./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_from_array_harness.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_from_array_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:52:19,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:52:19,706 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:52:19,714 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:52:19,714 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:52:19,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:52:19,747 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:52:19,747 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:52:19,748 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:52:19,750 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:52:19,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:52:19,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:52:19,751 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:52:19,756 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:52:19,757 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:52:19,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:52:19,757 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:52:19,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:52:19,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:52:19,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:52:19,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:52:19,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:52:19,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:52:19,760 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:52:19,760 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:52:19,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:52:19,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:52:19,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:52:19,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:52:19,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:52:19,763 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:52:19,763 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:52:19,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:52:19,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:52:19,764 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:52:19,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:52:19,764 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:52:19,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:52:19,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:52:19,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd5e922bebe187c1230ec455171e0dbeb52eef7c95cec8ebc1ad02d91040db3c Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:52:20,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:52:20,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:52:20,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:52:20,050 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:52:20,050 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:52:20,051 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_byte_buf_from_array_harness.i [2023-11-23 06:52:21,214 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:52:21,733 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:52:21,734 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_byte_buf_from_array_harness.i [2023-11-23 06:52:21,782 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/394a446e2/4423d28ca8e3407db62d9410a6460ae0/FLAG539f9ec9a [2023-11-23 06:52:21,798 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/394a446e2/4423d28ca8e3407db62d9410a6460ae0 [2023-11-23 06:52:21,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:52:21,803 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:52:21,805 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:52:21,805 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:52:21,810 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:52:21,812 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:52:21" (1/1) ... [2023-11-23 06:52:21,813 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a59167a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:21, skipping insertion in model container [2023-11-23 06:52:21,813 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:52:21" (1/1) ... [2023-11-23 06:52:21,925 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:52:22,232 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_byte_buf_from_array_harness.i[4497,4510] [2023-11-23 06:52:22,241 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_byte_buf_from_array_harness.i[4557,4570] [2023-11-23 06:52:23,346 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:23,347 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:23,348 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:23,348 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:23,350 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:23,370 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:23,370 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:23,372 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:23,373 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:23,930 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:52:23,931 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:52:23,932 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:52:23,933 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:52:23,934 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:52:23,935 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:52:23,938 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:52:23,939 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:52:23,941 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:52:23,941 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:52:24,192 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,193 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:52:24,345 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:52:24,373 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_byte_buf_from_array_harness.i[4497,4510] [2023-11-23 06:52:24,375 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_byte_buf_from_array_harness.i[4557,4570] [2023-11-23 06:52:24,408 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,409 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,410 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,411 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,420 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,421 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,422 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,423 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,557 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:52:24,558 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:52:24,558 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:52:24,559 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:52:24,560 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:52:24,561 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:52:24,561 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:52:24,561 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:52:24,562 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:52:24,562 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:52:24,713 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8269] [2023-11-23 06:52:24,715 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,715 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:52:24,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8755-8766] [2023-11-23 06:52:24,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:52:24,858 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,858 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,858 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,858 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,858 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,859 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,859 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,859 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,859 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,859 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,859 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,859 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,860 WARN L675 CHandler]: The function predicate is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,860 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,860 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,860 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,860 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,860 WARN L675 CHandler]: The function memchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:52:24,868 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:52:24,869 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24 WrapperNode [2023-11-23 06:52:24,869 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:52:24,871 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:52:24,871 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:52:24,872 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:52:24,880 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (1/1) ... [2023-11-23 06:52:24,999 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (1/1) ... [2023-11-23 06:52:25,056 INFO L138 Inliner]: procedures = 689, calls = 2618, calls flagged for inlining = 57, calls inlined = 4, statements flattened = 765 [2023-11-23 06:52:25,062 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:52:25,063 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:52:25,063 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:52:25,063 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:52:25,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (1/1) ... [2023-11-23 06:52:25,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (1/1) ... [2023-11-23 06:52:25,090 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (1/1) ... [2023-11-23 06:52:25,183 INFO L188 MemorySlicer]: Split 530 memory accesses to 6 slices as follows [2, 5, 256, 238, 26, 3]. 