./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_harness_negated.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_harness_negated.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 661cd2cbf3d9840c04d4d53ba6b9af71b83d3629a17112d42635cc93577e3805 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:43:48,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:43:48,934 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:43:48,938 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:43:48,938 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:43:48,968 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:43:48,968 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:43:48,969 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:43:48,969 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:43:48,972 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:43:48,973 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:43:48,973 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:43:48,974 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:43:48,975 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:43:48,975 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:43:48,975 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:43:48,975 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:43:48,976 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:43:48,976 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:43:48,977 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:43:48,977 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:43:48,977 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:43:48,978 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:43:48,978 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:43:48,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:43:48,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:43:48,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:43:48,979 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:43:48,979 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:43:48,979 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:43:48,980 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:43:48,980 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:43:48,981 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:43:48,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:43:48,981 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:43:48,981 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:43:48,981 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:43:48,981 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:43:48,982 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:43:48,982 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 661cd2cbf3d9840c04d4d53ba6b9af71b83d3629a17112d42635cc93577e3805 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:43:49,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:43:49,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:43:49,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:43:49,241 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:43:49,241 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:43:49,242 INFO L431 ainManager$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_negated.i [2023-11-23 06:43:50,298 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:43:50,612 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:43:50,613 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_set_at_harness_negated.i [2023-11-23 06:43:50,638 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0417822/d68b104d4fd843bbaf41621f97e2aea1/FLAGa540e3cdb [2023-11-23 06:43:50,651 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f0417822/d68b104d4fd843bbaf41621f97e2aea1 [2023-11-23 06:43:50,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:43:50,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:43:50,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:43:50,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:43:50,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:43:50,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:43:50" (1/1) ... [2023-11-23 06:43:50,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6e4f6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:50, skipping insertion in model container [2023-11-23 06:43:50,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:43:50" (1/1) ... [2023-11-23 06:43:50,750 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:43:50,924 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_negated.i[4495,4508] [2023-11-23 06:43:50,930 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_negated.i[4555,4568] [2023-11-23 06:43:51,380 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,382 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,382 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,383 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,386 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,393 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,394 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,395 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,395 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,396 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,397 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,397 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,398 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,578 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:43:51,581 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:43:51,583 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:43:51,585 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:43:51,590 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:43:51,590 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:43:51,591 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:43:51,591 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:43:51,592 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:43:51,593 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:43:51,702 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,710 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,758 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,759 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,759 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:43:51,795 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:43:51,816 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_negated.i[4495,4508] [2023-11-23 06:43:51,817 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_negated.i[4555,4568] [2023-11-23 06:43:51,850 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,855 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,855 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,855 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,856 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,859 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,861 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,862 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,862 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,863 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,863 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,864 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,864 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,893 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:43:51,894 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:43:51,895 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:43:51,896 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:43:51,897 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:43:51,899 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:43:51,899 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:43:51,899 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:43:51,900 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:43:51,900 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:43:51,934 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,937 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,982 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7738-7749] [2023-11-23 06:43:51,991 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,991 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,991 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:43:51,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:43:52,170 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,170 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,170 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,170 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,170 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,171 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,171 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,171 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,171 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,171 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,172 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,172 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,172 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,172 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,172 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:43:52,178 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:43:52,179 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52 WrapperNode [2023-11-23 06:43:52,179 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:43:52,184 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:43:52,184 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:43:52,184 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:43:52,189 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (1/1) ... [2023-11-23 06:43:52,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (1/1) ... [2023-11-23 06:43:52,318 INFO L138 Inliner]: procedures = 690, calls = 1682, calls flagged for inlining = 51, calls inlined = 11, statements flattened = 850 [2023-11-23 06:43:52,322 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:43:52,322 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:43:52,322 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:43:52,323 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:43:52,330 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (1/1) ... [2023-11-23 06:43:52,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (1/1) ... [2023-11-23 06:43:52,339 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (1/1) ... [2023-11-23 06:43:52,396 INFO L188 MemorySlicer]: Split 333 memory accesses to 7 slices as follows [2, 6, 236, 6, 72, 8, 3]. 