./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_harness.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_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 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:04:17,658 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:04:17,720 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:04:17,724 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:04:17,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:04:17,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:04:17,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:04:17,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:04:17,747 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:04:17,750 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:04:17,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:04:17,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:04:17,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:04:17,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:04:17,752 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:04:17,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:04:17,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:04:17,753 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:04:17,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:04:17,753 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:04:17,754 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:04:17,754 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:04:17,754 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:04:17,754 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:04:17,755 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:04:17,755 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:04:17,755 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:04:17,755 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:04:17,755 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:04:17,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:04:17,756 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:04:17,757 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:04:17,757 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:04:17,757 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:04:17,757 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:04:17,757 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:04:17,757 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:04:17,758 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:04:17,758 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:04:17,758 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 156ab79a85c4b985ced0d661dede185c573e9f8e4fcba49b00d62d883c71bbed Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:04:17,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:04:17,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:04:17,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:04:17,986 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:04:17,986 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:04:17,987 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_harness.i [2023-11-23 08:04:19,017 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:04:19,377 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:04:19,377 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_harness.i [2023-11-23 08:04:19,407 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/253ed7ff5/c08f4a388be24b738ae6a18bba5b7eb1/FLAG16b3f742e [2023-11-23 08:04:19,419 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/253ed7ff5/c08f4a388be24b738ae6a18bba5b7eb1 [2023-11-23 08:04:19,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:04:19,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:04:19,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:04:19,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:04:19,429 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:04:19,430 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:04:19" (1/1) ... [2023-11-23 08:04:19,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b94b5cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:19, skipping insertion in model container [2023-11-23 08:04:19,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:04:19" (1/1) ... [2023-11-23 08:04:19,553 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:04:19,742 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_array_list_set_at_harness.i[4495,4508] [2023-11-23 08:04:19,752 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_array_list_set_at_harness.i[4555,4568] [2023-11-23 08:04:20,192 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,193 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,194 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,196 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,197 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,204 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,205 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,206 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,206 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,208 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,208 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,209 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,209 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,411 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:04:20,414 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:04:20,416 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:04:20,417 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:04:20,423 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:04:20,424 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:04:20,424 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:04:20,425 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:04:20,427 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:04:20,428 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:04:20,535 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,545 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,594 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,594 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,595 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:04:20,636 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:04:20,655 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_array_list_set_at_harness.i[4495,4508] [2023-11-23 08:04:20,655 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_array_list_set_at_harness.i[4555,4568] [2023-11-23 08:04:20,685 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,686 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,686 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,686 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,687 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,690 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,690 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,692 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,693 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,693 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,694 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,695 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,695 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,716 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:04:20,716 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:04:20,717 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:04:20,717 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:04:20,718 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:04:20,718 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:04:20,718 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:04:20,719 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:04:20,719 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:04:20,719 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:04:20,757 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,760 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,763 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7770-7781] [2023-11-23 08:04:20,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,821 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:04:20,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:04:20,919 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,919 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,919 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,919 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,919 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,919 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,919 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,920 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,920 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,920 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,920 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,920 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,920 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,920 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,920 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:04:20,926 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:04:20,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20 WrapperNode [2023-11-23 08:04:20,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:04:20,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:04:20,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:04:20,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:04:20,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20" (1/1) ... [2023-11-23 08:04:20,980 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20" (1/1) ... [2023-11-23 08:04:21,065 INFO L138 Inliner]: procedures = 690, calls = 1682, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 850 [2023-11-23 08:04:21,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:04:21,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:04:21,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:04:21,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:04:21,073 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20" (1/1) ... [2023-11-23 08:04:21,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20" (1/1) ... [2023-11-23 08:04:21,080 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20" (1/1) ... [2023-11-23 08:04:21,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20" (1/1) ... [2023-11-23 08:04:21,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20" (1/1) ... [2023-11-23 08:04:21,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20" (1/1) ... [2023-11-23 08:04:21,124 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20" (1/1) ... [2023-11-23 08:04:21,140 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20" (1/1) ... [2023-11-23 08:04:21,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:04:21,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:04:21,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:04:21,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:04:21,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20" (1/1) ... [2023-11-23 08:04:21,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:04:21,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:21,191 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 08:04:21,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 08:04:21,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:04:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 08:04:21,237 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 08:04:21,237 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 08:04:21,238 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 08:04:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:04:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:04:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 08:04:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 08:04:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:04:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:04:21,239 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:04:21,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:04:21,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:04:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:04:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:04:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:04:21,240 