./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_swap_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_array_list_swap_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 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:44:18,291 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:44:18,345 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:44:18,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:44:18,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:44:18,362 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:44:18,363 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:44:18,363 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:44:18,363 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:44:18,364 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:44:18,364 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:44:18,364 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:44:18,365 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:44:18,365 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:44:18,365 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:44:18,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:44:18,366 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:44:18,366 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:44:18,366 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:44:18,367 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:44:18,367 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:44:18,369 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:44:18,369 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:44:18,369 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:44:18,369 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:44:18,370 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:44:18,370 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:44:18,370 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:44:18,370 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:44:18,371 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:44:18,371 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:44:18,371 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:44:18,372 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:44:18,372 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:44:18,372 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:44:18,372 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:44:18,372 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:44:18,373 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:44:18,373 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:44:18,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f838ff631dd7d907eee223e4bc065b6ce71a3dd1969d0a88cef9ccdcf3b54d1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:44:18,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:44:18,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:44:18,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:44:18,580 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:44:18,581 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:44:18,582 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_list_swap_harness.i [2023-11-23 06:44:19,665 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:44:20,034 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:44:20,034 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_swap_harness.i [2023-11-23 06:44:20,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04fe49b51/439abd0ce5a347b1931fc38402c14de7/FLAG309e7b4d1 [2023-11-23 06:44:20,075 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04fe49b51/439abd0ce5a347b1931fc38402c14de7 [2023-11-23 06:44:20,079 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:44:20,080 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:44:20,083 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:44:20,083 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:44:20,086 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:44:20,087 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:44:20" (1/1) ... [2023-11-23 06:44:20,088 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@212e7743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:20, skipping insertion in model container [2023-11-23 06:44:20,088 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:44:20" (1/1) ... [2023-11-23 06:44:20,153 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:44:20,367 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_swap_harness.i[4493,4506] [2023-11-23 06:44:20,374 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_swap_harness.i[4553,4566] [2023-11-23 06:44:20,974 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:20,975 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:20,976 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:20,977 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:20,978 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:20,991 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:20,992 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:20,993 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:20,994 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:20,995 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:20,996 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:20,997 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:20,998 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,199 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:44:21,201 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:44:21,204 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:44:21,206 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:44:21,207 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:44:21,207 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:44:21,207 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:44:21,208 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:44:21,208 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:44:21,208 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:44:21,289 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,289 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,293 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,296 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,343 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:44:21,372 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:44:21,389 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_swap_harness.i[4493,4506] [2023-11-23 06:44:21,390 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_swap_harness.i[4553,4566] [2023-11-23 06:44:21,443 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,443 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,444 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,444 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,444 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,449 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,450 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,451 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,452 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,452 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,453 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,453 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,453 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,477 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:44:21,478 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:44:21,479 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:44:21,480 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:44:21,481 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:44:21,483 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:44:21,483 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:44:21,483 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:44:21,483 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:44:21,484 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:44:21,512 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,514 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,516 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,518 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:44:21,523 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7775-7786] [2023-11-23 06:44:21,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:44:21,672 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,672 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,672 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,672 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,672 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,672 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,673 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,673 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,673 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,673 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,673 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,673 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,673 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,673 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,673 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:44:21,679 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:44:21,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21 WrapperNode [2023-11-23 06:44:21,680 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:44:21,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:44:21,681 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:44:21,681 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:44:21,686 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (1/1) ... [2023-11-23 06:44:21,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (1/1) ... [2023-11-23 06:44:21,825 INFO L138 Inliner]: procedures = 690, calls = 1683, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 655 [2023-11-23 06:44:21,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:44:21,826 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:44:21,826 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:44:21,826 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:44:21,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (1/1) ... [2023-11-23 06:44:21,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (1/1) ... [2023-11-23 06:44:21,857 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (1/1) ... [2023-11-23 06:44:21,921 INFO L188 MemorySlicer]: Split 303 memory accesses to 8 slices as follows [2, 5, 3, 236, 39, 6, 9, 3]. 