./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_swap_contents_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_linked_list_swap_contents_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 8febf35c76ed48a5c945e59e1f965c3d3c5f40f9ba15f2605d26962d50330db8 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 07:33:00,686 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 07:33:00,782 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 07:33:00,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 07:33:00,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 07:33:00,798 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 07:33:00,799 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 07:33:00,799 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 07:33:00,799 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 07:33:00,800 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 07:33:00,800 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 07:33:00,800 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 07:33:00,801 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 07:33:00,801 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 07:33:00,801 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 07:33:00,802 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 07:33:00,802 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 07:33:00,802 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 07:33:00,803 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 07:33:00,803 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 07:33:00,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 07:33:00,804 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 07:33:00,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 07:33:00,805 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 07:33:00,805 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 07:33:00,805 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 07:33:00,806 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 07:33:00,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 07:33:00,806 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:33:00,806 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 07:33:00,807 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 07:33:00,807 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 07:33:00,807 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 07:33:00,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 07:33:00,808 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 07:33:00,808 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 07:33:00,808 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 07:33:00,809 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 07:33:00,809 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 07:33:00,809 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8febf35c76ed48a5c945e59e1f965c3d3c5f40f9ba15f2605d26962d50330db8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 07:33:00,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 07:33:01,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 07:33:01,022 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 07:33:01,024 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 07:33:01,024 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 07:33:01,025 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_linked_list_swap_contents_harness_negated.i [2023-11-23 07:33:02,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 07:33:02,413 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 07:33:02,414 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_linked_list_swap_contents_harness_negated.i [2023-11-23 07:33:02,439 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34fcf1d46/7b64ec67c33847b1a4626adbcccde3e5/FLAGf616f41d2 [2023-11-23 07:33:02,452 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34fcf1d46/7b64ec67c33847b1a4626adbcccde3e5 [2023-11-23 07:33:02,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 07:33:02,455 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 07:33:02,457 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 07:33:02,457 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 07:33:02,460 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 07:33:02,462 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:33:02" (1/1) ... [2023-11-23 07:33:02,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@197b2889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:02, skipping insertion in model container [2023-11-23 07:33:02,463 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 07:33:02" (1/1) ... [2023-11-23 07:33:02,533 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 07:33:02,740 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_linked_list_swap_contents_harness_negated.i[4503,4516] [2023-11-23 07:33:02,747 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_linked_list_swap_contents_harness_negated.i[4563,4576] [2023-11-23 07:33:03,252 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,254 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,255 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,256 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,257 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,265 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,270 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,288 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,288 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,290 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,290 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,291 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,291 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,518 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:33:03,525 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:33:03,540 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:33:03,541 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:33:03,542 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:33:03,542 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:33:03,543 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:33:03,543 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:33:03,544 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:33:03,553 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:33:03,640 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:33:03,652 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 07:33:03,661 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_linked_list_swap_contents_harness_negated.i[4503,4516] [2023-11-23 07:33:03,662 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_linked_list_swap_contents_harness_negated.i[4563,4576] [2023-11-23 07:33:03,705 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,706 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,706 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,706 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,707 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,722 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,723 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,724 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,725 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,725 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,726 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,727 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,727 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 07:33:03,772 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 07:33:03,772 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 07:33:03,773 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 07:33:03,774 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 07:33:03,774 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 07:33:03,775 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 07:33:03,776 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 07:33:03,777 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 07:33:03,777 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 07:33:03,778 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 07:33:03,830 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 07:33:03,936 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,936 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,936 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,936 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,937 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,937 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,937 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,937 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,937 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,937 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,937 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,937 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,937 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,938 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,938 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,938 WARN L675 CHandler]: The function aws_array_list_ensure_capacity is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 07:33:03,944 INFO L206 MainTranslator]: Completed translation [2023-11-23 07:33:03,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03 WrapperNode [2023-11-23 07:33:03,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 07:33:03,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 07:33:03,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 07:33:03,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 07:33:03,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (1/1) ... [2023-11-23 07:33:04,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (1/1) ... [2023-11-23 07:33:04,070 INFO L138 Inliner]: procedures = 678, calls = 1080, calls flagged for inlining = 51, calls inlined = 5, statements flattened = 212 [2023-11-23 07:33:04,071 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 07:33:04,071 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 07:33:04,071 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 07:33:04,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 07:33:04,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (1/1) ... [2023-11-23 07:33:04,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (1/1) ... [2023-11-23 07:33:04,091 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (1/1) ... [2023-11-23 07:33:04,124 INFO L188 MemorySlicer]: Split 68 memory accesses to 5 slices as follows [2, 5, 7, 7, 47]. 