./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_string_new_from_array_harness.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_string_new_from_array_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 364b54724e976c015f9881f66521e5c6d863e13e3a8324ac15c0186b650523fa --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 09:12:51,393 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 09:12:51,429 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 09:12:51,432 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 09:12:51,433 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 09:12:51,447 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 09:12:51,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 09:12:51,447 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 09:12:51,448 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 09:12:51,448 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 09:12:51,449 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 09:12:51,449 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 09:12:51,449 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 09:12:51,450 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 09:12:51,450 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 09:12:51,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 09:12:51,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 09:12:51,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 09:12:51,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 09:12:51,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 09:12:51,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 09:12:51,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 09:12:51,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 09:12:51,453 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 09:12:51,453 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 09:12:51,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 09:12:51,454 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 09:12:51,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 09:12:51,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:12:51,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 09:12:51,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 09:12:51,455 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 09:12:51,456 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 09:12:51,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 09:12:51,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 09:12:51,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 09:12:51,457 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 09:12:51,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 09:12:51,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 09:12:51,458 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 364b54724e976c015f9881f66521e5c6d863e13e3a8324ac15c0186b650523fa Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 09:12:51,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 09:12:51,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 09:12:51,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 09:12:51,633 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 09:12:51,634 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 09:12:51,635 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_string_new_from_array_harness.i [2023-11-23 09:12:52,732 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 09:12:53,053 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 09:12:53,054 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_new_from_array_harness.i [2023-11-23 09:12:53,090 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832fdb6e0/0b9b6b990cd844c5971343a7741a070e/FLAGfec8c0063 [2023-11-23 09:12:53,101 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/832fdb6e0/0b9b6b990cd844c5971343a7741a070e [2023-11-23 09:12:53,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 09:12:53,107 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 09:12:53,109 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 09:12:53,109 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 09:12:53,112 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 09:12:53,113 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:53" (1/1) ... [2023-11-23 09:12:53,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c18105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:53, skipping insertion in model container [2023-11-23 09:12:53,113 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:12:53" (1/1) ... [2023-11-23 09:12:53,212 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 09:12:53,424 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_new_from_array_harness.i[4499,4512] [2023-11-23 09:12:53,432 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_new_from_array_harness.i[4559,4572] [2023-11-23 09:12:53,938 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:53,939 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:53,942 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:53,942 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:53,943 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:53,963 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:53,967 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:53,969 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:53,971 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,190 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:12:54,191 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:12:54,192 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:12:54,193 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:12:54,194 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:12:54,194 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:12:54,195 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:12:54,195 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:12:54,196 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:12:54,196 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:12:54,414 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,415 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:12:54,531 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 09:12:54,548 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_new_from_array_harness.i[4499,4512] [2023-11-23 09:12:54,548 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_string_new_from_array_harness.i[4559,4572] [2023-11-23 09:12:54,585 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,586 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,586 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,586 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,587 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,596 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,596 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,597 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,598 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,628 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 09:12:54,629 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 09:12:54,629 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 09:12:54,630 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 09:12:54,630 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 09:12:54,631 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 09:12:54,631 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 09:12:54,631 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 09:12:54,632 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 09:12:54,632 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 09:12:54,698 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-23 09:12:54,702 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,703 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 09:12:54,710 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2023-11-23 09:12:54,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 09:12:54,883 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,883 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,883 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,883 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,884 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,884 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,884 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,884 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,884 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,885 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,885 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,885 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,885 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,886 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,886 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,886 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,886 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,886 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 09:12:54,893 INFO L206 MainTranslator]: Completed translation [2023-11-23 09:12:54,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54 WrapperNode [2023-11-23 09:12:54,894 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 09:12:54,895 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 09:12:54,895 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 09:12:54,895 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 09:12:54,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54" (1/1) ... [2023-11-23 09:12:54,987 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54" (1/1) ... [2023-11-23 09:12:55,046 INFO L138 Inliner]: procedures = 689, calls = 2740, calls flagged for inlining = 58, calls inlined = 6, statements flattened = 792 [2023-11-23 09:12:55,054 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 09:12:55,055 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 09:12:55,055 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 09:12:55,055 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 09:12:55,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54" (1/1) ... [2023-11-23 09:12:55,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54" (1/1) ... [2023-11-23 09:12:55,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54" (1/1) ... [2023-11-23 09:12:55,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54" (1/1) ... [2023-11-23 09:12:55,113 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54" (1/1) ... [2023-11-23 09:12:55,125 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54" (1/1) ... [2023-11-23 09:12:55,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54" (1/1) ... [2023-11-23 09:12:55,140 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54" (1/1) ... [2023-11-23 09:12:55,177 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 09:12:55,180 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 09:12:55,181 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 09:12:55,181 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 09:12:55,182 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54" (1/1) ... [2023-11-23 09:12:55,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 09:12:55,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:12:55,205 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 09:12:55,256 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 09:12:55,280 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-23 09:12:55,280 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-23 09:12:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 09:12:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 09:12:55,281 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 09:12:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-23 09:12:55,281 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 09:12:55,281 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 09:12:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 09:12:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 09:12:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 09:12:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-23 09:12:55,282 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-23 09:12:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 09:12:55,283 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 09:12:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 09:12:55,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 09:12:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 09:12:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 09:12:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 09:12:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 09:12:55,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 09:12:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 09:12:55,284 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 09:12:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-23 09:12:55,284 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-23 09:12:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 09:12:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 09:12:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 09:12:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 09:12:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 09:12:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 09:12:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-23 09:12:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-23 09:12:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 09:12:55,285 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 09:12:55,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 09:12:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 09:12:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2023-11-23 09:12:55,286 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2023-11-23 09:12:55,286 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 09:12:55,287 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 09:12:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 09:12:55,287 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 09:12:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 09:12:55,287 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 09:12:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 09:12:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-23 09:12:55,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 09:12:55,526 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 09:12:55,528 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 09:12:55,637 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2023-11-23 09:12:56,117 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 09:12:56,232 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 09:12:56,232 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 09:12:56,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:56 BoogieIcfgContainer [2023-11-23 09:12:56,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 09:12:56,235 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 09:12:56,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 09:12:56,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 09:12:56,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:12:53" (1/3) ... [2023-11-23 09:12:56,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5740881a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:56, skipping insertion in model container [2023-11-23 09:12:56,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:12:54" (2/3) ... [2023-11-23 09:12:56,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5740881a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:12:56, skipping insertion in model container [2023-11-23 09:12:56,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:12:56" (3/3) ... [2023-11-23 09:12:56,242 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_array_harness.i [2023-11-23 09:12:56,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 09:12:56,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 09:12:56,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 09:12:56,311 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;@6bfbcb48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 09:12:56,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 09:12:56,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 115 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 09:12:56,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 09:12:56,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:56,330 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:56,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:56,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:56,337 INFO L85 PathProgramCache]: Analyzing trace with hash 450180763, now seen corresponding path program 1 times [2023-11-23 09:12:56,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:56,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567866540] [2023-11-23 09:12:56,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:56,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:12:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 09:12:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:12:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 09:12:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 09:12:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:12:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:12:56,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:56,991 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 09:12:56,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:56,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567866540] [2023-11-23 09:12:56,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567866540] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:56,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:56,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 09:12:56,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056352482] [2023-11-23 09:12:56,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:56,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 09:12:56,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:57,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 09:12:57,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:12:57,028 INFO L87 Difference]: Start difference. First operand has 115 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 09:12:57,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:57,436 INFO L93 Difference]: Finished difference Result 239 states and 320 transitions. [2023-11-23 09:12:57,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 09:12:57,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 64 [2023-11-23 09:12:57,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:57,456 INFO L225 Difference]: With dead ends: 239 [2023-11-23 09:12:57,456 INFO L226 Difference]: Without dead ends: 125 [2023-11-23 09:12:57,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 09:12:57,461 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 47 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:57,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 132 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 09:12:57,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-23 