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 08:04:21,241 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 08:04:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:04:21,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:04:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:04:21,241 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:04:21,241 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 08:04:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 08:04:21,242 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 08:04:21,242 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 08:04:21,242 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 08:04:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 08:04:21,243 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 08:04:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 08:04:21,243 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 08:04:21,243 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 08:04:21,243 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:04:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:04:21,244 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 08:04:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 08:04:21,244 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-23 08:04:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-23 08:04:21,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:04:21,244 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 08:04:21,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 08:04:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:04:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:04:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:04:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:04:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 08:04:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 08:04:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 08:04:21,245 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 08:04:21,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:04:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 08:04:21,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 08:04:21,246 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2023-11-23 08:04:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2023-11-23 08:04:21,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:04:21,506 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:04:21,509 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:04:22,215 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:04:22,298 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:04:22,298 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 08:04:22,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:22 BoogieIcfgContainer [2023-11-23 08:04:22,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:04:22,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:04:22,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:04:22,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:04:22,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:04:19" (1/3) ... [2023-11-23 08:04:22,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bebaba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:04:22, skipping insertion in model container [2023-11-23 08:04:22,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:04:20" (2/3) ... [2023-11-23 08:04:22,306 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bebaba0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:04:22, skipping insertion in model container [2023-11-23 08:04:22,306 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:04:22" (3/3) ... [2023-11-23 08:04:22,307 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness.i [2023-11-23 08:04:22,321 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:04:22,321 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:04:22,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:04:22,370 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;@7bea84a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:04:22,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:04:22,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 260 states, 143 states have (on average 1.2517482517482517) internal successors, (179), 144 states have internal predecessors, (179), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2023-11-23 08:04:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 08:04:22,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:22,395 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:22,396 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:22,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:22,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1196859876, now seen corresponding path program 1 times [2023-11-23 08:04:22,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:22,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825812135] [2023-11-23 08:04:22,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:22,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:04:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 08:04:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 08:04:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:04:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:04:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 08:04:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:04:23,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 08:04:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 08:04:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 08:04:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:04:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 08:04:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 08:04:23,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 08:04:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:04:23,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 08:04:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 08:04:23,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 08:04:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:04:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 08:04:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 08:04:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 08:04:23,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:04:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 08:04:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2023-11-23 08:04:23,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:23,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825812135] [2023-11-23 08:04:23,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825812135] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:04:23,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061211232] [2023-11-23 08:04:23,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:23,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:23,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:23,350 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:23,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 08:04:23,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:23,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 2418 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 08:04:23,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:23,874 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2023-11-23 08:04:23,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:23,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061211232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:23,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:04:23,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 08:04:23,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132487938] [2023-11-23 08:04:23,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:23,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:04:23,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:23,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:04:23,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:04:23,902 INFO L87 Difference]: Start difference. First operand has 260 states, 143 states have (on average 1.2517482517482517) internal successors, (179), 144 states have internal predecessors, (179), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-23 08:04:24,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:24,254 INFO L93 Difference]: Finished difference Result 517 states and 800 transitions. [2023-11-23 08:04:24,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:04:24,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 139 [2023-11-23 08:04:24,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:24,270 INFO L225 Difference]: With dead ends: 517 [2023-11-23 08:04:24,271 INFO L226 Difference]: Without dead ends: 260 [2023-11-23 08:04:24,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:04:24,283 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 43 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:24,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 1162 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:04:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-23 08:04:24,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-11-23 08:04:24,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 143 states have (on average 1.2377622377622377) internal successors, (177), 145 states have internal predecessors, (177), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2023-11-23 08:04:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 378 transitions. [2023-11-23 08:04:24,345 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 378 transitions. Word has length 139 [2023-11-23 08:04:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:24,346 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 378 transitions. [2023-11-23 08:04:24,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2023-11-23 08:04:24,346 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 378 transitions. [2023-11-23 08:04:24,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 08:04:24,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:24,355 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:24,373 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 08:04:24,568 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 08:04:24,569 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:24,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:24,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1834644650, now seen corresponding path program 1 times [2023-11-23 08:04:24,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:24,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401391616] [2023-11-23 08:04:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:24,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:24,648 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:24,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478508164] [2023-11-23 08:04:24,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:24,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:24,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:24,651 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:24,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 08:04:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:25,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 2686 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:04:25,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-23 08:04:25,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:25,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:25,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401391616] [2023-11-23 08:04:25,152 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:25,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478508164] [2023-11-23 08:04:25,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478508164] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:25,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:25,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:04:25,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579421242] [2023-11-23 08:04:25,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:25,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:04:25,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:25,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:04:25,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:04:25,157 