69 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [2, 5, 4, 4, 0]. The 18 writes are split as follows [0, 0, 0, 0, 18]. [2023-11-23 07:33:04,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (1/1) ... [2023-11-23 07:33:04,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (1/1) ... [2023-11-23 07:33:04,140 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (1/1) ... [2023-11-23 07:33:04,160 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (1/1) ... [2023-11-23 07:33:04,163 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (1/1) ... [2023-11-23 07:33:04,165 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (1/1) ... [2023-11-23 07:33:04,175 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 07:33:04,176 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 07:33:04,176 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 07:33:04,176 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 07:33:04,177 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (1/1) ... [2023-11-23 07:33:04,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 07:33:04,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:33:04,202 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 07:33:04,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 07:33:04,241 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_init [2023-11-23 07:33:04,242 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_init [2023-11-23 07:33:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 07:33:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 07:33:04,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 07:33:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2023-11-23 07:33:04,242 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2023-11-23 07:33:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_linked_list_is_allocated [2023-11-23 07:33:04,243 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_linked_list_is_allocated [2023-11-23 07:33:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 07:33:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2023-11-23 07:33:04,243 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2023-11-23 07:33:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 07:33:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 07:33:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 07:33:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 07:33:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 07:33:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 07:33:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 07:33:04,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 07:33:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_empty [2023-11-23 07:33:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_empty [2023-11-23 07:33:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 07:33:04,245 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 07:33:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 07:33:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 07:33:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 07:33:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 07:33:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 07:33:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 07:33:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 07:33:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 07:33:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 07:33:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 07:33:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 07:33:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 07:33:04,247 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 07:33:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 07:33:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 07:33:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 07:33:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 07:33:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 07:33:04,486 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 07:33:04,488 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 07:33:04,849 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 07:33:04,892 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 07:33:04,892 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 07:33:04,893 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:33:04 BoogieIcfgContainer [2023-11-23 07:33:04,893 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 07:33:04,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 07:33:04,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 07:33:04,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 07:33:04,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 07:33:02" (1/3) ... [2023-11-23 07:33:04,897 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474e8ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:33:04, skipping insertion in model container [2023-11-23 07:33:04,897 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 07:33:03" (2/3) ... [2023-11-23 07:33:04,898 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474e8ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 07:33:04, skipping insertion in model container [2023-11-23 07:33:04,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 07:33:04" (3/3) ... [2023-11-23 07:33:04,898 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_swap_contents_harness_negated.i [2023-11-23 07:33:04,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 07:33:04,911 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 07:33:04,954 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 07:33:04,960 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;@6db265c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 07:33:04,961 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 07:33:04,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 62 states have internal predecessors, (80), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 07:33:04,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 07:33:04,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:33:04,976 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:33:04,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:33:04,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:33:04,980 INFO L85 PathProgramCache]: Analyzing trace with hash -368461878, now seen corresponding path program 1 times [2023-11-23 07:33:04,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:33:04,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595303746] [2023-11-23 07:33:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:04,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:33:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 07:33:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:05,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:33:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:33:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:33:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:33:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:33:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:33:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-23 07:33:05,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:33:05,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595303746] [2023-11-23 07:33:05,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595303746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:33:05,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936600829] [2023-11-23 07:33:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:05,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:33:05,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:33:05,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:33:05,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 07:33:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 07:33:06,016 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:33:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-23 07:33:06,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:33:06,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936600829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:33:06,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:33:06,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 5 [2023-11-23 07:33:06,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202761431] [2023-11-23 07:33:06,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:33:06,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 07:33:06,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:33:06,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 07:33:06,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:33:06,081 INFO L87 Difference]: Start difference. First operand has 103 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 62 states have internal predecessors, (80), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 07:33:06,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:33:06,137 INFO L93 Difference]: Finished difference Result 204 states and 325 transitions. [2023-11-23 07:33:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 07:33:06,139 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 95 [2023-11-23 07:33:06,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:33:06,147 INFO L225 Difference]: With dead ends: 204 [2023-11-23 07:33:06,147 INFO L226 Difference]: Without dead ends: 99 [2023-11-23 07:33:06,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:33:06,156 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:33:06,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 07:33:06,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-23 07:33:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2023-11-23 07:33:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 60 states have internal predecessors, (73), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 07:33:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 139 transitions. [2023-11-23 07:33:06,191 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 139 transitions. Word has length 95 [2023-11-23 07:33:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:33:06,191 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 139 transitions. [2023-11-23 07:33:06,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 07:33:06,192 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 139 transitions. [2023-11-23 07:33:06,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 07:33:06,194 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:33:06,194 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:33:06,210 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 07:33:06,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-23 07:33:06,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:33:06,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:33:06,410 INFO L85 PathProgramCache]: Analyzing trace with hash -118777200, now seen corresponding path program 1 times [2023-11-23 