./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.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 cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:21:08,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:21:08,354 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:21:08,357 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:21:08,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:21:08,391 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:21:08,391 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:21:08,392 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:21:08,393 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:21:08,395 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:21:08,396 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:21:08,405 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:21:08,406 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:21:08,408 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:21:08,408 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:21:08,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:21:08,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:21:08,409 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:21:08,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:21:08,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:21:08,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:21:08,409 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:21:08,410 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:21:08,410 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:21:08,410 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:21:08,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:21:08,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:21:08,411 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:21:08,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:21:08,411 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:21:08,412 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:21:08,412 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:21:08,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:21:08,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:21:08,413 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:21:08,413 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:21:08,413 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:21:08,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:21:08,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:21:08,414 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:21:08,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:21:08,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:21:08,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:21:08,667 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:21:08,668 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:21:08,669 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2023-11-23 08:21:09,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:21:10,166 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:21:10,167 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2023-11-23 08:21:10,201 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e40622d/a285a1ad2b764125bd5622146a556a3c/FLAG113e45cdb [2023-11-23 08:21:10,213 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93e40622d/a285a1ad2b764125bd5622146a556a3c [2023-11-23 08:21:10,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:21:10,216 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:21:10,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:21:10,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:21:10,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:21:10,223 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:21:10" (1/1) ... [2023-11-23 08:21:10,224 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76dd7491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:10, skipping insertion in model container [2023-11-23 08:21:10,224 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:21:10" (1/1) ... [2023-11-23 08:21:10,308 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:21:10,478 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2023-11-23 08:21:10,485 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2023-11-23 08:21:11,030 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,034 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,036 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,037 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,037 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,057 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,060 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,062 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,065 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,309 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:21:11,310 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:21:11,311 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:21:11,311 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:21:11,313 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:21:11,317 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:21:11,318 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:21:11,318 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:21:11,319 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:21:11,319 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:21:11,485 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,486 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,525 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:21:11,556 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:21:11,566 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4510,4523] [2023-11-23 08:21:11,567 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i[4570,4583] [2023-11-23 08:21:11,591 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,595 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,599 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,600 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,601 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,604 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,605 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,622 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:21:11,623 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:21:11,623 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:21:11,623 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:21:11,624 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:21:11,624 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:21:11,625 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:21:11,625 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:21:11,625 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:21:11,626 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:21:11,676 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2023-11-23 08:21:11,678 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,679 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:21:11,686 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2023-11-23 08:21:11,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:21:11,896 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,896 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,896 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,896 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,897 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,897 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,897 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,897 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,897 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,897 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,898 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,898 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,898 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,899 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,899 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,899 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,899 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,899 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:21:11,906 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:21:11,906 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11 WrapperNode [2023-11-23 08:21:11,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:21:11,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:21:11,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:21:11,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:21:11,913 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:11,993 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:12,053 INFO L138 Inliner]: procedures = 690, calls = 2671, calls flagged for inlining = 58, calls inlined = 5, statements flattened = 899 [2023-11-23 08:21:12,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:21:12,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:21:12,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:21:12,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:21:12,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:12,062 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:12,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:12,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:12,106 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:12,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:12,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:12,171 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:12,180 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:21:12,185 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:21:12,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:21:12,186 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:21:12,187 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11" (1/1) ... [2023-11-23 08:21:12,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:21:12,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:12,243 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 08:21:12,274 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 08:21:12,302 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 08:21:12,303 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 08:21:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:21:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:21:12,304 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:21:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:21:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:21:12,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:21:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:21:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:21:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2023-11-23 08:21:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2023-11-23 08:21:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:21:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 08:21:12,305 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 08:21:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 08:21:12,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2023-11-23 08:21:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:21:12,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:21:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:21:12,306 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:21:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:21:12,306 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:21:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-23 08:21:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-23 08:21:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:21:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:21:12,307 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 08:21:12,307 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 08:21:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:21:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:21:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2023-11-23 