71 percent of accesses are in the largest equivalence class. The 257 initializations are split as follows [2, 0, 236, 1, 10, 5, 3]. The 9 writes are split as follows [0, 2, 0, 1, 6, 0, 0]. [2023-11-23 06:43:52,404 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (1/1) ... [2023-11-23 06:43:52,405 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (1/1) ... [2023-11-23 06:43:52,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (1/1) ... [2023-11-23 06:43:52,446 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (1/1) ... [2023-11-23 06:43:52,461 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (1/1) ... [2023-11-23 06:43:52,472 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (1/1) ... [2023-11-23 06:43:52,485 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:43:52,488 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:43:52,488 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:43:52,488 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:43:52,489 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (1/1) ... [2023-11-23 06:43:52,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:43:52,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:43:52,519 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 06:43:52,537 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 06:43:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:43:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 06:43:52,561 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 06:43:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 06:43:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 06:43:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:43:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:43:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-23 06:43:52,562 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-23 06:43:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:43:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:43:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:43:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:43:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:43:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:43:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 06:43:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 06:43:52,564 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 06:43:52,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:43:52,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:43:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:43:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:43:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:43:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:43:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:43:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:43:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:43:52,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:43:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 06:43:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 06:43:52,566 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 06:43:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:43:52,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:43:52,566 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:43:52,566 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:43:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 06:43:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 06:43:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 06:43:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 06:43:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-23 06:43:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-23 06:43:52,567 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 06:43:52,567 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 06:43:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 06:43:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 06:43:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:43:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:43:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 06:43:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 06:43:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-23 06:43:52,568 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-23 06:43:52,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:43:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2023-11-23 06:43:52,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2023-11-23 06:43:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:43:52,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:43:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:43:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:43:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:43:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:43:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 06:43:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:43:52,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:43:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:43:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:43:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:43:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:43:52,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 06:43:52,572 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:43:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:43:52,572 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 06:43:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 06:43:52,572 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2023-11-23 06:43:52,572 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2023-11-23 06:43:52,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:43:52,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:43:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:43:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:43:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:43:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:43:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 06:43:52,575 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 06:43:52,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 06:43:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2023-11-23 06:43:52,576 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2023-11-23 06:43:52,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:43:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:43:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:43:52,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:43:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:43:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:43:52,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 06:43:52,883 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:43:52,885 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:43:53,431 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:43:53,515 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:43:53,516 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 06:43:53,516 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:43:53 BoogieIcfgContainer [2023-11-23 06:43:53,516 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:43:53,518 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:43:53,518 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:43:53,520 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:43:53,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:43:50" (1/3) ... [2023-11-23 06:43:53,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61686066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:43:53, skipping insertion in model container [2023-11-23 06:43:53,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:43:52" (2/3) ... [2023-11-23 06:43:53,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61686066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:43:53, skipping insertion in model container [2023-11-23 06:43:53,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:43:53" (3/3) ... [2023-11-23 06:43:53,524 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness_negated.i [2023-11-23 06:43:53,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:43:53,536 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:43:53,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:43:53,589 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;@5728dac0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:43:53,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:43:53,592 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 06:43:53,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 06:43:53,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:43:53,602 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 06:43:53,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:43:53,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:43:53,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2030849426, now seen corresponding path program 1 times [2023-11-23 06:43:53,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:43:53,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95445790] [2023-11-23 06:43:53,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:53,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:43:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:43:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:43:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:43:54,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 06:43:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 06:43:54,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:43:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:43:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:43:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:43:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:43:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:43:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:43:54,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:43:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:43:54,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:43:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:43:54,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:43:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 06:43:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:43:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:43:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 06:43:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 06:43:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:43:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 06:43:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-23 06:43:54,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:43:54,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95445790] [2023-11-23 06:43:54,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95445790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:43:54,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:43:54,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:43:54,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763881258] [2023-11-23 06:43:54,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:43:54,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:43:54,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:43:54,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:43:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:43:54,592 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 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 06:43:55,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:43:55,670 INFO L93 Difference]: Finished difference Result 545 states and 846 transitions. [2023-11-23 06:43:55,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:43:55,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 139 [2023-11-23 06:43:55,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:43:55,687 INFO L225 Difference]: With dead ends: 545 [2023-11-23 06:43:55,687 INFO L226 Difference]: Without dead ends: 288 [2023-11-23 06:43:55,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:43:55,698 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 194 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:43:55,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 365 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:43:55,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-23 06:43:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 258. [2023-11-23 06:43:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 142 states have (on average 1.2394366197183098) internal successors, (176), 143 states have internal predecessors, (176), 93 states have call successors, (93), 22 states have call predecessors, (93), 22 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-23 