07:33:06,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:33:06,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048907166] [2023-11-23 07:33:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:06,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:33:06,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:06,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 07:33:06,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:33:06,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:33:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:33:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:33:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:33:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:33:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-23 07:33:06,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:33:06,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048907166] [2023-11-23 07:33:06,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048907166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:33:06,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131234536] [2023-11-23 07:33:06,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:06,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:33:06,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:33:06,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:33:06,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 07:33:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,140 INFO L262 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:33:07,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:33:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 07:33:07,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:33:07,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131234536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:33:07,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:33:07,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-23 07:33:07,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101108111] [2023-11-23 07:33:07,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:33:07,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:33:07,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:33:07,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:33:07,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:33:07,173 INFO L87 Difference]: Start difference. First operand 99 states and 139 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 07:33:07,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:33:07,236 INFO L93 Difference]: Finished difference Result 195 states and 287 transitions. [2023-11-23 07:33:07,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:33:07,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2023-11-23 07:33:07,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:33:07,238 INFO L225 Difference]: With dead ends: 195 [2023-11-23 07:33:07,239 INFO L226 Difference]: Without dead ends: 111 [2023-11-23 07:33:07,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:33:07,240 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 21 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:33:07,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 383 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 07:33:07,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-23 07:33:07,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2023-11-23 07:33:07,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 58 states have (on average 1.293103448275862) internal successors, (75), 62 states have internal predecessors, (75), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 07:33:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 141 transitions. [2023-11-23 07:33:07,250 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 141 transitions. Word has length 95 [2023-11-23 07:33:07,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:33:07,251 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 141 transitions. [2023-11-23 07:33:07,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 07:33:07,251 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 141 transitions. [2023-11-23 07:33:07,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 07:33:07,252 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:33:07,253 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:33:07,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 07:33:07,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-23 07:33:07,475 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:33:07,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:33:07,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1123734738, now seen corresponding path program 1 times [2023-11-23 07:33:07,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:33:07,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092562667] [2023-11-23 07:33:07,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:07,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:33:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:07,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 07:33:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:07,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:33:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:33:07,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:33:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:33:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:33:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:07,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:33:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-23 07:33:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:33:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092562667] [2023-11-23 07:33:07,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092562667] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:33:07,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390735492] [2023-11-23 07:33:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:07,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:33:07,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:33:07,853 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:33:07,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 07:33:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:33:08,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:33:08,128 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2023-11-23 07:33:08,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:33:08,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390735492] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:33:08,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:33:08,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-23 07:33:08,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690093975] [2023-11-23 07:33:08,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:33:08,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:33:08,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:33:08,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:33:08,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:33:08,131 INFO L87 Difference]: Start difference. First operand 101 states and 141 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 07:33:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:33:08,193 INFO L93 Difference]: Finished difference Result 195 states and 285 transitions. [2023-11-23 07:33:08,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:33:08,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2023-11-23 07:33:08,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:33:08,200 INFO L225 Difference]: With dead ends: 195 [2023-11-23 07:33:08,201 INFO L226 Difference]: Without dead ends: 109 [2023-11-23 07:33:08,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:33:08,207 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 12 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:33:08,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 380 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 07:33:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-23 07:33:08,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2023-11-23 07:33:08,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 64 states have internal predecessors, (77), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 07:33:08,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 143 transitions. [2023-11-23 07:33:08,223 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 143 transitions. Word has length 95 [2023-11-23 07:33:08,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:33:08,223 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 143 transitions. [2023-11-23 07:33:08,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 07:33:08,223 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 143 transitions. [2023-11-23 07:33:08,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 07:33:08,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:33:08,228 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:33:08,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 07:33:08,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:33:08,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:33:08,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:33:08,443 INFO L85 PathProgramCache]: Analyzing trace with hash 146257812, now seen corresponding path program 1 times [2023-11-23 07:33:08,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:33:08,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926151136] [2023-11-23 07:33:08,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:08,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:33:08,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 07:33:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:08,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:33:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:33:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:33:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:33:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:33:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:33:08,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:08,736 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2023-11-23 07:33:08,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:33:08,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926151136] [2023-11-23 07:33:08,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926151136] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:33:08,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673263032] [2023-11-23 07:33:08,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:08,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:33:08,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:33:08,752 