48 percent of accesses are in the largest equivalence class. The 506 initializations are split as follows [2, 5, 256, 236, 4, 3]. The 4 writes are split as follows [0, 0, 0, 0, 4, 0]. [2023-11-23 06:52:25,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (1/1) ... [2023-11-23 06:52:25,184 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (1/1) ... [2023-11-23 06:52:25,217 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (1/1) ... [2023-11-23 06:52:25,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (1/1) ... [2023-11-23 06:52:25,226 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (1/1) ... [2023-11-23 06:52:25,243 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (1/1) ... [2023-11-23 06:52:25,253 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:52:25,254 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:52:25,254 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:52:25,254 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:52:25,255 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (1/1) ... [2023-11-23 06:52:25,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:52:25,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:52:25,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 06:52:25,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 06:52:25,351 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2023-11-23 06:52:25,352 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2023-11-23 06:52:25,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:52:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:52:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:52:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:52:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:52:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:52:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:52:25,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:52:25,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:52:25,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:52:25,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:52:25,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:52:25,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:52:25,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:52:25,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:52:25,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:52:25,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:52:25,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:52:25,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:52:25,356 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:52:25,356 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:52:25,356 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:52:25,356 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:52:25,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:52:25,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:52:25,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:52:25,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:52:25,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:52:25,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:52:25,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:52:25,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:52:25,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:52:25,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:52:25,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:52:25,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:52:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:52:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2023-11-23 06:52:25,360 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2023-11-23 06:52:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:52:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:52:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:52:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:52:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:52:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:52:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:52:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:52:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:52:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:52:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:52:25,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:52:25,362 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_from_array [2023-11-23 06:52:25,362 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_from_array [2023-11-23 06:52:25,604 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:52:25,605 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:52:26,417 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:52:26,528 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:52:26,528 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 06:52:26,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:52:26 BoogieIcfgContainer [2023-11-23 06:52:26,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:52:26,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:52:26,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:52:26,534 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:52:26,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:52:21" (1/3) ... [2023-11-23 06:52:26,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ea27e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:52:26, skipping insertion in model container [2023-11-23 06:52:26,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:52:24" (2/3) ... [2023-11-23 06:52:26,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35ea27e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:52:26, skipping insertion in model container [2023-11-23 06:52:26,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:52:26" (3/3) ... [2023-11-23 06:52:26,537 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_from_array_harness.i [2023-11-23 06:52:26,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:52:26,555 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:52:26,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:52:26,605 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;@72474744, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:52:26,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:52:26,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 43 states have internal predecessors, (54), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 06:52:26,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 06:52:26,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:26,622 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:52:26,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:26,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:26,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1584327176, now seen corresponding path program 1 times [2023-11-23 06:52:26,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:26,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689223489] [2023-11-23 06:52:26,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:26,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:27,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 06:52:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:52:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:52:27,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:27,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689223489] [2023-11-23 06:52:27,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689223489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:27,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:27,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 06:52:27,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507434627] [2023-11-23 06:52:27,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:27,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 06:52:27,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:27,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 06:52:27,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 06:52:27,363 INFO L87 Difference]: Start difference. First operand has 65 states, 42 states have (on average 1.2857142857142858) internal successors, (54), 43 states have internal predecessors, (54), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 06:52:27,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:27,580 INFO L93 Difference]: Finished difference Result 126 states and 174 transitions. [2023-11-23 06:52:27,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 06:52:27,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-11-23 06:52:27,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:27,593 INFO L225 Difference]: With dead ends: 126 [2023-11-23 06:52:27,593 INFO L226 Difference]: Without dead ends: 61 [2023-11-23 06:52:27,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 06:52:27,599 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 33 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:27,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 59 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:52:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-23 06:52:27,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-11-23 06:52:27,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 06:52:27,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 76 transitions. [2023-11-23 06:52:27,638 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 76 transitions. Word has length 28 [2023-11-23 