./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl --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 f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:08:51,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:08:51,461 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:08:51,467 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:08:51,468 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:08:51,495 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:08:51,496 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:08:51,497 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:08:51,498 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:08:51,499 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:08:51,500 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:08:51,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:08:51,501 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:08:51,502 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:08:51,503 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:08:51,504 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:08:51,504 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:08:51,505 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:08:51,506 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:08:51,506 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:08:51,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:08:51,527 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:08:51,528 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:08:51,529 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:08:51,529 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:08:51,530 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:51,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:08:51,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:08:51,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:08:51,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:08:51,534 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:08:51,534 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:08:51,535 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:08:51,535 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:08:51,536 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:08:51,536 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:08:51,536 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_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4db5fb03820aea666082345ea177387bf1c218ce33dad19402cb646ed5abf58 [2023-11-12 02:08:51,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:08:51,945 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:08:51,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:08:51,950 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:08:51,951 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:08:51,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2023-11-12 02:08:55,188 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:08:55,768 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:08:55,769 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i [2023-11-12 02:08:55,818 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/data/565526a3d/c8208af01bcc4745b6eb5e6417ede2e2/FLAG21abd4ab9 [2023-11-12 02:08:55,839 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/data/565526a3d/c8208af01bcc4745b6eb5e6417ede2e2 [2023-11-12 02:08:55,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:08:55,847 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:08:55,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:55,853 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:08:55,859 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:08:55,860 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:55" (1/1) ... [2023-11-12 02:08:55,864 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4999e6d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:55, skipping insertion in model container [2023-11-12 02:08:55,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:08:55" (1/1) ... [2023-11-12 02:08:56,020 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:08:56,377 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_a0d45486-7095-4cb4-b86f-3a026ad708f6/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2023-11-12 02:08:56,387 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_a0d45486-7095-4cb4-b86f-3a026ad708f6/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4565,4578] [2023-11-12 02:08:57,416 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:57,417 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:57,418 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:57,419 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:57,420 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:57,435 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:57,436 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:57,437 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:57,438 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:57,858 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 02:08:57,859 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 02:08:57,861 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 02:08:57,862 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 02:08:57,864 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 02:08:57,865 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 02:08:57,866 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 02:08:57,867 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 02:08:57,868 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 02:08:57,868 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 02:08:58,044 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,045 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,163 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:58,279 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:08:58,306 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_a0d45486-7095-4cb4-b86f-3a026ad708f6/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4505,4518] [2023-11-12 02:08:58,307 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_a0d45486-7095-4cb4-b86f-3a026ad708f6/sv-benchmarks/c/aws-c-common/aws_priority_queue_init_dynamic_harness-1.i[4565,4578] [2023-11-12 02:08:58,404 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,405 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,406 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,407 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,408 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,420 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,422 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,423 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,424 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,488 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 02:08:58,489 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 02:08:58,490 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 02:08:58,491 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 02:08:58,492 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 02:08:58,493 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 02:08:58,494 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 02:08:58,494 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 02:08:58,495 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 02:08:58,495 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 02:08:58,552 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,552 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:08:58,567 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2023-11-12 02:08:58,590 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:08:58,796 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,797 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,797 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,797 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,797 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,797 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,798 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,798 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,798 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,798 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,798 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,799 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,799 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,799 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,799 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:08:58,807 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:08:58,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58 WrapperNode [2023-11-12 02:08:58,808 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:08:58,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:58,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:08:58,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:08:58,818 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58" (1/1) ... [2023-11-12 