08:21:12,308 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2023-11-23 08:21:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:21:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:21:12,308 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:21:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 08:21:12,309 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 08:21:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2023-11-23 08:21:12,309 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2023-11-23 08:21:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:21:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2023-11-23 08:21:12,310 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2023-11-23 08:21:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:21:12,539 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:21:12,541 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:21:13,270 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:21:13,363 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:21:13,363 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 08:21:13,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:21:13 BoogieIcfgContainer [2023-11-23 08:21:13,364 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:21:13,365 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:21:13,365 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:21:13,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:21:13,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:21:10" (1/3) ... [2023-11-23 08:21:13,370 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4edf86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:21:13, skipping insertion in model container [2023-11-23 08:21:13,370 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:21:11" (2/3) ... [2023-11-23 08:21:13,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4edf86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:21:13, skipping insertion in model container [2023-11-23 08:21:13,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:21:13" (3/3) ... [2023-11-23 08:21:13,372 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2023-11-23 08:21:13,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:21:13,387 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:21:13,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:21:13,445 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;@32946764, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:21:13,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:21:13,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 97 states have internal predecessors, (118), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2023-11-23 08:21:13,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-23 08:21:13,464 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:13,465 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:13,466 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:13,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:13,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1345328970, now seen corresponding path program 1 times [2023-11-23 08:21:13,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:13,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917381306] [2023-11-23 08:21:13,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:13,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:21:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:21:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:21:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:21:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:21:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:21:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:14,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:21:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:21:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:21:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:21:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:21:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:21:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:21:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:21:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:21:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:21:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 08:21:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:21:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:21:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 08:21:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 08:21:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-23 08:21:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 08:21:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-23 08:21:14,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:14,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917381306] [2023-11-23 08:21:14,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917381306] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:14,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:21:14,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:21:14,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569683803] [2023-11-23 08:21:14,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:14,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:21:14,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:14,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:21:14,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:21:14,408 INFO L87 Difference]: Start difference. First operand has 171 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 97 states have internal predecessors, (118), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-23 08:21:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:14,892 INFO L93 Difference]: Finished difference Result 341 states and 503 transitions. [2023-11-23 08:21:14,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:21:14,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 157 [2023-11-23 08:21:14,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:14,905 INFO L225 Difference]: With dead ends: 341 [2023-11-23 08:21:14,905 INFO L226 Difference]: Without dead ends: 179 [2023-11-23 08:21:14,912 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 08:21:14,915 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 248 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:14,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 148 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:21:14,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-11-23 08:21:14,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 169. [2023-11-23 08:21:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 94 states have (on average 1.2127659574468086) internal successors, (114), 96 states have internal predecessors, (114), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-23 08:21:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 229 transitions. [2023-11-23 08:21:14,985 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 229 transitions. Word has length 157 [2023-11-23 08:21:14,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:14,985 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 229 transitions. [2023-11-23 08:21:14,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-23 08:21:14,986 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 229 transitions. [2023-11-23 08:21:14,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-23 08:21:14,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:14,994 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:14,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:21:14,994 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:14,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:14,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1352491126, now seen corresponding path program 1 times [2023-11-23 08:21:14,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:14,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108681322] [2023-11-23 08:21:14,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:14,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:21:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:21:15,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:21:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:21:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:21:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:21:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:15,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:15,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:21:15,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:21:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:21:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 08:21:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:21:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:15,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 08:21:15,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 08:21:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:21:15,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:21:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:21:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-23 08:21:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:21:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:21:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-23 08:21:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 08:21:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-23 08:21:15,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-23 08:21:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:15,928 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-23 08:21:15,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:15,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108681322] [2023-11-23 08:21:15,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108681322] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:15,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158880066] [2023-11-23 08:21:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:15,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:15,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:15,931 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 08:21:15,933 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 08:21:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:16,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 2984 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:21:16,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:16,638 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-11-23 08:21:16,639 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:16,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158880066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:16,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:16,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 08:21:16,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134509278] [2023-11-23 08:21:16,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:16,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:21:16,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:16,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:21:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:21:16,642 INFO L87 Difference]: Start difference. First operand 169 states and 229 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 08:21:16,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:16,794 INFO L93 Difference]: Finished difference Result 326 states and 446 transitions. [2023-11-23 08:21:16,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:21:16,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 157 [2023-11-23 08:21:16,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:16,796 INFO L225 Difference]: With dead ends: 326 [2023-11-23 08:21:16,796 INFO L226 Difference]: Without dead ends: 171 [2023-11-23 08:21:16,797 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:21:16,798 