06:52:27,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:27,638 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 76 transitions. [2023-11-23 06:52:27,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 06:52:27,639 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 76 transitions. [2023-11-23 06:52:27,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 06:52:27,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:27,640 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:52:27,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:52:27,641 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:27,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:27,641 INFO L85 PathProgramCache]: Analyzing trace with hash -807917172, now seen corresponding path program 1 times [2023-11-23 06:52:27,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:27,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929680380] [2023-11-23 06:52:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:27,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 06:52:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:52:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:28,202 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:52:28,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:28,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929680380] [2023-11-23 06:52:28,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929680380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:28,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:28,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 06:52:28,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405152075] [2023-11-23 06:52:28,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:28,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:52:28,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:28,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:52:28,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:52:28,206 INFO L87 Difference]: Start difference. First operand 61 states and 76 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 06:52:28,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:28,478 INFO L93 Difference]: Finished difference Result 112 states and 140 transitions. [2023-11-23 06:52:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:52:28,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-11-23 06:52:28,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:28,481 INFO L225 Difference]: With dead ends: 112 [2023-11-23 06:52:28,482 INFO L226 Difference]: Without dead ends: 63 [2023-11-23 06:52:28,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:52:28,483 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 52 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:28,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 105 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:52:28,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-23 06:52:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-11-23 06:52:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 40 states have (on average 1.2) internal successors, (48), 42 states have internal predecessors, (48), 15 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (15), 14 states have call predecessors, (15), 14 states have call successors, (15) [2023-11-23 06:52:28,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2023-11-23 06:52:28,504 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 28 [2023-11-23 06:52:28,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:28,505 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2023-11-23 06:52:28,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 06:52:28,506 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2023-11-23 06:52:28,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 06:52:28,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:28,507 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:52:28,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 06:52:28,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:28,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:28,509 INFO L85 PathProgramCache]: Analyzing trace with hash -68453791, now seen corresponding path program 1 times [2023-11-23 06:52:28,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:28,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811369640] [2023-11-23 06:52:28,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:28,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:28,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:29,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:29,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:29,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 06:52:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:29,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:52:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:29,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:52:29,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:29,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811369640] [2023-11-23 06:52:29,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811369640] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:29,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:29,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 06:52:29,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484618696] [2023-11-23 06:52:29,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:29,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 06:52:29,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:29,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 06:52:29,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:52:29,496 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 9 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 06:52:29,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:29,876 INFO L93 Difference]: Finished difference Result 74 states and 90 transitions. [2023-11-23 06:52:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:52:29,877 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2023-11-23 06:52:29,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:29,878 INFO L225 Difference]: With dead ends: 74 [2023-11-23 06:52:29,878 INFO L226 Difference]: Without dead ends: 72 [2023-11-23 06:52:29,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-11-23 06:52:29,880 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 60 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:29,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 217 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:52:29,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-23 06:52:29,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2023-11-23 06:52:29,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 48 states have internal predecessors, (53), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-23 06:52:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 87 transitions. [2023-11-23 06:52:29,899 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 87 transitions. Word has length 34 [2023-11-23 06:52:29,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:29,900 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 87 transitions. [2023-11-23 06:52:29,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 06:52:29,900 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 87 transitions. [2023-11-23 06:52:29,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 06:52:29,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:29,903 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:52:29,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 06:52:29,904 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:29,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash -836820197, now seen corresponding path program 1 times [2023-11-23 06:52:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:29,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893952258] [2023-11-23 06:52:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:29,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:32,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:32,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:32,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 06:52:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:32,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:52:32,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:52:32,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:32,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893952258] [2023-11-23 06:52:32,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893952258] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:32,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:32,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 06:52:32,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778796112] [2023-11-23 06:52:32,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:32,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:52:32,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:32,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:52:32,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:52:32,972 INFO L87 Difference]: Start difference. First operand 71 states and 87 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 06:52:33,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:33,507 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2023-11-23 06:52:33,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:52:33,507 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-11-23 06:52:33,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:33,509 INFO L225 Difference]: With dead ends: 139 [2023-11-23 06:52:33,509 INFO L226 Difference]: Without dead ends: 85 [2023-11-23 06:52:33,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:52:33,511 