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:33:08,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 07:33:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:33:09,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:33:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:33:09,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:33:09,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673263032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:33:09,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:33:09,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2023-11-23 07:33:09,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603103658] [2023-11-23 07:33:09,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:33:09,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:33:09,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:33:09,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:33:09,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 07:33:09,019 INFO L87 Difference]: Start difference. First operand 103 states and 143 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 07:33:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:33:09,058 INFO L93 Difference]: Finished difference Result 195 states and 283 transitions. [2023-11-23 07:33:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:33:09,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2023-11-23 07:33:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:33:09,060 INFO L225 Difference]: With dead ends: 195 [2023-11-23 07:33:09,060 INFO L226 Difference]: Without dead ends: 107 [2023-11-23 07:33:09,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 07:33:09,061 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 3 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:33:09,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 379 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 07:33:09,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-23 07:33:09,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2023-11-23 07:33:09,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 67 states have internal predecessors, (80), 34 states have call successors, (34), 8 states have call predecessors, (34), 8 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-23 07:33:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 146 transitions. [2023-11-23 07:33:09,068 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 146 transitions. Word has length 95 [2023-11-23 07:33:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:33:09,068 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 146 transitions. [2023-11-23 07:33:09,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 07:33:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 146 transitions. [2023-11-23 07:33:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 07:33:09,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:33:09,070 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:33:09,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 07:33:09,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:33:09,283 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:33:09,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:33:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1383228118, now seen corresponding path program 1 times [2023-11-23 07:33:09,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:33:09,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139286589] [2023-11-23 07:33:09,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:09,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:33:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 07:33:09,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:33:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:33:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:33:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:33:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:33:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:09,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:33:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 07:33:09,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:33:09,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139286589] [2023-11-23 07:33:09,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139286589] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:33:09,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999853304] [2023-11-23 07:33:09,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:09,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:33:09,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:33:09,604 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:33:09,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 07:33:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:09,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:33:09,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:33:09,947 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-23 07:33:09,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:33:09,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999853304] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:33:09,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:33:09,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-23 07:33:09,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947885220] [2023-11-23 07:33:09,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:33:09,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:33:09,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:33:09,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:33:09,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:33:09,949 INFO L87 Difference]: Start difference. First operand 106 states and 146 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 07:33:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:33:10,081 INFO L93 Difference]: Finished difference Result 204 states and 286 transitions. [2023-11-23 07:33:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:33:10,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 95 [2023-11-23 07:33:10,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:33:10,084 INFO L225 Difference]: With dead ends: 204 [2023-11-23 07:33:10,084 INFO L226 Difference]: Without dead ends: 113 [2023-11-23 07:33:10,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:33:10,085 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 26 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:33:10,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 418 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:33:10,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-23 07:33:10,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-11-23 07:33:10,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 74 states have internal predecessors, (86), 34 states have call successors, (34), 8 states have call predecessors, (34), 9 states have return successors, (36), 32 states have call predecessors, (36), 32 states have call successors, (36) [2023-11-23 07:33:10,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 156 transitions. [2023-11-23 07:33:10,093 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 156 transitions. Word has length 95 [2023-11-23 07:33:10,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:33:10,093 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 156 transitions. [2023-11-23 07:33:10,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 07:33:10,093 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 156 transitions. [2023-11-23 07:33:10,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 07:33:10,094 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:33:10,094 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:33:10,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 07:33:10,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:33:10,308 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:33:10,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:33:10,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1831423530, now seen corresponding path program 1 times [2023-11-23 07:33:10,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:33:10,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536119137] [2023-11-23 07:33:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:10,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:33:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 07:33:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:10,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:33:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:33:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:33:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:33:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:33:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:33:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 07:33:10,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:33:10,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536119137] [2023-11-23 07:33:10,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536119137] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:33:10,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553881311] [2023-11-23 07:33:10,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:10,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:33:10,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:33:10,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 07:33:10,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 07:33:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:10,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 07:33:10,956 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:33:11,017 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-23 07:33:11,017 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:33:11,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553881311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:33:11,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:33:11,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-11-23 07:33:11,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492017395] [2023-11-23 07:33:11,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:33:11,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 07:33:11,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:33:11,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 07:33:11,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 07:33:11,019 INFO L87 Difference]: Start difference. First operand 113 states and 156 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 07:33:11,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:33:11,120 INFO L93 Difference]: Finished difference Result 208 states and 287 