./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme --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 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:04:44,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:04:44,878 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 12:04:44,885 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:04:44,886 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:04:44,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:04:44,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:04:44,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:04:44,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:04:44,933 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:04:44,933 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:04:44,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:04:44,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:04:44,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:04:44,937 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:04:44,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:04:44,938 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:04:44,938 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:04:44,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:04:44,939 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:04:44,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:04:44,940 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:04:44,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:04:44,941 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:04:44,942 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:04:44,942 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:04:44,943 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:04:44,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:04:44,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:04:44,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:04:44,945 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:04:44,946 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:04:44,946 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:04:44,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:04:44,947 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:04:44,947 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:04:44,947 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:04:44,947 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:04:44,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:04:44,948 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53c422310795c2e7f5b0f72e5a73eee871aa1645d7b73c98001e28d2bf239333 [2023-11-26 12:04:45,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:04:45,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:04:45,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:04:45,247 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:04:45,247 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:04:45,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2023-11-26 12:04:48,667 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:04:49,365 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:04:49,366 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i [2023-11-26 12:04:49,415 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/data/ccc8f87b3/780575688c764273b6b8538925fc6539/FLAGf9cab1edd [2023-11-26 12:04:49,433 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/data/ccc8f87b3/780575688c764273b6b8538925fc6539 [2023-11-26 12:04:49,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:04:49,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:04:49,443 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:49,443 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:04:49,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:04:49,451 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:49" (1/1) ... [2023-11-26 12:04:49,452 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7883d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:49, skipping insertion in model container [2023-11-26 12:04:49,453 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:49" (1/1) ... [2023-11-26 12:04:49,609 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:04:49,928 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2023-11-26 12:04:49,936 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2023-11-26 12:04:50,953 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:50,954 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:50,954 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:50,955 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:50,957 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:50,974 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:50,979 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:50,981 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:50,983 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:50,986 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:50,988 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:50,990 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:50,991 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,346 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 12:04:51,348 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 12:04:51,349 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 12:04:51,351 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 12:04:51,353 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 12:04:51,354 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 12:04:51,355 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 12:04:51,355 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 12:04:51,356 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 12:04:51,357 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 12:04:51,506 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,513 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:51,621 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:04:51,651 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4495,4508] [2023-11-26 12:04:51,654 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/sv-benchmarks/c/aws-c-common/aws_array_list_length_harness.i[4555,4568] [2023-11-26 12:04:51,763 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,772 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,773 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,773 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,775 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,788 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,791 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,792 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,793 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,795 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,796 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,797 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,801 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,835 WARN L638 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-26 12:04:51,837 WARN L638 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-26 12:04:51,837 WARN L638 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-26 12:04:51,838 WARN L638 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-26 12:04:51,839 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-26 12:04:51,840 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-26 12:04:51,840 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-26 12:04:51,841 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-26 12:04:51,841 WARN L638 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-26 12:04:51,842 WARN L638 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-26 12:04:51,868 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,873 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-26 12:04:51,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7747-7758] [2023-11-26 12:04:51,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:52,222 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,223 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,225 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,225 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,225 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,226 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,226 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,227 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,227 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,227 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,228 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,229 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,229 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,229 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,230 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 12:04:52,241 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:04:52,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52 WrapperNode [2023-11-26 12:04:52,242 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:52,243 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:04:52,244 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:04:52,244 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:04:52,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (1/1) ... [2023-11-26 12:04:52,344 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (1/1) ... [2023-11-26 12:04:52,429 INFO L138 Inliner]: procedures = 689, calls = 1683, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 593 [2023-11-26 12:04:52,430 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:04:52,430 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:04:52,430 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:04:52,431 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:04:52,442 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (1/1) ... [2023-11-26 12:04:52,446 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (1/1) ... [2023-11-26 12:04:52,455 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (1/1) ... [2023-11-26 12:04:52,545 INFO L175 MemorySlicer]: Split 304 memory accesses to 7 slices as follows [2, 236, 3, 6, 7, 47, 3]. 