11-23 07:47:21,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:21,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-11-23 07:47:21,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=2889, Unknown=0, NotChecked=0, Total=3192 [2023-11-23 07:47:21,459 INFO L87 Difference]: Start difference. First operand 290 states and 384 transitions. Second operand has 57 states, 51 states have (on average 2.8823529411764706) internal successors, (147), 55 states have internal predecessors, (147), 13 states have call successors, (28), 5 states have call predecessors, (28), 12 states have return successors, (27), 9 states have call predecessors, (27), 12 states have call successors, (27) [2023-11-23 07:47:26,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:26,599 INFO L93 Difference]: Finished difference Result 515 states and 674 transitions. [2023-11-23 07:47:26,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-23 07:47:26,600 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 51 states have (on average 2.8823529411764706) internal successors, (147), 55 states have internal predecessors, (147), 13 states have call successors, (28), 5 states have call predecessors, (28), 12 states have return successors, (27), 9 states have call predecessors, (27), 12 states have call successors, (27) Word has length 86 [2023-11-23 07:47:26,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:26,602 INFO L225 Difference]: With dead ends: 515 [2023-11-23 07:47:26,602 INFO L226 Difference]: Without dead ends: 366 [2023-11-23 07:47:26,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 139 SyntacticMatches, 11 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2763 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1171, Invalid=7759, Unknown=0, NotChecked=0, Total=8930 [2023-11-23 07:47:26,604 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 419 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 3604 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 3724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 3604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:26,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1177 Invalid, 3724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 3604 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-23 07:47:26,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-11-23 07:47:26,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 304. [2023-11-23 07:47:26,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 221 states have (on average 1.2307692307692308) internal successors, (272), 223 states have internal predecessors, (272), 57 states have call successors, (57), 23 states have call predecessors, (57), 25 states have return successors, (64), 57 states have call predecessors, (64), 55 states have call successors, (64) [2023-11-23 07:47:26,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 393 transitions. [2023-11-23 07:47:26,629 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 393 transitions. Word has length 86 [2023-11-23 07:47:26,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:26,629 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 393 transitions. [2023-11-23 07:47:26,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 51 states have (on average 2.8823529411764706) internal successors, (147), 55 states have internal predecessors, (147), 13 states have call successors, (28), 5 states have call predecessors, (28), 12 states have return successors, (27), 9 states have call predecessors, (27), 12 states have call successors, (27) [2023-11-23 07:47:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 393 transitions. [2023-11-23 07:47:26,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 07:47:26,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:26,630 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:26,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-23 07:47:26,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:47:26,831 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:26,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:26,832 INFO L85 PathProgramCache]: Analyzing trace with hash 752274561, now seen corresponding path program 1 times [2023-11-23 07:47:26,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:26,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098685891] [2023-11-23 07:47:26,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:26,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:27,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:27,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:47:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:27,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:47:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:27,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:47:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:27,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:27,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:27,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:47:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:27,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:47:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:27,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:47:27,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:27,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:47:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:27,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:47:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-23 07:47:27,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:27,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098685891] [2023-11-23 07:47:27,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098685891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:27,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:27,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 07:47:27,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698995387] [2023-11-23 07:47:27,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:27,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 07:47:27,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:27,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 07:47:27,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:47:27,371 INFO L87 Difference]: Start difference. First operand 304 states and 393 transitions. Second operand has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:47:27,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:27,783 INFO L93 Difference]: Finished difference Result 316 states and 406 transitions. [2023-11-23 07:47:27,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:47:27,783 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 88 [2023-11-23 07:47:27,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:27,785 INFO L225 Difference]: With dead ends: 316 [2023-11-23 07:47:27,785 INFO L226 Difference]: Without dead ends: 278 [2023-11-23 07:47:27,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:47:27,786 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 95 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:27,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 626 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:47:27,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-23 07:47:27,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 263. [2023-11-23 07:47:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 190 states have (on average 1.236842105263158) internal successors, (235), 192 states have internal predecessors, (235), 49 states have call successors, (49), 22 states have call predecessors, (49), 23 states have return successors, (50), 48 states have call predecessors, (50), 47 states have call successors, (50) [2023-11-23 07:47:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 334 transitions. [2023-11-23 07:47:27,806 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 334 transitions. Word has length 88 [2023-11-23 07:47:27,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:27,806 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 334 transitions. [2023-11-23 07:47:27,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-23 07:47:27,807 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 334 transitions. [2023-11-23 07:47:27,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 07:47:27,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:27,808 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:27,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 07:47:27,808 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:27,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:27,809 INFO L85 PathProgramCache]: Analyzing trace with hash -121832707, now seen corresponding path program 1 times [2023-11-23 07:47:27,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:27,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047909851] [2023-11-23 07:47:27,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:27,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:28,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:28,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:47:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:47:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:47:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:28,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:28,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:28,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 07:47:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:28,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:47:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:28,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 07:47:28,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:28,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 07:47:28,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:28,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:47:28,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:47:29,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:29,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047909851] [2023-11-23 07:47:29,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047909851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:29,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:29,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 07:47:29,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771197515] [2023-11-23 07:47:29,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:29,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 07:47:29,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:29,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 07:47:29,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:47:29,040 INFO L87 Difference]: Start difference. First operand 263 states and 334 transitions. Second operand has 17 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 07:47:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:29,748 INFO L93 Difference]: Finished difference Result 281 states and 352 transitions. [2023-11-23 07:47:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 07:47:29,748 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 88 [2023-11-23 07:47:29,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:29,749 INFO L225 Difference]: With dead ends: 281 [2023-11-23 07:47:29,749 INFO L226 Difference]: Without dead ends: 233 [2023-11-23 07:47:29,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-11-23 07:47:29,750 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 140 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 1098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:29,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 706 Invalid, 1098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:47:29,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-23 07:47:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 142. [2023-11-23 07:47:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 100 states have (on average 1.2) internal successors, (120), 101 states have internal predecessors, (120), 25 states have call successors, (25), 16 states have call predecessors, (25), 16 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-23 07:47:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 169 transitions. [2023-11-23 07:47:29,761 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 169 transitions. Word has length 88 [2023-11-23 07:47:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:29,762 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 169 transitions. [2023-11-23 07:47:29,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-23 07:47:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 169 transitions. [2023-11-23 07:47:29,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 07:47:29,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:29,763 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:29,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 07:47:29,763 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:29,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:29,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1544663944, now seen corresponding path program 1 times [2023-11-23 07:47:29,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:29,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526656250] [2023-11-23 07:47:29,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:29,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:47:30,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:47:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:47:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:47:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:47:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:47:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 07:47:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 07:47:30,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:30,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526656250] [2023-11-23 07:47:30,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526656250] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:47:30,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222514143] [2023-11-23 07:47:30,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:30,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:47:30,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:47:30,398 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:47:30,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 07:47:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:30,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 07:47:30,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:47:31,018 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 07:47:31,019 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:47:31,332 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 07:47:31,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222514143] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:47:31,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:47:31,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 31 [2023-11-23 07:47:31,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777383922] [2023-11-23 07:47:31,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:47:31,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 07:47:31,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:31,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 07:47:31,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=859, Unknown=0, NotChecked=0, Total=930 [2023-11-23 07:47:31,338 INFO L87 Difference]: Start difference. First operand 142 states and 169 transitions. Second operand has 31 states, 25 states have (on average 3.92) internal successors, (98), 23 states have internal predecessors, (98), 9 states have call successors, (36), 4 states have call predecessors, (36), 8 states have return successors, (37), 15 states have call predecessors, (37), 9 states have call successors, (37) [2023-11-23 07:47:32,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:32,877 INFO L93 Difference]: Finished difference Result 166 states and 197 transitions. [2023-11-23 07:47:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:47:32,878 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 25 states have (on average 3.92) internal successors, (98), 23 states have internal predecessors, (98), 9 states have call successors, (36), 4 states have call predecessors, (36), 8 states have return successors, (37), 15 states have call predecessors, (37), 9 states have call successors, (37) Word has length 107 [2023-11-23 07:47:32,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:32,879 INFO L225 Difference]: With dead ends: 166 [2023-11-23 07:47:32,879 INFO L226 Difference]: Without dead ends: 147 [2023-11-23 07:47:32,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=153, Invalid=1653, Unknown=0, NotChecked=0, Total=1806 [2023-11-23 07:47:32,880 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 132 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 1959 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:32,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1068 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1959 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 07:47:32,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-23 07:47:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2023-11-23 07:47:32,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 105 states have internal predecessors, (123), 25 states have call successors, (25), 16 states have call predecessors, (25), 17 states have return successors, (25), 24 states have call predecessors, (25), 24 states have call successors, (25) [2023-11-23 07:47:32,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2023-11-23 07:47:32,898 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 107 [2023-11-23 07:47:32,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:32,905 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2023-11-23 07:47:32,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 25 states have (on average 3.92) internal successors, (98), 23 states have internal predecessors, (98), 9 states have call successors, (36), 4 states have call predecessors, (36), 8 states have return successors, (37), 15 states have call predecessors, (37), 9 states have call successors, (37) [2023-11-23 07:47:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2023-11-23 07:47:32,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 