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 122 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:33,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 138 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:52:33,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-23 06:52:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 80. [2023-11-23 06:52:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 57 states have internal predecessors, (66), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-23 06:52:33,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2023-11-23 06:52:33,521 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 38 [2023-11-23 06:52:33,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:33,521 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2023-11-23 06:52:33,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 06:52:33,522 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2023-11-23 06:52:33,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 06:52:33,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:33,523 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:52:33,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 06:52:33,523 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:33,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:33,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1847937447, now seen corresponding path program 1 times [2023-11-23 06:52:33,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:33,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230779488] [2023-11-23 06:52:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:33,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:35,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:35,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 06:52:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:52:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:35,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:52:35,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:35,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230779488] [2023-11-23 06:52:35,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230779488] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:35,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:35,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 06:52:35,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810713364] [2023-11-23 06:52:35,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:35,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:52:35,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:35,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:52:35,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:52:35,640 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 06:52:36,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:36,257 INFO L93 Difference]: Finished difference Result 177 states and 224 transitions. [2023-11-23 06:52:36,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 06:52:36,257 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-11-23 06:52:36,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:36,259 INFO L225 Difference]: With dead ends: 177 [2023-11-23 06:52:36,259 INFO L226 Difference]: Without dead ends: 109 [2023-11-23 06:52:36,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2023-11-23 06:52:36,260 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 143 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:36,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 142 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:52:36,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-23 06:52:36,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 84. [2023-11-23 06:52:36,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 61 states have internal predecessors, (72), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-23 06:52:36,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2023-11-23 06:52:36,269 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 38 [2023-11-23 06:52:36,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:36,270 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2023-11-23 06:52:36,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 06:52:36,270 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2023-11-23 06:52:36,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 06:52:36,271 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:36,271 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:52:36,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 06:52:36,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:36,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:36,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1425961495, now seen corresponding path program 1 times [2023-11-23 06:52:36,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:36,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181205980] [2023-11-23 06:52:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:36,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:36,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:36,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 06:52:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:52:36,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:52:36,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:36,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181205980] [2023-11-23 06:52:36,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181205980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:36,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:36,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 06:52:36,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613661704] [2023-11-23 06:52:36,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:36,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:52:36,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:36,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:52:36,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:52:36,886 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 06:52:37,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:37,146 INFO L93 Difference]: Finished difference Result 165 states and 213 transitions. [2023-11-23 06:52:37,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:52:37,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2023-11-23 06:52:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:37,148 INFO L225 Difference]: With dead ends: 165 [2023-11-23 06:52:37,148 INFO L226 Difference]: Without dead ends: 98 [2023-11-23 06:52:37,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:52:37,149 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 59 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:37,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 106 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:52:37,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-11-23 06:52:37,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 87. [2023-11-23 06:52:37,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 64 states have internal predecessors, (75), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (18), 15 states have call predecessors, (18), 15 states have call successors, (18) [2023-11-23 06:52:37,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2023-11-23 06:52:37,177 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 38 [2023-11-23 06:52:37,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:37,178 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2023-11-23 06:52:37,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 06:52:37,178 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2023-11-23 06:52:37,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 06:52:37,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:37,180 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:52:37,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 06:52:37,180 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:37,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:37,181 INFO L85 PathProgramCache]: Analyzing trace with hash 724896917, now seen corresponding path program 1 times [2023-11-23 06:52:37,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:37,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801609232] [2023-11-23 06:52:37,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:37,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:39,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:39,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:39,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 06:52:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:39,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:52:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:39,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 06:52:39,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:39,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801609232] [2023-11-23 06:52:39,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801609232] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:52:39,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123626901] [2023-11-23 06:52:39,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:39,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:52:39,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:52:39,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:52:39,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 06:52:40,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:40,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-23 06:52:40,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:52:40,527 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 39 treesize of output 13 [2023-11-23 