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 43 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:16,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 534 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:21:16,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-23 08:21:16,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-11-23 08:21:16,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 98 states have internal predecessors, (115), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (64), 57 states have call predecessors, (64), 57 states have call successors, (64) [2023-11-23 08:21:16,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 237 transitions. [2023-11-23 08:21:16,810 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 237 transitions. Word has length 157 [2023-11-23 08:21:16,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:16,810 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 237 transitions. [2023-11-23 08:21:16,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 08:21:16,811 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 237 transitions. [2023-11-23 08:21:16,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-23 08:21:16,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:16,812 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:16,831 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 08:21:17,025 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 08:21:17,025 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:17,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:17,026 INFO L85 PathProgramCache]: Analyzing trace with hash -953567041, now seen corresponding path program 1 times [2023-11-23 08:21:17,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:17,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336439040] [2023-11-23 08:21:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:17,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:17,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:21:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:21:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:21:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:21:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:21:17,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:21:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:21:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:21:17,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:21:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:21:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:21:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:17,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:21:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-23 08:21:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:21:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:21:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:21:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-23 08:21:17,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:21:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:21:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-23 08:21:17,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-11-23 08:21:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-23 08:21:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-23 08:21:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-23 08:21:17,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336439040] [2023-11-23 08:21:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336439040] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:17,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996572729] [2023-11-23 08:21:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:17,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:17,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:17,516 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 08:21:17,559 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 08:21:17,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:18,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 3001 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:21:18,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 135 proven. 8 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-23 08:21:18,083 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:21:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2023-11-23 08:21:18,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996572729] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:21:18,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:21:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2023-11-23 08:21:18,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790496490] [2023-11-23 08:21:18,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:21:18,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 08:21:18,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:18,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 08:21:18,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:21:18,215 INFO L87 Difference]: Start difference. First operand 171 states and 237 transitions. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 11 states have internal predecessors, (81), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) [2023-11-23 08:21:19,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:19,110 INFO L93 Difference]: Finished difference Result 312 states and 432 transitions. [2023-11-23 08:21:19,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:21:19,110 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 11 states have internal predecessors, (81), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) Word has length 163 [2023-11-23 08:21:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:19,112 INFO L225 Difference]: With dead ends: 312 [2023-11-23 08:21:19,112 INFO L226 Difference]: Without dead ends: 181 [2023-11-23 08:21:19,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 378 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:21:19,113 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 470 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:19,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 346 Invalid, 1472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:21:19,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-23 08:21:19,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2023-11-23 08:21:19,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 98 states have internal predecessors, (115), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (62), 57 states have call predecessors, (62), 57 states have call successors, (62) [2023-11-23 08:21:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 235 transitions. [2023-11-23 08:21:19,125 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 235 transitions. Word has length 163 [2023-11-23 08:21:19,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:19,126 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 235 transitions. [2023-11-23 08:21:19,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 11 states have internal predecessors, (81), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) [2023-11-23 08:21:19,126 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 235 transitions. [2023-11-23 08:21:19,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2023-11-23 08:21:19,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:19,127 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:19,145 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 08:21:19,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 08:21:19,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:19,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:19,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1054354764, now seen corresponding path program 2 times [2023-11-23 08:21:19,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:19,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487369758] [2023-11-23 08:21:19,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:19,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:21:19,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:21:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:21:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:21:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:21:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:21:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:21:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:21:19,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:21:19,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:21:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:21:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:21:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:21:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:21:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:21:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:21:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-11-23 08:21:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 08:21:19,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:19,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-23 08:21:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:20,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-23 08:21:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-23 08:21:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:20,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-23 08:21:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:20,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-23 08:21:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:20,021 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-23 08:21:20,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:20,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487369758] [2023-11-23 08:21:20,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487369758] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:20,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812635694] [2023-11-23 08:21:20,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:21:20,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:20,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:20,023 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 08:21:20,049 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 08:21:20,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:21:20,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:21:20,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 3018 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 08:21:20,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-23 08:21:20,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:20,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812635694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:20,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:20,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-23 08:21:20,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355130189] [2023-11-23 08:21:20,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:20,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:21:20,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:20,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:21:20,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:21:20,655 INFO L87 Difference]: Start difference. First operand 171 states and 235 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-23 08:21:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:20,841 INFO L93 Difference]: Finished difference Result 285 states and 395 transitions. [2023-11-23 08:21:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:21:20,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) Word has length 169 [2023-11-23 08:21:20,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:20,843 INFO L225 Difference]: With dead ends: 285 [2023-11-23 08:21:20,843 INFO L226 Difference]: Without dead ends: 171 [2023-11-23 08:21:20,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-11-23 08:21:20,844 