78 percent of accesses are in the largest equivalence class. The 257 initializations are split as follows [2, 236, 1, 0, 5, 10, 3]. The 6 writes are split as follows [0, 0, 1, 2, 0, 3, 0]. [2023-11-26 12:04:52,545 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (1/1) ... [2023-11-26 12:04:52,545 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (1/1) ... [2023-11-26 12:04:52,586 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (1/1) ... [2023-11-26 12:04:52,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (1/1) ... [2023-11-26 12:04:52,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (1/1) ... [2023-11-26 12:04:52,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (1/1) ... [2023-11-26 12:04:52,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:04:52,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:04:52,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:04:52,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:04:52,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (1/1) ... [2023-11-26 12:04:52,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:04:52,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:52,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:04:52,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:04:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:04:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-26 12:04:52,692 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-26 12:04:52,692 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-26 12:04:52,692 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-26 12:04:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-26 12:04:52,693 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-26 12:04:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 12:04:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 12:04:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 12:04:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 12:04:52,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 12:04:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 12:04:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-26 12:04:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-26 12:04:52,694 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-26 12:04:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 12:04:52,694 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 12:04:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:04:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:04:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 12:04:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 12:04:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 12:04:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-26 12:04:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-26 12:04:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-26 12:04:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-26 12:04:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:04:52,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:04:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-26 12:04:52,696 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-26 12:04:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-26 12:04:52,697 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-26 12:04:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-26 12:04:52,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-26 12:04:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-26 12:04:52,697 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-26 12:04:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 12:04:52,698 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 12:04:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:04:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 12:04:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 12:04:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 12:04:52,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-26 12:04:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-26 12:04:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-26 12:04:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-26 12:04:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 12:04:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 12:04:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 12:04:52,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-26 12:04:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-26 12:04:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-26 12:04:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-26 12:04:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-26 12:04:52,700 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-26 12:04:52,700 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-26 12:04:52,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-26 12:04:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:04:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:04:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:04:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 12:04:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 12:04:52,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 12:04:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-26 12:04:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-26 12:04:52,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-26 12:04:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:04:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:04:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:04:52,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 12:04:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 12:04:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 12:04:52,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 12:04:53,071 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:04:53,073 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:04:53,993 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:04:54,177 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:04:54,177 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 12:04:54,178 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:54 BoogieIcfgContainer [2023-11-26 12:04:54,179 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:04:54,183 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:04:54,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:04:54,190 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:04:54,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:04:49" (1/3) ... [2023-11-26 12:04:54,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22627908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:04:54, skipping insertion in model container [2023-11-26 12:04:54,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:52" (2/3) ... [2023-11-26 12:04:54,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22627908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:04:54, skipping insertion in model container [2023-11-26 12:04:54,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:54" (3/3) ... [2023-11-26 12:04:54,200 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_length_harness.i [2023-11-26 12:04:54,224 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:04:54,225 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:04:54,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:04:54,319 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;@6054bad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:04:54,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:04:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 64 states have (on average 1.25) internal successors, (80), 65 states have internal predecessors, (80), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-26 12:04:54,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 12:04:54,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:54,353 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, 1, 1] [2023-11-26 12:04:54,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:54,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:54,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1885822886, now seen corresponding path program 1 times [2023-11-26 12:04:54,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:54,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020137096] [2023-11-26 12:04:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:54,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:04:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:04:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:04:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 12:04:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:04:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 12:04:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 12:04:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:04:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 12:04:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 12:04:55,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 12:04:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:55,471 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-26 12:04:55,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:55,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020137096] [2023-11-26 12:04:55,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020137096] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:55,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:55,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:04:55,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034341419] [2023-11-26 12:04:55,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:55,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:55,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:55,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:55,541 INFO L87 Difference]: Start difference. First operand has 109 states, 64 states have (on average 1.25) internal successors, (80), 65 states have internal predecessors, (80), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 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) [2023-11-26 12:04:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:56,616 INFO L93 Difference]: Finished difference Result 223 states and 312 transitions. [2023-11-26 12:04:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:04:56,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 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 68 [2023-11-26 12:04:56,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:56,632 INFO L225 Difference]: With dead ends: 223 [2023-11-26 12:04:56,632 INFO L226 Difference]: Without dead ends: 113 [2023-11-26 12:04:56,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:04:56,642 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 69 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:56,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 116 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 12:04:56,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-26 12:04:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2023-11-26 12:04:56,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 61 states have internal predecessors, (71), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-26 12:04:56,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2023-11-26 12:04:56,711 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 68 [2023-11-26 12:04:56,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:56,712 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2023-11-26 12:04:56,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 2 states have internal predecessors, (26), 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) [2023-11-26 12:04:56,713 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2023-11-26 12:04:56,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-26 12:04:56,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:56,718 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, 1, 1] [2023-11-26 12:04:56,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:04:56,718 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:56,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:56,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1233035624, now seen corresponding path program 1 times [2023-11-26 12:04:56,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:56,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888643543] [2023-11-26 12:04:56,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:56,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 12:04:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-26 12:04:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 12:04:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-26 12:04:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 12:04:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 12:04:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 12:04:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 12:04:57,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 