07:47:32,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:32,909 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:32,924 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 07:47:33,112 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,SelfDestructingSolverStorable14 [2023-11-23 07:47:33,113 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:33,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:33,113 INFO L85 PathProgramCache]: Analyzing trace with hash 675257700, now seen corresponding path program 1 times [2023-11-23 07:47:33,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:33,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330545998] [2023-11-23 07:47:33,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:33,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:33,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:33,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:47:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:47:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:33,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:47:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:47:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:47:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:47:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-23 07:47:33,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:33,692 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2023-11-23 07:47:33,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:33,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330545998] [2023-11-23 07:47:33,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330545998] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:47:33,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231286999] [2023-11-23 07:47:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:33,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:47:33,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:47:33,694 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 07:47:33,708 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 07:47:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:34,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 2726 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 07:47:34,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:47:34,256 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 07:47:34,256 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:47:34,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231286999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:34,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:47:34,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-11-23 07:47:34,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5862451] [2023-11-23 07:47:34,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:34,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:47:34,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:34,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:47:34,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:47:34,257 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 07:47:34,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:34,390 INFO L93 Difference]: Finished difference Result 198 states and 238 transitions. [2023-11-23 07:47:34,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:47:34,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 108 [2023-11-23 07:47:34,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:34,391 INFO L225 Difference]: With dead ends: 198 [2023-11-23 07:47:34,391 INFO L226 Difference]: Without dead ends: 156 [2023-11-23 07:47:34,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:47:34,392 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 8 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:34,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 560 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:47:34,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-23 07:47:34,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2023-11-23 07:47:34,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 109 states have (on average 1.18348623853211) internal successors, (129), 111 states have internal predecessors, (129), 28 states have call successors, (28), 16 states have call predecessors, (28), 17 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2023-11-23 07:47:34,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2023-11-23 07:47:34,404 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 108 [2023-11-23 07:47:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:34,405 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2023-11-23 07:47:34,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 07:47:34,405 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2023-11-23 07:47:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 07:47:34,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:34,406 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:34,421 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 07:47:34,620 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,SelfDestructingSolverStorable15 [2023-11-23 07:47:34,620 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:34,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:34,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1096399154, now seen corresponding path program 1 times [2023-11-23 07:47:34,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:34,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122442165] [2023-11-23 07:47:34,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:34,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:34,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:47:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:47:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:47:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:47:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:47:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 07:47:35,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 07:47:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:47:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 07:47:35,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:35,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122442165] [2023-11-23 07:47:35,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122442165] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:47:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380558587] [2023-11-23 07:47:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:35,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:47:35,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:47:35,244 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 07:47:35,284 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 07:47:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:35,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 07:47:35,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:47:35,844 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 07:47:35,844 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:47:35,996 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 07:47:35,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380558587] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:47:35,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:47:35,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 22 [2023-11-23 07:47:35,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921245648] [2023-11-23 07:47:35,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:47:35,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 07:47:35,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:36,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 07:47:36,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2023-11-23 07:47:36,001 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand has 22 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 7 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 11 states have call predecessors, (28), 7 states have call successors, (28) [2023-11-23 07:47:36,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:36,825 INFO L93 Difference]: Finished difference Result 205 states and 242 transitions. [2023-11-23 07:47:36,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:47:36,826 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 7 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 11 states have call predecessors, (28), 7 states have call successors, (28) Word has length 114 [2023-11-23 07:47:36,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:36,827 INFO L225 Difference]: With dead ends: 205 [2023-11-23 07:47:36,827 INFO L226 Difference]: Without dead ends: 146 [2023-11-23 07:47:36,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=783, Unknown=0, NotChecked=0, Total=870 [2023-11-23 07:47:36,828 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 151 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1480 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:36,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 844 Invalid, 1547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:47:36,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-23 07:47:36,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2023-11-23 07:47:36,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 105 states have internal predecessors, (122), 25 states have call successors, (25), 16 states have call predecessors, (25), 17 states have return successors, (25), 24 states have call predecessors, (25), 24 states have call successors, (25) [2023-11-23 07:47:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2023-11-23 07:47:36,840 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 114 [2023-11-23 07:47:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:36,842 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2023-11-23 07:47:36,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 4.722222222222222) internal successors, (85), 16 states have internal predecessors, (85), 7 states have call successors, (29), 4 states have call predecessors, (29), 6 states have return successors, (28), 11 states have call predecessors, (28), 7 states have call successors, (28) [2023-11-23 07:47:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2023-11-23 07:47:36,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 07:47:36,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:36,843 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:36,874 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 07:47:37,057 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,SelfDestructingSolverStorable16 [2023-11-23 07:47:37,058 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:37,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:37,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1579548893, now seen corresponding path program 1 times [2023-11-23 07:47:37,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:37,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608874832] [2023-11-23 07:47:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:37,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:37,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:47:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:47:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:47:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:47:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:47:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:47:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:47:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:47:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 07:47:37,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:37,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608874832] [2023-11-23 07:47:37,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608874832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:47:37,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574745153] [2023-11-23 07:47:37,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:37,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:47:37,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:47:37,829 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 07:47:37,904 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 07:47:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:38,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-23 07:47:38,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:47:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 46 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-23 07:47:38,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:47:38,858 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 07:47:38,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574745153] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:47:38,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:47:38,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 37 [2023-11-23 07:47:38,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008600696] [2023-11-23 07:47:38,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:47:38,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-23 07:47:38,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:38,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-23 07:47:38,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1224, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 07:47:38,861 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand has 37 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 29 states have internal predecessors, (101), 11 states have call successors, (36), 4 states have call predecessors, (36), 10 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) [2023-11-23 07:47:40,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:40,147 INFO L93 Difference]: Finished difference Result 218 states and 261 transitions. [2023-11-23 07:47:40,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:47:40,148 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 29 states have internal predecessors, (101), 11 states have call successors, (36), 4 states have call predecessors, (36), 10 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) Word has length 116 [2023-11-23 07:47:40,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:40,149 INFO L225 Difference]: With dead ends: 218 [2023-11-23 07:47:40,149 INFO L226 Difference]: Without dead ends: 145 [2023-11-23 07:47:40,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=170, Invalid=1636, Unknown=0, NotChecked=0, Total=1806 [2023-11-23 07:47:40,150 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 211 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:40,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 929 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 07:47:40,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-11-23 07:47:40,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2023-11-23 07:47:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 102 states have (on average 1.1764705882352942) internal successors, (120), 103 states have internal predecessors, (120), 25 states have call successors, (25), 16 states have call predecessors, (25), 16 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-23 07:47:40,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2023-11-23 07:47:40,162 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 116 [2023-11-23 07:47:40,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:40,164 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2023-11-23 07:47:40,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 31 states have (on average 3.2580645161290325) internal successors, (101), 29 states have internal predecessors, (101), 11 states have call successors, (36), 4 states have call predecessors, (36), 10 states have return successors, (37), 14 states have call predecessors, (37), 11 states have call successors, (37) [2023-11-23 07:47:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2023-11-23 07:47:40,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2023-11-23 07:47:40,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:40,165 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:40,196 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 07:47:40,381 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 07:47:40,382 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:40,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:40,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1304789279, now seen corresponding path program 1 times [2023-11-23 07:47:40,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:40,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792285569] [2023-11-23 07:47:40,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:40,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:40,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:40,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:40,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:47:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:47:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:47:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:47:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:47:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:47:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:47:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 07:47:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:40,796 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-23 07:47:40,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:40,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792285569] [2023-11-23 07:47:40,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792285569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:40,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:40,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:47:40,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783657554] [2023-11-23 07:47:40,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:40,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:47:40,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:40,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:47:40,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:47:40,799 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 07:47:41,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:41,107 INFO L93 Difference]: Finished difference Result 165 states and 192 transitions. [2023-11-23 