09:12:57,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 112. [2023-11-23 09:12:57,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 63 states have internal predecessors, (73), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 09:12:57,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 138 transitions. [2023-11-23 09:12:57,525 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 138 transitions. Word has length 64 [2023-11-23 09:12:57,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:57,525 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 138 transitions. [2023-11-23 09:12:57,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 09:12:57,526 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 138 transitions. [2023-11-23 09:12:57,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-23 09:12:57,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:57,529 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:57,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 09:12:57,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:57,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:57,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1128117209, now seen corresponding path program 1 times [2023-11-23 09:12:57,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:57,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980202639] [2023-11-23 09:12:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:57,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:57,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:57,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:57,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:12:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:57,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:57,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:57,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 09:12:57,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:57,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:12:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:57,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 09:12:57,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:57,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 09:12:57,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:58,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:58,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:12:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:58,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:12:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:58,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:58,159 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 09:12:58,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:58,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980202639] [2023-11-23 09:12:58,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980202639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:58,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:58,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 09:12:58,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771169989] [2023-11-23 09:12:58,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:58,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 09:12:58,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:58,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 09:12:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 09:12:58,164 INFO L87 Difference]: Start difference. First operand 112 states and 138 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 09:12:58,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:58,735 INFO L93 Difference]: Finished difference Result 166 states and 203 transitions. [2023-11-23 09:12:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:12:58,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 64 [2023-11-23 09:12:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:58,739 INFO L225 Difference]: With dead ends: 166 [2023-11-23 09:12:58,739 INFO L226 Difference]: Without dead ends: 129 [2023-11-23 09:12:58,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:12:58,745 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 48 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:58,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 284 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 09:12:58,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-23 09:12:58,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 116. [2023-11-23 09:12:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 66 states have internal predecessors, (76), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2023-11-23 09:12:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 142 transitions. [2023-11-23 09:12:58,761 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 142 transitions. Word has length 64 [2023-11-23 09:12:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:58,762 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 142 transitions. [2023-11-23 09:12:58,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-23 09:12:58,763 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 142 transitions. [2023-11-23 09:12:58,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 09:12:58,765 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:58,765 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:58,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 09:12:58,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:58,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:58,766 INFO L85 PathProgramCache]: Analyzing trace with hash 981466432, now seen corresponding path program 1 times [2023-11-23 09:12:58,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:58,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574198012] [2023-11-23 09:12:58,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:58,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:59,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:12:59,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 09:12:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:12:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 09:12:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 09:12:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 09:12:59,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 09:12:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:12:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:12:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:12:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-23 09:12:59,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:12:59,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574198012] [2023-11-23 09:12:59,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574198012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:12:59,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:12:59,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:12:59,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231118769] [2023-11-23 09:12:59,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:12:59,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:12:59,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:12:59,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:12:59,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:12:59,181 INFO L87 Difference]: Start difference. First operand 116 states and 142 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 09:12:59,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:12:59,722 INFO L93 Difference]: Finished difference Result 180 states and 225 transitions. [2023-11-23 09:12:59,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 09:12:59,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 68 [2023-11-23 09:12:59,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:12:59,724 INFO L225 Difference]: With dead ends: 180 [2023-11-23 09:12:59,724 INFO L226 Difference]: Without dead ends: 141 [2023-11-23 09:12:59,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 09:12:59,725 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 74 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 09:12:59,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 296 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 09:12:59,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-11-23 09:12:59,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 112. [2023-11-23 09:12:59,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 63 states have internal predecessors, (71), 33 states have call successors, (33), 16 states have call predecessors, (33), 16 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 09:12:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 136 transitions. [2023-11-23 09:12:59,736 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 136 transitions. Word has length 68 [2023-11-23 09:12:59,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:12:59,736 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 136 transitions. [2023-11-23 09:12:59,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-23 09:12:59,736 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 136 transitions. [2023-11-23 09:12:59,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 09:12:59,737 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:12:59,738 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:12:59,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 09:12:59,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:12:59,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:12:59,738 INFO L85 PathProgramCache]: Analyzing