./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_hash_string_harness.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_hash_string_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 2359aa88e8e7d743df9393581b2f3fdb25ac15a45b4f8f680bad72fb64c83223 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:17:20,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:17:20,834 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:17:20,837 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:17:20,838 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:17:20,852 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:17:20,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:17:20,853 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:17:20,854 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:17:20,854 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:17:20,854 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:17:20,855 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:17:20,855 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:17:20,855 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:17:20,856 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:17:20,857 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:17:20,858 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:17:20,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:17:20,860 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:17:20,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:17:20,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:17:20,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:17:20,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:17:20,862 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:17:20,862 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:17:20,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:17:20,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:17:20,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:17:20,863 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:17:20,864 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:17:20,864 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:17:20,864 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:17:20,864 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:17:20,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:17:20,865 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:17:20,865 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:17:20,865 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:17:20,865 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:17:20,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:17:20,866 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2359aa88e8e7d743df9393581b2f3fdb25ac15a45b4f8f680bad72fb64c83223 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:17:21,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:17:21,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:17:21,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:17:21,043 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:17:21,044 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:17:21,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_hash_string_harness.i [2023-11-23 07:17:22,201 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:17:22,633 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:17:22,634 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_hash_string_harness.i [2023-11-23 07:17:22,665 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7b58975/9f4489833c774b2a86b652616aeddfae/FLAGd153f2525 [2023-11-23 07:17:22,682 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a7b58975/9f4489833c774b2a86b652616aeddfae [2023-11-23 07:17:22,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:17:22,687 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:17:22,690 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:17:22,690 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:17:22,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:17:22,696 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:17:22" (1/1) ... [2023-11-23 07:17:22,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aabe85a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:22, skipping insertion in model container [2023-11-23 07:17:22,697 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:17:22" (1/1) ... [2023-11-23 07:17:22,789 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:17:22,972 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_hash_string_harness.i[4489,4502] [2023-11-23 07:17:22,979 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_hash_string_harness.i[4549,4562] [2023-11-23 07:17:23,632 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,635 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,637 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,637 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,639 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,650 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,651 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,653 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,654 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,657 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,658 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,659 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,659 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:23,914 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:17:23,915 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:17:23,916 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:17:23,916 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:17:23,917 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:17:23,917 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:17:23,918 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:17:23,918 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:17:23,919 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:17:23,919 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:17:24,239 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,240 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,262 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,265 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,270 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,271 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,285 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,288 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,289 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,289 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,289 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,323 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:17:24,361 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:17:24,377 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_hash_string_harness.i[4489,4502] [2023-11-23 07:17:24,378 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_hash_string_harness.i[4549,4562] [2023-11-23 07:17:24,442 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,444 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,444 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,445 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,445 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,451 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,452 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,453 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,453 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,454 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,454 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,455 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,455 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,483 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:17:24,484 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:17:24,485 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:17:24,485 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:17:24,486 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:17:24,486 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:17:24,486 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:17:24,487 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:17:24,487 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:17:24,488 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:17:24,549 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7558-7569] [2023-11-23 07:17:24,621 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,622 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,631 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,632 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,634 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,634 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,639 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,639 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,640 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,640 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,640 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,640 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,641 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:17:24,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:17:24,847 