06:43:55,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 361 transitions. [2023-11-23 06:43:55,793 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 361 transitions. Word has length 139 [2023-11-23 06:43:55,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:43:55,794 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 361 transitions. [2023-11-23 06:43:55,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-23 06:43:55,797 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 361 transitions. [2023-11-23 06:43:55,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-23 06:43:55,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:43:55,804 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 06:43:55,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:43:55,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:43:55,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:43:55,805 INFO L85 PathProgramCache]: Analyzing trace with hash -315484528, now seen corresponding path program 1 times [2023-11-23 06:43:55,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:43:55,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880001022] [2023-11-23 06:43:55,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:55,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:43:55,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:43:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:43:56,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:43:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 06:43:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 06:43:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:43:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:43:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 06:43:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-23 06:43:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 06:43:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:43:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-23 06:43:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 06:43:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:43:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 06:43:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 06:43:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 06:43:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-11-23 06:43:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 06:43:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-23 06:43:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-23 06:43:56,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-23 06:43:56,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:43:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-23 06:43:56,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,480 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 06:43:56,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:43:56,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880001022] [2023-11-23 06:43:56,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880001022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:43:56,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70807550] [2023-11-23 06:43:56,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:56,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:56,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:43:56,485 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 06:43:56,512 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 06:43:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:56,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 2850 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 06:43:56,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:43:57,068 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 06:43:57,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:43:57,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70807550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:43:57,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:43:57,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2023-11-23 06:43:57,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341166173] [2023-11-23 06:43:57,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:43:57,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:43:57,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:43:57,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:43:57,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:43:57,070 INFO L87 Difference]: Start difference. First operand 258 states and 361 transitions. 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 06:43:57,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:43:57,449 INFO L93 Difference]: Finished difference Result 494 states and 708 transitions. [2023-11-23 06:43:57,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:43:57,449 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 06:43:57,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:43:57,454 INFO L225 Difference]: With dead ends: 494 [2023-11-23 06:43:57,454 INFO L226 Difference]: Without dead ends: 260 [2023-11-23 06:43:57,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-23 06:43:57,459 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 43 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:43:57,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1159 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:43:57,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-23 06:43:57,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-11-23 06:43:57,491 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 06:43:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 378 transitions. [2023-11-23 06:43:57,494 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 378 transitions. Word has length 139 [2023-11-23 06:43:57,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:43:57,495 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 378 transitions. [2023-11-23 06:43:57,495 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 06:43:57,496 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 378 transitions. [2023-11-23 06:43:57,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 06:43:57,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:43:57,498 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 06:43:57,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 06:43:57,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:57,712 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:43:57,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:43:57,713 INFO L85 PathProgramCache]: Analyzing trace with hash -699074486, now seen corresponding path program 1 times [2023-11-23 06:43:57,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:43:57,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164086458] [2023-11-23 06:43:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:43:57,768 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:43:57,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815218512] [2023-11-23 06:43:57,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:57,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:57,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:43:57,770 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 06:43:57,789 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 06:43:58,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:43:58,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 06:43:58,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:43:58,414 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 06:43:58,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:43:58,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:43:58,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164086458] [2023-11-23 06:43:58,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:43:58,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815218512] [2023-11-23 06:43:58,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815218512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:43:58,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:43:58,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:43:58,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848222215] [2023-11-23 06:43:58,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:43:58,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:43:58,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:43:58,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:43:58,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:43:58,419 INFO L87 Difference]: Start difference. First operand 260 states and 378 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 06:43:58,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:43:58,966 INFO L93 Difference]: Finished difference Result 475 states and 689 transitions. [2023-11-23 06:43:58,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:43:58,966 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 06:43:58,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:43:58,968 INFO L225 Difference]: With dead ends: 475 [2023-11-23 06:43:58,968 INFO L226 Difference]: Without dead ends: 260 [2023-11-23 06:43:58,969 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 06:43:58,969 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 147 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 06:43:58,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 1591 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 06:43:58,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-11-23 06:43:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2023-11-23 06:43:58,998 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, (104), 92 states have call predecessors, (104), 92 states have call successors, (104) [2023-11-23 06:43:58,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 374 transitions. [2023-11-23 06:43:58,999 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 374 transitions. Word has length 165 [2023-11-23 06:43:59,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:43:59,000 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 374 transitions. [2023-11-23 06:43:59,000 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 06:43:59,000 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 374 transitions. [2023-11-23 06:43:59,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2023-11-23 06:43:59,001 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:43:59,002 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 06:43:59,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 06:43:59,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 06:43:59,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:43:59,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:43:59,217 INFO L85 PathProgramCache]: Analyzing trace with hash 107922179, now seen corresponding path program 2 times [2023-11-23 06:43:59,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:43:59,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262358937] [2023-11-23 06:43:59,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:43:59,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:43:59,268 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:43:59,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [87962530] [2023-11-23 06:43:59,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:43:59,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:43:59,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:43:59,269 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 06:43:59,271 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 06:43:59,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 06:43:59,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:43:59,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 