transitions. [2023-11-23 07:33:11,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 07:33:11,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 95 [2023-11-23 07:33:11,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:33:11,121 INFO L225 Difference]: With dead ends: 208 [2023-11-23 07:33:11,121 INFO L226 Difference]: Without dead ends: 113 [2023-11-23 07:33:11,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 07:33:11,122 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 25 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 07:33:11,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 429 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 07:33:11,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-23 07:33:11,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-11-23 07:33:11,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 74 states have internal predecessors, (86), 34 states have call successors, (34), 8 states have call predecessors, (34), 9 states have return successors, (33), 32 states have call predecessors, (33), 32 states have call successors, (33) [2023-11-23 07:33:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 153 transitions. [2023-11-23 07:33:11,129 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 153 transitions. Word has length 95 [2023-11-23 07:33:11,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:33:11,129 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 153 transitions. [2023-11-23 07:33:11,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 07:33:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 153 transitions. [2023-11-23 07:33:11,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-23 07:33:11,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:33:11,130 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:33:11,161 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 07:33:11,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:33:11,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:33:11,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:33:11,345 INFO L85 PathProgramCache]: Analyzing trace with hash -171841330, now seen corresponding path program 1 times [2023-11-23 07:33:11,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:33:11,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750307686] [2023-11-23 07:33:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:33:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 07:33:11,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:11,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:33:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 07:33:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 07:33:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:33:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-23 07:33:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:33:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:33:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-23 07:33:11,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-23 07:33:11,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:33:11,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750307686] [2023-11-23 07:33:11,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750307686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:33:11,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328344763] [2023-11-23 07:33:11,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:33:11,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:33:11,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:33:11,878 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 07:33:11,911 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 07:33:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:33:12,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-23 07:33:12,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:33:12,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-23 07:33:12,273 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 22 treesize of output 7 [2023-11-23 07:33:12,277 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 24 treesize of output 9 [2023-11-23 07:33:12,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-23 07:33:12,410 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 16 treesize of output 11 [2023-11-23 07:33:53,044 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 17 treesize of output 9 [2023-11-23 07:33:53,047 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 15 treesize of output 7 [2023-11-23 07:33:53,075 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 07:33:53,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 07:33:53,241 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_2350 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#b~0#1.base| v_ArrVal_2350) |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#a~0#1.base|) |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#a~0#1.offset|) (+ |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#a~0#1.offset| 16))) (forall ((v_ArrVal_2349 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#b~0#1.base| v_ArrVal_2349) |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#a~0#1.base|) |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#a~0#1.offset|) |c_ULTIMATE.start_aws_linked_list_swap_contents_harness_~#a~0#1.base|))) is different from false [2023-11-23 07:33:53,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328344763] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:33:53,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 07:33:53,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 15] total 20 [2023-11-23 07:33:53,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132388395] [2023-11-23 07:33:53,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 07:33:53,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 07:33:53,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:33:53,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 07:33:53,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=326, Unknown=6, NotChecked=36, Total=420 [2023-11-23 07:33:53,246 INFO L87 Difference]: Start difference. First operand 113 states and 153 transitions. Second operand has 20 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 9 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2023-11-23 07:33:55,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:33:57,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:01,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:03,379 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:05,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:07,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:09,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:11,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:15,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:19,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:21,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:23,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:27,700 WARN L539 Checker$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 07:34:29,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:31,769 WARN L539 Checker$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 07:34:33,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:50,245 WARN L539 Checker$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 07:34:52,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:54,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:56,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:34:58,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:00,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:02,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:04,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:06,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:08,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:10,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:12,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:14,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:16,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:18,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:26,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:28,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:30,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:32,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:34,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:36,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:38,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:40,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:42,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:44,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:46,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:48,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:50,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:52,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:54,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:56,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:35:58,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:00,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:02,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:04,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:06,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:08,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:10,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:13,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:14,666 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:16,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:18,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:20,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:22,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:24,884 WARN L539 Checker$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 07:36:26,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:29,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:31,016 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:33,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:35,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:37,045 WARN L539 Checker$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 07:36:39,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:41,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:43,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:45,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:48,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:50,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:52,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:54,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:56,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:36:58,375 WARN L539 