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,847 WARN L675 CHandler]: The function equals_fn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,847 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,847 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,847 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,847 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,847 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,848 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,848 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,848 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,848 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,848 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,848 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,848 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,848 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,848 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,849 WARN L675 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,849 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,849 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:17:24,855 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:17:24,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24 WrapperNode [2023-11-23 07:17:24,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:17:24,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:17:24,856 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:17:24,856 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:17:24,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (1/1) ... [2023-11-23 07:17:24,935 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (1/1) ... [2023-11-23 07:17:24,984 INFO L138 Inliner]: procedures = 772, calls = 2484, calls flagged for inlining = 67, calls inlined = 5, statements flattened = 533 [2023-11-23 07:17:24,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:17:24,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:17:24,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:17:24,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:17:24,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (1/1) ... [2023-11-23 07:17:24,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (1/1) ... [2023-11-23 07:17:25,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (1/1) ... [2023-11-23 07:17:25,038 INFO L188 MemorySlicer]: Split 354 memory accesses to 8 slices as follows [2, 236, 3, 7, 7, 5, 91, 3]. 67 percent of accesses are in the largest equivalence class. The 248 initializations are split as follows [2, 236, 0, 1, 1, 5, 0, 3]. The 12 writes are split as follows [0, 0, 1, 4, 4, 0, 3, 0]. [2023-11-23 07:17:25,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (1/1) ... [2023-11-23 07:17:25,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (1/1) ... [2023-11-23 07:17:25,059 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (1/1) ... [2023-11-23 07:17:25,064 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (1/1) ... [2023-11-23 07:17:25,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (1/1) ... [2023-11-23 07:17:25,079 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (1/1) ... [2023-11-23 07:17:25,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:17:25,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:17:25,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:17:25,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:17:25,091 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (1/1) ... [2023-11-23 07:17:25,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:17:25,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:25,161 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 07:17:25,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 07:17:25,265 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2023-11-23 07:17:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2023-11-23 07:17:25,265 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_string_is_allocated_bounded_length [2023-11-23 07:17:25,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_string_is_allocated_bounded_length [2023-11-23 07:17:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 07:17:25,266 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 07:17:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 07:17:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 07:17:25,266 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 07:17:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 07:17:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 07:17:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 07:17:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 07:17:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 07:17:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:17:25,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:17:25,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:17:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:17:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:17:25,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:17:25,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:17:25,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:17:25,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:17:25,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 07:17:25,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 07:17:25,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 07:17:25,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:17:25,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:17:25,269 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 07:17:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 07:17:25,270 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_bytes [2023-11-23 07:17:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_bytes [2023-11-23 07:17:25,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:17:25,270 INFO L130 BoogieDeclarations]: Found specification of procedure hashlittle2 [2023-11-23 07:17:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure hashlittle2 [2023-11-23 07:17:25,270 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 07:17:25,270 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 07:17:25,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 07:17:25,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 07:17:25,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 07:17:25,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 07:17:25,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 07:17:25,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 07:17:25,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 07:17:25,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 07:17:25,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:17:25,272 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:17:25,272 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:17:25,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:17:25,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:17:25,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:17:25,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:17:25,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:17:25,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 07:17:25,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 07:17:25,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 07:17:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 07:17:25,276 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 07:17:25,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:17:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:17:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:17:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:17:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:17:25,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 07:17:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 07:17:25,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 07:17:25,591 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:17:25,593 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:17:26,369 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2023-11-23 07:17:26,371 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:17:26,422 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:17:26,422 INFO L309 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-23 07:17:26,423 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:17:26 BoogieIcfgContainer [2023-11-23 07:17:26,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:17:26,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:17:26,424 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:17:26,426 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:17:26,426 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:17:22" (1/3) ... [2023-11-23 07:17:26,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a38212d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:17:26, skipping insertion in model container [2023-11-23 07:17:26,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:17:24" (2/3) ... [2023-11-23 07:17:26,427 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a38212d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:17:26, skipping insertion in