trace with hash 830130306, now seen corresponding path program 1 times [2023-11-23 09:12:59,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:12:59,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596149539] [2023-11-23 09:12:59,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:12:59,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:12:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:13:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 09:13:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:13:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 09:13:00,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:13:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:13:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:13:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:13:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:13:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 09:13:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 09:13:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-23 09:13:00,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-23 09:13:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 09:13:00,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:13:00,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596149539] [2023-11-23 09:13:00,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596149539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:13:00,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:13:00,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 09:13:00,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582740652] [2023-11-23 09:13:00,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:13:00,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 09:13:00,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:13:00,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 09:13:00,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 09:13:00,415 INFO L87 Difference]: Start difference. First operand 112 states and 136 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 09:13:01,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:13:01,152 INFO L93 Difference]: Finished difference Result 182 states and 224 transitions. [2023-11-23 09:13:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 09:13:01,153 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 107 [2023-11-23 09:13:01,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:13:01,154 INFO L225 Difference]: With dead ends: 182 [2023-11-23 09:13:01,154 INFO L226 Difference]: Without dead ends: 132 [2023-11-23 09:13:01,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2023-11-23 09:13:01,155 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 139 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 09:13:01,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 354 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 09:13:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-23 09:13:01,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 116. [2023-11-23 09:13:01,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 66 states have internal predecessors, (74), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (33), 33 states have call predecessors, (33), 32 states have call successors, (33) [2023-11-23 09:13:01,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 140 transitions. [2023-11-23 09:13:01,165 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 140 transitions. Word has length 107 [2023-11-23 09:13:01,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:13:01,165 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 140 transitions. [2023-11-23 09:13:01,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2023-11-23 09:13:01,166 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 140 transitions. [2023-11-23 09:13:01,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 09:13:01,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:13:01,167 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:13:01,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 09:13:01,167 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:13:01,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:13:01,168 INFO L85 PathProgramCache]: Analyzing trace with hash 872634202, now seen corresponding path program 1 times [2023-11-23 09:13:01,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:13:01,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868665884] [2023-11-23 09:13:01,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:13:01,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:13:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:13:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:01,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 09:13:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:13:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 09:13:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:13:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:13:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:13:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:13:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:13:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 09:13:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 09:13:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 09:13:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-23 09:13:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 09:13:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:01,820 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 09:13:01,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:13:01,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868665884] [2023-11-23 09:13:01,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868665884] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:13:01,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:13:01,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 09:13:01,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982498251] [2023-11-23 09:13:01,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:13:01,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 09:13:01,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:13:01,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 09:13:01,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 09:13:01,823 INFO L87 Difference]: Start difference. First operand 116 states and 140 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 09:13:02,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:13:02,582 INFO L93 Difference]: Finished difference Result 189 states and 233 transitions. [2023-11-23 09:13:02,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 09:13:02,583 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 111 [2023-11-23 09:13:02,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:13:02,584 INFO L225 Difference]: With dead ends: 189 [2023-11-23 09:13:02,584 INFO L226 Difference]: Without dead ends: 127 [2023-11-23 09:13:02,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2023-11-23 09:13:02,585 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 169 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 09:13:02,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 365 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 09:13:02,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-23 09:13:02,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 110. [2023-11-23 09:13:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 62 states have internal predecessors, (68), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2023-11-23 09:13:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 131 transitions. [2023-11-23 09:13:02,593 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 131 transitions. Word has length 111 [2023-11-23 09:13:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:13:02,593 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 131 transitions. [2023-11-23 09:13:02,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (23), 7 states have call predecessors, (23), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 09:13:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 131 transitions. [2023-11-23 09:13:02,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 09:13:02,595 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:13:02,595 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:13:02,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 09:13:02,595 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:13:02,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:13:02,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1713413137, now seen corresponding path program 1 times [2023-11-23 09:13:02,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:13:02,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660718139] [2023-11-23 09:13:02,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:13:02,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:13:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:13:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:06,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 09:13:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:13:06,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 09:13:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:13:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:13:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:13:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:13:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:13:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 