2003 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 06:43:59,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:43:59,737 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 06:43:59,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:43:59,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:43:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262358937] [2023-11-23 06:43:59,738 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:43:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87962530] [2023-11-23 06:43:59,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87962530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:43:59,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:43:59,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:43:59,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137469165] [2023-11-23 06:43:59,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:43:59,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:43:59,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:43:59,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:43:59,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:43:59,740 INFO L87 Difference]: Start difference. First operand 260 states and 374 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 06:43:59,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:43:59,950 INFO L93 Difference]: Finished difference Result 456 states and 646 transitions. [2023-11-23 06:43:59,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:43:59,951 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 06:43:59,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:43:59,953 INFO L225 Difference]: With dead ends: 456 [2023-11-23 06:43:59,953 INFO L226 Difference]: Without dead ends: 264 [2023-11-23 06:43:59,954 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 06:43:59,954 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 1 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:43:59,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1362 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:43:59,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-23 06:43:59,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-11-23 06:43:59,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 146 states have (on average 1.2328767123287672) internal successors, (180), 148 states have internal predecessors, (180), 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 06:43:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 379 transitions. [2023-11-23 06:43:59,973 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 379 transitions. Word has length 178 [2023-11-23 06:43:59,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:43:59,974 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 379 transitions. [2023-11-23 06:43:59,974 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 06:43:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 379 transitions. [2023-11-23 06:43:59,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-23 06:43:59,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:43:59,976 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 06:43:59,993 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 06:44:00,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:00,184 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:44:00,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:44:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1081549851, now seen corresponding path program 1 times [2023-11-23 06:44:00,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:44:00,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999961035] [2023-11-23 06:44:00,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:00,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:44:00,234 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:44:00,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459385720] [2023-11-23 06:44:00,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:00,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:00,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:44:00,236 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 06:44:00,237 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 06:44:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:00,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 3410 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 06:44:00,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:44:00,866 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 06:44:00,867 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:44:00,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:44:00,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999961035] [2023-11-23 06:44:00,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:44:00,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459385720] [2023-11-23 06:44:00,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459385720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:44:00,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:44:00,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 06:44:00,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567858923] [2023-11-23 06:44:00,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:44:00,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:44:00,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:44:00,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:44:00,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:44:00,873 INFO L87 Difference]: Start difference. First operand 264 states and 379 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 06:44:01,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:44:01,619 INFO L93 Difference]: Finished difference Result 477 states and 681 transitions. [2023-11-23 06:44:01,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:44:01,620 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 06:44:01,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:44:01,622 INFO L225 Difference]: With dead ends: 477 [2023-11-23 06:44:01,622 INFO L226 Difference]: Without dead ends: 264 [2023-11-23 06:44:01,623 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 06:44:01,623 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 183 mSDsluCounter, 1505 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 06:44:01,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1801 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 06:44:01,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-23 06:44:01,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-11-23 06:44:01,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 146 states have (on average 1.2328767123287672) internal successors, (180), 148 states have internal predecessors, (180), 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 06:44:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 373 transitions. [2023-11-23 06:44:01,644 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 373 transitions. Word has length 182 [2023-11-23 06:44:01,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:44:01,645 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 373 transitions. [2023-11-23 06:44:01,645 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 06:44:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 373 transitions. [2023-11-23 06:44:01,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-23 06:44:01,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:44:01,647 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 06:44:01,667 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 06:44:01,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:01,868 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:44:01,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:44:01,869 INFO L85 PathProgramCache]: Analyzing trace with hash -685188088, now seen corresponding path program 2 times [2023-11-23 06:44:01,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:44:01,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512948248] [2023-11-23 06:44:01,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:01,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:44:01,938 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:44:01,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036912494] [2023-11-23 06:44:01,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:44:01,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:01,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:44:01,940 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 06:44:01,962 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 06:44:02,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 06:44:02,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:44:02,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 2002 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 06:44:02,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:44:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked. [2023-11-23 06:44:02,429 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:44:02,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:44:02,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512948248] [2023-11-23 06:44:02,429 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:44:02,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036912494] [2023-11-23 06:44:02,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036912494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:44:02,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:44:02,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 06:44:02,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013165998] [2023-11-23 06:44:02,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:44:02,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:44:02,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:44:02,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:44:02,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:44:02,431 INFO L87 Difference]: Start difference. First operand 264 states and 373 transitions. Second operand has 6 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-23 06:44:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:44:02,771 INFO L93 Difference]: Finished difference Result 272 states and 381 transitions. [2023-11-23 06:44:02,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:44:02,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 195 [2023-11-23 06:44:02,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:44:02,773 INFO L225 Difference]: With dead ends: 272 [2023-11-23 06:44:02,773 INFO L226 Difference]: Without dead ends: 270 [2023-11-23 06:44:02,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:44:02,773 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 5 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:44:02,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1681 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:44:02,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-23 06:44:02,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2023-11-23 06:44:02,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 149 states have (on average 1.2281879194630871) internal successors, (183), 151 states have internal predecessors, (183), 94 states have call successors, (94), 23 states have call predecessors, (94), 25 states have return successors, (101), 94 states have call predecessors, (101), 93 states have call successors, (101) [2023-11-23 06:44:02,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 378 transitions. [2023-11-23 06:44:02,791 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 378 transitions. Word has length 195 [2023-11-23 06:44:02,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:44:02,792 