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 56 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:20,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 1263 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:21:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-23 08:21:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-11-23 08:21:20,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 95 states have (on average 1.2105263157894737) internal successors, (115), 98 states have internal predecessors, (115), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2023-11-23 08:21:20,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 231 transitions. [2023-11-23 08:21:20,854 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 231 transitions. Word has length 169 [2023-11-23 08:21:20,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:20,855 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 231 transitions. [2023-11-23 08:21:20,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2023-11-23 08:21:20,855 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 231 transitions. [2023-11-23 08:21:20,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-23 08:21:20,856 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:20,857 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:20,876 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:21:21,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:21,075 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:21,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:21,076 INFO L85 PathProgramCache]: Analyzing trace with hash -7259137, now seen corresponding path program 3 times [2023-11-23 08:21:21,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:21,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894259542] [2023-11-23 08:21:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:21,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:21:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:21:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:21:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:21:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:21:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:21:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:21,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:21:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:21:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:21:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:21:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:21:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:21:21,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:21:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:21:21,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:21:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:21:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 08:21:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 08:21:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 08:21:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 08:21:21,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 08:21:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-23 08:21:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 08:21:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:21,617 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-23 08:21:21,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:21,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894259542] [2023-11-23 08:21:21,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894259542] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:21,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387956670] [2023-11-23 08:21:21,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:21:21,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:21,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:21,624 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 08:21:21,651 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 08:21:22,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-23 08:21:22,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:21:22,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 2313 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 08:21:22,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:22,125 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2023-11-23 08:21:22,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:22,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387956670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:22,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:22,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-23 08:21:22,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18525201] [2023-11-23 08:21:22,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:22,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:21:22,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:21:22,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:21:22,127 INFO L87 Difference]: Start difference. First operand 171 states and 231 transitions. Second operand has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-23 08:21:22,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:22,245 INFO L93 Difference]: Finished difference Result 182 states and 250 transitions. [2023-11-23 08:21:22,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:21:22,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 187 [2023-11-23 08:21:22,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:22,247 INFO L225 Difference]: With dead ends: 182 [2023-11-23 08:21:22,247 INFO L226 Difference]: Without dead ends: 180 [2023-11-23 08:21:22,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:21:22,248 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 23 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:22,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1453 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:21:22,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-23 08:21:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2023-11-23 08:21:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 100 states have (on average 1.2) internal successors, (120), 104 states have internal predecessors, (120), 59 states have call successors, (59), 17 states have call predecessors, (59), 19 states have return successors, (68), 58 states have call predecessors, (68), 58 states have call successors, (68) [2023-11-23 08:21:22,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 247 transitions. [2023-11-23 08:21:22,258 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 247 transitions. Word has length 187 [2023-11-23 08:21:22,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:22,259 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 247 transitions. [2023-11-23 08:21:22,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-23 08:21:22,259 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 247 transitions. [2023-11-23 08:21:22,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-23 08:21:22,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:22,261 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:22,280 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 08:21:22,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:22,478 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:22,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:22,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1172890999, now seen corresponding path program 1 times [2023-11-23 08:21:22,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:22,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841246217] [2023-11-23 08:21:22,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:22,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:22,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:21:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:21:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:21:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:21:22,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:21:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:21:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:22,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:21:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:21:22,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:21:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:21:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:21:22,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:21:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:21:22,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:21:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:21:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:21:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 08:21:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 08:21:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-11-23 08:21:22,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-23 08:21:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2023-11-23 08:21:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-23 08:21:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 08:21:22,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-23 08:21:22,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:22,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841246217] [2023-11-23 08:21:22,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841246217] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:22,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106443278] [2023-11-23 08:21:22,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:22,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:22,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:22,976 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 08:21:23,013 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 08:21:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:23,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 3081 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:21:23,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 155 proven. 52 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-23 08:21:23,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:21:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-23 08:21:23,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106443278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:21:23,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 08:21:23,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2023-11-23 08:21:23,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488904288] [2023-11-23 08:21:23,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 08:21:23,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 08:21:23,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:23,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 08:21:23,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-23 08:21:23,922 INFO L87 Difference]: Start difference. First operand 179 states and 247 transitions. Second operand has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2023-11-23 08:21:24,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:24,617 INFO L93 Difference]: Finished difference Result 308 states and 421 transitions. [2023-11-23 08:21:24,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:21:24,618 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) Word has length 191 [2023-11-23 08:21:24,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:24,619 INFO L225 Difference]: With dead ends: 308 [2023-11-23 08:21:24,619 INFO L226 Difference]: Without dead ends: 187 [2023-11-23 08:21:24,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 435 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:21:24,621 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 389 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:24,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 389 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:21:24,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-23 