78 percent of accesses are in the largest equivalence class. The 259 initializations are split as follows [2, 2, 1, 236, 5, 5, 5, 3]. The 6 writes are split as follows [0, 1, 1, 0, 3, 1, 0, 0]. [2023-11-23 06:44:21,922 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (1/1) ... [2023-11-23 06:44:21,922 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (1/1) ... [2023-11-23 06:44:21,989 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (1/1) ... [2023-11-23 06:44:21,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (1/1) ... [2023-11-23 06:44:22,002 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (1/1) ... [2023-11-23 06:44:22,011 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (1/1) ... [2023-11-23 06:44:22,028 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:44:22,028 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:44:22,029 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:44:22,029 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:44:22,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (1/1) ... [2023-11-23 06:44:22,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:44:22,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:44:22,076 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 06:44:22,114 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 06:44:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:44:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 06:44:22,138 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 06:44:22,138 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 06:44:22,139 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 06:44:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:44:22,139 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:44:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:44:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:44:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:44:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:44:22,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:44:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:44:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 06:44:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-23 06:44:22,140 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 06:44:22,140 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 06:44:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:44:22,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:44:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:44:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:44:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:44:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:44:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:44:22,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:44:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:44:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:44:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 06:44:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-23 06:44:22,142 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-23 06:44:22,143 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-23 06:44:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:44:22,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:44:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:44:22,143 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:44:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 06:44:22,143 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 06:44:22,143 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 06:44:22,143 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 06:44:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:44:22,144 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:44:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-23 06:44:22,144 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-23 06:44:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:44:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:44:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:44:22,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:44:22,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:44:22,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:44:22,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:44:22,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 06:44:22,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-23 06:44:22,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:44:22,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:44:22,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:44:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:44:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:44:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:44:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 06:44:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-23 06:44:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-23 06:44:22,147 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-23 06:44:22,147 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:44:22,147 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:44:22,148 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 06:44:22,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 06:44:22,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:44:22,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:44:22,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:44:22,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:44:22,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:44:22,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:44:22,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 06:44:22,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-23 06:44:22,149 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 06:44:22,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 06:44:22,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:44:22,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:44:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:44:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:44:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:44:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:44:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 06:44:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-23 06:44:22,438 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:44:22,439 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:44:22,949 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:44:23,087 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:44:23,091 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 06:44:23,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:44:23 BoogieIcfgContainer [2023-11-23 06:44:23,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:44:23,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:44:23,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:44:23,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:44:23,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:44:20" (1/3) ... [2023-11-23 06:44:23,096 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a558e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:44:23, skipping insertion in model container [2023-11-23 06:44:23,096 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:44:21" (2/3) ... [2023-11-23 06:44:23,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a558e56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:44:23, skipping insertion in model container [2023-11-23 06:44:23,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:44:23" (3/3) ... [2023-11-23 06:44:23,098 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_harness.i [2023-11-23 06:44:23,113 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:44:23,114 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:44:23,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:44:23,166 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;@6d8e7458, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:44:23,167 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:44:23,170 INFO L276 IsEmpty]: Start isEmpty. Operand has 162 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 85 states have internal predecessors, (101), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2023-11-23 06:44:23,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 06:44:23,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:44:23,179 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:44:23,180 