INFO L87 Difference]: Start difference. First operand 260 states and 378 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 08:04:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:25,339 INFO L93 Difference]: Finished difference Result 501 states and 750 transitions. [2023-11-23 08:04:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:04:25,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 165 [2023-11-23 08:04:25,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:25,344 INFO L225 Difference]: With dead ends: 501 [2023-11-23 08:04:25,345 INFO L226 Difference]: Without dead ends: 265 [2023-11-23 08:04:25,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:04:25,350 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 10 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:25,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1019 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:04:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-23 08:04:25,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 262. [2023-11-23 08:04:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 145 states have (on average 1.2344827586206897) internal successors, (179), 147 states have internal predecessors, (179), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (108), 92 states have call predecessors, (108), 92 states have call successors, (108) [2023-11-23 08:04:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 380 transitions. [2023-11-23 08:04:25,386 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 380 transitions. Word has length 165 [2023-11-23 08:04:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:25,388 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 380 transitions. [2023-11-23 08:04:25,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 08:04:25,388 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 380 transitions. [2023-11-23 08:04:25,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 08:04:25,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:25,393 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:25,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 08:04:25,609 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 08:04:25,609 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:25,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash -257636586, now seen corresponding path program 1 times [2023-11-23 08:04:25,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:25,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157506543] [2023-11-23 08:04:25,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:25,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:25,674 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:25,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980144409] [2023-11-23 08:04:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:25,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:25,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:25,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:25,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 08:04:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:26,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:04:26,113 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-23 08:04:26,171 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:26,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:26,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157506543] [2023-11-23 08:04:26,171 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:26,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980144409] [2023-11-23 08:04:26,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980144409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:26,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:26,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:04:26,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577674416] [2023-11-23 08:04:26,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:26,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:04:26,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:26,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:04:26,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:04:26,175 INFO L87 Difference]: Start difference. First operand 262 states and 380 transitions. Second operand has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-23 08:04:26,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:26,607 INFO L93 Difference]: Finished difference Result 479 states and 693 transitions. [2023-11-23 08:04:26,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:04:26,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 165 [2023-11-23 08:04:26,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:26,609 INFO L225 Difference]: With dead ends: 479 [2023-11-23 08:04:26,609 INFO L226 Difference]: Without dead ends: 262 [2023-11-23 08:04:26,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:04:26,610 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 147 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:26,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1591 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:04:26,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-11-23 08:04:26,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2023-11-23 08:04:26,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 145 states have (on average 1.2344827586206897) internal successors, (179), 147 states have internal predecessors, (179), 93 states have call successors, (93), 22 states have call predecessors, (93), 23 states have return successors, (104), 92 states have call predecessors, (104), 92 states have call successors, (104) [2023-11-23 08:04:26,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 376 transitions. [2023-11-23 08:04:26,620 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 376 transitions. Word has length 165 [2023-11-23 08:04:26,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:26,621 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 376 transitions. [2023-11-23 08:04:26,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.333333333333334) internal successors, (62), 6 states have internal predecessors, (62), 4 states have call successors, (28), 3 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-23 08:04:26,621 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 376 transitions. [2023-11-23 08:04:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 08:04:26,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:26,622 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:26,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 08:04:26,830 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 08:04:26,830 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:26,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:26,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1984280274, now seen corresponding path program 2 times [2023-11-23 08:04:26,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:26,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362973312] [2023-11-23 08:04:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:26,878 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:26,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1352322482] [2023-11-23 08:04:26,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:04:26,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:26,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:26,880 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:26,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 08:04:27,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 08:04:27,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:04:27,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 1907 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:04:27,215 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:27,236 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-11-23 08:04:27,236 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:27,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:27,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362973312] [2023-11-23 08:04:27,237 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:27,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352322482] [2023-11-23 08:04:27,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352322482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:27,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:27,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:04:27,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787421836] [2023-11-23 08:04:27,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:27,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:04:27,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:27,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:04:27,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:04:27,239 INFO L87 Difference]: Start difference. First operand 262 states and 376 transitions. Second operand has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 08:04:27,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:27,399 INFO L93 Difference]: Finished difference Result 460 states and 650 transitions. [2023-11-23 08:04:27,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:04:27,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 178 [2023-11-23 08:04:27,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:27,402 INFO L225 Difference]: With dead ends: 460 [2023-11-23 08:04:27,402 INFO L226 Difference]: Without dead ends: 266 [2023-11-23 08:04:27,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:04:27,403 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:27,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1362 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:04:27,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-23 08:04:27,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-11-23 08:04:27,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 148 states have (on average 1.2297297297297298) internal successors, (182), 150 states have internal predecessors, (182), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (106), 93 states have call predecessors, (106), 92 states have call successors, (106) [2023-11-23 08:04:27,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 381 transitions. [2023-11-23 08:04:27,412 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 381 transitions. Word has length 178 [2023-11-23 08:04:27,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:27,412 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 381 transitions. [2023-11-23 08:04:27,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.25) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2023-11-23 08:04:27,413 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 381 transitions. [2023-11-23 08:04:27,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-23 08:04:27,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:27,414 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:27,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 08:04:27,623 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 08:04:27,623 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:27,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:27,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1056714508, now seen corresponding path program 1 times [2023-11-23 08:04:27,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:27,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153545058] [2023-11-23 08:04:27,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:27,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:27,681 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:27,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [432595493] [2023-11-23 08:04:27,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:27,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:27,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:27,682 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:27,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:04:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:28,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 2834 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:04:28,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:28,218 