08:21:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 177. [2023-11-23 08:21:24,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 99 states have (on average 1.1919191919191918) internal successors, (118), 102 states have internal predecessors, (118), 59 states have call successors, (59), 17 states have call predecessors, (59), 18 states have return successors, (67), 58 states have call predecessors, (67), 58 states have call successors, (67) [2023-11-23 08:21:24,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 244 transitions. [2023-11-23 08:21:24,630 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 244 transitions. Word has length 191 [2023-11-23 08:21:24,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:24,631 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 244 transitions. [2023-11-23 08:21:24,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.857142857142858) internal successors, (124), 11 states have internal predecessors, (124), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2023-11-23 08:21:24,631 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 244 transitions. [2023-11-23 08:21:24,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-23 08:21:24,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:24,633 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:24,649 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 08:21:24,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:24,849 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:24,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:24,849 INFO L85 PathProgramCache]: Analyzing trace with hash 349925100, now seen corresponding path program 1 times [2023-11-23 08:21:24,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:24,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196131601] [2023-11-23 08:21:24,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:24,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:21:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:21:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:21:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:21:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:21:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:21:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:21:25,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:21:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:21:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:21:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:21:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:25,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:21:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:21:25,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:21:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:21:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:21:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:25,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 08:21:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 08:21:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 08:21:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 08:21:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-23 08:21:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-11-23 08:21:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-23 08:21:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:26,188 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2023-11-23 08:21:26,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:26,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196131601] [2023-11-23 08:21:26,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196131601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:26,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:21:26,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:21:26,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975586538] [2023-11-23 08:21:26,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:26,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:21:26,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:26,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:21:26,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:21:26,192 INFO L87 Difference]: Start difference. First operand 177 states and 244 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-23 08:21:26,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:26,848 INFO L93 Difference]: Finished difference Result 373 states and 533 transitions. [2023-11-23 08:21:26,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:21:26,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 197 [2023-11-23 08:21:26,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:26,851 INFO L225 Difference]: With dead ends: 373 [2023-11-23 08:21:26,851 INFO L226 Difference]: Without dead ends: 210 [2023-11-23 08:21:26,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:21:26,855 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 263 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:26,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 275 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:21:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-23 08:21:26,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 182. [2023-11-23 08:21:26,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 107 states have internal predecessors, (125), 59 states have call successors, (59), 17 states have call predecessors, (59), 18 states have return successors, (67), 58 states have call predecessors, (67), 58 states have call successors, (67) [2023-11-23 08:21:26,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 251 transitions. [2023-11-23 08:21:26,883 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 251 transitions. Word has length 197 [2023-11-23 08:21:26,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:26,884 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 251 transitions. [2023-11-23 08:21:26,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-23 08:21:26,885 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 251 transitions. [2023-11-23 08:21:26,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2023-11-23 08:21:26,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:26,888 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:21:26,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 08:21:26,888 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:26,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:26,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1050989678, now seen corresponding path program 1 times [2023-11-23 08:21:26,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:26,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646313233] [2023-11-23 08:21:26,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:26,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:21:28,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:21:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:21:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:21:28,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:21:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:21:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:21:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 08:21:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:21:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-23 08:21:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:21:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:28,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:21:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-23 08:21:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-23 08:21:28,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:21:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-23 08:21:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2023-11-23 08:21:28,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2023-11-23 08:21:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2023-11-23 08:21:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 08:21:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2023-11-23 08:21:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2023-11-23 08:21:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-23 08:21:28,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 54 proven. 18 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-23 08:21:28,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:28,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646313233] [2023-11-23 08:21:28,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646313233] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:28,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577976373] [2023-11-23 08:21:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:28,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:28,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:28,836 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 08:21:28,853 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 08:21:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:29,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 3093 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 08:21:29,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:29,471 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:21:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-23 08:21:29,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:29,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577976373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:29,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:29,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 25 [2023-11-23 08:21:29,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497064147] [2023-11-23 08:21:29,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:29,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:21:29,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:29,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:21:29,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2023-11-23 08:21:29,721 INFO L87 Difference]: Start difference. First operand 182 states and 251 transitions. Second operand has 12 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-23 08:21:32,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:34,335 WARN L539 Checker$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 08:21:36,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:38,644 WARN L539 Checker$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 08:21:40,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:42,727 WARN L539 Checker$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 08:21:44,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:46,744 WARN L539 Checker$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 08:21:48,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:50,798 WARN L539 Checker$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 08:21:52,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:54,830 WARN L539 Checker$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 08:21:56,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:21:56,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:21:56,892 INFO L93 Difference]: Finished difference Result 389 states and 526 transitions. [2023-11-23 08:21:56,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:21:56,892 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 197 [2023-11-23 08:21:56,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:21:56,893 INFO L225 Difference]: With dead ends: 389 [2023-11-23 08:21:56,893 INFO L226 Difference]: Without dead ends: 221 [2023-11-23 08:21:56,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=774, Unknown=0, NotChecked=0, Total=870 [2023-11-23 08:21:56,895 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 91 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 562 mSolverCounterSat, 10 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 562 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.0s IncrementalHoareTripleChecker+Time [2023-11-23 08:21:56,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 