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:44:23,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:44:23,186 INFO L85 PathProgramCache]: Analyzing trace with hash 763409143, now seen corresponding path program 1 times [2023-11-23 06:44:23,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:44:23,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977379072] [2023-11-23 06:44:23,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:23,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:44:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:44:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:44:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:23,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:44:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:23,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 06:44:23,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:23,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 06:44:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:23,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:44:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:23,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:44:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:23,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 06:44:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:24,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:44:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:24,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:44:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:24,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:44:24,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 06:44:24,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:44:24,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977379072] [2023-11-23 06:44:24,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977379072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:44:24,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:44:24,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 06:44:24,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813817724] [2023-11-23 06:44:24,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:44:24,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:44:24,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:44:24,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:44:24,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 06:44:24,063 INFO L87 Difference]: Start difference. First operand has 162 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 85 states have internal predecessors, (101), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 06:44:25,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:44:25,285 INFO L93 Difference]: Finished difference Result 343 states and 543 transitions. [2023-11-23 06:44:25,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 06:44:25,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2023-11-23 06:44:25,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:44:25,295 INFO L225 Difference]: With dead ends: 343 [2023-11-23 06:44:25,295 INFO L226 Difference]: Without dead ends: 184 [2023-11-23 06:44:25,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 06:44:25,301 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 41 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 06:44:25,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 243 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 06:44:25,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-23 06:44:25,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 160. [2023-11-23 06:44:25,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 84 states have internal predecessors, (97), 61 states have call successors, (61), 15 states have call predecessors, (61), 15 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2023-11-23 06:44:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 218 transitions. [2023-11-23 06:44:25,351 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 218 transitions. Word has length 66 [2023-11-23 06:44:25,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:44:25,351 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 218 transitions. [2023-11-23 06:44:25,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 06:44:25,352 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 218 transitions. [2023-11-23 06:44:25,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-23 06:44:25,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:44:25,354 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:44:25,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:44:25,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:44:25,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:44:25,355 INFO L85 PathProgramCache]: Analyzing trace with hash -309053259, now seen corresponding path program 1 times [2023-11-23 06:44:25,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:44:25,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652473146] [2023-11-23 06:44:25,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:25,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:44:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:25,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:44:25,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:25,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:44:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:25,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:44:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:25,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 06:44:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:25,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 06:44:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:25,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:44:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:44:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:25,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-23 06:44:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:44:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:25,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-23 06:44:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-23 06:44:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:25,899 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-23 06:44:25,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:44:25,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652473146] [2023-11-23 06:44:25,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652473146] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:44:25,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134984695] [2023-11-23 06:44:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:25,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:25,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:44:25,902 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 06:44:25,928 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 06:44:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:26,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 2269 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 06:44:26,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:44:26,412 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-23 06:44:26,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:44:26,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134984695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:44:26,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:44:26,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 06:44:26,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909088309] [2023-11-23 06:44:26,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:44:26,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:44:26,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:44:26,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:44:26,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:44:26,414 INFO L87 Difference]: Start difference. First operand 160 states and 218 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 06:44:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:44:26,621 INFO L93 Difference]: Finished difference Result 290 states and 407 transitions. [2023-11-23 06:44:26,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:44:26,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 66 [2023-11-23 06:44:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:44:26,623 INFO L225 Difference]: With dead ends: 290 [2023-11-23 06:44:26,623 INFO L226 Difference]: Without dead ends: 162 [2023-11-23 06:44:26,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:44:26,625 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 41 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:44:26,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 650 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:44:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-23 06:44:26,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-23 06:44:26,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 84 states have (on average 1.1666666666666667) internal successors, (98), 86 states have internal predecessors, (98), 61 states have call successors, (61), 15 states have call predecessors, (61), 16 states have return successors, (68), 60 states have call predecessors, (68), 60 states have call successors, (68) [2023-11-23 06:44:26,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 227 transitions. [2023-11-23 06:44:26,642 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 227 transitions. Word has