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2023-11-23 08:04:28,218 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:28,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:28,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153545058] [2023-11-23 08:04:28,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:28,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [432595493] [2023-11-23 08:04:28,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [432595493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:28,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:28,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:04:28,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453041877] [2023-11-23 08:04:28,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:28,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:04:28,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:28,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:04:28,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:04:28,220 INFO L87 Difference]: Start difference. First operand 266 states and 381 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-23 08:04:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:28,742 INFO L93 Difference]: Finished difference Result 481 states and 685 transitions. [2023-11-23 08:04:28,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:04:28,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 182 [2023-11-23 08:04:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:28,745 INFO L225 Difference]: With dead ends: 481 [2023-11-23 08:04:28,745 INFO L226 Difference]: Without dead ends: 266 [2023-11-23 08:04:28,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:04:28,746 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 183 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:28,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1801 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:04:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-23 08:04:28,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-11-23 08:04:28,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 148 states have (on average 1.2297297297297298) internal successors, (182), 150 states have internal predecessors, (182), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (100), 93 states have call predecessors, (100), 92 states have call successors, (100) [2023-11-23 08:04:28,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 375 transitions. [2023-11-23 08:04:28,755 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 375 transitions. Word has length 182 [2023-11-23 08:04:28,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:28,756 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 375 transitions. [2023-11-23 08:04:28,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 5 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-23 08:04:28,756 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 375 transitions. [2023-11-23 08:04:28,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-23 08:04:28,757 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:28,758 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:28,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 08:04:28,965 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 08:04:28,965 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:28,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:28,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1968417178, now seen corresponding path program 2 times [2023-11-23 08:04:28,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:28,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82389434] [2023-11-23 08:04:28,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:28,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:29,017 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:29,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939184403] [2023-11-23 08:04:29,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:04:29,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:29,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:29,019 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:29,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 08:04:29,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:04:29,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:04:29,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 2973 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 08:04:29,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:29,789 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-23 08:04:29,789 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:29,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:29,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82389434] [2023-11-23 08:04:29,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:29,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939184403] [2023-11-23 08:04:29,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939184403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:29,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:29,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 08:04:29,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388424716] [2023-11-23 08:04:29,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:29,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:04:29,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:29,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:04:29,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:04:29,792 INFO L87 Difference]: Start difference. First operand 266 states and 375 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-23 08:04:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:30,446 INFO L93 Difference]: Finished difference Result 478 states and 668 transitions. [2023-11-23 08:04:30,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:04:30,446 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) Word has length 195 [2023-11-23 08:04:30,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:30,448 INFO L225 Difference]: With dead ends: 478 [2023-11-23 08:04:30,448 INFO L226 Difference]: Without dead ends: 266 [2023-11-23 08:04:30,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:04:30,449 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 190 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:30,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 2076 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 08:04:30,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2023-11-23 08:04:30,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2023-11-23 08:04:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 148 states have (on average 1.2297297297297298) internal successors, (182), 150 states have internal predecessors, (182), 93 states have call successors, (93), 22 states have call predecessors, (93), 24 states have return successors, (96), 93 states have call predecessors, (96), 92 states have call successors, (96) [2023-11-23 08:04:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 371 transitions. [2023-11-23 08:04:30,461 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 371 transitions. Word has length 195 [2023-11-23 08:04:30,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:30,462 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 371 transitions. [2023-11-23 08:04:30,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 8 states have internal predecessors, (59), 6 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 6 states have call predecessors, (27), 5 states have call successors, (27) [2023-11-23 08:04:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 371 transitions. [2023-11-23 08:04:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-23 08:04:30,463 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:30,464 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:30,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:04:30,683 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 08:04:30,684 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:30,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:30,684 INFO L85 PathProgramCache]: Analyzing trace with hash -122332398, now seen corresponding path program 1 times [2023-11-23 08:04:30,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:30,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094004147] [2023-11-23 08:04:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:30,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:30,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:30,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031853577] [2023-11-23 08:04:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:30,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:30,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:30,766 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:30,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 08:04:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:31,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 3251 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 08:04:31,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 249 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-23 08:04:31,373 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:31,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:31,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094004147] [2023-11-23 08:04:31,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:31,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031853577] [2023-11-23 08:04:31,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031853577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:31,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:31,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 08:04:31,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846691211] [2023-11-23 08:04:31,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:31,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 08:04:31,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:31,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 08:04:31,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:04:31,375 INFO L87 Difference]: Start difference. First operand 266 states and 371 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-23 08:04:32,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:32,253 INFO L93 Difference]: Finished difference Result 609 states and 871 transitions. [2023-11-23 08:04:32,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:04:32,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 221 [2023-11-23 08:04:32,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:32,256 INFO L225 Difference]: With dead ends: 609 [2023-11-23 08:04:32,256 INFO L226 Difference]: Without dead ends: 391 [2023-11-23 08:04:32,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:04:32,258 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 132 mSDsluCounter, 2467 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:32,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2824 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:04:32,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-11-23 08:04:32,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 367. [2023-11-23 08:04:32,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 202 states have (on average 1.2376237623762376) internal successors, (250), 204 states have internal predecessors, (250), 138 states have call successors, (138), 23 states have call predecessors, (138), 26 states have return successors, (145), 139 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-23 08:04:32,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 533 transitions. [2023-11-23 08:04:32,280 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 533 transitions. Word has length 221 [2023-11-23 08:04:32,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:32,281 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 533 transitions. [2023-11-23 08:04:32,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2023-11-23 08:04:32,281 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 533 transitions. [2023-11-23 08:04:32,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-23 08:04:32,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:32,283 