./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.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_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/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_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/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_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/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 40c03b884ddbc3cb1e032cd6f8f52748216dc2b56f8e56ff0fe620c91f6aac52 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:06:35,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:06:35,849 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:06:35,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:06:35,856 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:06:35,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:06:35,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:06:35,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:06:35,898 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:06:35,903 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:06:35,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:06:35,905 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:06:35,906 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:06:35,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:06:35,908 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:06:35,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:06:35,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:06:35,909 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:06:35,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:06:35,910 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:06:35,911 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:06:35,911 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:06:35,912 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:06:35,913 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:06:35,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:06:35,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:35,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:06:35,914 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:06:35,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:06:35,915 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:06:35,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:06:35,917 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:06:35,917 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:06:35,917 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:06:35,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:06:35,918 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:06:35,918 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_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c03b884ddbc3cb1e032cd6f8f52748216dc2b56f8e56ff0fe620c91f6aac52 [2023-11-12 02:06:36,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:06:36,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:06:36,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:06:36,248 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:06:36,249 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:06:36,250 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i [2023-11-12 02:06:39,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:06:40,005 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:06:40,005 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i [2023-11-12 02:06:40,047 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/data/c72439cb3/b6aba5e91233491dbd5a492310b4cc10/FLAG4f2a6d234 [2023-11-12 02:06:40,065 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/data/c72439cb3/b6aba5e91233491dbd5a492310b4cc10 [2023-11-12 02:06:40,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:06:40,070 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:06:40,073 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:40,074 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:06:40,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:06:40,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,082 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51f99121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:40, skipping insertion in model container [2023-11-12 02:06:40,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:06:40" (1/1) ... [2023-11-12 02:06:40,203 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:06:40,482 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_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i[4493,4506] [2023-11-12 02:06:40,491 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_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i[4553,4566] [2023-11-12 02:06:41,622 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:41,623 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:41,624 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:41,625 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:41,626 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:41,642 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:41,643 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:41,645 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:41,646 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:41,648 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:41,649 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:41,650 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:41,651 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,247 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 02:06:42,248 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 02:06:42,250 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 02:06:42,252 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 02:06:42,254 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 02:06:42,255 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 02:06:42,256 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 02:06:42,257 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 02:06:42,258 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 02:06:42,259 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 02:06:42,424 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,424 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,430 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,440 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:42,558 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:06:42,586 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_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i[4493,4506] [2023-11-12 02:06:42,587 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_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/sv-benchmarks/c/aws-c-common/aws_array_list_copy_harness_negated.i[4553,4566] [2023-11-12 02:06:42,689 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,690 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,690 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,693 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,695 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,710 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,711 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,713 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,714 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,717 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,718 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,719 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,719 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,788 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 02:06:42,790 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 02:06:42,791 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 02:06:42,792 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 02:06:42,795 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 02:06:42,797 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 02:06:42,798 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 02:06:42,799 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 02:06:42,799 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 02:06:42,800 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 02:06:42,855 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,856 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,858 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,864 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 02:06:42,879 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7743-7754] [2023-11-12 02:06:42,916 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:06:43,173 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,173 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,173 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,173 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,174 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,174 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,175 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,175 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,175 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,175 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,176 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,176 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,177 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,177 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,177 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:06:43,185 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:06:43,186 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43 WrapperNode [2023-11-12 02:06:43,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:06:43,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:43,188 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:06:43,188 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:06:43,195 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43" (1/1) ... [2023-11-12 02:06:43,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43" (1/1) ... [2023-11-12 02:06:43,441 INFO L138 Inliner]: procedures = 690, calls = 1674, calls flagged for inlining = 52, calls inlined = 7, statements flattened = 696 [2023-11-12 02:06:43,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:06:43,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:06:43,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:06:43,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:06:43,453 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43" (1/1) ... [2023-11-12 02:06:43,453 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43" (1/1) ... [2023-11-12 02:06:43,464 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43" (1/1) ... [2023-11-12 02:06:43,470 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43" (1/1) ... [2023-11-12 02:06:43,519 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43" (1/1) ... [2023-11-12 02:06:43,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43" (1/1) ... [2023-11-12 02:06:43,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43" (1/1) ... [2023-11-12 02:06:43,560 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43" (1/1) ... [2023-11-12 02:06:43,586 