06:52:42,572 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_BEFORE_CALL_1| Int) (|v_aws_byte_buf_from_array_~#buf~1.offset_BEFORE_CALL_1| Int)) (let ((.cse0 (select |c_#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_BEFORE_CALL_1|))) (= (select .cse0 |v_aws_byte_buf_from_array_~#buf~1.offset_BEFORE_CALL_1|) (select .cse0 (+ 16 |v_aws_byte_buf_from_array_~#buf~1.offset_BEFORE_CALL_1|))))) is different from true [2023-11-23 06:52:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:52:43,337 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:52:43,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123626901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:43,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:52:43,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 22 [2023-11-23 06:52:43,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730227401] [2023-11-23 06:52:43,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:43,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:52:43,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:43,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:52:43,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=372, Unknown=1, NotChecked=38, Total=462 [2023-11-23 06:52:43,339 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 06:52:46,165 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 06:52:46,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:46,282 INFO L93 Difference]: Finished difference Result 209 states and 260 transitions. [2023-11-23 06:52:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:52:46,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2023-11-23 06:52:46,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:46,284 INFO L225 Difference]: With dead ends: 209 [2023-11-23 06:52:46,284 INFO L226 Difference]: Without dead ends: 112 [2023-11-23 06:52:46,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=87, Invalid=516, Unknown=1, NotChecked=46, Total=650 [2023-11-23 06:52:46,285 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 31 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 113 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:46,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 335 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 1 Unknown, 113 Unchecked, 2.8s Time] [2023-11-23 06:52:46,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-23 06:52:46,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2023-11-23 06:52:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 68 states have (on average 1.2058823529411764) internal successors, (82), 70 states have internal predecessors, (82), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-23 06:52:46,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2023-11-23 06:52:46,294 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 38 [2023-11-23 06:52:46,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:46,294 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2023-11-23 06:52:46,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 06:52:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2023-11-23 06:52:46,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-23 06:52:46,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:46,296 INFO L195 NwaCegarLoop]: trace histogram [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 06:52:46,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 06:52:46,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:52:46,517 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:46,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:46,517 INFO L85 PathProgramCache]: Analyzing trace with hash 2116503984, now seen corresponding path program 1 times [2023-11-23 06:52:46,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:46,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983299285] [2023-11-23 06:52:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:46,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:47,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:47,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:47,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 06:52:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:47,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:52:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:47,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:52:47,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:47,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983299285] [2023-11-23 06:52:47,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983299285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:47,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:47,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 06:52:47,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034652872] [2023-11-23 06:52:47,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:47,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 06:52:47,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:47,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 06:52:47,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:52:47,339 INFO L87 Difference]: Start difference. First operand 94 states and 114 transitions. Second operand has 11 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 06:52:47,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:47,751 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2023-11-23 06:52:47,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 06:52:47,752 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2023-11-23 06:52:47,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:47,753 INFO L225 Difference]: With dead ends: 114 [2023-11-23 06:52:47,753 INFO L226 Difference]: Without dead ends: 112 [2023-11-23 06:52:47,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2023-11-23 06:52:47,753 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 72 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:47,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 275 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:52:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-23 06:52:47,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 96. [2023-11-23 06:52:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 70 states have (on average 1.2) internal successors, (84), 72 states have internal predecessors, (84), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-23 06:52:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2023-11-23 06:52:47,765 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 40 [2023-11-23 06:52:47,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:47,765 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2023-11-23 06:52:47,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-23 06:52:47,765 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2023-11-23 06:52:47,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-23 06:52:47,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:47,767 INFO L195 NwaCegarLoop]: trace histogram [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 06:52:47,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 06:52:47,767 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:47,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:47,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1723476974, now seen corresponding path program 1 times [2023-11-23 06:52:47,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:47,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395217169] [2023-11-23 06:52:47,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:47,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:48,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:50,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:50,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:50,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-23 06:52:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:50,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 06:52:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:52:50,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:50,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395217169] [2023-11-23 06:52:50,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395217169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:50,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:50,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-11-23 06:52:50,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42941129] [2023-11-23 06:52:50,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:50,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 06:52:50,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:50,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 06:52:50,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2023-11-23 06:52:50,581 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand has 20 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-23 06:52:52,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:52,110 INFO L93 Difference]: Finished difference Result 129 states and 150 transitions. [2023-11-23 06:52:52,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 06:52:52,111 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 40 [2023-11-23 06:52:52,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:52,112 INFO L225 Difference]: With dead ends: 129 [2023-11-23 06:52:52,112 INFO L226 Difference]: Without dead ends: 127 [2023-11-23 06:52:52,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=184, Invalid=1148, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 06:52:52,113 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 111 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 1133 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:52,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 