02:08:58,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58" (1/1) ... [2023-11-12 02:08:58,973 INFO L138 Inliner]: procedures = 688, calls = 1518, calls flagged for inlining = 52, calls inlined = 9, statements flattened = 740 [2023-11-12 02:08:58,973 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:08:58,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:08:58,974 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:08:58,974 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:08:58,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58" (1/1) ... [2023-11-12 02:08:58,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58" (1/1) ... [2023-11-12 02:08:58,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58" (1/1) ... [2023-11-12 02:08:59,004 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58" (1/1) ... [2023-11-12 02:08:59,055 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58" (1/1) ... [2023-11-12 02:08:59,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58" (1/1) ... [2023-11-12 02:08:59,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58" (1/1) ... [2023-11-12 02:08:59,089 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58" (1/1) ... [2023-11-12 02:08:59,105 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:08:59,111 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:08:59,111 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:08:59,111 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:08:59,112 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58" (1/1) ... [2023-11-12 02:08:59,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:08:59,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:08:59,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:08:59,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:08:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-12 02:08:59,197 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-12 02:08:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:08:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-12 02:08:59,198 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-12 02:08:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 02:08:59,198 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 02:08:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-12 02:08:59,198 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-12 02:08:59,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:08:59,199 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 02:08:59,199 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 02:08:59,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 02:08:59,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 02:08:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:08:59,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:08:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:08:59,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:08:59,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:08:59,203 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 02:08:59,203 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 02:08:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2023-11-12 02:08:59,204 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2023-11-12 02:08:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 02:08:59,204 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 02:08:59,204 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-12 02:08:59,205 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-12 02:08:59,205 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-12 02:08:59,205 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-12 02:08:59,205 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:08:59,205 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:08:59,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:08:59,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:08:59,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:08:59,207 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 02:08:59,207 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 02:08:59,207 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 02:08:59,208 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 02:08:59,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:08:59,208 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-12 02:08:59,208 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-12 02:08:59,209 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-12 02:08:59,209 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-12 02:08:59,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:08:59,628 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:08:59,631 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:09:00,860 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:09:00,874 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:09:00,874 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:09:00,877 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:00 BoogieIcfgContainer [2023-11-12 02:09:00,877 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:09:00,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:09:00,881 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:09:00,885 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:09:00,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:08:55" (1/3) ... [2023-11-12 02:09:00,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0ec79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:00, skipping insertion in model container [2023-11-12 02:09:00,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:08:58" (2/3) ... [2023-11-12 02:09:00,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d0ec79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:09:00, skipping insertion in model container [2023-11-12 02:09:00,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:09:00" (3/3) ... [2023-11-12 02:09:00,890 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_init_dynamic_harness-1.i [2023-11-12 02:09:00,912 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:09:00,912 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:09:00,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:09:01,001 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;@799c6008, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:09:01,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:09:01,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 134 states have internal predecessors, (168), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2023-11-12 02:09:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-12 02:09:01,029 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:01,030 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:01,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:01,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1790997486, now seen corresponding path program 1 times [2023-11-12 02:09:01,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:01,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969539029] [2023-11-12 02:09:01,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:01,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:01,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:01,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969539029] [2023-11-12 02:09:01,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:09:01,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039688145] [2023-11-12 02:09:01,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:01,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:01,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:01,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:01,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:09:02,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:02,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 2206 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-12 02:09:02,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:02,364 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-12 02:09:02,364 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:02,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039688145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:02,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:02,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:09:02,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600993753] [2023-11-12 02:09:02,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:02,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:09:02,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:02,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:09:02,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:09:02,448 INFO L87 Difference]: Start difference. First operand has 206 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 134 states have internal predecessors, (168), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-12 02:09:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:02,509 INFO L93 Difference]: Finished difference