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:06:43,587 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:06:43,588 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:06:43,588 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:06:43,589 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43" (1/1) ... [2023-11-12 02:06:43,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:06:43,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:43,625 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:06:43,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:06:43,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:06:43,677 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-12 02:06:43,677 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-12 02:06:43,677 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-12 02:06:43,678 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-12 02:06:43,678 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 02:06:43,678 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 02:06:43,678 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2023-11-12 02:06:43,679 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2023-11-12 02:06:43,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:06:43,685 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 02:06:43,685 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 02:06:43,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 02:06:43,685 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 02:06:43,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:06:43,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:06:43,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:06:43,686 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-12 02:06:43,686 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-12 02:06:43,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:06:43,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:06:43,687 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 02:06:43,687 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 02:06:43,688 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 02:06:43,688 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 02:06:43,688 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-12 02:06:43,688 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-12 02:06:43,688 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-12 02:06:43,688 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-12 02:06:43,688 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:06:43,689 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:06:43,689 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-12 02:06:43,689 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-12 02:06:43,689 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2023-11-12 02:06:43,690 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2023-11-12 02:06:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:06:43,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:06:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:06:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 02:06:43,691 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 02:06:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 02:06:43,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 02:06:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:06:43,691 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-12 02:06:43,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-12 02:06:43,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:06:44,071 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:06:44,073 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:06:45,214 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:06:45,225 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:06:45,225 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:06:45,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:45 BoogieIcfgContainer [2023-11-12 02:06:45,229 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:06:45,232 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:06:45,233 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:06:45,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:06:45,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:06:40" (1/3) ... [2023-11-12 02:06:45,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36833305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:45, skipping insertion in model container [2023-11-12 02:06:45,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:06:43" (2/3) ... [2023-11-12 02:06:45,240 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36833305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:06:45, skipping insertion in model container [2023-11-12 02:06:45,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:06:45" (3/3) ... [2023-11-12 02:06:45,241 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_copy_harness_negated.i [2023-11-12 02:06:45,262 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:06:45,262 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:06:45,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:06:45,342 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;@3f52eecc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:06:45,342 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:06:45,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2023-11-12 02:06:45,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2023-11-12 02:06:45,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:45,368 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 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] [2023-11-12 02:06:45,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:45,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:45,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1428143905, now seen corresponding path program 1 times [2023-11-12 02:06:45,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:45,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782404100] [2023-11-12 02:06:45,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:45,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:45,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:46,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:46,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782404100] [2023-11-12 02:06:46,062 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-12 02:06:46,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111991190] [2023-11-12 02:06:46,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:46,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:46,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:46,072 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:46,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:06:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:46,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:06:46,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2023-11-12 02:06:47,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:47,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111991190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:47,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:47,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:06:47,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985329354] [2023-11-12 02:06:47,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:47,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:06:47,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:47,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:06:47,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:06:47,129 INFO L87 Difference]: Start difference. First operand has 209 states, 119 states have (on average 1.184873949579832) internal successors, (141), 120 states have internal predecessors, (141), 71 states have call successors, (71), 17 states have call predecessors, (71), 17 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-12 02:06:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:47,713 INFO L93 Difference]: Finished difference Result 416 states and 618 transitions. [2023-11-12 02:06:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:06:47,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 145 [2023-11-12 02:06:47,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:47,730 INFO L225 Difference]: With dead ends: 416 [2023-11-12 02:06:47,730 INFO L226 Difference]: Without dead ends: 206 [2023-11-12 02:06:47,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:06:47,745 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 277 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:47,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 785 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:06:47,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2023-11-12 02:06:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2023-11-12 02:06:47,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 116 states have (on average 1.1724137931034482) internal successors, (136), 118 states have internal predecessors, (136), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2023-11-12 02:06:47,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 289 transitions. [2023-11-12 02:06:47,872 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 289 transitions. Word has length 145 [2023-11-12 02:06:47,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:47,872 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 289 transitions. [2023-11-12 02:06:47,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-12 02:06:47,873 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 289 transitions. [2023-11-12 02:06:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-12 02:06:47,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:47,878 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 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] [2023-11-12 02:06:47,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:48,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:48,090 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:48,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:48,090 INFO L85 PathProgramCache]: Analyzing trace with hash 484121766, now seen corresponding path program 1 times [2023-11-12 02:06:48,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:48,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210383975] [2023-11-12 02:06:48,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:48,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:48,223 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:06:48,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951453276] [2023-11-12 02:06:48,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:48,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:48,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:48,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:48,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:06:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:48,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 2473 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:06:48,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2023-11-12 