379 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1133 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:52:52,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-23 06:52:52,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 90. [2023-11-23 06:52:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 66 states have (on average 1.2121212121212122) internal successors, (80), 67 states have internal predecessors, (80), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 06:52:52,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2023-11-23 06:52:52,121 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 40 [2023-11-23 06:52:52,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:52,122 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2023-11-23 06:52:52,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.8) internal successors, (27), 15 states have internal predecessors, (27), 5 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-23 06:52:52,122 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2023-11-23 06:52:52,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-23 06:52:52,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:52,123 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:52:52,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 06:52:52,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:52,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:52,124 INFO L85 PathProgramCache]: Analyzing trace with hash 52138954, now seen corresponding path program 1 times [2023-11-23 06:52:52,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:52,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106510618] [2023-11-23 06:52:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:52,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:52,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:52,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:52:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:52,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:52:52,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:52,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 06:52:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 06:52:52,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:52,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106510618] [2023-11-23 06:52:52,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106510618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:52,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:52,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:52:52,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335149910] [2023-11-23 06:52:52,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:52,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:52:52,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:52,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:52:52,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:52:52,569 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 06:52:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:53,062 INFO L93 Difference]: Finished difference Result 120 states and 143 transitions. [2023-11-23 06:52:53,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:52:53,063 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-11-23 06:52:53,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:53,064 INFO L225 Difference]: With dead ends: 120 [2023-11-23 06:52:53,064 INFO L226 Difference]: Without dead ends: 90 [2023-11-23 06:52:53,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:52:53,065 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 59 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:53,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 75 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:52:53,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-11-23 06:52:53,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2023-11-23 06:52:53,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 66 states have (on average 1.196969696969697) internal successors, (79), 67 states have internal predecessors, (79), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-23 06:52:53,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2023-11-23 06:52:53,076 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 47 [2023-11-23 06:52:53,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:53,076 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2023-11-23 06:52:53,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 06:52:53,077 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2023-11-23 06:52:53,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-23 06:52:53,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:53,080 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:52:53,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 06:52:53,080 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:53,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1279065631, now seen corresponding path program 1 times [2023-11-23 06:52:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:53,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718874829] [2023-11-23 06:52:53,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:53,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:53,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:52:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:53,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:52:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 06:52:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 06:52:53,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:53,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718874829] [2023-11-23 06:52:53,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718874829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:52:53,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:52:53,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 06:52:53,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532907861] [2023-11-23 06:52:53,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:52:53,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 06:52:53,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:52:53,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 06:52:53,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:52:53,863 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 10 states, 8 states have (on average 3.625) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 06:52:54,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:52:54,642 INFO L93 Difference]: Finished difference Result 104 states and 122 transitions. [2023-11-23 06:52:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 06:52:54,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 53 [2023-11-23 06:52:54,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:52:54,644 INFO L225 Difference]: With dead ends: 104 [2023-11-23 06:52:54,644 INFO L226 Difference]: Without dead ends: 102 [2023-11-23 06:52:54,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-23 06:52:54,645 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 91 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:52:54,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 201 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:52:54,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-11-23 06:52:54,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 98. [2023-11-23 06:52:54,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 73 states have internal predecessors, (84), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-23 06:52:54,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 116 transitions. [2023-11-23 06:52:54,652 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 116 transitions. Word has length 53 [2023-11-23 06:52:54,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:52:54,652 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 116 transitions. [2023-11-23 06:52:54,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-23 06:52:54,652 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 116 transitions. [2023-11-23 06:52:54,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 06:52:54,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:52:54,653 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:52:54,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 06:52:54,653 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:52:54,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:52:54,653 INFO L85 PathProgramCache]: Analyzing trace with hash -306964519, now seen corresponding path program 1 times [2023-11-23 06:52:54,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:52:54,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210011525] [2023-11-23 06:52:54,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:54,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:52:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:56,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:56,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:52:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:52:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:52:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:52:57,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 06:52:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:57,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 06:52:57,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:52:57,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210011525] [2023-11-23 06:52:57,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210011525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:52:57,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507564678] [2023-11-23 