Checker$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 07:37:00,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:02,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:04,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:06,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:08,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:10,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:12,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:14,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:16,199 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:18,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:20,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:22,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:24,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:26,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:28,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:30,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 07:37:30,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:37:30,563 INFO L93 Difference]: Finished difference Result 333 states and 471 transitions. [2023-11-23 07:37:30,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-23 07:37:30,564 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 9 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 95 [2023-11-23 07:37:30,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:37:30,565 INFO L225 Difference]: With dead ends: 333 [2023-11-23 07:37:30,565 INFO L226 Difference]: Without dead ends: 224 [2023-11-23 07:37:30,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 167 SyntacticMatches, 7 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 69.5s TimeCoverageRelationStatistics Valid=199, Invalid=1267, Unknown=20, NotChecked=74, Total=1560 [2023-11-23 07:37:30,567 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 266 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 1873 mSolverCounterSat, 183 mSolverCounterUnsat, 95 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 187.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 2151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 1873 IncrementalHoareTripleChecker+Invalid, 95 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 188.2s IncrementalHoareTripleChecker+Time [2023-11-23 07:37:30,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 702 Invalid, 2151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 1873 Invalid, 95 Unknown, 0 Unchecked, 188.2s Time] [2023-11-23 07:37:30,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2023-11-23 07:37:30,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 220. [2023-11-23 07:37:30,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 132 states have (on average 1.2575757575757576) internal successors, (166), 140 states have internal predecessors, (166), 69 states have call successors, (69), 16 states have call predecessors, (69), 18 states have return successors, (81), 63 states have call predecessors, (81), 65 states have call successors, (81) [2023-11-23 07:37:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 316 transitions. [2023-11-23 07:37:30,588 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 316 transitions. Word has length 95 [2023-11-23 07:37:30,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:37:30,588 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 316 transitions. [2023-11-23 07:37:30,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 4.933333333333334) internal successors, (74), 15 states have internal predecessors, (74), 9 states have call successors, (24), 5 states have call predecessors, (24), 7 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2023-11-23 07:37:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 316 transitions. [2023-11-23 07:37:30,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 07:37:30,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:37:30,589 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:37:30,609 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 07:37:30,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:37:30,790 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:37:30,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:37:30,791 INFO L85 PathProgramCache]: Analyzing trace with hash 38953126, now seen corresponding path program 1 times [2023-11-23 07:37:30,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:37:30,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820808027] [2023-11-23 07:37:30,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:37:30,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:37:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:31,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:37:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:37:31,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:37:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:37:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 07:37:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 07:37:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-23 07:37:31,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 07:37:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:31,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-23 07:37:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-23 07:37:31,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:37:31,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820808027] [2023-11-23 07:37:31,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820808027] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:37:31,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451633330] [2023-11-23 07:37:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:37:31,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:37:31,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:37:31,171 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 07:37:31,172 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 07:37:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:31,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 07:37:31,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:37:31,617 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-23 07:37:31,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:37:31,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451633330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:37:31,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:37:31,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2023-11-23 07:37:31,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48851308] [2023-11-23 07:37:31,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:37:31,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 07:37:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:37:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 07:37:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-23 07:37:31,622 INFO L87 Difference]: Start difference. First operand 220 states and 316 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 07:37:32,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:37:32,063 INFO L93 Difference]: Finished difference Result 417 states and 611 transitions. [2023-11-23 07:37:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 07:37:32,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 98 [2023-11-23 07:37:32,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:37:32,065 INFO L225 Difference]: With dead ends: 417 [2023-11-23 07:37:32,065 INFO L226 Difference]: Without dead ends: 226 [2023-11-23 07:37:32,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-11-23 07:37:32,067 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 53 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:37:32,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 566 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:37:32,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-23 07:37:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2023-11-23 07:37:32,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 136 states have (on average 1.25) internal successors, (170), 146 states have internal predecessors, (170), 69 states have call successors, (69), 16 states have call predecessors, (69), 20 states have return successors, (89), 63 states have call predecessors, (89), 65 states have call successors, (89) [2023-11-23 07:37:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 328 transitions. [2023-11-23 07:37:32,101 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 328 transitions. Word has length 98 [2023-11-23 07:37:32,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:37:32,102 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 328 transitions. [2023-11-23 07:37:32,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 07:37:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 328 transitions. [2023-11-23 07:37:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-23 07:37:32,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:37:32,103 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:37:32,134 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 07:37:32,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-23 07:37:32,318 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:37:32,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:37:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash -482839079, now seen corresponding path program 1 times [2023-11-23 07:37:32,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:37:32,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599156647] [2023-11-23 07:37:32,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:37:32,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:37:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:32,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:37:32,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:37:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:37:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:37:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-23 07:37:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 07:37:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 07:37:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-23 07:37:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-23 07:37:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:32,720 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-23 07:37:32,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:37:32,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599156647] [2023-11-23 07:37:32,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599156647] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:37:32,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068688030] [2023-11-23 