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 378 transitions. [2023-11-23 06:44:02,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2023-11-23 06:44:02,793 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 378 transitions. [2023-11-23 06:44:02,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2023-11-23 06:44:02,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:44:02,796 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 5, 5, 5, 5, 5, 5, 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 06:44:02,814 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 06:44:03,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:03,011 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:44:03,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:44:03,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1317665939, now seen corresponding path program 1 times [2023-11-23 06:44:03,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:44:03,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111798166] [2023-11-23 06:44:03,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:03,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:44:03,086 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:44:03,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260100041] [2023-11-23 06:44:03,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:03,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:03,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:44:03,088 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 06:44:03,089 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 06:44:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:03,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 3755 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 06:44:03,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:44:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-23 06:44:03,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:44:03,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:44:03,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111798166] [2023-11-23 06:44:03,756 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:44:03,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260100041] [2023-11-23 06:44:03,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260100041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:44:03,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:44:03,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:44:03,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590466708] [2023-11-23 06:44:03,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:44:03,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:44:03,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:44:03,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:44:03,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:44:03,758 INFO L87 Difference]: Start difference. First operand 269 states and 378 transitions. Second operand has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2023-11-23 06:44:04,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:44:04,385 INFO L93 Difference]: Finished difference Result 479 states and 669 transitions. [2023-11-23 06:44:04,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:44:04,385 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) Word has length 201 [2023-11-23 06:44:04,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:44:04,387 INFO L225 Difference]: With dead ends: 479 [2023-11-23 06:44:04,387 INFO L226 Difference]: Without dead ends: 264 [2023-11-23 06:44:04,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 194 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 06:44:04,388 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 193 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:44:04,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 2076 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:44:04,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-23 06:44:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2023-11-23 06:44:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 146 states have (on average 1.2328767123287672) internal successors, (180), 148 states have internal predecessors, (180), 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 06:44:04,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 369 transitions. [2023-11-23 06:44:04,403 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 369 transitions. Word has length 201 [2023-11-23 06:44:04,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:44:04,404 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 369 transitions. [2023-11-23 06:44:04,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 6 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2023-11-23 06:44:04,404 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 369 transitions. [2023-11-23 06:44:04,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-23 06:44:04,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:44:04,406 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 06:44:04,425 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 06:44:04,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:04,616 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:44:04,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:44:04,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1289327230, now seen corresponding path program 1 times [2023-11-23 06:44:04,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:44:04,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665805938] [2023-11-23 06:44:04,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:04,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:44:04,673 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:44:04,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [985625168] [2023-11-23 06:44:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:04,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:04,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:44:04,674 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 06:44:04,695 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 06:44:05,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:05,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 3971 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-23 06:44:05,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:44:05,416 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 06:44:05,416 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:44:05,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:44:05,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665805938] [2023-11-23 06:44:05,417 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:44:05,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985625168] [2023-11-23 06:44:05,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985625168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:44:05,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:44:05,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:44:05,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017666730] [2023-11-23 06:44:05,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:44:05,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:44:05,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:44:05,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:44:05,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:44:05,419 INFO L87 Difference]: Start difference. First operand 264 states and 369 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 06:44:06,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:44:06,073 INFO L93 Difference]: Finished difference Result 605 states and 867 transitions. [2023-11-23 06:44:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:44:06,073 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 06:44:06,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:44:06,076 INFO L225 Difference]: With dead ends: 605 [2023-11-23 06:44:06,076 INFO L226 Difference]: Without dead ends: 389 [2023-11-23 06:44:06,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:44:06,078 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 132 mSDsluCounter, 2430 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:44:06,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 2780 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:44:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-23 06:44:06,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 365. [2023-11-23 06:44:06,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 200 states have (on average 1.24) internal successors, (248), 202 states have internal predecessors, (248), 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 06:44:06,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 531 transitions. [2023-11-23 06:44:06,101 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 531 transitions. Word has length 221 [2023-11-23 06:44:06,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:44:06,103 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 531 transitions. [2023-11-23 06:44:06,103 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 06:44:06,103 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 531 transitions. [2023-11-23 06:44:06,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-23 06:44:06,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:44:06,106 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 06:44:06,126 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 06:44:06,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:06,310 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:44:06,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:44:06,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1065058052, now seen corresponding path program 1 times [2023-11-23 06:44:06,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:44:06,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184171447] [2023-11-23 06:44:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:06,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:44:06,370 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:44:06,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264891628] [2023-11-23 06:44:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:06,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:06,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:44:06,372 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 06:44:06,404 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 06:44:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:07,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 3968 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 06:44:07,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:44:07,148 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 06:44:07,148 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:44:07,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:44:07,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184171447] [2023-11-23 06:44:07,148 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:44:07,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264891628] [2023-11-23 06:44:07,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264891628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:44:07,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:44:07,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:44:07,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932318097] [2023-11-23 06:44:07,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:44:07,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:44:07,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:44:07,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:44:07,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:44:07,152 