09:13:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 09:13:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 09:13:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 09:13:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:06,808 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 09:13:06,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:13:06,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660718139] [2023-11-23 09:13:06,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660718139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:13:06,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:13:06,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2023-11-23 09:13:06,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490814926] [2023-11-23 09:13:06,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:13:06,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-23 09:13:06,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:13:06,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-23 09:13:06,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2023-11-23 09:13:06,812 INFO L87 Difference]: Start difference. First operand 110 states and 131 transitions. Second operand has 28 states, 21 states have (on average 2.238095238095238) internal successors, (47), 18 states have internal predecessors, (47), 6 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 8 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-23 09:13:09,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:13:09,280 INFO L93 Difference]: Finished difference Result 177 states and 215 transitions. [2023-11-23 09:13:09,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-23 09:13:09,280 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 21 states have (on average 2.238095238095238) internal successors, (47), 18 states have internal predecessors, (47), 6 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 8 states have call predecessors, (21), 5 states have call successors, (21) Word has length 117 [2023-11-23 09:13:09,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:13:09,281 INFO L225 Difference]: With dead ends: 177 [2023-11-23 09:13:09,281 INFO L226 Difference]: Without dead ends: 134 [2023-11-23 09:13:09,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=309, Invalid=2553, Unknown=0, NotChecked=0, Total=2862 [2023-11-23 09:13:09,283 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 311 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 2320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 09:13:09,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 924 Invalid, 2320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 09:13:09,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-23 09:13:09,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 122. [2023-11-23 09:13:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 68 states have (on average 1.1176470588235294) internal successors, (76), 71 states have internal predecessors, (76), 34 states have call successors, (34), 17 states have call predecessors, (34), 19 states have return successors, (37), 33 states have call predecessors, (37), 33 states have call successors, (37) [2023-11-23 09:13:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 147 transitions. [2023-11-23 09:13:09,292 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 147 transitions. Word has length 117 [2023-11-23 09:13:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:13:09,293 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 147 transitions. [2023-11-23 09:13:09,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 21 states have (on average 2.238095238095238) internal successors, (47), 18 states have internal predecessors, (47), 6 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 8 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-23 09:13:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 147 transitions. [2023-11-23 09:13:09,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 09:13:09,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:13:09,294 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:13:09,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 09:13:09,295 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:13:09,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:13:09,295 INFO L85 PathProgramCache]: Analyzing trace with hash 61594225, now seen corresponding path program 1 times [2023-11-23 09:13:09,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:13:09,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299479995] [2023-11-23 09:13:09,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:13:09,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:13:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:13:09,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 09:13:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:13:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 09:13:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:13:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:13:09,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:13:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:13:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:09,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:13:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 09:13:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 09:13:09,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:09,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 09:13:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:09,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 09:13:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:10,113 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 09:13:10,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:13:10,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299479995] [2023-11-23 09:13:10,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299479995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:13:10,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:13:10,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-11-23 09:13:10,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450275874] [2023-11-23 09:13:10,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:13:10,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 09:13:10,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:13:10,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 09:13:10,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2023-11-23 09:13:10,116 INFO L87 Difference]: Start difference. First operand 122 states and 147 transitions. Second operand has 19 states, 16 states have (on average 2.9375) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:13:11,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:13:11,434 INFO L93 Difference]: Finished difference Result 175 states and 211 transitions. [2023-11-23 09:13:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-23 09:13:11,435 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.9375) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) Word has length 117 [2023-11-23 09:13:11,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:13:11,436 INFO L225 Difference]: With dead ends: 175 [2023-11-23 09:13:11,436 INFO L226 Difference]: Without dead ends: 134 [2023-11-23 09:13:11,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=926, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 09:13:11,437 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 108 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:13:11,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 702 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 09:13:11,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-23 09:13:11,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 126. [2023-11-23 09:13:11,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 75 states have internal predecessors, (80), 34 states have call successors, (34), 17 states have call predecessors, (34), 20 states have return successors, (38), 33 states have call predecessors, (38), 33 states have call successors, (38) [2023-11-23 09:13:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2023-11-23 09:13:11,454 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 117 [2023-11-23 09:13:11,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:13:11,455 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2023-11-23 09:13:11,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.9375) internal successors, (47), 12 states have internal predecessors, (47), 3 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:13:11,455 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2023-11-23 09:13:11,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-11-23 09:13:11,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:13:11,458 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:13:11,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 09:13:11,459 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:13:11,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:13:11,459 INFO L85 PathProgramCache]: Analyzing trace with hash 741652595, now seen corresponding path program 1 times [2023-11-23 09:13:11,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:13:11,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364036925] [2023-11-23 09:13:11,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:13:11,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:13:11,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:11,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:11,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:11,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:13:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:11,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 