07:47:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:47:41,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 116 [2023-11-23 07:47:41,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:41,108 INFO L225 Difference]: With dead ends: 165 [2023-11-23 07:47:41,108 INFO L226 Difference]: Without dead ends: 144 [2023-11-23 07:47:41,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:47:41,109 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 56 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:41,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 223 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:47:41,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-23 07:47:41,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-11-23 07:47:41,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 103 states have internal predecessors, (119), 25 states have call successors, (25), 16 states have call predecessors, (25), 16 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-23 07:47:41,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 168 transitions. [2023-11-23 07:47:41,121 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 168 transitions. Word has length 116 [2023-11-23 07:47:41,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:41,121 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 168 transitions. [2023-11-23 07:47:41,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 07:47:41,121 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 168 transitions. [2023-11-23 07:47:41,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-23 07:47:41,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:41,122 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:41,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 07:47:41,123 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:41,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:41,123 INFO L85 PathProgramCache]: Analyzing trace with hash -101057049, now seen corresponding path program 1 times [2023-11-23 07:47:41,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:41,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408201712] [2023-11-23 07:47:41,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:41,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:41,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:47:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:47:41,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:47:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:47:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:47:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:47:41,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:47:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 07:47:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:47:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:47:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-23 07:47:41,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:41,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408201712] [2023-11-23 07:47:41,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408201712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:41,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:41,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 07:47:41,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268556431] [2023-11-23 07:47:41,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:41,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:47:41,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:41,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:47:41,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:47:41,488 INFO L87 Difference]: Start difference. First operand 144 states and 168 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 07:47:41,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:41,791 INFO L93 Difference]: Finished difference Result 184 states and 215 transitions. [2023-11-23 07:47:41,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:47:41,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 132 [2023-11-23 07:47:41,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:41,792 INFO L225 Difference]: With dead ends: 184 [2023-11-23 07:47:41,792 INFO L226 Difference]: Without dead ends: 144 [2023-11-23 07:47:41,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:47:41,793 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 56 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:41,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 156 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:47:41,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-23 07:47:41,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-11-23 07:47:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 102 states have (on average 1.1568627450980393) internal successors, (118), 103 states have internal predecessors, (118), 25 states have call successors, (25), 16 states have call predecessors, (25), 16 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-23 07:47:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 167 transitions. [2023-11-23 07:47:41,824 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 167 transitions. Word has length 132 [2023-11-23 07:47:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:41,825 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 167 transitions. [2023-11-23 07:47:41,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (20), 4 states have call predecessors, (20), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-23 07:47:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 167 transitions. [2023-11-23 07:47:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-23 07:47:41,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:41,826 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:41,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 07:47:41,827 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:41,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:41,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1212933359, now seen corresponding path program 1 times [2023-11-23 07:47:41,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:41,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251470622] [2023-11-23 07:47:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:41,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:47:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:47:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:42,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:47:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:47:42,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:47:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:47:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:47:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-23 07:47:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 07:47:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:47:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 07:47:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:42,343 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 07:47:42,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:42,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251470622] [2023-11-23 07:47:42,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251470622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:42,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:42,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 07:47:42,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057340482] [2023-11-23 07:47:42,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:42,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:47:42,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:42,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:47:42,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:47:42,345 INFO L87 Difference]: Start difference. First operand 144 states and 167 transitions. Second operand has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 07:47:42,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:42,783 INFO L93 Difference]: Finished difference Result 187 states and 217 transitions. [2023-11-23 07:47:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:47:42,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 138 [2023-11-23 07:47:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:42,784 INFO L225 Difference]: With dead ends: 187 [2023-11-23 07:47:42,784 INFO L226 Difference]: Without dead ends: 144 [2023-11-23 07:47:42,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:47:42,785 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 136 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:42,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 178 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:47:42,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-23 07:47:42,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-11-23 07:47:42,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 102 states have (on average 1.1470588235294117) internal successors, (117), 103 states have internal predecessors, (117), 25 states have call successors, (25), 16 states have call predecessors, (25), 16 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-23 07:47:42,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 166 transitions. [2023-11-23 07:47:42,797 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 166 transitions. Word has length 138 [2023-11-23 07:47:42,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:42,798 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 166 transitions. [2023-11-23 07:47:42,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 07:47:42,798 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 166 transitions. [2023-11-23 07:47:42,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-11-23 07:47:42,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:42,799 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:42,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 07:47:42,799 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:42,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:42,800 INFO L85 PathProgramCache]: Analyzing trace with hash 791051174, now seen corresponding path program 1 times [2023-11-23 07:47:42,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:42,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348378242] [2023-11-23 07:47:42,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:42,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:43,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:47:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:47:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:47:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:47:43,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:47:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:47:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:47:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:47:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 07:47:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:47:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 07:47:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:43,272 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 07:47:43,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:43,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348378242] [2023-11-23 07:47:43,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348378242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:43,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:43,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 07:47:43,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463667820] [2023-11-23 07:47:43,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:43,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:47:43,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:43,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:47:43,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:47:43,274 INFO L87 Difference]: Start difference. First operand 144 states and 166 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 07:47:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:43,726 INFO L93 Difference]: Finished difference Result 168 states and 192 transitions. [2023-11-23 07:47:43,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 07:47:43,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 144 [2023-11-23 07:47:43,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:43,727 INFO L225 Difference]: With dead ends: 168 [2023-11-23 07:47:43,727 INFO L226 Difference]: Without dead ends: 144 [2023-11-23 07:47:43,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 07:47:43,728 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 56 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:43,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 309 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:47:43,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-23 07:47:43,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-11-23 07:47:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 102 states have (on average 1.1274509803921569) internal successors, (115), 103 states have internal predecessors, (115), 25 states have call successors, (25), 16 states have call predecessors, (25), 16 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-23 07:47:43,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 164 transitions. [2023-11-23 07:47:43,740 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 164 transitions. Word has length 144 [2023-11-23 07:47:43,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:43,741 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 164 transitions. [2023-11-23 07:47:43,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 07:47:43,741 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 164 transitions. [2023-11-23 07:47:43,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-23 07:47:43,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:43,742 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:43,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 07:47:43,742 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:43,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:43,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1642290707, now seen corresponding path program 1 times [2023-11-23 07:47:43,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:43,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183926678] [2023-11-23 07:47:43,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:43,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:44,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:45,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:45,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:45,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:47:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:47:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:47:45,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:47:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:47:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:47:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:47:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 07:47:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 07:47:45,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:45,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:47:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 07:47:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:45,603 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2023-11-23 07:47:45,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:45,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183926678] [2023-11-23 07:47:45,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183926678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:45,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:47:45,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-23 07:47:45,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528819835] [2023-11-23 07:47:45,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:45,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 07:47:45,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:45,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 07:47:45,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 07:47:45,606 INFO L87 Difference]: Start difference. First operand 144 states and 164 transitions. Second operand has 16 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 7 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-11-23 07:47:46,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:46,657 INFO L93 Difference]: Finished difference Result 188 states and 213 transitions. [2023-11-23 07:47:46,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:47:46,658 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 7 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) Word has length 146 [2023-11-23 07:47:46,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:46,658 INFO L225 Difference]: With dead ends: 188 [2023-11-23 07:47:46,658 INFO L226 Difference]: Without dead ends: 144 [2023-11-23 07:47:46,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2023-11-23 07:47:46,659 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 114 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:46,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 374 Invalid, 940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 07:47:46,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-23 07:47:46,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2023-11-23 07:47:46,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 102 states have (on average 1.107843137254902) internal successors, (113), 103 states have internal predecessors, (113), 25 states have call successors, (25), 16 states have call predecessors, (25), 16 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-23 07:47:46,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 162 transitions. [2023-11-23 07:47:46,671 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 162 transitions. Word has length 146 [2023-11-23 07:47:46,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:46,671 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 162 transitions. [2023-11-23 07:47:46,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 7 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 7 states have call predecessors, (20), 7 states have call successors, (20) [2023-11-23 07:47:46,671 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 