06:52:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:52:57,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:52:57,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:52:57,912 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:52:57,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 06:52:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:52:58,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 2535 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-23 06:52:58,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:52:58,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 1 [2023-11-23 06:52:58,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2023-11-23 06:52:58,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 65 [2023-11-23 06:52:58,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 118 [2023-11-23 06:52:58,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 36 [2023-11-23 06:52:58,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2023-11-23 06:52:59,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:52:59,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 27 case distinctions, treesize of input 97 treesize of output 149 [2023-11-23 06:53:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:53:01,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:53:01,992 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 06:53:01,994 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-23 06:53:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 06:53:02,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507564678] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:53:02,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:53:02,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20, 14] total 46 [2023-11-23 06:53:02,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079825830] [2023-11-23 06:53:02,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:53:02,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-23 06:53:02,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:53:02,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-23 06:53:02,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1914, Unknown=0, NotChecked=0, Total=2070 [2023-11-23 06:53:02,482 INFO L87 Difference]: Start difference. First operand 98 states and 116 transitions. Second operand has 46 states, 35 states have (on average 2.8) internal successors, (98), 37 states have internal predecessors, (98), 12 states have call successors, (17), 6 states have call predecessors, (17), 12 states have return successors, (16), 9 states have call predecessors, (16), 11 states have call successors, (16) [2023-11-23 06:53:04,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:53:06,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:53:19,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:53:19,412 INFO L93 Difference]: Finished difference Result 283 states and 334 transitions. [2023-11-23 06:53:19,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-11-23 06:53:19,413 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 35 states have (on average 2.8) internal successors, (98), 37 states have internal predecessors, (98), 12 states have call successors, (17), 6 states have call predecessors, (17), 12 states have return successors, (16), 9 states have call predecessors, (16), 11 states have call successors, (16) Word has length 57 [2023-11-23 06:53:19,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:53:19,415 INFO L225 Difference]: With dead ends: 283 [2023-11-23 06:53:19,415 INFO L226 Difference]: Without dead ends: 238 [2023-11-23 06:53:19,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2102 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1336, Invalid=7594, Unknown=0, NotChecked=0, Total=8930 [2023-11-23 06:53:19,418 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 901 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 2939 mSolverCounterSat, 165 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 2939 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:53:19,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [904 Valid, 289 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 2939 Invalid, 19 Unknown, 0 Unchecked, 7.1s Time] [2023-11-23 06:53:19,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-23 06:53:19,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 140. [2023-11-23 06:53:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 105 states have (on average 1.2) internal successors, (126), 109 states have internal predecessors, (126), 18 states have call successors, (18), 12 states have call predecessors, (18), 16 states have return successors, (21), 18 states have call predecessors, (21), 17 states have call successors, (21) [2023-11-23 06:53:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2023-11-23 06:53:19,436 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 57 [2023-11-23 06:53:19,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:53:19,436 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2023-11-23 06:53:19,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 35 states have (on average 2.8) internal successors, (98), 37 states have internal predecessors, (98), 12 states have call successors, (17), 6 states have call predecessors, (17), 12 states have return successors, (16), 9 states have call predecessors, (16), 11 states have call successors, (16) [2023-11-23 06:53:19,437 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2023-11-23 06:53:19,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 06:53:19,437 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:53:19,438 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-23 06:53:19,459 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 06:53:19,659 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,SelfDestructingSolverStorable11 [2023-11-23 06:53:19,660 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:53:19,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:53:19,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1318081769, now seen corresponding path program 1 times [2023-11-23 06:53:19,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:53:19,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997776602] [2023-11-23 06:53:19,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:53:19,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:53:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:20,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:20,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:53:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:20,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:20,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:53:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:20,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:53:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:20,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 06:53:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 06:53:21,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:53:21,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997776602] [2023-11-23 06:53:21,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997776602] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:53:21,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859677039] [2023-11-23 06:53:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:53:21,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:53:21,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:53:21,173 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:53:21,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 06:53:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:21,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-23 06:53:21,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:53:21,806 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 42 treesize of output 9 [2023-11-23 06:53:21,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 13 [2023-11-23 06:53:22,535 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:53:22,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 86 treesize of output 160 [2023-11-23 06:53:24,920 WARN L876 $PredicateComparison]: unable to prove that (and (exists ((|v_aws_byte_buf_from_array_~#buf~1.offset_BEFORE_CALL_7| Int) (|v_aws_byte_buf_from_array_~#buf~1.base_BEFORE_CALL_7| Int)) (let ((.cse0 (select |c_#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_BEFORE_CALL_7|))) (= (select .cse0 |v_aws_byte_buf_from_array_~#buf~1.offset_BEFORE_CALL_7|) (select .cse0 (+ 16 |v_aws_byte_buf_from_array_~#buf~1.offset_BEFORE_CALL_7|))))) (or (exists ((|v_aws_byte_buf_from_array_~#buf~1.base_BEFORE_CALL_6| Int) (|v_aws_byte_buf_from_array_~#buf~1.offset_BEFORE_CALL_6| Int)) (let ((.cse1 (select |c_#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_BEFORE_CALL_6|))) (= (select .cse1 |v_aws_byte_buf_from_array_~#buf~1.offset_BEFORE_CALL_6|) (select .cse1 (+ 16 |v_aws_byte_buf_from_array_~#buf~1.offset_BEFORE_CALL_6|))))) (exists ((v_prenex_4 Int) (v_prenex_3 Int)) (let ((.cse2 (select |c_#memory_int#4| v_prenex_3))) (let ((.cse3 (select .cse2 (+ 16 v_prenex_4)))) (and (= (select .cse2 v_prenex_4) .cse3) (<= 1 (mod .cse3 18446744073709551616)))))))) is different from true [2023-11-23 06:53:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 06:53:30,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:53:31,014 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 06:53:31,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 67 treesize of output 107 [2023-11-23 06:53:31,027 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 1696 treesize of output 1648 [2023-11-23 06:53:31,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859677039] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:53:31,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:53:31,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22] total 