INFO L87 Difference]: Start difference. First operand 365 states and 531 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 06:44:07,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:44:07,761 INFO L93 Difference]: Finished difference Result 615 states and 879 transitions. [2023-11-23 06:44:07,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 06:44:07,762 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 06:44:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:44:07,765 INFO L225 Difference]: With dead ends: 615 [2023-11-23 06:44:07,765 INFO L226 Difference]: Without dead ends: 389 [2023-11-23 06:44:07,766 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 06:44:07,768 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 23 mSDsluCounter, 1703 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 06:44:07,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 2044 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 06:44:07,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-11-23 06:44:07,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 365. [2023-11-23 06:44:07,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 200 states have (on average 1.235) internal successors, (247), 202 states have internal predecessors, (247), 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 06:44:07,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 530 transitions. [2023-11-23 06:44:07,791 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 530 transitions. Word has length 221 [2023-11-23 06:44:07,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:44:07,791 INFO L495 AbstractCegarLoop]: Abstraction has 365 states and 530 transitions. [2023-11-23 06:44:07,791 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 06:44:07,791 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 530 transitions. [2023-11-23 06:44:07,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2023-11-23 06:44:07,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:44:07,793 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 06:44:07,820 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 06:44:08,006 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,SelfDestructingSolverStorable8 [2023-11-23 06:44:08,007 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:44:08,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:44:08,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2012095938, now seen corresponding path program 1 times [2023-11-23 06:44:08,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:44:08,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451727270] [2023-11-23 06:44:08,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:08,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:44:08,063 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:44:08,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915567212] [2023-11-23 06:44:08,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:08,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:08,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:44:08,065 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 06:44:08,084 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 06:44:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:08,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 3965 conjuncts, 75 conjunts are in the unsatisfiable core [2023-11-23 06:44:08,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:44:08,952 WARN L876 $PredicateComparison]: unable to prove that (exists ((ensure_array_list_has_allocated_data_member_~list.offset Int)) (and (<= ensure_array_list_has_allocated_data_member_~list.offset |c_ensure_array_list_has_allocated_data_member_#in~list.offset|) (= (store |c_old(#memory_$Pointer$#4.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#4.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset (select (select |c_#memory_$Pointer$#4.base| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset))) |c_#memory_$Pointer$#4.base|) (= (store |c_old(#memory_$Pointer$#4.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#4.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset (select (select |c_#memory_$Pointer$#4.offset| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) ensure_array_list_has_allocated_data_member_~list.offset))) |c_#memory_$Pointer$#4.offset|))) is different from true [2023-11-23 06:44:08,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 06:44:08,986 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 06:44:08,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 06:44:08,991 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 06:44:09,197 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 211 proven. 4 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-23 06:44:09,197 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:44:15,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:44:15,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451727270] [2023-11-23 06:44:15,944 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:44:15,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915567212] [2023-11-23 06:44:15,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915567212] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:44:15,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:44:15,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-23 06:44:15,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806454011] [2023-11-23 06:44:15,944 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 06:44:15,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 06:44:15,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:44:15,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 06:44:15,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=4, NotChecked=44, Total=600 [2023-11-23 06:44:15,947 INFO L87 Difference]: Start difference. First operand 365 states and 530 transitions. Second operand has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 6 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2023-11-23 06:44:18,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:44:18,530 INFO L93 Difference]: Finished difference Result 878 states and 1284 transitions. [2023-11-23 06:44:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 06:44:18,530 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 6 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) Word has length 221 [2023-11-23 06:44:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:44:18,533 INFO L225 Difference]: With dead ends: 878 [2023-11-23 06:44:18,533 INFO L226 Difference]: Without dead ends: 502 [2023-11-23 06:44:18,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 378 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=143, Invalid=727, Unknown=4, NotChecked=56, Total=930 [2023-11-23 06:44:18,535 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 188 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 145 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 2678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 536 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:44:18,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1142 Invalid, 2678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1982 Invalid, 15 Unknown, 536 Unchecked, 2.4s Time] [2023-11-23 06:44:18,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2023-11-23 06:44:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 369. [2023-11-23 06:44:18,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 203 states have (on average 1.2266009852216748) internal successors, (249), 205 states have internal predecessors, (249), 137 states have call successors, (137), 25 states have call predecessors, (137), 28 states have return successors, (144), 138 states have call predecessors, (144), 136 states have call successors, (144) [2023-11-23 06:44:18,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 530 transitions. [2023-11-23 06:44:18,560 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 530 transitions. Word has length 221 [2023-11-23 06:44:18,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:44:18,560 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 530 transitions. [2023-11-23 06:44:18,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 6 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2023-11-23 06:44:18,560 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 530 transitions. [2023-11-23 06:44:18,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-23 06:44:18,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:44:18,562 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 06:44:18,580 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 06:44:18,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 06:44:18,780 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:44:18,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:44:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash 161349644, now seen corresponding path program 1 times [2023-11-23 06:44:18,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:44:18,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628573085] [2023-11-23 06:44:18,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:18,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:44:18,896 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:44:18,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [367494105] [2023-11-23 06:44:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:18,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:18,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:44:18,897 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 06:44:18,916 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 06:44:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:19,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 4002 conjuncts, 119 conjunts are in the unsatisfiable core [2023-11-23 06:44:19,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:44:19,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:44:19,678 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 25 treesize of output 13 [2023-11-23 06:44:19,845 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 9 treesize of output 3 [2023-11-23 06:44:20,707 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 113 proven. 