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:32,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 08:04:32,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:32,499 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:32,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:32,499 INFO L85 PathProgramCache]: Analyzing trace with hash -2062914412, now seen corresponding path program 1 times [2023-11-23 08:04:32,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:32,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005099933] [2023-11-23 08:04:32,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:32,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:32,563 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:32,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [216002501] [2023-11-23 08:04:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:32,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:32,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:32,568 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:32,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 08:04:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:33,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 3248 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 08:04:33,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:33,108 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 256 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2023-11-23 08:04:33,108 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:04:33,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:33,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005099933] [2023-11-23 08:04:33,109 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:33,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216002501] [2023-11-23 08:04:33,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216002501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:04:33,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:04:33,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:04:33,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863183812] [2023-11-23 08:04:33,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:04:33,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:04:33,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:04:33,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:04:33,111 INFO L87 Difference]: Start difference. First operand 367 states and 533 transitions. Second operand has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-23 08:04:33,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:04:33,556 INFO L93 Difference]: Finished difference Result 619 states and 883 transitions. [2023-11-23 08:04:33,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:04:33,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 221 [2023-11-23 08:04:33,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:04:33,559 INFO L225 Difference]: With dead ends: 619 [2023-11-23 08:04:33,559 INFO L226 Difference]: Without dead ends: 391 [2023-11-23 08:04:33,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:04:33,561 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 23 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:04:33,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2042 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:04:33,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-11-23 08:04:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 367. [2023-11-23 08:04:33,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 202 states have (on average 1.2326732673267327) internal successors, (249), 204 states have internal predecessors, (249), 138 states have call successors, (138), 23 states have call predecessors, (138), 26 states have return successors, (145), 139 states have call predecessors, (145), 137 states have call successors, (145) [2023-11-23 08:04:33,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 532 transitions. [2023-11-23 08:04:33,577 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 532 transitions. Word has length 221 [2023-11-23 08:04:33,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:04:33,577 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 532 transitions. [2023-11-23 08:04:33,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2023-11-23 08:04:33,577 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 532 transitions. [2023-11-23 08:04:33,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-23 08:04:33,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:04:33,579 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:04:33,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 08:04:33,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 08:04:33,780 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:04:33,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:04:33,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1115876526, now seen corresponding path program 1 times [2023-11-23 08:04:33,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:04:33,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627509823] [2023-11-23 08:04:33,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:33,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:04:33,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:04:33,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118014178] [2023-11-23 08:04:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:04:33,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:04:33,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:04:33,869 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:04:33,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 08:04:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:04:34,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 3245 conjuncts, 90 conjunts are in the unsatisfiable core [2023-11-23 08:04:34,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:04:34,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:04:34,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:04:34,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-23 08:04:34,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:04:34,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-23 08:04:38,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:04:38,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 08:04:38,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:04:38,917 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 08:04:38,931 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-23 08:04:38,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-23 08:04:54,018 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 208 proven. 12 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2023-11-23 08:04:54,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:04:56,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:04:56,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627509823] [2023-11-23 08:04:56,074 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:04:56,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118014178] [2023-11-23 08:04:56,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118014178] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:04:56,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:04:56,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-23 08:04:56,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262561628] [2023-11-23 08:04:56,074 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 08:04:56,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 08:04:56,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:04:56,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 08:04:56,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=517, Unknown=7, NotChecked=0, Total=600 [2023-11-23 08:04:56,075 INFO L87 Difference]: Start difference. First operand 367 states and 532 transitions. Second operand has 18 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 7 states have call successors, (31), 6 states have call predecessors, (31), 8 states have return successors, (29), 6 states have call predecessors, (29), 7 states have call successors, (29) [2023-11-23 08:04:58,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:01,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:04,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:06,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:12,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:14,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:16,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:19,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:21,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:23,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:27,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:30,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:32,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:35,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:37,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:42,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:44,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:46,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:49,460 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:51,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:54,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:57,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:05:59,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:03,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:07,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:09,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:11,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:13,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:06:13,567 INFO L93 Difference]: Finished difference Result 1115 states and 1774 transitions. [2023-11-23 08:06:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-23 08:06:13,567 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 7 states have call successors, (31), 6 states have call predecessors, (31), 8 states have return successors, (29), 6 states have call predecessors, (29), 7 states have call successors, (29) Word has length 221 [2023-11-23 08:06:13,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:06:13,573 INFO L225 Difference]: With dead ends: 1115 [2023-11-23 08:06:13,573 INFO L226 Difference]: Without dead ends: 731 [2023-11-23 08:06:13,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 373 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=284, Invalid=1601, Unknown=7, NotChecked=0, Total=1892 [2023-11-23 08:06:13,575 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 405 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 322 mSolverCounterUnsat, 27 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1541 SdHoareTripleChecker+Invalid, 3043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 27 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:06:13,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 1541 Invalid, 3043 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [322 Valid, 2694 Invalid, 27 Unknown, 0 Unchecked, 74.3s Time] [2023-11-23 08:06:13,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-11-23 08:06:13,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 373. [2023-11-23 08:06:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 206 states have (on average 1.2233009708737863) internal successors, (252), 208 states have internal predecessors, (252), 137 states have call successors, (137), 26 states have call predecessors, (137), 29 states have return successors, (144), 138 states have call predecessors, (144), 136 states have call successors, (144) [2023-11-23 08:06:13,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 533 transitions. [2023-11-23 08:06:13,609 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 533 transitions. Word has length 221 [2023-11-23 08:06:13,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:06:13,609 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 533 transitions. [2023-11-23 08:06:13,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.9375) internal successors, (79), 16 states have internal predecessors, (79), 7 states have call successors, (31), 6 states have call predecessors, (31), 8 states have return successors, (29), 6 states have call predecessors, (29), 7 states have call successors, (29) [2023-11-23 08:06:13,610 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 