Result 403 states and 587 transitions. [2023-11-12 02:09:02,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:09:02,511 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2023-11-12 02:09:02,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:02,528 INFO L225 Difference]: With dead ends: 403 [2023-11-12 02:09:02,528 INFO L226 Difference]: Without dead ends: 199 [2023-11-12 02:09:02,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:09:02,538 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:02,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:09:02,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-12 02:09:02,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2023-11-12 02:09:02,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 126 states have (on average 1.2222222222222223) internal successors, (154), 128 states have internal predecessors, (154), 56 states have call successors, (56), 16 states have call predecessors, (56), 16 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-12 02:09:02,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 264 transitions. [2023-11-12 02:09:02,613 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 264 transitions. Word has length 112 [2023-11-12 02:09:02,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:02,615 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 264 transitions. [2023-11-12 02:09:02,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-12 02:09:02,616 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 264 transitions. [2023-11-12 02:09:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-12 02:09:02,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:02,620 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:02,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:02,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 02:09:02,831 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:02,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:02,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1341950599, now seen corresponding path program 1 times [2023-11-12 02:09:02,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:02,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208561] [2023-11-12 02:09:02,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:02,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:02,946 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:02,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162162102] [2023-11-12 02:09:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:02,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:02,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:02,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:02,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:09:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:03,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 2360 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:09:03,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:03,668 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2023-11-12 02:09:03,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:03,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:03,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208561] [2023-11-12 02:09:03,669 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:03,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162162102] [2023-11-12 02:09:03,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162162102] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:03,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:03,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:09:03,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912293358] [2023-11-12 02:09:03,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:03,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:09:03,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:03,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:09:03,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:09:03,677 INFO L87 Difference]: Start difference. First operand 199 states and 264 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-12 02:09:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:03,821 INFO L93 Difference]: Finished difference Result 303 states and 405 transitions. [2023-11-12 02:09:03,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:09:03,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 146 [2023-11-12 02:09:03,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:03,835 INFO L225 Difference]: With dead ends: 303 [2023-11-12 02:09:03,835 INFO L226 Difference]: Without dead ends: 204 [2023-11-12 02:09:03,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:03,839 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 2 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:03,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1038 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:09:03,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-12 02:09:03,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2023-11-12 02:09:03,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 130 states have (on average 1.2153846153846153) internal successors, (158), 132 states have internal predecessors, (158), 56 states have call successors, (56), 16 states have call predecessors, (56), 17 states have return successors, (57), 55 states have call predecessors, (57), 54 states have call successors, (57) [2023-11-12 02:09:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 271 transitions. [2023-11-12 02:09:03,897 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 271 transitions. Word has length 146 [2023-11-12 02:09:03,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:03,899 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 271 transitions. [2023-11-12 02:09:03,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-12 02:09:03,899 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 271 transitions. [2023-11-12 02:09:03,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-12 02:09:03,915 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:03,915 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:03,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:04,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:04,128 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:04,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:04,129 INFO L85 PathProgramCache]: Analyzing trace with hash 384149530, now seen corresponding path program 1 times [2023-11-12 02:09:04,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:04,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060550282] [2023-11-12 02:09:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:04,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:04,271 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:04,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307962163] [2023-11-12 02:09:04,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:04,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:04,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:04,278 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:04,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:09:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:04,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 2380 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-12 02:09:04,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:04,981 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2023-11-12 02:09:04,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:09:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-11-12 02:09:05,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:05,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060550282] [2023-11-12 02:09:05,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:05,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307962163] [2023-11-12 02:09:05,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307962163] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:09:05,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:09:05,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 12 [2023-11-12 02:09:05,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060021636] [2023-11-12 02:09:05,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:05,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:09:05,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:05,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:09:05,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:09:05,224 INFO L87 Difference]: Start difference. First operand 204 states and 271 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-12 02:09:05,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:05,348 INFO L93 Difference]: Finished difference Result 212 states and 279 transitions. [2023-11-12 02:09:05,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:09:05,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2023-11-12 02:09:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:05,365 INFO L225 Difference]: With dead ends: 212 [2023-11-12 02:09:05,366 INFO L226 Difference]: Without dead ends: 210 [2023-11-12 02:09:05,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:09:05,370 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 4 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:05,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1031 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:09:05,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-12 02:09:05,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2023-11-12 02:09:05,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 133 states have (on average 1.2105263157894737) internal successors, (161), 136 states have internal predecessors, (161), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-12 02:09:05,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 276 transitions. [2023-11-12 02:09:05,435 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 276 transitions. Word has length 147 [2023-11-12 02:09:05,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:05,437 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 276 transitions. [2023-11-12 02:09:05,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2023-11-12 02:09:05,440 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 276 transitions. [2023-11-12 02:09:05,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-12 02:09:05,443 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:05,444 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:05,466 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:05,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:05,659 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:05,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:05,659 INFO L85 PathProgramCache]: Analyzing trace with hash 385996572, now seen corresponding path program 1 times [2023-11-12 02:09:05,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:05,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739572783] [2023-11-12 02:09:05,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:05,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:05,795 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:05,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078665142] [2023-11-12 02:09:05,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:05,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:05,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:05,799 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:05,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:09:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:06,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 2385 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:09:06,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:06,458 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-12 02:09:06,458 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:06,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:06,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739572783] [2023-11-12 02:09:06,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:06,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078665142] [2023-11-12 02:09:06,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078665142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:06,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:06,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:09:06,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949774559] [2023-11-12 02:09:06,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:06,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:09:06,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:06,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:09:06,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:09:06,462 INFO L87 Difference]: Start difference. First operand 209 states and 276 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-12 02:09:06,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:06,547 INFO L93 Difference]: Finished difference Result 403 states and 525 transitions. [2023-11-12 02:09:06,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:09:06,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 147 [2023-11-12 02:09:06,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:06,550 INFO L225 Difference]: With dead ends: 403 [2023-11-12 02:09:06,550 INFO L226 Difference]: Without dead ends: 209 [2023-11-12 02:09:06,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:09:06,554 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 14 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:06,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1267 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:09:06,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-12 02:09:06,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2023-11-12 02:09:06,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 133 states have (on average 1.2030075187969924) internal successors, (160), 136 states have internal predecessors, (160), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-12 02:09:06,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 275 transitions. [2023-11-12 02:09:06,572 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 275 transitions. Word has length 147 [2023-11-12 02:09:06,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:06,573 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 275 transitions. [2023-11-12 02:09:06,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-12 02:09:06,573 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 275 transitions. [2023-11-12 02:09:06,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-12 02:09:06,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:06,576 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:06,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:06,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:06,787 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:06,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:06,788 INFO L85 PathProgramCache]: Analyzing trace with hash -760188724, now seen corresponding path program 1 times [2023-11-12 02:09:06,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:06,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278699090] [2023-11-12 02:09:06,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:06,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:06,880 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:06,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [25895840] [2023-11-12 02:09:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:06,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:06,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:06,881 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:06,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:09:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:07,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:09:07,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2023-11-12 02:09:07,562 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:09:07,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:07,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278699090] [2023-11-12 02:09:07,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:07,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25895840] [2023-11-12 02:09:07,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25895840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:09:07,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:09:07,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:09:07,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519778318] [2023-11-12 02:09:07,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:09:07,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:09:07,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:07,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:09:07,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:07,567 INFO L87 Difference]: Start difference. First operand 209 states and 275 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-12 02:09:07,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:07,596 INFO L93 Difference]: Finished difference Result 399 states and 522 transitions. [2023-11-12 02:09:07,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:09:07,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 151 [2023-11-12 02:09:07,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:07,600 INFO L225 Difference]: With dead ends: 399 [2023-11-12 02:09:07,600 INFO L226 Difference]: Without dead ends: 211 [2023-11-12 02:09:07,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:09:07,604 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 1 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:07,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 518 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:09:07,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-12 02:09:07,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 210. [2023-11-12 