130 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-23 06:44:20,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:44:21,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:44:21,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628573085] [2023-11-23 06:44:21,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:44:21,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367494105] [2023-11-23 06:44:21,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367494105] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:44:21,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:44:21,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2023-11-23 06:44:21,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977286491] [2023-11-23 06:44:21,095 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 06:44:21,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-23 06:44:21,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:44:21,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-23 06:44:21,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 06:44:21,097 INFO L87 Difference]: Start difference. First operand 369 states and 530 transitions. Second operand has 30 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 15 states have call successors, (33), 7 states have call predecessors, (33), 11 states have return successors, (31), 14 states have call predecessors, (31), 14 states have call successors, (31) [2023-11-23 06:44:23,314 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 06:44:26,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:44:28,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:44:30,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:44:32,929 WARN L539 Checker$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 06:44:34,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:44:37,174 WARN L539 Checker$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 06:44:39,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:44:42,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:44:44,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:44:46,733 WARN L539 Checker$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 06:44:48,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:44:50,922 WARN L539 Checker$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 06:44:52,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:44:54,027 WARN L539 Checker$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 06:44:56,368 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:44:58,471 WARN L539 Checker$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 06:45:01,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:03,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:05,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:08,112 WARN L539 Checker$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 06:45:10,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:12,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:13,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:45:13,424 INFO L93 Difference]: Finished difference Result 999 states and 1475 transitions. [2023-11-23 06:45:13,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-23 06:45:13,425 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 15 states have call successors, (33), 7 states have call predecessors, (33), 11 states have return successors, (31), 14 states have call predecessors, (31), 14 states have call successors, (31) Word has length 226 [2023-11-23 06:45:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:45:13,428 INFO L225 Difference]: With dead ends: 999 [2023-11-23 06:45:13,428 INFO L226 Difference]: Without dead ends: 675 [2023-11-23 06:45:13,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 191 SyntacticMatches, 18 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1788 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=691, Invalid=5471, Unknown=0, NotChecked=0, Total=6162 [2023-11-23 06:45:13,432 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 801 mSDsluCounter, 3679 mSDsCounter, 0 mSdLazyCounter, 7982 mSolverCounterSat, 777 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 3994 SdHoareTripleChecker+Invalid, 8785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 7982 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:45:13,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 3994 Invalid, 8785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [777 Valid, 7982 Invalid, 26 Unknown, 0 Unchecked, 51.2s Time] [2023-11-23 06:45:13,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-11-23 06:45:13,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 659. [2023-11-23 06:45:13,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 366 states have (on average 1.2404371584699454) internal successors, (454), 373 states have internal predecessors, (454), 235 states have call successors, (235), 51 states have call predecessors, (235), 57 states have return successors, (247), 234 states have call predecessors, (247), 233 states have call successors, (247) [2023-11-23 06:45:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 936 transitions. [2023-11-23 06:45:13,488 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 936 transitions. Word has length 226 [2023-11-23 06:45:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:45:13,489 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 936 transitions. [2023-11-23 06:45:13,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 3.185185185185185) internal successors, (86), 26 states have internal predecessors, (86), 15 states have call successors, (33), 7 states have call predecessors, (33), 11 states have return successors, (31), 14 states have call predecessors, (31), 14 states have call successors, (31) [2023-11-23 06:45:13,489 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 936 transitions. [2023-11-23 06:45:13,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-23 06:45:13,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:45:13,491 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:13,508 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 06:45:13,704 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,SelfDestructingSolverStorable10 [2023-11-23 06:45:13,704 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:45:13,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:45:13,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1010763450, now seen corresponding path program 1 times [2023-11-23 06:45:13,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:45:13,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687983842] [2023-11-23 06:45:13,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:13,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:45:13,769 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:45:13,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436028259] [2023-11-23 06:45:13,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:13,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:13,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:45:13,771 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 06:45:13,772 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 06:45:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:14,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 4027 conjuncts, 130 conjunts are in the unsatisfiable core [2023-11-23 06:45:14,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:45:14,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:45:14,546 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 25 treesize of output 13 [2023-11-23 06:45:15,814 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 154 proven. 39 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2023-11-23 06:45:15,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:45:16,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:45:16,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687983842] [2023-11-23 06:45:16,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:45:16,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436028259] [2023-11-23 06:45:16,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436028259] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:45:16,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:45:16,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-11-23 06:45:16,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968213364] [2023-11-23 06:45:16,123 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 06:45:16,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-23 06:45:16,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:45:16,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-23 06:45:16,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=0, NotChecked=0, Total=870 [2023-11-23 06:45:16,124 INFO L87 Difference]: Start difference. First operand 659 states and 936 transitions. Second operand has 25 states, 23 states have (on average 3.652173913043478) internal successors, (84), 22 states have internal predecessors, (84), 14 states have call successors, (33), 7 states have call predecessors, (33), 9 states have return successors, (31), 14 states have call predecessors, (31), 13 states have call successors, (31) [2023-11-23 06:45:22,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:45:22,902 INFO L93 Difference]: Finished difference Result 1956 states and 2986 transitions. [2023-11-23 06:45:22,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-23 06:45:22,902 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 3.652173913043478) internal successors, (84), 22 states have internal predecessors, (84), 14 states have call successors, (33), 7 states have call predecessors, (33), 9 states have return successors, (31), 14 states have call predecessors, (31), 13 states have call successors, (31) Word has length 236 [2023-11-23 06:45:22,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:45:22,908 INFO L225 Difference]: With dead ends: 1956 [2023-11-23 06:45:22,908 INFO L226 Difference]: Without dead ends: 1368 [2023-11-23 06:45:22,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 208 SyntacticMatches, 20 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1797 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=972, Invalid=4728, Unknown=0, NotChecked=0, Total=5700 [2023-11-23 06:45:22,913 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 955 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 6560 mSolverCounterSat, 776 mSolverCounterUnsat, 122 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 2890 SdHoareTripleChecker+Invalid, 7458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 776 IncrementalHoareTripleChecker+Valid, 6560 IncrementalHoareTripleChecker+Invalid, 122 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:45:22,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 2890 Invalid, 7458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [776 Valid, 6560 Invalid, 122 Unknown, 0 Unchecked, 5.4s Time] [2023-11-23 06:45:22,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2023-11-23 06:45:22,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1310. [2023-11-23 06:45:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 728 states have (on average 1.2486263736263736) internal successors, (909), 743 states have internal predecessors, (909), 472 states have call successors, (472), 93 states have call predecessors, (472), 109 states have return successors, (555), 473 states have call predecessors, (555), 468 states have call successors, (555) [2023-11-23 06:45:23,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 1936 transitions. [2023-11-23 06:45:23,005 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 1936 transitions. Word has length 236 [2023-11-23 06:45:23,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:45:23,005 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 1936 transitions. [2023-11-23 06:45:23,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 3.652173913043478) internal successors, (84), 22 states have internal predecessors, (84), 14 states have call successors, (33), 7 states have call predecessors, (33), 9 states have return successors, (31), 14 states have call predecessors, (31), 13 states have call successors, (31) [2023-11-23 06:45:23,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 1936 transitions. [2023-11-23 06:45:23,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-23 06:45:23,007 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:45:23,007 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:45:23,028 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 06:45:23,220 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,SelfDestructingSolverStorable11 [2023-11-23 06:45:23,220 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:45:23,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:45:23,221 INFO L85 PathProgramCache]: Analyzing trace with hash 675760692, now seen corresponding path program 1 times [2023-11-23 06:45:23,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:45:23,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131386558] [2023-11-23 06:45:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:23,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:45:23,279 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:45:23,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1512562887] [2023-11-23 