162 transitions. [2023-11-23 07:47:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 07:47:46,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:46,672 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:46,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 07:47:46,673 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:46,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash 559292365, now seen corresponding path program 1 times [2023-11-23 07:47:46,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:46,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888178061] [2023-11-23 07:47:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:46,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:47,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:47:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:47:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:47:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:47:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:47:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:47:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:47:47,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 07:47:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 07:47:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:47:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 07:47:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-23 07:47:47,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:47,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888178061] [2023-11-23 07:47:47,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888178061] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:47:47,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816780943] [2023-11-23 07:47:47,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:47,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:47:47,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:47:47,592 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 07:47:47,616 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 07:47:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:48,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 2865 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-23 07:47:48,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:47:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2023-11-23 07:47:48,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:47:48,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816780943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:47:48,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:47:48,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 14 [2023-11-23 07:47:48,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570908242] [2023-11-23 07:47:48,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:47:48,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:47:48,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:47:48,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:47:48,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:47:48,143 INFO L87 Difference]: Start difference. First operand 144 states and 162 transitions. Second operand has 10 states, 8 states have (on average 9.875) internal successors, (79), 9 states have internal predecessors, (79), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 07:47:48,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:47:48,355 INFO L93 Difference]: Finished difference Result 189 states and 212 transitions. [2023-11-23 07:47:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:47:48,355 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.875) internal successors, (79), 9 states have internal predecessors, (79), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 150 [2023-11-23 07:47:48,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:47:48,357 INFO L225 Difference]: With dead ends: 189 [2023-11-23 07:47:48,357 INFO L226 Difference]: Without dead ends: 137 [2023-11-23 07:47:48,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-23 07:47:48,365 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 14 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:47:48,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 896 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:47:48,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-23 07:47:48,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2023-11-23 07:47:48,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 95 states have (on average 1.0842105263157895) internal successors, (103), 96 states have internal predecessors, (103), 25 states have call successors, (25), 16 states have call predecessors, (25), 16 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-23 07:47:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2023-11-23 07:47:48,381 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 150 [2023-11-23 07:47:48,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:47:48,382 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2023-11-23 07:47:48,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.875) internal successors, (79), 9 states have internal predecessors, (79), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-11-23 07:47:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2023-11-23 07:47:48,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-23 07:47:48,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:47:48,384 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:47:48,414 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 07:47:48,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:47:48,600 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:47:48,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:47:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1410042142, now seen corresponding path program 1 times [2023-11-23 07:47:48,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:47:48,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279696305] [2023-11-23 07:47:48,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:48,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:47:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:47:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:47:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:47:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:47:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:47:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:47:52,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:47:52,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:47:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:47:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:47:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:47:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:47:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:47:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:47:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:47:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:52,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 07:47:52,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:53,129 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-23 07:47:53,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:47:53,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279696305] [2023-11-23 07:47:53,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279696305] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:47:53,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133390222] [2023-11-23 07:47:53,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:47:53,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:47:53,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:47:53,131 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 07:47:53,133 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 07:47:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:47:53,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 2867 conjuncts, 105 conjunts are in the unsatisfiable core [2023-11-23 07:47:53,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:47:53,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2023-11-23 07:47:53,868 INFO L349 Elim1Store]: treesize reduction 32, result has 45.8 percent of original size [2023-11-23 07:47:53,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 96 [2023-11-23 07:47:53,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:47:53,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:47:53,908 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 07:47:53,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 11 [2023-11-23 07:48:10,531 INFO L349 Elim1Store]: treesize reduction 133, result has 48.2 percent of original size [2023-11-23 07:48:10,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 11 new quantified variables, introduced 21 case distinctions, treesize of input 202 treesize of output 237 [2023-11-23 07:48:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 49 proven. 24 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2023-11-23 07:48:10,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:48:14,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133390222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:48:14,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:48:14,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31] total 59 [2023-11-23 07:48:14,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494852527] [2023-11-23 07:48:14,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:48:14,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-11-23 07:48:14,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:48:14,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-11-23 07:48:14,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=5101, Unknown=6, NotChecked=0, Total=5402 [2023-11-23 07:48:14,601 INFO L87 Difference]: Start difference. First operand 137 states and 152 transitions. Second operand has 59 states, 48 states have (on average 2.8125) internal successors, (135), 48 states have internal predecessors, (135), 21 states have call successors, (40), 6 states have call predecessors, (40), 12 states have return successors, (39), 22 states have call predecessors, (39), 20 states have call successors, (39) [2023-11-23 07:48:22,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:48:26,942 WARN L539 Checker$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 07:48:31,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:48:31,244 INFO L93 Difference]: Finished difference Result 180 states and 198 transitions. [2023-11-23 07:48:31,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-23 07:48:31,245 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 48 states have (on average 2.8125) internal successors, (135), 48 states have internal predecessors, (135), 21 states have call successors, (40), 6 states have call predecessors, (40), 12 states have return successors, (39), 22 states have call predecessors, (39), 20 states have call successors, (39) Word has length 152 [2023-11-23 07:48:31,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:48:31,246 INFO L225 Difference]: With dead ends: 180 [2023-11-23 07:48:31,246 INFO L226 Difference]: Without dead ends: 178 [2023-11-23 07:48:31,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 165 SyntacticMatches, 10 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3075 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=824, Invalid=12510, Unknown=6, NotChecked=0, Total=13340 [2023-11-23 07:48:31,248 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 230 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 3858 mSolverCounterSat, 117 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 3976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3858 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:48:31,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 1133 Invalid, 3976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 3858 Invalid, 1 Unknown, 0 Unchecked, 9.5s Time] [2023-11-23 07:48:31,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-23 07:48:31,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 164. [2023-11-23 07:48:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 115 states have (on average 1.0956521739130434) internal successors, (126), 118 states have internal predecessors, (126), 27 states have call successors, (27), 19 states have call predecessors, (27), 21 states have return successors, (28), 26 states have call predecessors, (28), 26 states have call successors, (28) [2023-11-23 07:48:31,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 181 transitions. [2023-11-23 07:48:31,268 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 181 transitions. Word has length 152 [2023-11-23 07:48:31,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:48:31,268 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 181 transitions. [2023-11-23 07:48:31,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 48 states have (on average 2.8125) internal successors, (135), 48 states have internal predecessors, (135), 21 states have call successors, (40), 6 states have call predecessors, (40), 12 states have return successors, (39), 22 states have call predecessors, (39), 20 states have call successors, (39) [2023-11-23 07:48:31,269 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 181 transitions. [2023-11-23 07:48:31,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-23 07:48:31,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:48:31,269 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:48:31,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-23 07:48:31,487 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 07:48:31,487 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:48:31,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:48:31,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1045023590, now seen corresponding path program 1 times [2023-11-23 07:48:31,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:48:31,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405427241] [2023-11-23 07:48:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:48:31,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:48:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:31,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:31,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:48:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:48:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:48:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:48:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:48:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:48:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:48:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:48:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:48:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:48:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:48:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:48:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:48:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:48:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:48:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 07:48:32,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,244 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 07:48:32,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:48:32,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405427241] [2023-11-23 07:48:32,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405427241] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:48:32,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034742524] [2023-11-23 07:48:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:48:32,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:48:32,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:48:32,246 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 07:48:32,247 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 07:48:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:32,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 2859 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 07:48:32,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:48:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 07:48:32,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:48:32,960 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2023-11-23 07:48:32,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034742524] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:48:32,960 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:48:32,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 15 [2023-11-23 07:48:32,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323136190] [2023-11-23 07:48:32,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:48:32,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 07:48:32,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:48:32,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 07:48:32,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:48:32,962 INFO L87 Difference]: Start difference. First operand 164 states and 181 transitions. Second operand has 15 states, 13 states have (on average 6.230769230769231) internal successors, (81), 11 states have internal predecessors, (81), 5 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 07:48:33,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:48:33,726 INFO L93 Difference]: Finished difference Result 183 states and 201 transitions. [2023-11-23 07:48:33,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 07:48:33,726 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.230769230769231) internal successors, (81), 11 states have internal predecessors, (81), 5 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) Word has length 152 [2023-11-23 07:48:33,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:48:33,727 INFO L225 Difference]: With dead ends: 183 [2023-11-23 07:48:33,727 INFO L226 Difference]: Without dead ends: 162 [2023-11-23 07:48:33,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-11-23 07:48:33,728 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 59 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:48:33,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 516 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:48:33,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-23 07:48:33,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-23 07:48:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 113 states have (on average 