02:09:07,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 134 states have (on average 1.2014925373134329) internal successors, (161), 137 states have internal predecessors, (161), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-12 02:09:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 276 transitions. [2023-11-12 02:09:07,634 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 276 transitions. Word has length 151 [2023-11-12 02:09:07,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:07,635 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 276 transitions. [2023-11-12 02:09:07,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-12 02:09:07,636 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 276 transitions. [2023-11-12 02:09:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-12 02:09:07,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:07,639 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:07,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:07,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:07,853 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:07,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:07,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1893390704, now seen corresponding path program 1 times [2023-11-12 02:09:07,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:07,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868318115] [2023-11-12 02:09:07,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:07,944 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:07,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1151818685] [2023-11-12 02:09:07,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:07,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:07,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:07,946 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:07,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:09:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:09:08,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 2439 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:09:08,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:08,739 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 160 proven. 1 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-12 02:09:08,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:09:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-11-12 02:09:09,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:09,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868318115] [2023-11-12 02:09:09,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:09,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151818685] [2023-11-12 02:09:09,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151818685] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:09:09,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:09:09,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-12 02:09:09,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452420349] [2023-11-12 02:09:09,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:09:09,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:09:09,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:09,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:09:09,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:09:09,083 INFO L87 Difference]: Start difference. First operand 210 states and 276 transitions. Second operand has 13 states, 11 states have (on average 8.272727272727273) internal successors, (91), 13 states have internal predecessors, (91), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-12 02:09:09,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:09,322 INFO L93 Difference]: Finished difference Result 409 states and 530 transitions. [2023-11-12 02:09:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:09:09,323 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.272727272727273) internal successors, (91), 13 states have internal predecessors, (91), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 155 [2023-11-12 02:09:09,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:09,325 INFO L225 Difference]: With dead ends: 409 [2023-11-12 02:09:09,325 INFO L226 Difference]: Without dead ends: 213 [2023-11-12 02:09:09,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:09:09,327 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 18 mSDsluCounter, 2015 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2271 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:09,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2271 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:09:09,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-12 02:09:09,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2023-11-12 02:09:09,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 136 states have (on average 1.1985294117647058) internal successors, (163), 139 states have internal predecessors, (163), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-12 02:09:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 278 transitions. [2023-11-12 02:09:09,340 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 278 transitions. Word has length 155 [2023-11-12 02:09:09,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:09,341 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 278 transitions. [2023-11-12 02:09:09,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.272727272727273) internal successors, (91), 13 states have internal predecessors, (91), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-12 02:09:09,342 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 278 transitions. [2023-11-12 02:09:09,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-12 02:09:09,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:09,344 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:09,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:09,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-12 02:09:09,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:09,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:09,557 INFO L85 PathProgramCache]: Analyzing trace with hash 143055444, now seen corresponding path program 2 times [2023-11-12 02:09:09,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:09,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085472472] [2023-11-12 02:09:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:09,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:09,660 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:09,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962996229] [2023-11-12 02:09:09,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:09:09,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:09,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:09,677 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:09,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:09:10,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:09:10,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:09:10,758 INFO L262 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-12 02:09:10,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 168 proven. 4 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2023-11-12 02:09:10,903 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:09:11,388 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-11-12 02:09:11,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:11,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085472472] [2023-11-12 02:09:11,389 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:11,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962996229] [2023-11-12 02:09:11,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962996229] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:09:11,390 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:09:11,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-11-12 02:09:11,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986747475] [2023-11-12 02:09:11,390 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:09:11,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-12 02:09:11,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:11,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-12 02:09:11,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:09:11,393 INFO L87 Difference]: Start difference. First operand 212 states and 278 transitions. Second operand has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 17 states have internal predecessors, (95), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-12 02:09:11,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:11,727 INFO L93 Difference]: Finished difference Result 413 states and 534 transitions. [2023-11-12 02:09:11,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:09:11,728 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 17 states have internal predecessors, (95), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 159 [2023-11-12 02:09:11,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:11,731 INFO L225 Difference]: With dead ends: 413 [2023-11-12 