07:37:32,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:37:32,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:37:32,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:37:32,722 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 07:37:32,757 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 07:37:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:33,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 07:37:33,108 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:37:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-23 07:37:33,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:37:33,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068688030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:37:33,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:37:33,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2023-11-23 07:37:33,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720782252] [2023-11-23 07:37:33,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:37:33,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 07:37:33,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:37:33,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 07:37:33,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2023-11-23 07:37:33,241 INFO L87 Difference]: Start difference. First operand 226 states and 328 transitions. Second operand has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 07:37:33,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:37:33,680 INFO L93 Difference]: Finished difference Result 443 states and 657 transitions. [2023-11-23 07:37:33,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 07:37:33,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 100 [2023-11-23 07:37:33,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:37:33,682 INFO L225 Difference]: With dead ends: 443 [2023-11-23 07:37:33,682 INFO L226 Difference]: Without dead ends: 246 [2023-11-23 07:37:33,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-11-23 07:37:33,684 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 77 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 07:37:33,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 654 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 07:37:33,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-23 07:37:33,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 230. [2023-11-23 07:37:33,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 140 states have (on average 1.2571428571428571) internal successors, (176), 150 states have internal predecessors, (176), 69 states have call successors, (69), 16 states have call predecessors, (69), 20 states have return successors, (89), 63 states have call predecessors, (89), 65 states have call successors, (89) [2023-11-23 07:37:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 334 transitions. [2023-11-23 07:37:33,728 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 334 transitions. Word has length 100 [2023-11-23 07:37:33,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:37:33,729 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 334 transitions. [2023-11-23 07:37:33,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.857142857142857) internal successors, (48), 8 states have internal predecessors, (48), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 07:37:33,729 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 334 transitions. [2023-11-23 07:37:33,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-23 07:37:33,731 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:37:33,731 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:37:33,748 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 07:37:33,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:37:33,946 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:37:33,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:37:33,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1746791809, now seen corresponding path program 1 times [2023-11-23 07:37:33,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:37:33,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672554462] [2023-11-23 07:37:33,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:37:33,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:37:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:34,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:37:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:37:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:37:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:37:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 07:37:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-23 07:37:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 07:37:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-23 07:37:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-23 07:37:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 07:37:34,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:37:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672554462] [2023-11-23 07:37:34,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672554462] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:37:34,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398823620] [2023-11-23 07:37:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:37:34,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:37:34,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:37:34,353 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 07:37:34,372 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 07:37:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:34,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 07:37:34,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:37:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:37:34,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:37:34,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398823620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:37:34,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:37:34,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-11-23 07:37:34,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244379038] [2023-11-23 07:37:34,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:37:34,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 07:37:34,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:37:34,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 07:37:34,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:37:34,747 INFO L87 Difference]: Start difference. First operand 230 states and 334 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 07:37:34,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:37:34,788 INFO L93 Difference]: Finished difference Result 441 states and 664 transitions. [2023-11-23 07:37:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 07:37:34,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2023-11-23 07:37:34,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:37:34,790 INFO L225 Difference]: With dead ends: 441 [2023-11-23 07:37:34,790 INFO L226 Difference]: Without dead ends: 240 [2023-11-23 07:37:34,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:37:34,792 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 4 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:37:34,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 250 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 07:37:34,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-11-23 07:37:34,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 232. [2023-11-23 07:37:34,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 142 states have (on average 1.2535211267605635) internal successors, (178), 152 states have internal predecessors, (178), 69 states have call successors, (69), 16 states have call predecessors, (69), 20 states have return successors, (89), 63 states have call predecessors, (89), 65 states have call successors, (89) [2023-11-23 07:37:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 336 transitions. [2023-11-23 07:37:34,844 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 336 transitions. Word has length 101 [2023-11-23 07:37:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:37:34,844 INFO L495 AbstractCegarLoop]: Abstraction has 232 states and 336 transitions. [2023-11-23 07:37:34,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 07:37:34,845 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 336 transitions. [2023-11-23 07:37:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 07:37:34,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:37:34,846 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:37:34,861 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 07:37:35,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 07:37:35,056 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:37:35,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:37:35,057 INFO L85 PathProgramCache]: Analyzing trace with hash -376465285, now seen corresponding path program 1 times [2023-11-23 07:37:35,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:37:35,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631089191] [2023-11-23 07:37:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:37:35,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:37:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:35,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:37:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:37:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:37:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:37:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:37:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:37:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:37:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 07:37:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 07:37:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 07:37:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-23 07:37:35,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:37:35,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631089191] [2023-11-23 07:37:35,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631089191] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:37:35,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795040295] [2023-11-23 07:37:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:37:35,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:37:35,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:37:35,457 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 07:37:35,483 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 07:37:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:35,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 07:37:35,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:37:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-23 