model container [2023-11-23 07:17:26,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:17:26" (3/3) ... [2023-11-23 07:17:26,428 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_string_harness.i [2023-11-23 07:17:26,440 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:17:26,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:17:26,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:17:26,480 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;@6cf893de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:17:26,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:17:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 264 states have (on average 1.6893939393939394) internal successors, (446), 264 states have internal predecessors, (446), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 07:17:26,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 07:17:26,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:26,501 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:26,501 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:26,508 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:26,508 INFO L85 PathProgramCache]: Analyzing trace with hash -106726573, now seen corresponding path program 1 times [2023-11-23 07:17:26,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:26,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880399611] [2023-11-23 07:17:26,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:26,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:27,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:27,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:27,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:17:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:17:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:17:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 07:17:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:17:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:17:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:17:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:17:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 07:17:28,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:28,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880399611] [2023-11-23 07:17:28,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880399611] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:28,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582272469] [2023-11-23 07:17:28,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:28,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:28,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:28,274 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:17:28,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 07:17:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:28,704 INFO L262 TraceCheckSpWp]: Trace formula consists of 2248 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 07:17:28,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-23 07:17:28,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:17:28,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582272469] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:17:28,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:17:28,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [14] total 14 [2023-11-23 07:17:28,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566842549] [2023-11-23 07:17:28,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:17:28,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 07:17:28,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:17:28,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 07:17:28,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:17:28,781 INFO L87 Difference]: Start difference. First operand has 290 states, 264 states have (on average 1.6893939393939394) internal successors, (446), 264 states have internal predecessors, (446), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 07:17:28,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:28,878 INFO L93 Difference]: Finished difference Result 572 states and 951 transitions. [2023-11-23 07:17:28,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 07:17:28,880 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 93 [2023-11-23 07:17:28,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:28,897 INFO L225 Difference]: With dead ends: 572 [2023-11-23 07:17:28,897 INFO L226 Difference]: Without dead ends: 282 [2023-11-23 07:17:28,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-23 07:17:28,903 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:28,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 461 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:17:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-23 07:17:28,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2023-11-23 07:17:28,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 257 states have (on average 1.6770428015564203) internal successors, (431), 257 states have internal predecessors, (431), 15 states have call successors, (15), 10 states have call predecessors, (15), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 07:17:28,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 460 transitions. [2023-11-23 07:17:28,962 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 460 transitions. Word has length 93 [2023-11-23 07:17:28,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:28,963 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 460 transitions. [2023-11-23 07:17:28,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 07:17:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 460 transitions. [2023-11-23 07:17:28,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 07:17:28,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:28,966 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:28,986 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 07:17:29,184 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,SelfDestructingSolverStorable0 [2023-11-23 07:17:29,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:29,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash 938865831, now seen corresponding path program 1 times [2023-11-23 07:17:29,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:29,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908390448] [2023-11-23 07:17:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:29,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:17:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:17:30,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:17:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 07:17:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:17:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:30,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:17:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:17:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:17:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 07:17:30,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:30,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908390448] [2023-11-23 07:17:30,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908390448] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:30,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031146805] [2023-11-23 07:17:30,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:30,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:30,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:30,201 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:17:30,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 07:17:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:30,648 INFO L262 TraceCheckSpWp]: Trace formula consists of 2248 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 07:17:30,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 07:17:30,857 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:17:30,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031146805] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:17:30,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:17:30,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2023-11-23 07:17:30,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247060838] [2023-11-23 07:17:30,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:17:30,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 07:17:30,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:17:30,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 07:17:30,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2023-11-23 07:17:30,860 INFO L87 Difference]: Start difference. First operand 282 states and 460 transitions. Second operand has 12 states, 9 states have (on average 6.111111111111111) internal successors, (55), 10 states have internal predecessors, (55), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 07:17:31,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:31,066 INFO L93 Difference]: Finished difference Result 542 states and 897 transitions. [2023-11-23 07:17:31,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:17:31,067 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 6.111111111111111) internal successors, (55), 10 states have internal predecessors, (55), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 