09:13:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:11,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:13:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:11,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 09:13:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:11,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:13:11,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:11,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:13:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:11,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:13:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:11,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:13:11,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:12,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:12,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:12,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:13:12,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:12,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 09:13:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:12,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 09:13:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:12,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:12,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:12,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:12,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 09:13:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-23 09:13:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:12,158 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2023-11-23 09:13:12,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:13:12,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364036925] [2023-11-23 09:13:12,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364036925] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:13:12,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:13:12,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 09:13:12,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978850557] [2023-11-23 09:13:12,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:13:12,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 09:13:12,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:13:12,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 09:13:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-11-23 09:13:12,161 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:13:13,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:13:13,404 INFO L93 Difference]: Finished difference Result 185 states and 222 transitions. [2023-11-23 09:13:13,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 09:13:13,406 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) Word has length 117 [2023-11-23 09:13:13,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:13:13,407 INFO L225 Difference]: With dead ends: 185 [2023-11-23 09:13:13,407 INFO L226 Difference]: Without dead ends: 135 [2023-11-23 09:13:13,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2023-11-23 09:13:13,408 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 89 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 09:13:13,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 657 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 09:13:13,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-23 09:13:13,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 124. [2023-11-23 09:13:13,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 70 states have (on average 1.1285714285714286) internal successors, (79), 73 states have internal predecessors, (79), 34 states have call successors, (34), 17 states have call predecessors, (34), 19 states have return successors, (35), 33 states have call predecessors, (35), 33 states have call successors, (35) [2023-11-23 09:13:13,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2023-11-23 09:13:13,423 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 117 [2023-11-23 09:13:13,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:13:13,425 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2023-11-23 09:13:13,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.357142857142857) internal successors, (47), 10 states have internal predecessors, (47), 3 states have call successors, (23), 6 states have call predecessors, (23), 5 states have return successors, (21), 6 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:13:13,425 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2023-11-23 09:13:13,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-23 09:13:13,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:13:13,426 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:13:13,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 09:13:13,426 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:13:13,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:13:13,427 INFO L85 PathProgramCache]: Analyzing trace with hash 706518901, now seen corresponding path program 1 times [2023-11-23 09:13:13,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:13:13,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297658340] [2023-11-23 09:13:13,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:13:13,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:13:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:13:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:13,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 09:13:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:13:13,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 09:13:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:13:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:13:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:13:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:13:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:13:13,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 09:13:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 09:13:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 09:13:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-11-23 09:13:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-23 09:13:13,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:13:13,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297658340] [2023-11-23 09:13:13,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297658340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 09:13:13,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 09:13:13,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 09:13:13,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477835336] [2023-11-23 09:13:13,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 09:13:13,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 09:13:13,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:13:13,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 09:13:13,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-23 09:13:13,940 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:13:14,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:13:14,496 INFO L93 Difference]: Finished difference Result 178 states and 213 transitions. [2023-11-23 09:13:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 09:13:14,497 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 118 [2023-11-23 09:13:14,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:13:14,498 INFO L225 Difference]: With dead ends: 178 [2023-11-23 09:13:14,498 INFO L226 Difference]: Without dead ends: 132 [2023-11-23 09:13:14,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-23 09:13:14,498 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 125 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 09:13:14,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 209 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 09:13:14,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-23 09:13:14,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 125. [2023-11-23 09:13:14,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 71 states have (on average 1.1267605633802817) internal successors, (80), 74 states have internal predecessors, (80), 34 states have call successors, (34), 17 states have call predecessors, (34), 19 states have return successors, (35), 33 states have call predecessors, (35), 33 states have call successors, (35) [2023-11-23 09:13:14,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 149 transitions. [2023-11-23 09:13:14,506 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 149 transitions. Word has length 118 [2023-11-23 09:13:14,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:13:14,507 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 149 transitions. [2023-11-23 09:13:14,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (23), 6 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 09:13:14,507 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 149 transitions. [2023-11-23 09:13:14,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-23 09:13:14,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:13:14,508 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:13:14,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 09:13:14,508 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:13:14,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:13:14,509 INFO L85 PathProgramCache]: Analyzing trace with hash -870827663, now seen corresponding path program 1 times [2023-11-23 