1.079646017699115) internal successors, (122), 116 states have internal predecessors, (122), 27 states have call successors, (27), 19 states have call predecessors, (27), 21 states have return successors, (28), 26 states have call predecessors, (28), 26 states have call successors, (28) [2023-11-23 07:48:33,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 177 transitions. [2023-11-23 07:48:33,752 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 177 transitions. Word has length 152 [2023-11-23 07:48:33,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:48:33,752 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 177 transitions. [2023-11-23 07:48:33,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.230769230769231) internal successors, (81), 11 states have internal predecessors, (81), 5 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (25), 7 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-23 07:48:33,752 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 177 transitions. [2023-11-23 07:48:33,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 07:48:33,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:48:33,753 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:48:33,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-23 07:48:33,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-23 07:48:33,987 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:48:33,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:48:33,988 INFO L85 PathProgramCache]: Analyzing trace with hash 467289218, now seen corresponding path program 1 times [2023-11-23 07:48:33,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:48:33,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128409504] [2023-11-23 07:48:33,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:48:33,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:48:34,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:48:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:48:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:48:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:35,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:48:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:48:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:48:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:48:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:48:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:48:35,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:48:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:48:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:48:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:48:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:48:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:48:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 07:48:35,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 07:48:35,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:48:35,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128409504] [2023-11-23 07:48:35,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128409504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:48:35,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:48:35,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 07:48:35,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856854435] [2023-11-23 07:48:35,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:48:35,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 07:48:35,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:48:35,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 07:48:35,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:48:35,401 INFO L87 Difference]: Start difference. First operand 162 states and 177 transitions. Second operand has 13 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-23 07:48:36,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:48:36,510 INFO L93 Difference]: Finished difference Result 204 states and 223 transitions. [2023-11-23 07:48:36,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:48:36,511 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 154 [2023-11-23 07:48:36,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:48:36,513 INFO L225 Difference]: With dead ends: 204 [2023-11-23 07:48:36,513 INFO L226 Difference]: Without dead ends: 180 [2023-11-23 07:48:36,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-11-23 07:48:36,514 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 74 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:48:36,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 521 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:48:36,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-23 07:48:36,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 173. [2023-11-23 07:48:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 121 states have (on average 1.0743801652892562) internal successors, (130), 125 states have internal predecessors, (130), 29 states have call successors, (29), 19 states have call predecessors, (29), 22 states have return successors, (31), 28 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-23 07:48:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 190 transitions. [2023-11-23 07:48:36,536 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 190 transitions. Word has length 154 [2023-11-23 07:48:36,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:48:36,536 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 190 transitions. [2023-11-23 07:48:36,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 5 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-23 07:48:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 190 transitions. [2023-11-23 07:48:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 07:48:36,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:48:36,538 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:48:36,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-23 07:48:36,539 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:48:36,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:48:36,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1888516032, now seen corresponding path program 1 times [2023-11-23 07:48:36,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:48:36,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738401326] [2023-11-23 07:48:36,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:48:36,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:48:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:48:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:48:38,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:48:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:48:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:48:38,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:48:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:48:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:38,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:48:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:48:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:48:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:48:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:48:38,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:48:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:48:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:48:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 07:48:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2023-11-23 07:48:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:38,915 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 07:48:38,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:48:38,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738401326] [2023-11-23 07:48:38,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738401326] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:48:38,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409808824] [2023-11-23 07:48:38,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:48:38,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:48:38,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:48:38,917 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:48:38,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 07:48:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:48:39,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 101 conjunts are in the unsatisfiable core [2023-11-23 07:48:39,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:48:39,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 49 [2023-11-23 07:48:39,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:48:39,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2023-11-23 07:48:39,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2023-11-23 07:48:39,517 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2023-11-23 07:48:39,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 19 [2023-11-23 07:48:50,345 INFO L349 Elim1Store]: treesize reduction 141, result has 75.0 percent of original size [2023-11-23 07:48:50,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 45 case distinctions, treesize of input 241 treesize of output 562 [2023-11-23 07:48:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 70 proven. 1 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2023-11-23 07:48:50,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:48:56,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409808824] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:48:56,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:48:56,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27] total 42 [2023-11-23 07:48:56,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809888300] [2023-11-23 07:48:56,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:48:56,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-23 07:48:56,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:48:56,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-23 07:48:56,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=3198, Unknown=1, NotChecked=0, Total=3422 [2023-11-23 07:48:56,800 INFO L87 Difference]: Start difference. First operand 173 states and 190 transitions. Second operand has 42 states, 36 states have (on average 3.888888888888889) internal successors, (140), 34 states have internal predecessors, (140), 15 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2023-11-23 07:49:18,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:49:18,379 INFO L93 Difference]: Finished difference Result 283 states and 316 transitions. [2023-11-23 07:49:18,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-23 07:49:18,380 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 36 states have (on average 3.888888888888889) internal successors, (140), 34 states have internal predecessors, (140), 15 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) Word has length 154 [2023-11-23 07:49:18,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:49:18,381 INFO L225 Difference]: With dead ends: 283 [2023-11-23 07:49:18,381 INFO L226 Difference]: Without dead ends: 251 [2023-11-23 07:49:18,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 162 SyntacticMatches, 18 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2007 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=650, Invalid=7905, Unknown=1, NotChecked=0, Total=8556 [2023-11-23 07:49:18,383 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 296 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 4563 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 4671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 4563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:49:18,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1184 Invalid, 4671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 4563 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2023-11-23 07:49:18,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-23 07:49:18,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 228. [2023-11-23 07:49:18,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 164 states have (on average 1.0670731707317074) internal successors, (175), 169 states have internal predecessors, (175), 36 states have call successors, (36), 23 states have call predecessors, (36), 27 states have return successors, (41), 35 states have call predecessors, (41), 34 states have call successors, (41) [2023-11-23 07:49:18,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 252 transitions. [2023-11-23 07:49:18,427 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 252 transitions. Word has length 154 [2023-11-23 07:49:18,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:49:18,428 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 252 transitions. [2023-11-23 07:49:18,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 36 states have (on average 3.888888888888889) internal successors, (140), 34 states have internal predecessors, (140), 15 states have call successors, (38), 7 states have call predecessors, (38), 7 states have return successors, (35), 14 states have call predecessors, (35), 14 states have call successors, (35) [2023-11-23 07:49:18,428 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 252 transitions. [2023-11-23 07:49:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-23 07:49:18,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:49:18,429 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:49:18,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 07:49:18,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-23 07:49:18,645 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:49:18,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:49:18,646 INFO L85 PathProgramCache]: Analyzing trace with hash -555351966, now seen corresponding path program 1 times [2023-11-23 07:49:18,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:49:18,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316459366] [2023-11-23 07:49:18,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:49:18,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:49:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:49:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:49:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:49:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:49:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:49:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:49:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:49:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 07:49:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 07:49:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 07:49:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:49:32,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:49:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:49:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 07:49:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:32,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 07:49:32,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:33,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 07:49:33,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:33,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 07:49:33,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:33,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 07:49:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 07:49:33,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-11-23 07:49:33,390 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: has to be unsat by construction, we do check only for interpolant computation at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:387) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:229) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-23 07:49:33,409 INFO L158 Benchmark]: Toolchain (without parser) took 191052.73ms. Allocated memory was 155.2MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 88.6MB in the beginning and 1.0GB in the end (delta: -934.5MB). Peak memory consumption was 96.2MB. Max. memory is 16.1GB. [2023-11-23 07:49:33,410 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 07:49:33,410 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2120.02ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 88.1MB in the beginning and 118.0MB in the end (delta: -29.9MB). Peak memory consumption was 113.1MB. Max. memory is 16.1GB. [2023-11-23 07:49:33,410 INFO L158 Benchmark]: Boogie Procedure Inliner took 110.86ms. Allocated memory is still 209.7MB. Free memory was 118.0MB in the beginning and 106.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 07:49:33,411 INFO L158 Benchmark]: Boogie Preprocessor took 159.43ms. Allocated memory is still 209.7MB. Free memory was 106.5MB in the beginning and 89.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 07:49:33,411 INFO L158 Benchmark]: RCFGBuilder took 1264.15ms. Allocated memory is still 209.7MB. Free memory was 89.7MB in the beginning and 76.5MB in the end (delta: 13.1MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. [2023-11-23 07:49:33,411 INFO L158 Benchmark]: TraceAbstraction took 187392.51ms. Allocated memory was 209.7MB in the beginning and 1.2GB in the end (delta: 977.3MB). Free memory was 75.5MB in the beginning and 1.0GB in the end (delta: -947.5MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2023-11-23 07:49:33,418 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 155.2MB. Free memory is still 115.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2120.02ms. Allocated memory was 155.2MB in the beginning and 209.7MB in the end (delta: 54.5MB). Free memory was 88.1MB in the beginning and 118.0MB in the end (delta: -29.9MB). Peak memory consumption was 113.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 110.86ms. Allocated memory is still 209.7MB. Free memory was 118.0MB in the beginning and 106.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 159.43ms. Allocated memory is still 209.7MB. Free memory was 106.5MB in the beginning and 89.7MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 1264.15ms. Allocated memory is still 209.7MB. Free memory was 89.7MB in the beginning and 76.5MB in the end (delta: 13.1MB). Peak memory consumption was 41.5MB. Max. memory is 16.1GB. * TraceAbstraction took 187392.51ms. Allocated memory was 209.7MB in the beginning and 1.2GB in the end (delta: 977.3MB). Free memory was 75.5MB in the beginning and 1.0GB in the end (delta: -947.5MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 8253]: Unsoundness Warning Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] - GenericResultAtLocation [Line: 8739]: Unsoundness Warning Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: has to be unsat by construction, we do check only for interpolant computation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: has to be unsat by construction, we do check only for interpolant computation: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:387) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-11-23 07:49:33,637 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-11-23 07:49:33,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.