1500 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 562 Invalid, 13 Unknown, 0 Unchecked, 27.0s Time] [2023-11-23 08:21:56,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-23 08:21:56,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 219. [2023-11-23 08:21:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 134 states have (on average 1.2238805970149254) internal successors, (164), 139 states have internal predecessors, (164), 61 states have call successors, (61), 21 states have call predecessors, (61), 23 states have return successors, (70), 59 states have call predecessors, (70), 60 states have call successors, (70) [2023-11-23 08:21:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 295 transitions. [2023-11-23 08:21:56,905 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 295 transitions. Word has length 197 [2023-11-23 08:21:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:21:56,905 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 295 transitions. [2023-11-23 08:21:56,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2023-11-23 08:21:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 295 transitions. [2023-11-23 08:21:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-23 08:21:56,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:21:56,907 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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] [2023-11-23 08:21:56,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 08:21:57,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:57,122 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:21:57,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:21:57,123 INFO L85 PathProgramCache]: Analyzing trace with hash -505771288, now seen corresponding path program 2 times [2023-11-23 08:21:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:21:57,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054099173] [2023-11-23 08:21:57,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:21:57,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:21:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:21:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:21:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:21:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:21:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:21:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:21:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:21:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:21:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:21:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:21:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:21:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:21:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:21:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:21:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:21:57,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:21:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:21:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:21:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:58,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-23 08:21:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:21:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:58,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2023-11-23 08:21:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:58,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2023-11-23 08:21:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-23 08:21:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:58,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:21:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2023-11-23 08:21:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:21:58,042 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 6 proven. 37 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2023-11-23 08:21:58,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:21:58,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054099173] [2023-11-23 08:21:58,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054099173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:21:58,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112338053] [2023-11-23 08:21:58,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:21:58,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:21:58,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:21:58,057 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 08:21:58,057 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 08:21:58,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:21:58,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:21:58,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-23 08:21:58,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:21:58,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:21:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 201 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-11-23 08:21:58,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:21:58,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112338053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:21:58,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:21:58,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 22 [2023-11-23 08:21:58,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735214171] [2023-11-23 08:21:58,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:21:58,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:21:58,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:21:58,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:21:58,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:21:58,851 INFO L87 Difference]: Start difference. First operand 219 states and 295 transitions. Second operand has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-23 08:22:01,445 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 08:22:03,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:05,711 WARN L539 Checker$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 08:22:07,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:09,787 WARN L539 Checker$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 08:22:11,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:13,800 WARN L539 Checker$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 08:22:15,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:17,832 WARN L539 Checker$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 08:22:19,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:21,864 WARN L539 Checker$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 08:22:23,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:22:25,890 WARN L539 Checker$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 08:22:25,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:25,906 INFO L93 Difference]: Finished difference Result 376 states and 508 transitions. [2023-11-23 08:22:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:22:25,906 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 201 [2023-11-23 08:22:25,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:25,907 INFO L225 Difference]: With dead ends: 376 [2023-11-23 08:22:25,907 INFO L226 Difference]: Without dead ends: 218 [2023-11-23 08:22:25,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2023-11-23 08:22:25,909 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 95 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 8 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:25,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1202 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 500 Invalid, 13 Unknown, 0 Unchecked, 26.9s Time] [2023-11-23 08:22:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-11-23 08:22:25,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2023-11-23 08:22:25,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 132 states have (on average 1.2121212121212122) internal successors, (160), 136 states have internal predecessors, (160), 61 states have call successors, (61), 21 states have call predecessors, (61), 22 states have return successors, (69), 59 states have call predecessors, (69), 60 states have call successors, (69) [2023-11-23 08:22:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 290 transitions. [2023-11-23 08:22:25,923 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 290 transitions. Word has length 201 [2023-11-23 08:22:25,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:25,923 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 290 transitions. [2023-11-23 08:22:25,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 4 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-23 08:22:25,924 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 290 transitions. [2023-11-23 08:22:25,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2023-11-23 08:22:25,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:25,925 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 08:22:25,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 08:22:26,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:22:26,126 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:26,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:26,126 INFO L85 PathProgramCache]: Analyzing trace with hash -451569310, now seen corresponding path program 3 times [2023-11-23 08:22:26,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:26,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230155635] [2023-11-23 08:22:26,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:26,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:26,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:26,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:26,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:22:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:26,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:22:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:26,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:22:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:26,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:22:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:26,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:22:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:22:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:26,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:26,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:26,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:26,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:22:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:22:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:22:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 08:22:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 08:22:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:27,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:22:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 08:22:27,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-11-23 08:22:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2023-11-23 08:22:27,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-11-23 08:22:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-23 08:22:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-23 08:22:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-23 08:22:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-23 08:22:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-23 08:22:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-23 08:22:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2023-11-23 08:22:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:27,144 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-11-23 08:22:27,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:27,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230155635] [2023-11-23 08:22:27,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230155635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:22:27,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381436823] [2023-11-23 