09:13:14,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:13:14,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037853697] [2023-11-23 09:13:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:13:14,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:13:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:20,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:13:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:20,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 09:13:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:20,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:13:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:20,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 09:13:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:20,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:13:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:20,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:13:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:20,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:13:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:13:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:21,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:21,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:13:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:21,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 09:13:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:21,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 09:13:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:21,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:21,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:21,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:21,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 09:13:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:21,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-23 09:13:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:22,115 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 09:13:22,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 09:13:22,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037853697] [2023-11-23 09:13:22,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037853697] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:13:22,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034992745] [2023-11-23 09:13:22,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:13:22,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 09:13:22,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 09:13:22,124 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 09:13:22,137 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 09:13:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:22,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 2881 conjuncts, 130 conjunts are in the unsatisfiable core [2023-11-23 09:13:22,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 09:13:23,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-23 09:13:24,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 09:13:24,026 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 23 treesize of output 11 [2023-11-23 09:13:24,091 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 21 treesize of output 20 [2023-11-23 09:13:24,747 INFO L349 Elim1Store]: treesize reduction 93, result has 11.4 percent of original size [2023-11-23 09:13:24,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 15 case distinctions, treesize of input 162 treesize of output 107 [2023-11-23 09:13:24,815 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-23 09:13:24,815 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 09:13:26,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034992745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 09:13:26,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 09:13:26,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 39] total 74 [2023-11-23 09:13:26,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733947194] [2023-11-23 09:13:26,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 09:13:26,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-11-23 09:13:26,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 09:13:26,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-11-23 09:13:26,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=6570, Unknown=0, NotChecked=0, Total=6806 [2023-11-23 09:13:26,175 INFO L87 Difference]: Start difference. First operand 125 states and 149 transitions. Second operand has 74 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 50 states have internal predecessors, (98), 18 states have call successors, (46), 10 states have call predecessors, (46), 18 states have return successors, (43), 25 states have call predecessors, (43), 16 states have call successors, (43) [2023-11-23 09:13:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 09:13:36,863 INFO L93 Difference]: Finished difference Result 198 states and 234 transitions. [2023-11-23 09:13:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-23 09:13:36,864 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 50 states have internal predecessors, (98), 18 states have call successors, (46), 10 states have call predecessors, (46), 18 states have return successors, (43), 25 states have call predecessors, (43), 16 states have call successors, (43) Word has length 119 [2023-11-23 09:13:36,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 09:13:36,865 INFO L225 Difference]: With dead ends: 198 [2023-11-23 09:13:36,865 INFO L226 Difference]: Without dead ends: 196 [2023-11-23 09:13:36,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 132 SyntacticMatches, 2 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4067 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1044, Invalid=18416, Unknown=0, NotChecked=0, Total=19460 [2023-11-23 09:13:36,870 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 353 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 7257 mSolverCounterSat, 323 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 7585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 7257 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-23 09:13:36,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1805 Invalid, 7585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 7257 Invalid, 5 Unknown, 0 Unchecked, 7.3s Time] [2023-11-23 09:13:36,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-23 09:13:36,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 177. [2023-11-23 09:13:36,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 105 states have (on average 1.161904761904762) internal successors, (122), 110 states have internal predecessors, (122), 44 states have call successors, (44), 22 states have call predecessors, (44), 27 states have return successors, (47), 44 states have call predecessors, (47), 42 states have call successors, (47) [2023-11-23 09:13:36,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 213 transitions. [2023-11-23 09:13:36,929 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 213 transitions. Word has length 119 [2023-11-23 09:13:36,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 09:13:36,929 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 213 transitions. [2023-11-23 09:13:36,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 50 states have internal predecessors, (98), 18 states have call successors, (46), 10 states have call predecessors, (46), 18 states have return successors, (43), 25 states have call predecessors, (43), 16 states have call successors, (43) [2023-11-23 09:13:36,930 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 213 transitions. [2023-11-23 09:13:36,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 09:13:36,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 09:13:36,933 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 09:13:36,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 09:13:37,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 09:13:37,156 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 09:13:37,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 09:13:37,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1106553719, now seen corresponding path program 2 times [2023-11-23 09:13:37,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 09:13:37,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652579652] [2023-11-23 09:13:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 09:13:37,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 09:13:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 09:13:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:42,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-23 09:13:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 09:13:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 09:13:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-23 09:13:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 09:13:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 09:13:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 09:13:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 09:13:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 09:13:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 09:13:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:42,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 09:13:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 09:13:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:43,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-23 09:13:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 09:13:43,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 09:13:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15