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 c6f394469998c48e6ef18c3b42ee2a3474a6570f40012cad15c840d16c47e9d4 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:49:35,526 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:49:35,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-23 07:49:35,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:49:35,597 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:49:35,615 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:49:35,616 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:49:35,616 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:49:35,617 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:49:35,617 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:49:35,617 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:49:35,617 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:49:35,618 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:49:35,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:49:35,622 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:49:35,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:49:35,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:49:35,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:49:35,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:49:35,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:49:35,623 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:49:35,623 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 07:49:35,623 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 07:49:35,624 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 07:49:35,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:49:35,624 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:49:35,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:49:35,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:49:35,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:49:35,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:49:35,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:49:35,626 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:49:35,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:49:35,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:49:35,627 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-23 07:49:35,627 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 07:49:35,627 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:49:35,628 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:49:35,628 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:49:35,628 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:49:35,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:49:35,628 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-23 07:49:35,628 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6f394469998c48e6ef18c3b42ee2a3474a6570f40012cad15c840d16c47e9d4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:49:35,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:49:35,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:49:35,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:49:35,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:49:35,920 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:49:35,921 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i [2023-11-23 07:49:37,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:49:37,370 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:49:37,372 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i [2023-11-23 07:49:37,402 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c99da5190/275b4d323a2149f5b034ab150da5effd/FLAG4379e6dce [2023-11-23 07:49:37,416 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c99da5190/275b4d323a2149f5b034ab150da5effd [2023-11-23 07:49:37,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:49:37,419 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:49:37,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:49:37,421 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:49:37,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:49:37,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:49:37" (1/1) ... [2023-11-23 07:49:37,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29d76495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:37, skipping insertion in model container [2023-11-23 07:49:37,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:49:37" (1/1) ... [2023-11-23 07:49:37,551 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:49:37,749 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i[4508,4521] [2023-11-23 07:49:37,756 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i[4568,4581] [2023-11-23 07:49:38,341 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:38,342 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:38,342 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:38,343 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:38,343 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:38,351 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:38,352 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:38,357 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:38,357 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:38,595 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:49:38,596 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:49:38,596 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:49:38,597 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:49:38,598 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:49:38,599 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:49:38,599 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:49:38,599 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:49:38,600 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:49:38,600 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:49:38,809 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:38,816 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:38,902 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:49:38,963 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-23 07:49:39,005 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:49:39,010 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i[4508,4521] [2023-11-23 07:49:39,010 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i[4568,4581] [2023-11-23 07:49:39,051 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,052 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,052 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,052 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,053 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,059 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,060 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,061 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,061 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,094 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:49:39,095 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:49:39,095 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:49:39,096 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:49:39,096 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:49:39,097 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:49:39,098 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:49:39,098 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:49:39,098 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:49:39,099 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:49:39,190 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,191 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:49:39,259 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:49:39,273 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i[4508,4521] [2023-11-23 07:49:39,274 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_eq_byte_buf_ignore_case_harness.i[4568,4581] [2023-11-23 07:49:39,301 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,301 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,301 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,301 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,302 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,304 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,305 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,306 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,321 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:49:39,322 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:49:39,322 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:49:39,323 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:49:39,323 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:49:39,324 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:49:39,324 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:49:39,324 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:49:39,325 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:49:39,325 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:49:39,392 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8253] [2023-11-23 07:49:39,394 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,394 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:49:39,404 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8739-8750] [2023-11-23 07:49:39,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:49:39,611 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,611 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,611 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,611 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,611 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,612 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,612 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,612 WARN L675 CHandler]: The function s_global_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,612 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,612 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,612 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,612 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,612 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,613 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,613 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,613 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,613 WARN L675 CHandler]: The function tl_thread_handler is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,613 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,613 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,614 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:49:39,619 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:49:39,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39 WrapperNode [2023-11-23 07:49:39,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:49:39,620 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:49:39,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:49:39,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:49:39,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (1/1) ... [2023-11-23 07:49:39,718 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (1/1) ... [2023-11-23 07:49:39,800 INFO L138 Inliner]: procedures = 712, calls = 2789, calls flagged for inlining = 60, calls inlined = 7, statements flattened = 847 [2023-11-23 07:49:39,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:49:39,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:49:39,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:49:39,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:49:39,811 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (1/1) ... [2023-11-23 07:49:39,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (1/1) ... [2023-11-23 07:49:39,821 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (1/1) ... [2023-11-23 07:49:39,897 INFO L188 MemorySlicer]: Split 531 memory accesses to 7 slices as follows [2, 15, 258, 236, 2, 15, 3]. 49 percent of accesses are in the largest equivalence class. The 502 initializations are split as follows [2, 0, 256, 236, 0, 5, 3]. The 7 writes are split as follows [0, 2, 0, 0, 2, 3, 0]. [2023-11-23 07:49:39,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (1/1) ... [2023-11-23 07:49:39,898 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (1/1) ... [2023-11-23 07:49:39,930 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (1/1) ... [2023-11-23 07:49:39,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (1/1) ... [2023-11-23 07:49:39,943 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (1/1) ... [2023-11-23 07:49:39,948 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (1/1) ... [2023-11-23 07:49:39,961 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:49:39,961 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:49:39,962 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:49:39,962 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:49:39,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (1/1) ... [2023-11-23 07:49:39,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:49:39,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:49:39,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 07:49:40,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 07:49:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-23 07:49:40,055 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-23 07:49:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 07:49:40,055 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 07:49:40,055 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq_ignore_case [2023-11-23 07:49:40,055 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq_ignore_case [2023-11-23 07:49:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-23 07:49:40,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-23 07:49:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:49:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:49:40,056 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:49:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-23 07:49:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-23 07:49:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-23 07:49:40,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-23 07:49:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-23 07:49:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2023-11-23 07:49:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#6 [2023-11-23 07:49:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-11-23 07:49:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-11-23 07:49:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-11-23 07:49:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-11-23 07:49:40,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-11-23 07:49:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2023-11-23 07:49:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#6 [2023-11-23 07:49:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:49:40,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:49:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:49:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:49:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:49:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:49:40,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:49:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:49:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:49:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:49:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:49:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:49:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:49:40,059 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:49:40,059 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:49:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-23 07:49:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-23 07:49:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-23 07:49:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-23 07:49:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-11-23 07:49:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#5 [2023-11-23 07:49:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#6 [2023-11-23 07:49:40,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#0 [2023-11-23 07:49:40,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#1 [2023-11-23 07:49:40,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#2 [2023-11-23 07:49:40,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#3 [2023-11-23 07:49:40,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#4 [2023-11-23 07:49:40,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#5 [2023-11-23 07:49:40,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8#6 [2023-11-23 07:49:40,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-23 07:49:40,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-23 07:49:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-23 07:49:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-23 07:49:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-23 07:49:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-23 07:49:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-23 07:49:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:49:40,062 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:49:40,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:49:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:49:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:49:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:49:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:49:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:49:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 07:49:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 07:49:40,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#0 [2023-11-23 07:49:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#1 [2023-11-23 07:49:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#2 [2023-11-23 07:49:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#3 [2023-11-23 07:49:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#4 [2023-11-23 07:49:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#5 [2023-11-23 07:49:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8#6 [2023-11-23 07:49:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-11-23 07:49:40,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-11-23 07:49:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-11-23 07:49:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-11-23 07:49:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-11-23 07:49:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2023-11-23 07:49:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#6 [2023-11-23 07:49:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:49:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:49:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:49:40,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:49:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:49:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:49:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:49:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 07:49:40,066 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 07:49:40,066 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 07:49:40,066 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 07:49:40,372 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:49:40,374 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:49:41,690 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:49:41,842 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:49:41,843 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 07:49:41,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:49:41 BoogieIcfgContainer [2023-11-23 07:49:41,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:49:41,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:49:41,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:49:41,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:49:41,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:49:37" (1/3) ... [2023-11-23 07:49:41,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34478142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:49:41, skipping insertion in model container [2023-11-23 07:49:41,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:49:39" (2/3) ... [2023-11-23 07:49:41,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34478142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:49:41, skipping insertion in model container [2023-11-23 07:49:41,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:49:41" (3/3) ... [2023-11-23 07:49:41,849 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_eq_byte_buf_ignore_case_harness.i [2023-11-23 07:49:41,861 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:49:41,861 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:49:41,902 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:49:41,907 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;@3c6cfa96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:49:41,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:49:41,912 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 71 states have internal predecessors, (95), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-23 07:49:41,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 07:49:41,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:49:41,924 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 07:49:41,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:49:41,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:49:41,929 INFO L85 PathProgramCache]: Analyzing trace with hash -217893765, now seen corresponding path program 1 times [2023-11-23 07:49:41,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:49:41,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661089753] [2023-11-23 07:49:41,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:49:41,941 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:49:41,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:49:41,943 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:49:41,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 07:49:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:42,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 07:49:42,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:49:42,694 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-23 07:49:42,695 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:49:42,695 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:49:42,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661089753] [2023-11-23 07:49:42,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661089753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:49:42,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:49:42,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 07:49:42,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233168566] [2023-11-23 07:49:42,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:49:42,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 07:49:42,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:49:42,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 07:49:42,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:49:42,736 INFO L87 Difference]: Start difference. First operand has 108 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 71 states have internal predecessors, (95), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:49:43,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:49:43,204 INFO L93 Difference]: Finished difference Result 206 states and 295 transitions. [2023-11-23 07:49:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 07:49:43,209 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 64 [2023-11-23 07:49:43,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:49:43,218 INFO L225 Difference]: With dead ends: 206 [2023-11-23 07:49:43,218 INFO L226 Difference]: Without dead ends: 106 [2023-11-23 07:49:43,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 07:49:43,225 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:49:43,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 132 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:49:43,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-23 07:49:43,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-11-23 07:49:43,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 69 states have (on average 1.318840579710145) internal successors, (91), 70 states have internal predecessors, (91), 26 states have call successors, (26), 10 states have call predecessors, (26), 10 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-23 07:49:43,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 142 transitions. [2023-11-23 07:49:43,258 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 142 transitions. Word has length 64 [2023-11-23 07:49:43,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:49:43,259 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 142 transitions. [2023-11-23 07:49:43,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:49:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 142 transitions. [2023-11-23 07:49:43,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 07:49:43,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:49:43,262 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 07:49:43,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-23 07:49:43,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:49:43,478 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:49:43,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:49:43,478 INFO L85 PathProgramCache]: Analyzing trace with hash 416480569, now seen corresponding path program 1 times [2023-11-23 07:49:43,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:49:43,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551521657] [2023-11-23 07:49:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:49:43,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:49:43,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:49:43,490 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:49:43,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 07:49:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:44,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 07:49:44,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:49:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 07:49:44,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:49:44,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:49:44,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551521657] [2023-11-23 07:49:44,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551521657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:49:44,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:49:44,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:49:44,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229177686] [2023-11-23 07:49:44,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:49:44,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:49:44,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:49:44,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:49:44,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:49:44,306 INFO L87 Difference]: Start difference. First operand 106 states and 142 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:49:44,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:49:44,906 INFO L93 Difference]: Finished difference Result 175 states and 238 transitions. [2023-11-23 07:49:44,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:49:44,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 64 [2023-11-23 07:49:44,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:49:44,910 INFO L225 Difference]: With dead ends: 175 [2023-11-23 07:49:44,910 INFO L226 Difference]: Without dead ends: 108 [2023-11-23 07:49:44,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:49:44,911 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 41 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 07:49:44,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 333 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 07:49:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-23 07:49:44,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-23 07:49:44,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 72 states have internal predecessors, (92), 26 states have call successors, (26), 10 states have call predecessors, (26), 11 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-23 07:49:44,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 144 transitions. [2023-11-23 07:49:44,923 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 144 transitions. Word has length 64 [2023-11-23 07:49:44,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:49:44,923 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 144 transitions. [2023-11-23 07:49:44,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:49:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 144 transitions. [2023-11-23 07:49:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-23 07:49:44,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:49:44,926 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:49:44,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:49:45,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:49:45,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:49:45,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:49:45,141 INFO L85 PathProgramCache]: Analyzing trace with hash -545207504, now seen corresponding path program 1 times [2023-11-23 07:49:45,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:49:45,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338317506] [2023-11-23 07:49:45,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:49:45,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:49:45,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:49:45,152 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:49:45,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 07:49:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:45,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 1453 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 07:49:45,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:49:46,015 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 07:49:46,442 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 07:49:46,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:49:46,442 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:49:46,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338317506] [2023-11-23 07:49:46,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338317506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:49:46,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:49:46,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 07:49:46,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519748517] [2023-11-23 07:49:46,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:49:46,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:49:46,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:49:46,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:49:46,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:49:46,444 INFO L87 Difference]: Start difference. First operand 108 states and 144 transitions. Second operand has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 07:49:48,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:49:51,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:49:53,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:49:56,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:49:56,925 INFO L93 Difference]: Finished difference Result 184 states and 246 transitions. [2023-11-23 07:49:56,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:49:56,926 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 72 [2023-11-23 07:49:56,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:49:56,927 INFO L225 Difference]: With dead ends: 184 [2023-11-23 07:49:56,928 INFO L226 Difference]: Without dead ends: 115 [2023-11-23 07:49:56,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:49:56,929 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 114 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 25 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:49:56,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 682 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 308 Invalid, 3 Unknown, 0 Unchecked, 10.3s Time] [2023-11-23 07:49:56,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-23 07:49:56,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2023-11-23 07:49:56,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 76 states have internal predecessors, (96), 26 states have call successors, (26), 11 states have call predecessors, (26), 12 states have return successors, (26), 25 states have call predecessors, (26), 25 states have call successors, (26) [2023-11-23 07:49:56,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 148 transitions. [2023-11-23 07:49:56,941 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 148 transitions. Word has length 72 [2023-11-23 07:49:56,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:49:56,941 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 148 transitions. [2023-11-23 07:49:56,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 07:49:56,942 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 148 transitions. [2023-11-23 07:49:56,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 07:49:56,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:49:56,944 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:49:56,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:49:57,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:49:57,164 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:49:57,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:49:57,165 INFO L85 PathProgramCache]: Analyzing trace with hash -674573078, now seen corresponding path program 1 times [2023-11-23 07:49:57,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:49:57,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279936514] [2023-11-23 07:49:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:49:57,167 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:49:57,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:49:57,168 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:49:57,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-23 07:49:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:49:57,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 1459 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 07:49:57,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:49:58,638 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 07:49:58,638 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:49:58,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:49:58,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279936514] [2023-11-23 07:49:58,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279936514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:49:58,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:49:58,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 07:49:58,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217582354] [2023-11-23 07:49:58,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:49:58,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:49:58,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:49:58,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:49:58,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:49:58,640 INFO L87 Difference]: Start difference. First operand 113 states and 148 transitions. Second operand has 12 states, 10 states have (on average 4.8) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:50:01,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:50:04,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:50:10,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:50:10,395 INFO L93 Difference]: Finished difference Result 199 states and 269 transitions. [2023-11-23 07:50:10,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 07:50:10,398 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 4.8) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 76 [2023-11-23 07:50:10,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:50:10,399 INFO L225 Difference]: With dead ends: 199 [2023-11-23 07:50:10,399 INFO L226 Difference]: Without dead ends: 128 [2023-11-23 