07:37:35,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:37:35,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795040295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:37:35,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:37:35,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-23 07:37:35,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176889908] [2023-11-23 07:37:35,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:37:35,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 07:37:35,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:37:35,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 07:37:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 07:37:35,880 INFO L87 Difference]: Start difference. First operand 232 states and 336 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 07:37:35,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:37:35,926 INFO L93 Difference]: Finished difference Result 443 states and 664 transitions. [2023-11-23 07:37:35,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 07:37:35,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2023-11-23 07:37:35,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:37:35,928 INFO L225 Difference]: With dead ends: 443 [2023-11-23 07:37:35,928 INFO L226 Difference]: Without dead ends: 240 [2023-11-23 07:37:35,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 07:37:35,930 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 3 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 07:37:35,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 384 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 07:37:35,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-11-23 07:37:35,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 236. [2023-11-23 07:37:35,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 146 states have (on average 1.2465753424657535) internal successors, (182), 156 states have internal predecessors, (182), 69 states have call successors, (69), 16 states have call predecessors, (69), 20 states have return successors, (89), 63 states have call predecessors, (89), 65 states have call successors, (89) [2023-11-23 07:37:35,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 340 transitions. [2023-11-23 07:37:35,946 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 340 transitions. Word has length 108 [2023-11-23 07:37:35,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:37:35,946 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 340 transitions. [2023-11-23 07:37:35,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-23 07:37:35,947 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 340 transitions. [2023-11-23 07:37:35,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 07:37:35,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:37:35,948 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:37:35,984 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 07:37:36,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 07:37:36,162 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:37:36,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:37:36,162 INFO L85 PathProgramCache]: Analyzing trace with hash 57263801, now seen corresponding path program 1 times [2023-11-23 07:37:36,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:37:36,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482150899] [2023-11-23 07:37:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:37:36,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:37:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:36,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:37:36,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:37:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:37:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:37:36,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:37:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:37:36,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:37:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 07:37:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 07:37:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 07:37:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:36,639 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-11-23 07:37:36,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:37:36,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482150899] [2023-11-23 07:37:36,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482150899] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:37:36,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678630256] [2023-11-23 07:37:36,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:37:36,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:37:36,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:37:36,640 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 07:37:36,681 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 07:37:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:37,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-23 07:37:37,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:37:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-23 07:37:37,193 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 07:37:37,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678630256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 07:37:37,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 07:37:37,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2023-11-23 07:37:37,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879911673] [2023-11-23 07:37:37,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 07:37:37,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 07:37:37,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 07:37:37,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 07:37:37,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-11-23 07:37:37,194 INFO L87 Difference]: Start difference. First operand 236 states and 340 transitions. Second operand has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-23 07:37:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 07:37:37,628 INFO L93 Difference]: Finished difference Result 477 states and 705 transitions. [2023-11-23 07:37:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 07:37:37,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 108 [2023-11-23 07:37:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 07:37:37,630 INFO L225 Difference]: With dead ends: 477 [2023-11-23 07:37:37,630 INFO L226 Difference]: Without dead ends: 270 [2023-11-23 07:37:37,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2023-11-23 07:37:37,631 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 94 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 07:37:37,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 858 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 07:37:37,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2023-11-23 07:37:37,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 250. [2023-11-23 07:37:37,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 154 states have (on average 1.2727272727272727) internal successors, (196), 168 states have internal predecessors, (196), 73 states have call successors, (73), 16 states have call predecessors, (73), 22 states have return successors, (99), 65 states have call predecessors, (99), 69 states have call successors, (99) [2023-11-23 07:37:37,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 368 transitions. [2023-11-23 07:37:37,671 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 368 transitions. Word has length 108 [2023-11-23 07:37:37,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 07:37:37,672 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 368 transitions. [2023-11-23 07:37:37,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.0) internal successors, (54), 10 states have internal predecessors, (54), 5 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-23 07:37:37,672 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 368 transitions. [2023-11-23 07:37:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-23 07:37:37,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 07:37:37,673 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-23 07:37:37,689 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 07:37:37,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-23 07:37:37,889 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 07:37:37,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 07:37:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash -578289219, now seen corresponding path program 1 times [2023-11-23 07:37:37,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 07:37:37,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498015472] [2023-11-23 07:37:37,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:37:37,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 07:37:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:37:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 07:37:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 07:37:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 07:37:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-23 07:37:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 07:37:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-23 07:37:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-23 07:37:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 07:37:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 07:37:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-23 07:37:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,311 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-23 07:37:38,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 07:37:38,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498015472] [2023-11-23 07:37:38,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498015472] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 07:37:38,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672640357] [2023-11-23 07:37:38,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 07:37:38,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 07:37:38,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 07:37:38,337 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 07:37:38,365 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 07:37:38,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 07:37:38,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-23 07:37:38,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 07:37:38,872 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 22 treesize of output 7 [2023-11-23 07:37:38,877 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 24 treesize of output 9 Killed by 15