93 [2023-11-23 07:17:31,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:31,070 INFO L225 Difference]: With dead ends: 542 [2023-11-23 07:17:31,070 INFO L226 Difference]: Without dead ends: 287 [2023-11-23 07:17:31,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2023-11-23 07:17:31,072 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 18 mSDsluCounter, 3951 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 4393 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:31,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 4393 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:17:31,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-11-23 07:17:31,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 286. [2023-11-23 07:17:31,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 260 states have (on average 1.6730769230769231) internal successors, (435), 261 states have internal predecessors, (435), 15 states have call successors, (15), 10 states have call predecessors, (15), 10 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2023-11-23 07:17:31,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 466 transitions. [2023-11-23 07:17:31,082 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 466 transitions. Word has length 93 [2023-11-23 07:17:31,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:31,082 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 466 transitions. [2023-11-23 07:17:31,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 6.111111111111111) internal successors, (55), 10 states have internal predecessors, (55), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 07:17:31,083 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 466 transitions. [2023-11-23 07:17:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 07:17:31,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:31,085 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:31,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:17:31,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 07:17:31,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:31,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:31,297 INFO L85 PathProgramCache]: Analyzing trace with hash 378166053, now seen corresponding path program 1 times [2023-11-23 07:17:31,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:31,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573002155] [2023-11-23 07:17:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:31,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:17:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:17:32,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:17:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 07:17:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:17:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:17:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:17:32,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:17:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,603 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 07:17:32,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:32,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573002155] [2023-11-23 07:17:32,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573002155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:32,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314660666] [2023-11-23 07:17:32,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:32,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:32,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:32,605 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:17:32,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 07:17:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:32,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 2253 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-23 07:17:33,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:33,333 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 07:17:33,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:17:33,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314660666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:17:33,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:17:33,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [20] total 33 [2023-11-23 07:17:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704974707] [2023-11-23 07:17:33,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:17:33,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 07:17:33,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:17:33,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 07:17:33,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=979, Unknown=0, NotChecked=0, Total=1056 [2023-11-23 07:17:33,336 INFO L87 Difference]: Start difference. First operand 286 states and 466 transitions. Second operand has 15 states, 11 states have (on average 5.181818181818182) internal successors, (57), 13 states have internal predecessors, (57), 7 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-23 07:17:33,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:17:33,619 INFO L93 Difference]: Finished difference Result 537 states and 891 transitions. [2023-11-23 07:17:33,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 07:17:33,619 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 5.181818181818182) internal successors, (57), 13 states have internal predecessors, (57), 7 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 93 [2023-11-23 07:17:33,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:17:33,621 INFO L225 Difference]: With dead ends: 537 [2023-11-23 07:17:33,621 INFO L226 Difference]: Without dead ends: 285 [2023-11-23 07:17:33,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 07:17:33,623 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 22 mSDsluCounter, 5247 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5687 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:17:33,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5687 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 07:17:33,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-23 07:17:33,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2023-11-23 07:17:33,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 259 states have (on average 1.6718146718146718) internal successors, (433), 259 states have internal predecessors, (433), 15 states have call successors, (15), 10 states have call predecessors, (15), 9 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 07:17:33,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 462 transitions. [2023-11-23 07:17:33,631 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 462 transitions. Word has length 93 [2023-11-23 07:17:33,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:17:33,632 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 462 transitions. [2023-11-23 07:17:33,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 5.181818181818182) internal successors, (57), 13 states have internal predecessors, (57), 7 states have call successors, (14), 2 states have call predecessors, (14), 6 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-23 07:17:33,632 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 462 transitions. [2023-11-23 07:17:33,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 07:17:33,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:17:33,634 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:17:33,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:17:33,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:33,849 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:17:33,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:17:33,849 INFO L85 PathProgramCache]: Analyzing trace with hash 652546533, now seen corresponding path program 1 times [2023-11-23 07:17:33,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:17:33,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729025630] [2023-11-23 07:17:33,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:33,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:17:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:17:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:17:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:17:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:17:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 07:17:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:17:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:17:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:17:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:17:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:17:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 07:17:38,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:17:38,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729025630] [2023-11-23 07:17:38,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729025630] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:17:38,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958526157] [2023-11-23 07:17:38,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:17:38,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:17:38,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:17:38,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:17:38,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 