length 66 [2023-11-23 06:44:26,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:44:26,642 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 227 transitions. [2023-11-23 06:44:26,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-23 06:44:26,642 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 227 transitions. [2023-11-23 06:44:26,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 06:44:26,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:44:26,644 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:44:26,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 06:44:26,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:26,860 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:44:26,861 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:44:26,861 INFO L85 PathProgramCache]: Analyzing trace with hash -444922421, now seen corresponding path program 1 times [2023-11-23 06:44:26,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:44:26,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954725000] [2023-11-23 06:44:26,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:26,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:44:26,908 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:44:26,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1099757617] [2023-11-23 06:44:26,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:26,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:26,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:44:26,909 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 06:44:26,928 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 06:44:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:27,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 2464 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 06:44:27,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:44:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 06:44:27,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:44:27,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:44:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954725000] [2023-11-23 06:44:27,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:44:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099757617] [2023-11-23 06:44:27,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099757617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:44:27,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:44:27,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:44:27,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478740726] [2023-11-23 06:44:27,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:44:27,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:44:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:44:27,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:44:27,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:44:27,374 INFO L87 Difference]: Start difference. First operand 162 states and 227 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 06:44:27,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:44:27,731 INFO L93 Difference]: Finished difference Result 300 states and 429 transitions. [2023-11-23 06:44:27,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:44:27,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 79 [2023-11-23 06:44:27,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:44:27,734 INFO L225 Difference]: With dead ends: 300 [2023-11-23 06:44:27,734 INFO L226 Difference]: Without dead ends: 173 [2023-11-23 06:44:27,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:44:27,735 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 49 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:44:27,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 985 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:44:27,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-23 06:44:27,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2023-11-23 06:44:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 89 states have (on average 1.1685393258426966) internal successors, (104), 91 states have internal predecessors, (104), 66 states have call successors, (66), 16 states have call predecessors, (66), 17 states have return successors, (73), 65 states have call predecessors, (73), 65 states have call successors, (73) [2023-11-23 06:44:27,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 243 transitions. [2023-11-23 06:44:27,751 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 243 transitions. Word has length 79 [2023-11-23 06:44:27,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:44:27,752 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 243 transitions. [2023-11-23 06:44:27,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 6 states have internal predecessors, (42), 4 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-23 06:44:27,752 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 243 transitions. [2023-11-23 06:44:27,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-23 06:44:27,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:44:27,754 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:44:27,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 06:44:27,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 06:44:27,969 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:44:27,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:44:27,969 INFO L85 PathProgramCache]: Analyzing trace with hash -66068739, now seen corresponding path program 1 times [2023-11-23 06:44:27,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:44:27,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611613108] [2023-11-23 06:44:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:27,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:44:28,065 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:44:28,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388428017] [2023-11-23 06:44:28,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:44:28,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:44:28,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:44:28,079 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 06:44:28,081 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 06:44:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:44:33,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 201 conjunts are in the unsatisfiable core [2023-11-23 06:44:33,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:44:33,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-23 06:44:54,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:44:54,502 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 67 treesize of output 55 [2023-11-23 06:45:17,314 WARN L293 SmtUtils]: Spent 6.71s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-23 06:45:36,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-23 06:45:37,640 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 67 treesize of output 55 [2023-11-23 06:45:40,263 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 58 proven. 6 refuted. 8 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-23 06:45:40,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:45:51,032 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 54 treesize of output 50 [2023-11-23 06:45:51,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:45:51,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611613108] [2023-11-23 06:45:51,782 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:45:51,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388428017] [2023-11-23 06:45:51,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388428017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:45:51,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:45:51,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2023-11-23 06:45:51,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993349555] [2023-11-23 06:45:51,783 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-23 06:45:51,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-23 06:45:51,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:45:51,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-23 06:45:51,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2258, Unknown=22, NotChecked=0, Total=2450 [2023-11-23 06:45:51,785 INFO L87 Difference]: Start difference. First operand 173 states and 243 transitions. Second operand has 38 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 31 states have internal predecessors, (63), 11 states have call successors, (17), 7 states have call predecessors, (17), 11 states have return successors, (16), 11 states have call predecessors, (16), 10 states have call successors, (16) [2023-11-23 06:46:02,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:46:08,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:46:11,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:46:13,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:46:34,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:47:46,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:48:42,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:48:44,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:48:46,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:48:48,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:48:50,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:48:52,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:48:54,777 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:48:56,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-23 06:48:58,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] Killed by 15