533 transitions. [2023-11-23 08:06:13,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-23 08:06:13,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:06:13,612 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:06:13,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 08:06:13,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:06:13,829 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:06:13,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:06:13,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1341689991, now seen corresponding path program 1 times [2023-11-23 08:06:13,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:06:13,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445607613] [2023-11-23 08:06:13,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:13,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:06:13,880 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:06:13,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [127665111] [2023-11-23 08:06:13,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:06:13,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:06:13,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:06:13,882 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:06:13,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 08:06:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:06:14,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 3282 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-23 08:06:14,499 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:06:14,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:06:15,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:06:15,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 1 [2023-11-23 08:06:16,226 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 57 treesize of output 27 [2023-11-23 08:06:16,589 INFO L349 Elim1Store]: treesize reduction 25, result has 37.5 percent of original size [2023-11-23 08:06:16,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 19 [2023-11-23 08:06:16,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 19 [2023-11-23 08:06:16,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-11-23 08:06:17,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-23 08:06:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 159 proven. 4 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-11-23 08:06:21,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:06:22,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:06:22,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445607613] [2023-11-23 08:06:22,982 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:06:22,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127665111] [2023-11-23 08:06:22,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127665111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 08:06:22,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:06:22,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-11-23 08:06:22,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349242702] [2023-11-23 08:06:22,982 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 08:06:22,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 08:06:22,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:06:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 08:06:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=440, Unknown=1, NotChecked=0, Total=506 [2023-11-23 08:06:22,984 INFO L87 Difference]: Start difference. First operand 373 states and 533 transitions. Second operand has 22 states, 19 states have (on average 4.0) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (32), 7 states have call predecessors, (32), 8 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2023-11-23 08:06:27,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:31,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:37,630 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:42,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:06:45,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:35,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:38,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 08:07:41,325 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 08:07:45,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:07:45,426 INFO L93 Difference]: Finished difference Result 1404 states and 2363 transitions. [2023-11-23 08:07:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-23 08:07:45,426 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 4.0) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (32), 7 states have call predecessors, (32), 8 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) Word has length 226 [2023-11-23 08:07:45,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:07:45,432 INFO L225 Difference]: With dead ends: 1404 [2023-11-23 08:07:45,432 INFO L226 Difference]: Without dead ends: 1055 [2023-11-23 08:07:45,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 381 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=497, Invalid=3162, Unknown=1, NotChecked=0, Total=3660 [2023-11-23 08:07:45,435 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 741 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 7492 mSolverCounterSat, 763 mSolverCounterUnsat, 40 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 800 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 8295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 763 IncrementalHoareTripleChecker+Valid, 7492 IncrementalHoareTripleChecker+Invalid, 40 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 74.6s IncrementalHoareTripleChecker+Time [2023-11-23 08:07:45,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [800 Valid, 2783 Invalid, 8295 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [763 Valid, 7492 Invalid, 40 Unknown, 0 Unchecked, 74.6s Time] [2023-11-23 08:07:45,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2023-11-23 08:07:45,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1006. [2023-11-23 08:07:45,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 551 states have (on average 1.2359346642468239) internal successors, (681), 567 states have internal predecessors, (681), 371 states have call successors, (371), 68 states have call predecessors, (371), 83 states have return successors, (659), 370 states have call predecessors, (659), 369 states have call successors, (659) [2023-11-23 08:07:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1711 transitions. [2023-11-23 08:07:45,510 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1711 transitions. Word has length 226 [2023-11-23 08:07:45,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:07:45,510 INFO L495 AbstractCegarLoop]: Abstraction has 1006 states and 1711 transitions. [2023-11-23 08:07:45,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 4.0) internal successors, (76), 18 states have internal predecessors, (76), 8 states have call successors, (32), 7 states have call predecessors, (32), 8 states have return successors, (30), 8 states have call predecessors, (30), 8 states have call successors, (30) [2023-11-23 08:07:45,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1711 transitions. [2023-11-23 08:07:45,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-23 08:07:45,513 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:07:45,514 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:07:45,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 08:07:45,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 08:07:45,728 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:07:45,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:07:45,729 INFO L85 PathProgramCache]: Analyzing trace with hash -27782353, now seen corresponding path program 1 times [2023-11-23 08:07:45,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:07:45,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505366444] [2023-11-23 08:07:45,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:07:45,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:07:45,776 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:07:45,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [202957738] [2023-11-23 08:07:45,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:07:45,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:07:45,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:07:45,778 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:07:45,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 08:07:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:07:46,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 3279 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 08:07:46,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:07:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 160 proven. 4 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-23 08:07:47,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:07:51,743 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 70 proven. 10 refuted. 0 times theorem prover too weak. 415 trivial. 0 not checked. [2023-11-23 08:07:51,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:07:51,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505366444] [2023-11-23 08:07:51,743 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:07:51,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202957738] [2023-11-23 08:07:51,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202957738] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:07:51,743 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:07:51,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2023-11-23 08:07:51,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504112600] [2023-11-23 08:07:51,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:07:51,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 08:07:51,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:07:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 08:07:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:07:51,745 INFO L87 Difference]: Start difference. First operand 1006 states and 1711 transitions. Second operand has 22 states, 17 states have (on average 6.235294117647059) internal successors, (106), 15 states have internal predecessors, (106), 5 states have call successors, (39), 3 states have call predecessors, (39), 7 states have return successors, (40), 8 states have call predecessors, (40), 4 states have call successors, (40) [2023-11-23 08:07:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:07:59,622 INFO L93 Difference]: Finished difference Result 1445 states and 2366 transitions. [2023-11-23 08:07:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-23 08:07:59,623 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 6.235294117647059) internal successors, (106), 15 states have internal predecessors, (106), 5 states have call successors, (39), 3 states have call predecessors, (39), 7 states have return successors, (40), 8 states have call predecessors, (40), 4 states have call successors, (40) Word has length 240 [2023-11-23 08:07:59,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:07:59,626 INFO L225 Difference]: With dead ends: 1445 [2023-11-23 08:07:59,626 INFO L226 Difference]: Without dead ends: 578 [2023-11-23 08:07:59,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 454 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=85, Invalid=727, Unknown=0, NotChecked=0, Total=812 [2023-11-23 08:07:59,631 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 23 mSDsluCounter, 5252 mSDsCounter, 0 mSdLazyCounter, 893 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 5586 SdHoareTripleChecker+Invalid, 897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:07:59,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 5586 Invalid, 897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 893 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-23 08:07:59,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-11-23 08:07:59,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 543. [2023-11-23 08:07:59,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 308 states have (on average 1.2045454545454546) internal successors, (371), 318 states have internal predecessors, (371), 180 states have call successors, (180), 47 states have call predecessors, (180), 54 states have return successors, (288), 177 states have call predecessors, (288), 179 states have call successors, (288) [2023-11-23 