07:17:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:17:38,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 2263 conjuncts, 147 conjunts are in the unsatisfiable core [2023-11-23 07:17:38,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:17:38,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 47 [2023-11-23 07:17:38,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:17:38,655 INFO L349 Elim1Store]: treesize reduction 11, result has 54.2 percent of original size [2023-11-23 07:17:38,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 82 [2023-11-23 07:17:38,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:17:38,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 07:17:38,689 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 07:17:38,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 9 [2023-11-23 07:17:58,958 INFO L349 Elim1Store]: treesize reduction 9, result has 47.1 percent of original size [2023-11-23 07:17:58,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 49 [2023-11-23 07:17:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 38 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 07:17:59,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:18:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 07:18:05,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958526157] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:18:05,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:18:05,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 44, 23] total 87 [2023-11-23 07:18:05,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164219117] [2023-11-23 07:18:05,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:18:05,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2023-11-23 07:18:05,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:18:05,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2023-11-23 07:18:05,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=7114, Unknown=2, NotChecked=0, Total=7482 [2023-11-23 07:18:05,976 INFO L87 Difference]: Start difference. First operand 284 states and 462 transitions. Second operand has 87 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 64 states have internal predecessors, (159), 21 states have call successors, (34), 10 states have call predecessors, (34), 20 states have return successors, (34), 23 states have call predecessors, (34), 19 states have call successors, (34) [2023-11-23 07:18:15,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:19,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:41,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:18:43,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:18:45,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:18:47,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:18:53,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:55,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:18:58,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:19:00,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:19:02,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:19:04,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:19:31,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:19:36,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:33,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:38,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:40,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:48,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:20:50,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:20:54,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-23 07:20:57,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:20:58,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:21:03,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:21:05,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:21:11,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:21:11,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:21:11,507 INFO L93 Difference]: Finished difference Result 571 states and 918 transitions. [2023-11-23 07:21:11,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-11-23 07:21:11,508 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 64 states have internal predecessors, (159), 21 states have call successors, (34), 10 states have call predecessors, (34), 20 states have return successors, (34), 23 states have call predecessors, (34), 19 states have call successors, (34) Word has length 93 [2023-11-23 07:21:11,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:21:11,511 INFO L225 Difference]: With dead ends: 571 [2023-11-23 07:21:11,511 INFO L226 Difference]: Without dead ends: 555 [2023-11-23 07:21:11,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 154 SyntacticMatches, 5 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5781 ImplicationChecksByTransitivity, 134.4s TimeCoverageRelationStatistics Valid=1320, Invalid=19824, Unknown=26, NotChecked=0, Total=21170 [2023-11-23 07:21:11,517 INFO L413 NwaCegarLoop]: 671 mSDtfsCounter, 4125 mSDsluCounter, 32704 mSDsCounter, 0 mSdLazyCounter, 9752 mSolverCounterSat, 160 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4130 SdHoareTripleChecker+Valid, 33375 SdHoareTripleChecker+Invalid, 9931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 9752 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.8s IncrementalHoareTripleChecker+Time [2023-11-23 07:21:11,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4130 Valid, 33375 Invalid, 9931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [160 Valid, 9752 Invalid, 19 Unknown, 0 Unchecked, 70.8s Time] [2023-11-23 07:21:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-11-23 07:21:11,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 309. [2023-11-23 07:21:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 278 states have (on average 1.6330935251798562) internal successors, (454), 279 states have internal predecessors, (454), 16 states have call successors, (16), 14 states have call predecessors, (16), 14 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-23 07:21:11,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 486 transitions. [2023-11-23 07:21:11,559 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 486 transitions. Word has length 93 [2023-11-23 07:21:11,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:21:11,560 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 486 transitions. [2023-11-23 07:21:11,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 63 states have (on average 2.5238095238095237) internal successors, (159), 64 states have internal predecessors, (159), 21 states have call successors, (34), 10 states have call predecessors, (34), 20 states have return successors, (34), 23 states have call predecessors, (34), 19 states have call successors, (34) [2023-11-23 07:21:11,560 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 486 transitions. [2023-11-23 07:21:11,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 07:21:11,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:21:11,564 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:21:11,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 07:21:11,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:21:11,765 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:21:11,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:21:11,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1187355031, now seen corresponding path program 1 times [2023-11-23 07:21:11,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:21:11,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221789929] [2023-11-23 07:21:11,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:21:11,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:21:11,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:21:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:21:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:21:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:21:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:21:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:21:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:21:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 07:21:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:21:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:21:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:21:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:21:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:21:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 07:21:12,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:21:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221789929] [2023-11-23 07:21:12,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221789929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:21:12,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568365776] [2023-11-23 07:21:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:21:12,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:21:12,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:21:12,717 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:21:12,740 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 07:21:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:13,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 