08:22:27,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:22:27,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:22:27,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:22:27,145 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 08:22:27,159 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 08:22:27,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 08:22:27,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:22:27,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 2540 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-23 08:22:27,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:22:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-23 08:22:27,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:22:27,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381436823] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:27,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:22:27,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2023-11-23 08:22:27,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115674230] [2023-11-23 08:22:27,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:27,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:22:27,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:27,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:22:27,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:22:27,890 INFO L87 Difference]: Start difference. First operand 216 states and 290 transitions. Second operand has 9 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 08:22:28,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:28,106 INFO L93 Difference]: Finished difference Result 426 states and 573 transitions. [2023-11-23 08:22:28,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:22:28,107 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 205 [2023-11-23 08:22:28,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:28,108 INFO L225 Difference]: With dead ends: 426 [2023-11-23 08:22:28,108 INFO L226 Difference]: Without dead ends: 224 [2023-11-23 08:22:28,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:22:28,110 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 13 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:28,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1591 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:22:28,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-23 08:22:28,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 220. [2023-11-23 08:22:28,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 135 states have (on average 1.2074074074074075) internal successors, (163), 140 states have internal predecessors, (163), 61 states have call successors, (61), 21 states have call predecessors, (61), 23 states have return successors, (70), 59 states have call predecessors, (70), 60 states have call successors, (70) [2023-11-23 08:22:28,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 294 transitions. [2023-11-23 08:22:28,120 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 294 transitions. Word has length 205 [2023-11-23 08:22:28,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:28,121 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 294 transitions. [2023-11-23 08:22:28,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 08:22:28,121 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 294 transitions. [2023-11-23 08:22:28,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-23 08:22:28,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:28,123 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:22:28,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 08:22:28,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 08:22:28,353 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:28,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:28,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1857970979, now seen corresponding path program 1 times [2023-11-23 08:22:28,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:28,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599118249] [2023-11-23 08:22:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:28,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:28,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:22:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:22:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:22:28,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:22:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:22:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:22:28,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:28,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:22:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:22:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:22:28,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:22:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:22:28,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:22:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:22:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:22:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:22:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:22:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 08:22:28,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-23 08:22:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-23 08:22:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:22:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:22:28,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-11-23 08:22:28,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-11-23 08:22:28,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:28,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599118249] [2023-11-23 08:22:28,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599118249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:22:28,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376783558] [2023-11-23 08:22:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:28,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:22:28,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:22:28,730 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 08:22:28,767 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 08:22:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 3112 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:22:29,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:22:29,299 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-23 08:22:29,299 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:22:29,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376783558] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:29,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:22:29,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-23 08:22:29,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452497975] [2023-11-23 08:22:29,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:29,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:22:29,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:29,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:22:29,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:22:29,303 INFO L87 Difference]: Start difference. First operand 220 states and 294 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 08:22:29,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:29,371 INFO L93 Difference]: Finished difference Result 439 states and 591 transitions. [2023-11-23 08:22:29,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:22:29,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 207 [2023-11-23 08:22:29,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:29,373 INFO L225 Difference]: With dead ends: 439 [2023-11-23 08:22:29,373 INFO L226 Difference]: Without dead ends: 233 [2023-11-23 08:22:29,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:22:29,374 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 9 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 632 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 08:22:29,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 632 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:22:29,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-11-23 08:22:29,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 224. [2023-11-23 08:22:29,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 139 states have (on average 1.2014388489208634) internal successors, (167), 144 states have internal predecessors, (167), 61 states have call successors, (61), 21 states have call predecessors, (61), 23 states have return successors, (70), 59 states have call predecessors, (70), 60 states have call successors, (70) [2023-11-23 08:22:29,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 298 transitions. [2023-11-23 08:22:29,385 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 298 transitions. Word has length 207 [2023-11-23 08:22:29,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:29,386 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 298 transitions. [2023-11-23 08:22:29,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 08:22:29,386 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 298 transitions. [2023-11-23 08:22:29,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-23 08:22:29,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:29,388 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:22:29,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 08:22:29,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:22:29,605 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:29,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:29,605 INFO L85 PathProgramCache]: Analyzing trace with hash -874497255, now seen corresponding path program 1 times [2023-11-23 08:22:29,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:29,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430592596] [2023-11-23 08:22:29,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:29,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:22:29,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:22:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:22:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:22:29,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:22:29,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:22:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:29,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:22:29,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:22:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:22:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:29,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:22:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:22:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:22:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:22:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:22:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:22:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:22:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 08:22:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-23 08:22:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-23 08:22:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:22:29,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:22:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-11-23 08:22:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-23 08:22:29,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:29,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430592596] [2023-11-23 08:22:29,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430592596] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:22:29,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335243625] [2023-11-23 08:22:29,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:29,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:22:29,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:22:29,959 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 08:22:29,976 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 