08:07:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 839 transitions. [2023-11-23 08:07:59,666 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 839 transitions. Word has length 240 [2023-11-23 08:07:59,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:07:59,667 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 839 transitions. [2023-11-23 08:07:59,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 6.235294117647059) internal successors, (106), 15 states have internal predecessors, (106), 5 states have call successors, (39), 3 states have call predecessors, (39), 7 states have return successors, (40), 8 states have call predecessors, (40), 4 states have call successors, (40) [2023-11-23 08:07:59,667 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 839 transitions. [2023-11-23 08:07:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-23 08:07:59,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:07:59,670 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:07:59,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 08:07:59,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 08:07:59,889 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:07:59,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:07:59,889 INFO L85 PathProgramCache]: Analyzing trace with hash 57518767, now seen corresponding path program 2 times [2023-11-23 08:07:59,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:07:59,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545900247] [2023-11-23 08:07:59,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:07:59,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:07:59,951 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:07:59,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [839572639] [2023-11-23 08:07:59,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:07:59,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:07:59,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:07:59,954 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:07:59,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 08:08:00,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:08:00,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:08:00,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 3279 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 08:08:00,753 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:08:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2023-11-23 08:08:01,846 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:08:01,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:08:01,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545900247] [2023-11-23 08:08:01,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:08:01,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839572639] [2023-11-23 08:08:01,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839572639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:08:01,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:08:01,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 08:08:01,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529740867] [2023-11-23 08:08:01,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:08:01,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:08:01,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:08:01,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:08:01,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:08:01,848 INFO L87 Difference]: Start difference. First operand 543 states and 839 transitions. Second operand has 12 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 3 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (33), 5 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-23 08:08:06,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:08:06,120 INFO L93 Difference]: Finished difference Result 966 states and 1487 transitions. [2023-11-23 08:08:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:08:06,122 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 3 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (33), 5 states have call predecessors, (33), 3 states have call successors, (33) Word has length 240 [2023-11-23 08:08:06,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:08:06,124 INFO L225 Difference]: With dead ends: 966 [2023-11-23 08:08:06,124 INFO L226 Difference]: Without dead ends: 525 [2023-11-23 08:08:06,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:08:06,127 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 10 mSDsluCounter, 3262 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3595 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:08:06,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3595 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-23 08:08:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-11-23 08:08:06,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2023-11-23 08:08:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 300 states have (on average 1.2066666666666668) internal successors, (362), 310 states have internal predecessors, (362), 170 states have call successors, (170), 47 states have call predecessors, (170), 54 states have return successors, (264), 167 states have call predecessors, (264), 169 states have call successors, (264) [2023-11-23 08:08:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 796 transitions. [2023-11-23 08:08:06,160 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 796 transitions. Word has length 240 [2023-11-23 08:08:06,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:08:06,161 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 796 transitions. [2023-11-23 08:08:06,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 3 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (33), 5 states have call predecessors, (33), 3 states have call successors, (33) [2023-11-23 08:08:06,161 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 796 transitions. [2023-11-23 08:08:06,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-23 08:08:06,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:08:06,163 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:08:06,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 08:08:06,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 08:08:06,372 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:08:06,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:08:06,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1225763275, now seen corresponding path program 3 times [2023-11-23 08:08:06,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:08:06,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520388951] [2023-11-23 08:08:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:08:06,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:08:06,424 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:08:06,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556623392] [2023-11-23 08:08:06,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:08:06,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:08:06,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:08:06,426 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:08:06,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 08:08:07,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 08:08:07,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:08:07,262 INFO L262 TraceCheckSpWp]: Trace formula consists of 2449 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-23 08:08:07,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:08:08,297 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 244 proven. 0 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-11-23 08:08:08,297 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:08:08,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:08:08,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520388951] [2023-11-23 08:08:08,298 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:08:08,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556623392] [2023-11-23 08:08:08,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556623392] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:08:08,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:08:08,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 08:08:08,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773330685] [2023-11-23 08:08:08,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:08:08,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 08:08:08,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:08:08,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 08:08:08,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:08:08,299 INFO L87 Difference]: Start difference. First operand 525 states and 796 transitions. Second operand has 12 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 3 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 08:08:12,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:08:12,446 INFO L93 Difference]: Finished difference Result 904 states and 1387 transitions. [2023-11-23 08:08:12,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:08:12,446 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 3 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) Word has length 240 [2023-11-23 08:08:12,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:08:12,449 INFO L225 Difference]: With dead ends: 904 [2023-11-23 08:08:12,449 INFO L226 Difference]: Without dead ends: 525 [2023-11-23 08:08:12,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:08:12,453 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 10 mSDsluCounter, 3337 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 3678 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:08:12,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 3678 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-23 08:08:12,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2023-11-23 08:08:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2023-11-23 08:08:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 300 states have (on average 1.2066666666666668) internal successors, (362), 310 states have internal predecessors, (362), 170 states have call successors, (170), 47 states have call predecessors, (170), 54 states have return successors, (262), 167 states have call predecessors, (262), 169 states have call successors, (262) [2023-11-23 08:08:12,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 794 transitions. [2023-11-23 08:08:12,514 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 794 transitions. Word has length 240 [2023-11-23 08:08:12,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:08:12,515 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 794 transitions. [2023-11-23 08:08:12,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 3 states have call successors, (34), 2 states have call predecessors, (34), 6 states have return successors, (34), 5 states have call predecessors, (34), 3 states have call successors, (34) [2023-11-23 08:08:12,515 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 794 transitions. [2023-11-23 08:08:12,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2023-11-23 08:08:12,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:08:12,517 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:08:12,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-23 08:08:12,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 08:08:12,728 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:08:12,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:08:12,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2120106001, now seen corresponding path program 4 times [2023-11-23 08:08:12,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:08:12,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813058212] [2023-11-23 08:08:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:08:12,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:08:12,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:08:12,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518922527] [2023-11-23 08:08:12,795 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 08:08:12,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:08:12,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:08:12,796 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:08:12,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 08:08:13,359 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 08:08:13,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:08:13,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 3281 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 08:08:13,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:08:13,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-23 08:08:14,485 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 251 proven. 