2255 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-23 07:21:13,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:21:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 07:21:13,201 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:21:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 07:21:13,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568365776] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 07:21:13,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 07:21:13,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 17 [2023-11-23 07:21:13,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33288938] [2023-11-23 07:21:13,336 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 07:21:13,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 07:21:13,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:21:13,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 07:21:13,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:21:13,338 INFO L87 Difference]: Start difference. First operand 309 states and 486 transitions. Second operand has 17 states, 14 states have (on average 4.428571428571429) internal successors, (62), 12 states have internal predecessors, (62), 6 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-23 07:21:14,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:21:14,532 INFO L93 Difference]: Finished difference Result 331 states and 510 transitions. [2023-11-23 07:21:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 07:21:14,533 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 4.428571428571429) internal successors, (62), 12 states have internal predecessors, (62), 6 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) Word has length 93 [2023-11-23 07:21:14,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:21:14,535 INFO L225 Difference]: With dead ends: 331 [2023-11-23 07:21:14,536 INFO L226 Difference]: Without dead ends: 309 [2023-11-23 07:21:14,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2023-11-23 07:21:14,537 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 68 mSDsluCounter, 5433 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 5859 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:21:14,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 5859 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:21:14,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-23 07:21:14,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2023-11-23 07:21:14,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 276 states have (on average 1.6340579710144927) internal successors, (451), 277 states have internal predecessors, (451), 16 states have call successors, (16), 14 states have call predecessors, (16), 14 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-23 07:21:14,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 483 transitions. [2023-11-23 07:21:14,583 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 483 transitions. Word has length 93 [2023-11-23 07:21:14,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:21:14,583 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 483 transitions. [2023-11-23 07:21:14,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 4.428571428571429) internal successors, (62), 12 states have internal predecessors, (62), 6 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (13), 7 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-23 07:21:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 483 transitions. [2023-11-23 07:21:14,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 07:21:14,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:21:14,585 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 07:21:14,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 07:21:14,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:21:14,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:21:14,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:21:14,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1334919405, now seen corresponding path program 2 times [2023-11-23 07:21:14,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:21:14,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118731187] [2023-11-23 07:21:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:21:14,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:21:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:21:15,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:21:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:21:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 07:21:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:21:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 07:21:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-23 07:21:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 07:21:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 07:21:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:21:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-23 07:21:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 07:21:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:21:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:21:15,495 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-23 07:21:15,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:21:15,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118731187] [2023-11-23 07:21:15,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118731187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:21:15,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506545881] [2023-11-23 07:21:15,495 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 07:21:15,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:21:15,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:21:15,496 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:21:15,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 07:21:15,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 07:21:15,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 07:21:15,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-23 07:21:15,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:21:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 07:21:15,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:21:15,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506545881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:21:15,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:21:15,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 12 [2023-11-23 07:21:15,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091737414] [2023-11-23 07:21:15,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:21:15,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:21:15,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:21:15,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:21:15,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:21:15,925 INFO L87 Difference]: Start difference. First operand 307 states and 483 transitions. Second operand has 10 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 07:21:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:21:16,013 INFO L93 Difference]: Finished difference Result 307 states and 483 transitions. [2023-11-23 07:21:16,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:21:16,014 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 93 [2023-11-23 07:21:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:21:16,014 INFO L225 Difference]: With dead ends: 307 [2023-11-23 07:21:16,014 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 07:21:16,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:21:16,015 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 4 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:21:16,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 218 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:21:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 07:21:16,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 07:21:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 07:21:16,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 07:21:16,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 93 [2023-11-23 07:21:16,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:21:16,016 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 07:21:16,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 8.142857142857142) internal successors, (57), 8 states have internal predecessors, (57), 4 states have call successors, (14), 2 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 07:21:16,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 07:21:16,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 07:21:16,018 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 07:21:16,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-23 07:21:16,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:21:16,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 07:21:38,674 WARN L293 SmtUtils]: Spent 7.89s on a formula simplification. DAG size of input: 199 DAG size of output: 77 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2023-11-23 07:21:47,588 WARN L293 SmtUtils]: Spent 8.91s on a formula simplification. DAG size of input: 199 DAG size of output: 77 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) Killed by 15