36 [2023-11-23 06:53:31,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718976021] [2023-11-23 06:53:31,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:53:31,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-23 06:53:31,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:53:31,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-23 06:53:31,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1588, Unknown=2, NotChecked=80, Total=1806 [2023-11-23 06:53:31,627 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand has 36 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 27 states have internal predecessors, (69), 9 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-23 06:53:34,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:53:36,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:53:49,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:53:49,749 INFO L93 Difference]: Finished difference Result 334 states and 401 transitions. [2023-11-23 06:53:49,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-11-23 06:53:49,754 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 27 states have internal predecessors, (69), 9 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 57 [2023-11-23 06:53:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:53:49,756 INFO L225 Difference]: With dead ends: 334 [2023-11-23 06:53:49,756 INFO L226 Difference]: Without dead ends: 273 [2023-11-23 06:53:49,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 66 SyntacticMatches, 5 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1675 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=923, Invalid=6389, Unknown=2, NotChecked=168, Total=7482 [2023-11-23 06:53:49,758 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 503 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 2404 mSolverCounterSat, 218 mSolverCounterUnsat, 82 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 2942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2404 IncrementalHoareTripleChecker+Invalid, 82 IncrementalHoareTripleChecker+Unknown, 238 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2023-11-23 06:53:49,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 243 Invalid, 2942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2404 Invalid, 82 Unknown, 238 Unchecked, 10.0s Time] [2023-11-23 06:53:49,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-23 06:53:49,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 169. [2023-11-23 06:53:49,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 128 states have (on average 1.1953125) internal successors, (153), 134 states have internal predecessors, (153), 20 states have call successors, (20), 13 states have call predecessors, (20), 20 states have return successors, (26), 21 states have call predecessors, (26), 19 states have call successors, (26) [2023-11-23 06:53:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 199 transitions. [2023-11-23 06:53:49,808 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 199 transitions. Word has length 57 [2023-11-23 06:53:49,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:53:49,808 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 199 transitions. [2023-11-23 06:53:49,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 27 states have internal predecessors, (69), 9 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-23 06:53:49,809 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 199 transitions. [2023-11-23 06:53:49,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 06:53:49,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:53:49,810 INFO L195 NwaCegarLoop]: trace histogram [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 06:53:49,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 06:53:50,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:53:50,032 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:53:50,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:53:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1254752595, now seen corresponding path program 1 times [2023-11-23 06:53:50,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:53:50,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860608676] [2023-11-23 06:53:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:53:50,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:53:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:50,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:50,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:51,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 06:53:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:51,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:53:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:51,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 06:53:51,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:51,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 06:53:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:51,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-23 06:53:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:51,494 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 06:53:51,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:53:51,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860608676] [2023-11-23 06:53:51,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860608676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:53:51,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745991826] [2023-11-23 06:53:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:53:51,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:53:51,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:53:51,496 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:53:51,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 06:53:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:53:52,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 2532 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-23 06:53:52,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:53:52,182 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 39 treesize of output 13 [2023-11-23 06:53:54,204 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_from_array_~#buf~1.offset_BEFORE_CALL_8| Int) (|v_aws_byte_buf_from_array_~#buf~1.base_BEFORE_CALL_8| Int)) (let ((.cse0 (select |c_#memory_int#4| |v_aws_byte_buf_from_array_~#buf~1.base_BEFORE_CALL_8|))) (= (select .cse0 (+ 16 |v_aws_byte_buf_from_array_~#buf~1.offset_BEFORE_CALL_8|)) (select .cse0 |v_aws_byte_buf_from_array_~#buf~1.offset_BEFORE_CALL_8|)))) is different from true [2023-11-23 06:54:04,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 1 not checked. [2023-11-23 06:54:04,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:54:04,699 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 774 treesize of output 750 [2023-11-23 06:54:05,076 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 06:54:05,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745991826] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:54:05,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 06:54:05,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 14] total 38 [2023-11-23 06:54:05,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919540619] [2023-11-23 06:54:05,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 06:54:05,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-23 06:54:05,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:54:05,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-23 06:54:05,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1195, Unknown=5, NotChecked=70, Total=1406 [2023-11-23 06:54:05,080 INFO L87 Difference]: Start difference. First operand 169 states and 199 transitions. Second operand has 38 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 29 states have internal predecessors, (83), 8 states have call successors, (14), 7 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2023-11-23 06:54:12,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:54:20,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:54:23,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:54:25,058 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:54:35,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:54:37,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:54:49,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:54:51,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:07,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:09,987 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:11,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:14,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:16,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:18,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:20,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:22,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:24,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:26,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:28,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:30,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:32,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:34,359 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:36,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:38,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:56,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:55:58,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:15,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:17,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:19,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:21,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:23,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 06:56:25,142 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] Killed by 15