18 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2023-11-23 08:08:14,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:08:16,891 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2023-11-23 08:08:16,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:08:16,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813058212] [2023-11-23 08:08:16,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:08:16,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518922527] [2023-11-23 08:08:16,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518922527] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:08:16,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:08:16,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2023-11-23 08:08:16,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760682025] [2023-11-23 08:08:16,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:08:16,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 08:08:16,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:08:16,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 08:08:16,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:08:16,893 INFO L87 Difference]: Start difference. First operand 525 states and 794 transitions. Second operand has 16 states, 12 states have (on average 8.416666666666666) internal successors, (101), 14 states have internal predecessors, (101), 6 states have call successors, (45), 3 states have call predecessors, (45), 5 states have return successors, (43), 4 states have call predecessors, (43), 5 states have call successors, (43) [2023-11-23 08:08:24,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:08:24,172 INFO L93 Difference]: Finished difference Result 833 states and 1235 transitions. [2023-11-23 08:08:24,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 08:08:24,172 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 8.416666666666666) internal successors, (101), 14 states have internal predecessors, (101), 6 states have call successors, (45), 3 states have call predecessors, (45), 5 states have return successors, (43), 4 states have call predecessors, (43), 5 states have call successors, (43) Word has length 232 [2023-11-23 08:08:24,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:08:24,174 INFO L225 Difference]: With dead ends: 833 [2023-11-23 08:08:24,175 INFO L226 Difference]: Without dead ends: 419 [2023-11-23 08:08:24,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:08:24,177 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 13 mSDsluCounter, 3506 mSDsCounter, 0 mSdLazyCounter, 808 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3811 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:08:24,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3811 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 808 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2023-11-23 08:08:24,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-23 08:08:24,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 404. [2023-11-23 08:08:24,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 235 states have (on average 1.1914893617021276) internal successors, (280), 243 states have internal predecessors, (280), 116 states have call successors, (116), 45 states have call predecessors, (116), 52 states have return successors, (167), 115 states have call predecessors, (167), 115 states have call successors, (167) [2023-11-23 08:08:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 563 transitions. [2023-11-23 08:08:24,197 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 563 transitions. Word has length 232 [2023-11-23 08:08:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:08:24,197 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 563 transitions. [2023-11-23 08:08:24,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 8.416666666666666) internal successors, (101), 14 states have internal predecessors, (101), 6 states have call successors, (45), 3 states have call predecessors, (45), 5 states have return successors, (43), 4 states have call predecessors, (43), 5 states have call successors, (43) [2023-11-23 08:08:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 563 transitions. [2023-11-23 08:08:24,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-23 08:08:24,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:08:24,199 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:08:24,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-23 08:08:24,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:08:24,416 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:08:24,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:08:24,416 INFO L85 PathProgramCache]: Analyzing trace with hash 413245774, now seen corresponding path program 1 times [2023-11-23 08:08:24,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:08:24,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547459158] [2023-11-23 08:08:24,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:08:24,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:08:24,469 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:08:24,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442742014] [2023-11-23 08:08:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:08:24,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:08:24,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:08:24,471 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:08:24,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 08:08:25,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:25,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 3321 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-23 08:08:25,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:08:27,732 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 305 proven. 1 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-11-23 08:08:27,732 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:08:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 527 backedges. 45 proven. 64 refuted. 0 times theorem prover too weak. 418 trivial. 0 not checked. [2023-11-23 08:08:34,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:08:34,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547459158] [2023-11-23 08:08:34,075 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:08:34,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442742014] [2023-11-23 08:08:34,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442742014] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:08:34,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:08:34,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 31 [2023-11-23 08:08:34,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663846345] [2023-11-23 08:08:34,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:08:34,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-23 08:08:34,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:08:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-23 08:08:34,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=859, Unknown=0, NotChecked=0, Total=930 [2023-11-23 08:08:34,077 INFO L87 Difference]: Start difference. First operand 404 states and 563 transitions. Second operand has 31 states, 23 states have (on average 5.173913043478261) internal successors, (119), 22 states have internal predecessors, (119), 7 states have call successors, (49), 3 states have call predecessors, (49), 10 states have return successors, (50), 10 states have call predecessors, (50), 6 states have call successors, (50) [2023-11-23 08:08:46,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:08:46,390 INFO L93 Difference]: Finished difference Result 748 states and 1043 transitions. [2023-11-23 08:08:46,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-23 08:08:46,390 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 23 states have (on average 5.173913043478261) internal successors, (119), 22 states have internal predecessors, (119), 7 states have call successors, (49), 3 states have call predecessors, (49), 10 states have return successors, (50), 10 states have call predecessors, (50), 6 states have call successors, (50) Word has length 242 [2023-11-23 08:08:46,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:08:46,393 INFO L225 Difference]: With dead ends: 748 [2023-11-23 08:08:46,393 INFO L226 Difference]: Without dead ends: 400 [2023-11-23 08:08:46,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 449 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=119, Invalid=1441, Unknown=0, NotChecked=0, Total=1560 [2023-11-23 08:08:46,395 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 38 mSDsluCounter, 7717 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 8045 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:08:46,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 8045 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2023-11-23 08:08:46,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2023-11-23 08:08:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 391. [2023-11-23 08:08:46,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 227 states have (on average 1.1850220264317182) internal successors, (269), 234 states have internal predecessors, (269), 112 states have call successors, (112), 44 states have call predecessors, (112), 51 states have return successors, (159), 112 states have call predecessors, (159), 111 states have call successors, (159) [2023-11-23 08:08:46,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 540 transitions. [2023-11-23 08:08:46,415 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 540 transitions. Word has length 242 [2023-11-23 08:08:46,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:08:46,416 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 540 transitions. [2023-11-23 08:08:46,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 23 states have (on average 5.173913043478261) internal successors, (119), 22 states have internal predecessors, (119), 7 states have call successors, (49), 3 states have call predecessors, (49), 10 states have return successors, (50), 10 states have call predecessors, (50), 6 states have call successors, (50) [2023-11-23 08:08:46,416 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 540 transitions. [2023-11-23 08:08:46,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-23 08:08:46,417 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:08:46,418 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:08:46,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 08:08:46,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 08:08:46,635 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:08:46,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:08:46,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1464530912, now seen corresponding path program 1 times [2023-11-23 08:08:46,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:08:46,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984399395] [2023-11-23 08:08:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:08:46,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:08:46,713 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:08:46,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429643760] [2023-11-23 08:08:46,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:08:46,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:08:46,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:08:46,718 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:08:46,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 08:08:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:08:47,418 INFO L262 TraceCheckSpWp]: Trace formula consists of 3322 conjuncts, 101 conjunts are in the unsatisfiable core [2023-11-23 08:08:47,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:08:47,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-23 08:08:48,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-23 08:08:48,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 3 Killed by 15