02:09:11,731 INFO L226 Difference]: Without dead ends: 215 [2023-11-12 02:09:11,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2023-11-12 02:09:11,733 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 24 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:11,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2525 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:09:11,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-12 02:09:11,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2023-11-12 02:09:11,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 138 states have (on average 1.1956521739130435) internal successors, (165), 141 states have internal predecessors, (165), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-12 02:09:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 280 transitions. [2023-11-12 02:09:11,747 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 280 transitions. Word has length 159 [2023-11-12 02:09:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:11,748 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 280 transitions. [2023-11-12 02:09:11,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.333333333333333) internal successors, (95), 17 states have internal predecessors, (95), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-12 02:09:11,748 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 280 transitions. [2023-11-12 02:09:11,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-12 02:09:11,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:11,751 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:11,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:11,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 02:09:11,965 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:11,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:11,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1731818472, now seen corresponding path program 3 times [2023-11-12 02:09:11,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:11,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591358947] [2023-11-12 02:09:11,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:11,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:12,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:12,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049090753] [2023-11-12 02:09:12,057 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:09:12,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:12,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:12,059 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:12,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:09:15,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-12 02:09:15,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:09:15,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 2102 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-12 02:09:15,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 50 proven. 9 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2023-11-12 02:09:15,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:09:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 35 proven. 9 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2023-11-12 02:09:16,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:16,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591358947] [2023-11-12 02:09:16,169 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:16,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049090753] [2023-11-12 02:09:16,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049090753] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:09:16,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:09:16,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-11-12 02:09:16,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657914515] [2023-11-12 02:09:16,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:09:16,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-12 02:09:16,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:16,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-12 02:09:16,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:09:16,173 INFO L87 Difference]: Start difference. First operand 214 states and 280 transitions. Second operand has 17 states, 15 states have (on average 5.666666666666667) internal successors, (85), 17 states have internal predecessors, (85), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-12 02:09:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:16,472 INFO L93 Difference]: Finished difference Result 417 states and 538 transitions. [2023-11-12 02:09:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:09:16,473 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.666666666666667) internal successors, (85), 17 states have internal predecessors, (85), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) Word has length 163 [2023-11-12 02:09:16,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:16,476 INFO L225 Difference]: With dead ends: 417 [2023-11-12 02:09:16,476 INFO L226 Difference]: Without dead ends: 217 [2023-11-12 02:09:16,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2023-11-12 02:09:16,478 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 19 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2278 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:16,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2278 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:09:16,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2023-11-12 02:09:16,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 216. [2023-11-12 02:09:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 143 states have internal predecessors, (167), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-12 02:09:16,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 282 transitions. [2023-11-12 02:09:16,494 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 282 transitions. Word has length 163 [2023-11-12 02:09:16,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:16,494 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 282 transitions. [2023-11-12 02:09:16,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.666666666666667) internal successors, (85), 17 states have internal predecessors, (85), 6 states have call successors, (30), 2 states have call predecessors, (30), 5 states have return successors, (30), 6 states have call predecessors, (30), 6 states have call successors, (30) [2023-11-12 02:09:16,495 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 282 transitions. [2023-11-12 02:09:16,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-12 02:09:16,498 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:16,498 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 8, 8, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:16,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:16,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:16,714 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:16,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:16,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1856685092, now seen corresponding path program 4 times [2023-11-12 02:09:16,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:16,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653165663] [2023-11-12 02:09:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:16,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:16,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:16,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583406881] [2023-11-12 02:09:16,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 02:09:16,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:16,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:16,840 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:16,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:09:17,770 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 02:09:17,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:09:17,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 2553 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-12 02:09:17,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 196 proven. 