12:04:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 12:04:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-26 12:04:57,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-26 12:04:57,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:57,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888643543] [2023-11-26 12:04:57,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888643543] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:04:57,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313887533] [2023-11-26 12:04:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:57,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:57,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:57,641 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:57,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:04:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:58,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 2060 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 12:04:58,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:58,394 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-26 12:04:58,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:04:58,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313887533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:58,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:04:58,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-26 12:04:58,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091581349] [2023-11-26 12:04:58,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:58,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:04:58,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:58,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:04:58,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 12:04:58,408 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-26 12:04:58,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:58,932 INFO L93 Difference]: Finished difference Result 176 states and 223 transitions. [2023-11-26 12:04:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:04:58,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 68 [2023-11-26 12:04:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:58,939 INFO L225 Difference]: With dead ends: 176 [2023-11-26 12:04:58,940 INFO L226 Difference]: Without dead ends: 105 [2023-11-26 12:04:58,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 12:04:58,947 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 28 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:58,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 382 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:04:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-26 12:04:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-11-26 12:04:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 61 states have (on average 1.180327868852459) internal successors, (72), 63 states have internal predecessors, (72), 30 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (30), 28 states have call predecessors, (30), 28 states have call successors, (30) [2023-11-26 12:04:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 132 transitions. [2023-11-26 12:04:59,000 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 132 transitions. Word has length 68 [2023-11-26 12:04:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:59,001 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 132 transitions. [2023-11-26 12:04:59,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2023-11-26 12:04:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 132 transitions. [2023-11-26 12:04:59,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-26 12:04:59,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:59,011 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, 1, 1] [2023-11-26 12:04:59,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:59,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:59,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:59,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash 759306355, now seen corresponding path program 1 times [2023-11-26 12:04:59,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:59,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431248941] [2023-11-26 12:04:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:59,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:59,342 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:04:59,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105621224] [2023-11-26 12:04:59,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:59,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:59,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:59,344 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:59,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:05:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:00,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 2199 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 12:05:00,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 12:05:00,152 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 12:05:00,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:00,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431248941] [2023-11-26 12:05:00,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:05:00,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105621224] [2023-11-26 12:05:00,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105621224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:05:00,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:05:00,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 12:05:00,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687232357] [2023-11-26 12:05:00,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:05:00,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 12:05:00,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:00,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 12:05:00,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:05:00,161 INFO L87 Difference]: Start difference. First operand 105 states and 132 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 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) [2023-11-26 12:05:00,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:05:00,593 INFO L93 Difference]: Finished difference Result 166 states and 205 transitions. [2023-11-26 12:05:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 12:05:00,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 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 81 [2023-11-26 12:05:00,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:05:00,596 INFO L225 Difference]: With dead ends: 166 [2023-11-26 12:05:00,596 INFO L226 Difference]: Without dead ends: 103 [2023-11-26 12:05:00,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 12:05:00,599 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 34 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 12:05:00,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 560 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 12:05:00,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-26 12:05:00,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-26 12:05:00,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 61 states have internal predecessors, (70), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-26 12:05:00,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 128 transitions. [2023-11-26 12:05:00,619 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 128 transitions. Word has length 81 [2023-11-26 12:05:00,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:05:00,619 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 128 transitions. [2023-11-26 12:05:00,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 6 states have internal predecessors, (44), 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) [2023-11-26 12:05:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 128 transitions. [2023-11-26 12:05:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-26 12:05:00,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:05:00,622 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, 1, 1] [2023-11-26 12:05:00,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 12:05:00,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:00,834 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:05:00,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:05:00,834 INFO L85 PathProgramCache]: Analyzing trace with hash -607058043, now seen corresponding path program 1 times [2023-11-26 12:05:00,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:05:00,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473822270] [2023-11-26 12:05:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:00,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:05:00,931 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 12:05:00,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862356015] [2023-11-26 12:05:00,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:05:00,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:05:00,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:05:00,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:05:00,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b8216a9-c74c-491c-85c8-5f128d5d6569/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 12:05:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:05:01,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 181 conjunts are in the unsatisfiable core [2023-11-26 12:05:01,697 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:05:01,858 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 [2023-11-26 12:05:01,988 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 [2023-11-26 12:05:06,035 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 [2023-11-26 12:05:06,634 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 [2023-11-26 12:05:13,976 WARN L293 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-26 12:05:20,003 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 60 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:05:20,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:05:39,270 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 [2023-11-26 12:05:42,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:05:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473822270] [2023-11-26 12:05:42,016 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 12:05:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862356015] [2023-11-26 12:05:42,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862356015] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:05:42,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 12:05:42,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2023-11-26 12:05:42,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060034779] [2023-11-26 12:05:42,018 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 12:05:42,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-26 12:05:42,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:42,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-26 12:05:42,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2081, Unknown=0, NotChecked=0, Total=2256 [2023-11-26 12:05:42,022 INFO L87 Difference]: Start difference. First operand 103 states and 128 transitions. Second operand has 36 states, 29 states have (on average 2.206896551724138) internal successors, (64), 28 states have internal predecessors, (64), 13 states have call successors, (19), 5 states have call predecessors, (19), 9 states have return successors, (17), 12 states have call predecessors, (17), 11 states have call successors, (17)