08:22:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:30,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 3114 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:22:30,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:22:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2023-11-23 08:22:30,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:22:30,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335243625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:22:30,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:22:30,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-23 08:22:30,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083240080] [2023-11-23 08:22:30,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:22:30,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:22:30,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:30,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:22:30,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:22:30,538 INFO L87 Difference]: Start difference. First operand 224 states and 298 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 08:22:30,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:22:30,628 INFO L93 Difference]: Finished difference Result 464 states and 623 transitions. [2023-11-23 08:22:30,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:22:30,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 207 [2023-11-23 08:22:30,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:22:30,631 INFO L225 Difference]: With dead ends: 464 [2023-11-23 08:22:30,631 INFO L226 Difference]: Without dead ends: 254 [2023-11-23 08:22:30,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:22:30,633 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 28 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:22:30,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 648 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:22:30,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-23 08:22:30,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 224. [2023-11-23 08:22:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 139 states have (on average 1.1870503597122302) internal successors, (165), 144 states have internal predecessors, (165), 61 states have call successors, (61), 21 states have call predecessors, (61), 23 states have return successors, (70), 59 states have call predecessors, (70), 60 states have call successors, (70) [2023-11-23 08:22:30,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 296 transitions. [2023-11-23 08:22:30,648 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 296 transitions. Word has length 207 [2023-11-23 08:22:30,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:22:30,648 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 296 transitions. [2023-11-23 08:22:30,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-23 08:22:30,648 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 296 transitions. [2023-11-23 08:22:30,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2023-11-23 08:22:30,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:22:30,650 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:22:30,672 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 08:22:30,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 08:22:30,872 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:22:30,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:22:30,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1225241175, now seen corresponding path program 1 times [2023-11-23 08:22:30,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:22:30,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591985930] [2023-11-23 08:22:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:30,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:22:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:22:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:22:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 08:22:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:22:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 08:22:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:22:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 08:22:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:22:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:22:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-23 08:22:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-23 08:22:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 08:22:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:22:31,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 08:22:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:22:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-23 08:22:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-23 08:22:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-23 08:22:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-23 08:22:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2023-11-23 08:22:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2023-11-23 08:22:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2023-11-23 08:22:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2023-11-23 08:22:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2023-11-23 08:22:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2023-11-23 08:22:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:31,781 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 19 proven. 25 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2023-11-23 08:22:31,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:22:31,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591985930] [2023-11-23 08:22:31,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591985930] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:22:31,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655754153] [2023-11-23 08:22:31,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:22:31,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:22:31,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:22:31,783 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 08:22:31,786 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 08:22:32,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:22:32,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 3109 conjuncts, 115 conjunts are in the unsatisfiable core [2023-11-23 08:22:32,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:22:32,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:22:32,506 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:22:32,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-23 08:22:32,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:22:34,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-23 08:22:37,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2023-11-23 08:22:37,336 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-23 08:22:37,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 16 [2023-11-23 08:22:37,383 INFO L349 Elim1Store]: treesize reduction 126, result has 18.7 percent of original size [2023-11-23 08:22:37,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2023-11-23 08:22:39,481 WARN L876 $PredicateComparison]: unable to prove that (or (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_6| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_6| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|)) (= (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_6|) 0)))) (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_6| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_6|) 8) 0)))) is different from true [2023-11-23 08:22:41,791 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:22:41,791 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 33 treesize of output 33 [2023-11-23 08:22:43,852 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_7| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (and (= (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_7|) 0)) (not (= |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_7| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|)))) is different from true [2023-11-23 08:22:45,936 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_8| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (and (= (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|) (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_8|) 0)) (not (= |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_8| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|)))) is different from true [2023-11-23 08:22:48,032 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_9| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_9| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_9|) 0) (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|)))) is different from true [2023-11-23 08:22:50,266 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_5 Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (and (= (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|) (select (select |c_#memory_int| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_5) 0)) (not (= |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_5)))) is different from true [2023-11-23 08:22:52,365 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int) (v_aws_byte_buf_write_~buf.base_BEFORE_CALL_6 Int)) (and (not (= |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_6)) (= (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|) (select (select |c_#memory_int| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_6) 0)))) is different from true [2023-11-23 08:22:54,448 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int) (v_aws_byte_buf_write_~buf.base_BEFORE_CALL_7 Int)) (and (= (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|) (select (select |c_#memory_int| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_7) 0)) (not (= |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_7)))) is different from true [2023-11-23 08:22:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 85 proven. 76 refuted. 0 times theorem prover too weak. 47 trivial. 165 not checked. [2023-11-23 08:22:55,179 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:22:56,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655754153] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:22:56,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:22:56,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 40] total 50 [2023-11-23 08:22:56,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832982388] [2023-11-23 08:22:56,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:22:56,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-23 08:22:56,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:22:56,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-23 08:22:56,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=3242, Unknown=10, NotChecked=840, Total=4290 [2023-11-23 08:22:56,410 INFO L87 Difference]: Start difference. First operand 224 states and 296 transitions. Second operand has 50 states, 42 states have (on average 4.119047619047619) internal successors, (173), 42 states have internal predecessors, (173), 15 states have call successors, (58), 18 states have call predecessors, (58), 18 states have return successors, (55), 12 states have call predecessors, (55), 14 states have call successors, (55) [2023-11-23 08:23:01,442 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 08:23:05,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:07,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:09,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:13,960 WARN L539 Checker$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 08:23:19,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:23:21,895 WARN L539 Checker$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 08:24:28,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:30,153 WARN L539 Checker$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 08:24:32,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:24:35,442 WARN L539 Checker$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 08:25:32,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] Killed by 15