06:45:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:23,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:23,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:45:23,280 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 06:45:23,324 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 06:45:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:23,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 4002 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-23 06:45:23,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:45:24,056 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 06:45:24,095 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 26 treesize of output 14 [2023-11-23 06:45:24,194 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2023-11-23 06:45:24,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:45:24,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:45:24,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131386558] [2023-11-23 06:45:24,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:45:24,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512562887] [2023-11-23 06:45:24,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512562887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:45:24,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:45:24,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-11-23 06:45:24,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317630607] [2023-11-23 06:45:24,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:45:24,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 06:45:24,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:45:24,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 06:45:24,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:45:24,197 INFO L87 Difference]: Start difference. First operand 1310 states and 1936 transitions. Second operand has 14 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 7 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2023-11-23 06:45:26,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:28,892 WARN L539 Checker$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 06:45:31,370 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:33,393 WARN L539 Checker$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 06:45:35,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:37,513 WARN L539 Checker$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 06:45:39,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:40,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:42,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:44,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:47,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:49,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:51,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:53,514 WARN L539 Checker$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 06:45:55,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:57,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:45:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:45:58,374 INFO L93 Difference]: Finished difference Result 1902 states and 2819 transitions. [2023-11-23 06:45:58,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 06:45:58,375 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 7 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) Word has length 236 [2023-11-23 06:45:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:45:58,379 INFO L225 Difference]: With dead ends: 1902 [2023-11-23 06:45:58,379 INFO L226 Difference]: Without dead ends: 1028 [2023-11-23 06:45:58,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2023-11-23 06:45:58,383 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 394 mSDsluCounter, 1644 mSDsCounter, 0 mSdLazyCounter, 3421 mSolverCounterSat, 306 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 3743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 3421 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:45:58,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1957 Invalid, 3743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 3421 Invalid, 16 Unknown, 0 Unchecked, 33.9s Time] [2023-11-23 06:45:58,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2023-11-23 06:45:58,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1017. [2023-11-23 06:45:58,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 570 states have (on average 1.2473684210526317) internal successors, (711), 581 states have internal predecessors, (711), 352 states have call successors, (352), 79 states have call predecessors, (352), 94 states have return successors, (422), 356 states have call predecessors, (422), 348 states have call successors, (422) [2023-11-23 06:45:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1485 transitions. [2023-11-23 06:45:58,463 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1485 transitions. Word has length 236 [2023-11-23 06:45:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:45:58,464 INFO L495 AbstractCegarLoop]: Abstraction has 1017 states and 1485 transitions. [2023-11-23 06:45:58,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 7 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (30), 7 states have call predecessors, (30), 7 states have call successors, (30) [2023-11-23 06:45:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1485 transitions. [2023-11-23 06:45:58,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2023-11-23 06:45:58,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:45:58,474 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 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 06:45:58,500 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 06:45:58,684 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,SelfDestructingSolverStorable12 [2023-11-23 06:45:58,684 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:45:58,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:45:58,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1441786688, now seen corresponding path program 1 times [2023-11-23 06:45:58,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:45:58,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332231785] [2023-11-23 06:45:58,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:58,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:45:58,745 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:45:58,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759319618] [2023-11-23 06:45:58,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:45:58,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:45:58,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:45:58,746 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 06:45:58,747 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 06:45:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:45:59,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 4032 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 06:45:59,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:46:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 507 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2023-11-23 06:46:00,010 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:46:00,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:46:00,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332231785] [2023-11-23 06:46:00,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:46:00,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759319618] [2023-11-23 06:46:00,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759319618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:46:00,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:46:00,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:46:00,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425784550] [2023-11-23 06:46:00,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:46:00,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:46:00,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:46:00,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:46:00,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:46:00,014 INFO L87 Difference]: Start difference. First operand 1017 states and 1485 transitions. Second operand has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 06:46:00,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:46:00,414 INFO L93 Difference]: Finished difference Result 1725 states and 2479 transitions. [2023-11-23 06:46:00,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:46:00,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 3 states have call successors, (30) Word has length 238 [2023-11-23 06:46:00,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:46:00,418 INFO L225 Difference]: With dead ends: 1725 [2023-11-23 06:46:00,418 INFO L226 Difference]: Without dead ends: 783 [2023-11-23 06:46:00,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 234 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 06:46:00,421 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 2 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:46:00,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1204 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:46:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2023-11-23 06:46:00,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 783. [2023-11-23 06:46:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 447 states have (on average 1.232662192393736) internal successors, (551), 457 states have internal predecessors, (551), 245 states have call successors, (245), 78 states have call predecessors, (245), 90 states have return successors, (286), 247 states have call predecessors, (286), 241 states have call successors, (286) [2023-11-23 06:46:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 1082 transitions. [2023-11-23 06:46:00,480 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 1082 transitions. Word has length 238 [2023-11-23 06:46:00,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:46:00,480 INFO L495 AbstractCegarLoop]: Abstraction has 783 states and 1082 transitions. [2023-11-23 06:46:00,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.75) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 2 states have call predecessors, (30), 3 states have call successors, (30) [2023-11-23 06:46:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 1082 transitions. [2023-11-23 06:46:00,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2023-11-23 06:46:00,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:46:00,482 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2023-11-23 06:46:00,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 06:46:00,696 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,SelfDestructingSolverStorable13 [2023-11-23 06:46:00,696 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:46:00,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:46:00,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1934162203, now seen corresponding path program 1 times [2023-11-23 06:46:00,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:46:00,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107016091] [2023-11-23 06:46:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:00,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:46:00,775 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:46:00,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312270795] [2023-11-23 06:46:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:46:00,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:46:00,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:46:00,777 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 06:46:00,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process Killed by 15