16 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2023-11-12 02:09:17,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:09:18,484 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2023-11-12 02:09:18,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:18,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653165663] [2023-11-12 02:09:18,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:18,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583406881] [2023-11-12 02:09:18,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583406881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:09:18,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:09:18,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-11-12 02:09:18,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247831351] [2023-11-12 02:09:18,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:09:18,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-12 02:09:18,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:18,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-12 02:09:18,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-12 02:09:18,489 INFO L87 Difference]: Start difference. First operand 216 states and 282 transitions. Second operand has 19 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 19 states have internal predecessors, (103), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-12 02:09:18,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:18,848 INFO L93 Difference]: Finished difference Result 421 states and 542 transitions. [2023-11-12 02:09:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:09:18,849 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 19 states have internal predecessors, (103), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 167 [2023-11-12 02:09:18,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:18,851 INFO L225 Difference]: With dead ends: 421 [2023-11-12 02:09:18,852 INFO L226 Difference]: Without dead ends: 219 [2023-11-12 02:09:18,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2023-11-12 02:09:18,854 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 23 mSDsluCounter, 2527 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:18,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2783 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:09:18,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-12 02:09:18,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 218. [2023-11-12 02:09:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 142 states have (on average 1.1901408450704225) internal successors, (169), 145 states have internal predecessors, (169), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-12 02:09:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 284 transitions. [2023-11-12 02:09:18,865 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 284 transitions. Word has length 167 [2023-11-12 02:09:18,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:18,866 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 284 transitions. [2023-11-12 02:09:18,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 19 states have internal predecessors, (103), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-12 02:09:18,867 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 284 transitions. [2023-11-12 02:09:18,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-12 02:09:18,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:18,869 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:18,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:19,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:19,083 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:19,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:19,083 INFO L85 PathProgramCache]: Analyzing trace with hash 2065951136, now seen corresponding path program 5 times [2023-11-12 02:09:19,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:19,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442282353] [2023-11-12 02:09:19,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:19,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:19,194 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:19,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138517602] [2023-11-12 02:09:19,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-12 02:09:19,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:19,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:19,196 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:19,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:09:21,731 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-11-12 02:09:21,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:09:21,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-12 02:09:21,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:09:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 216 proven. 25 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2023-11-12 02:09:22,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:09:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2023-11-12 02:09:22,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:09:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442282353] [2023-11-12 02:09:22,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:09:22,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138517602] [2023-11-12 02:09:22,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138517602] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:09:23,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:09:23,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2023-11-12 02:09:23,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951731769] [2023-11-12 02:09:23,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-12 02:09:23,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-12 02:09:23,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:09:23,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-12 02:09:23,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2023-11-12 02:09:23,004 INFO L87 Difference]: Start difference. First operand 218 states and 284 transitions. Second operand has 27 states, 25 states have (on average 4.28) internal successors, (107), 27 states have internal predecessors, (107), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-12 02:09:23,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:09:23,929 INFO L93 Difference]: Finished difference Result 425 states and 546 transitions. [2023-11-12 02:09:23,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-12 02:09:23,930 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 4.28) internal successors, (107), 27 states have internal predecessors, (107), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 171 [2023-11-12 02:09:23,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:09:23,932 INFO L225 Difference]: With dead ends: 425 [2023-11-12 02:09:23,932 INFO L226 Difference]: Without dead ends: 221 [2023-11-12 02:09:23,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2023-11-12 02:09:23,935 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 29 mSDsluCounter, 3031 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:09:23,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 3287 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:09:23,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-12 02:09:23,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2023-11-12 02:09:23,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 144 states have (on average 1.1875) internal successors, (171), 147 states have internal predecessors, (171), 57 states have call successors, (57), 17 states have call predecessors, (57), 18 states have return successors, (58), 55 states have call predecessors, (58), 55 states have call successors, (58) [2023-11-12 02:09:23,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 286 transitions. [2023-11-12 02:09:23,948 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 286 transitions. Word has length 171 [2023-11-12 02:09:23,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:09:23,949 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 286 transitions. [2023-11-12 02:09:23,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 4.28) internal successors, (107), 27 states have internal predecessors, (107), 6 states have call successors, (36), 2 states have call predecessors, (36), 5 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-12 02:09:23,950 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 286 transitions. [2023-11-12 02:09:23,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-12 02:09:23,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:09:23,952 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 12, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:09:23,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:09:24,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:24,163 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:09:24,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:09:24,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1453561188, now seen corresponding path program 6 times [2023-11-12 02:09:24,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:09:24,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547656459] [2023-11-12 02:09:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:09:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:09:24,267 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:09:24,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1364300986] [2023-11-12 02:09:24,267 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-12 02:09:24,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:09:24,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:09:24,269 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:09:24,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a0d45486-7095-4cb4-b86f-3a026ad708f6/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process