07:50:10,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:50:10,400 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 38 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:50:10,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1219 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 472 Invalid, 2 Unknown, 0 Unchecked, 11.1s Time] [2023-11-23 07:50:10,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-23 07:50:10,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2023-11-23 07:50:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.2857142857142858) internal successors, (108), 87 states have internal predecessors, (108), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2023-11-23 07:50:10,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 162 transitions. [2023-11-23 07:50:10,411 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 162 transitions. Word has length 76 [2023-11-23 07:50:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:50:10,412 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 162 transitions. [2023-11-23 07:50:10,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 4.8) internal successors, (48), 11 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:50:10,412 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 162 transitions. [2023-11-23 07:50:10,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 07:50:10,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:50:10,414 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:50:10,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-23 07:50:10,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:50:10,632 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:50:10,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:50:10,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1253699624, now seen corresponding path program 1 times [2023-11-23 07:50:10,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:50:10,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853859985] [2023-11-23 07:50:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:50:10,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:50:10,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:50:10,637 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:50:10,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 07:50:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:50:11,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:50:11,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:50:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 07:50:11,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:50:11,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:50:11,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853859985] [2023-11-23 07:50:11,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853859985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:50:11,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:50:11,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:50:11,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487459655] [2023-11-23 07:50:11,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:50:11,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:50:11,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:50:11,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:50:11,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:50:11,309 INFO L87 Difference]: Start difference. First operand 124 states and 162 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:50:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:50:12,061 INFO L93 Difference]: Finished difference Result 217 states and 288 transitions. [2023-11-23 07:50:12,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:50:12,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 76 [2023-11-23 07:50:12,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:50:12,062 INFO L225 Difference]: With dead ends: 217 [2023-11-23 07:50:12,063 INFO L226 Difference]: Without dead ends: 136 [2023-11-23 07:50:12,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:50:12,063 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 28 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:50:12,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 396 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 07:50:12,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-23 07:50:12,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 124. [2023-11-23 07:50:12,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 87 states have internal predecessors, (107), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2023-11-23 07:50:12,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 161 transitions. [2023-11-23 07:50:12,075 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 161 transitions. Word has length 76 [2023-11-23 07:50:12,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:50:12,075 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 161 transitions. [2023-11-23 07:50:12,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:50:12,075 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 161 transitions. [2023-11-23 07:50:12,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 07:50:12,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:50:12,077 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:50:12,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-23 07:50:12,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:50:12,295 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:50:12,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:50:12,295 INFO L85 PathProgramCache]: Analyzing trace with hash -795688218, now seen corresponding path program 1 times [2023-11-23 07:50:12,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:50:12,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278277434] [2023-11-23 07:50:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:50:12,297 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:50:12,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:50:12,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:50:12,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 07:50:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:50:12,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 07:50:12,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:50:13,144 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 07:50:13,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:50:13,145 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:50:13,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278277434] [2023-11-23 07:50:13,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278277434] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:50:13,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:50:13,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 07:50:13,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851832161] [2023-11-23 07:50:13,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:50:13,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 07:50:13,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:50:13,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 07:50:13,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:50:13,146 INFO L87 Difference]: Start difference. First operand 124 states and 161 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:50:14,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:50:14,932 INFO L93 Difference]: Finished difference Result 208 states and 275 transitions. [2023-11-23 07:50:14,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:50:14,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 76 [2023-11-23 07:50:14,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:50:14,935 INFO L225 Difference]: With dead ends: 208 [2023-11-23 07:50:14,935 INFO L226 Difference]: Without dead ends: 127 [2023-11-23 07:50:14,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:50:14,936 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 27 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:50:14,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 490 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 07:50:14,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-23 07:50:14,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 124. [2023-11-23 07:50:14,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 87 states have internal predecessors, (106), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2023-11-23 07:50:14,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 160 transitions. [2023-11-23 07:50:14,945 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 160 transitions. Word has length 76 [2023-11-23 07:50:14,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:50:14,945 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 160 transitions. [2023-11-23 07:50:14,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-23 07:50:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 160 transitions. [2023-11-23 07:50:14,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 07:50:14,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:50:14,949 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:50:14,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 07:50:15,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:50:15,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:50:15,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:50:15,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1219334940, now seen corresponding path program 1 times [2023-11-23 07:50:15,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:50:15,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1170570154] [2023-11-23 07:50:15,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:50:15,168 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:50:15,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:50:15,169 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:50:15,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-23 07:50:15,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:50:15,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:50:15,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:50:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 07:50:15,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:50:15,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:50:15,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1170570154] [2023-11-23 07:50:15,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1170570154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:50:15,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:50:15,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 07:50:15,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217863601] [2023-11-23 07:50:15,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:50:15,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 07:50:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:50:15,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 07:50:15,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 07:50:15,852 INFO L87 Difference]: Start difference. First operand 124 states and 160 transitions. Second operand has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:50:17,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:50:17,556 INFO L93 Difference]: Finished difference Result 211 states and 275 transitions. [2023-11-23 07:50:17,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:50:17,557 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 76 [2023-11-23 07:50:17,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:50:17,558 INFO L225 Difference]: With dead ends: 211 [2023-11-23 07:50:17,558 INFO L226 Difference]: Without dead ends: 130 [2023-11-23 07:50:17,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:50:17,559 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 13 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-23 07:50:17,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 927 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-23 07:50:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-23 07:50:17,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2023-11-23 07:50:17,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 87 states have internal predecessors, (106), 26 states have call successors, (26), 11 states have call predecessors, (26), 13 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2023-11-23 07:50:17,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 160 transitions. [2023-11-23 07:50:17,572 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 160 transitions. Word has length 76 [2023-11-23 07:50:17,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:50:17,573 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 160 transitions. [2023-11-23 07:50:17,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 3 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:50:17,573 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 160 transitions. [2023-11-23 07:50:17,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-23 07:50:17,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:50:17,577 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 07:50:17,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-23 07:50:17,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:50:17,778 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:50:17,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:50:17,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1798274561, now seen corresponding path program 1 times [2023-11-23 07:50:17,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:50:17,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1673041608] [2023-11-23 07:50:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:50:17,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:50:17,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:50:17,781 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:50:17,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-23 07:50:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:50:18,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 1461 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 07:50:18,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:50:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 07:50:18,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:50:18,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-23 07:50:18,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1673041608] [2023-11-23 07:50:18,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1673041608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:50:18,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 07:50:18,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 07:50:18,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225755898] [2023-11-23 07:50:18,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:50:18,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:50:18,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-23 07:50:18,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:50:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:50:18,585 INFO L87 Difference]: Start difference. First operand 124 states and 160 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:50:19,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:50:19,119 INFO L93 Difference]: Finished difference Result 205 states and 272 transitions. [2023-11-23 07:50:19,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 07:50:19,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 78 [2023-11-23 07:50:19,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:50:19,123 INFO L225 Difference]: With dead ends: 205 [2023-11-23 07:50:19,123 INFO L226 Difference]: Without dead ends: 155 [2023-11-23 07:50:19,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 07:50:19,123 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 11 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 07:50:19,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 383 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 07:50:19,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-23 07:50:19,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2023-11-23 07:50:19,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 102 states have (on average 1.2647058823529411) internal successors, (129), 105 states have internal predecessors, (129), 37 states have call successors, (37), 11 states have call predecessors, (37), 13 states have return successors, (41), 36 states have call predecessors, (41), 36 states have call successors, (41) [2023-11-23 07:50:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 207 transitions. [2023-11-23 07:50:19,132 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 207 transitions. Word has length 78 [2023-11-23 07:50:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:50:19,148 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 207 transitions. [2023-11-23 07:50:19,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 07:50:19,149 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 207 transitions. [2023-11-23 07:50:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-23 07:50:19,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:50:19,150 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2023-11-23 07:50:19,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-23 07:50:19,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:50:19,354 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:50:19,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:50:19,355 INFO L85 PathProgramCache]: Analyzing trace with hash -913819732, now seen corresponding path program 1 times [2023-11-23 07:50:19,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-23 07:50:19,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438782791] [2023-11-23 07:50:19,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:50:19,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 07:50:19,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-11-23 07:50:19,358 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 07:50:19,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-23 07:50:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:50:20,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 1475 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 07:50:20,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:50:21,347 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 27 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 07:50:21,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... Killed by 15