02:06:48,878 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:48,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:48,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210383975] [2023-11-12 02:06:48,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:06:48,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951453276] [2023-11-12 02:06:48,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951453276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:48,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:48,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:06:48,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119531285] [2023-11-12 02:06:48,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:48,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:06:48,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:48,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:06:48,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:06:48,883 INFO L87 Difference]: Start difference. First operand 206 states and 289 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-12 02:06:48,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:48,963 INFO L93 Difference]: Finished difference Result 410 states and 588 transitions. [2023-11-12 02:06:48,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:06:48,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 160 [2023-11-12 02:06:48,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:48,976 INFO L225 Difference]: With dead ends: 410 [2023-11-12 02:06:48,976 INFO L226 Difference]: Without dead ends: 211 [2023-11-12 02:06:48,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:06:48,979 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 10 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:48,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 815 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:48,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-12 02:06:49,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2023-11-12 02:06:49,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (82), 70 states have call predecessors, (82), 70 states have call successors, (82) [2023-11-12 02:06:49,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 291 transitions. [2023-11-12 02:06:49,057 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 291 transitions. Word has length 160 [2023-11-12 02:06:49,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:49,058 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 291 transitions. [2023-11-12 02:06:49,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2023-11-12 02:06:49,058 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 291 transitions. [2023-11-12 02:06:49,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-12 02:06:49,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:49,061 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 4, 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] [2023-11-12 02:06:49,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:49,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:49,272 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:49,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:49,272 INFO L85 PathProgramCache]: Analyzing trace with hash -2088842844, now seen corresponding path program 1 times [2023-11-12 02:06:49,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:49,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010768608] [2023-11-12 02:06:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:49,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:49,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:06:49,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208274624] [2023-11-12 02:06:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:49,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:49,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:49,395 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:49,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:06:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:50,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:06:50,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-11-12 02:06:50,103 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:50,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:50,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010768608] [2023-11-12 02:06:50,103 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:06:50,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208274624] [2023-11-12 02:06:50,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208274624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:50,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:50,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:06:50,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277355725] [2023-11-12 02:06:50,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:50,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:06:50,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:50,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:06:50,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:06:50,107 INFO L87 Difference]: Start difference. First operand 208 states and 291 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-12 02:06:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:50,651 INFO L93 Difference]: Finished difference Result 383 states and 533 transitions. [2023-11-12 02:06:50,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:06:50,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 160 [2023-11-12 02:06:50,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:50,655 INFO L225 Difference]: With dead ends: 383 [2023-11-12 02:06:50,655 INFO L226 Difference]: Without dead ends: 208 [2023-11-12 02:06:50,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:06:50,658 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 270 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:50,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 777 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:06:50,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-12 02:06:50,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2023-11-12 02:06:50,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.1694915254237288) internal successors, (138), 120 states have internal predecessors, (138), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (80), 70 states have call predecessors, (80), 70 states have call successors, (80) [2023-11-12 02:06:50,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 289 transitions. [2023-11-12 02:06:50,700 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 289 transitions. Word has length 160 [2023-11-12 02:06:50,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:50,702 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 289 transitions. [2023-11-12 02:06:50,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-12 02:06:50,702 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 289 transitions. [2023-11-12 02:06:50,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-12 02:06:50,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:50,706 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-12 02:06:50,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 02:06:50,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:50,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:50,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:50,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2066938953, now seen corresponding path program 2 times [2023-11-12 02:06:50,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:50,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959365034] [2023-11-12 02:06:50,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:50,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:51,019 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:06:51,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [827846] [2023-11-12 02:06:51,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:06:51,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:51,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:51,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:51,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:06:51,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:06:51,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:06:51,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:06:51,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2023-11-12 02:06:51,595 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:51,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:51,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959365034] [2023-11-12 02:06:51,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:06:51,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827846] [2023-11-12 02:06:51,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:51,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:51,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:06:51,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659561294] [2023-11-12 02:06:51,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:51,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:06:51,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:51,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:06:51,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:06:51,600 INFO L87 Difference]: Start difference. First operand 208 states and 289 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-12 02:06:51,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:51,653 INFO L93 Difference]: Finished difference Result 269 states and 367 transitions. [2023-11-12 02:06:51,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:06:51,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 175 [2023-11-12 02:06:51,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:51,657 INFO L225 Difference]: With dead ends: 269 [2023-11-12 02:06:51,657 INFO L226 Difference]: Without dead ends: 213 [2023-11-12 02:06:51,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 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 02:06:51,659 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 2 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:51,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1086 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-12 02:06:51,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-11-12 02:06:51,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (82), 71 states have call predecessors, (82), 70 states have call successors, (82) [2023-11-12 02:06:51,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 295 transitions. [2023-11-12 02:06:51,685 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 295 transitions. Word has length 175 [2023-11-12 02:06:51,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:51,686 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 295 transitions. [2023-11-12 02:06:51,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2023-11-12 02:06:51,686 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 295 transitions. [2023-11-12 02:06:51,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-12 02:06:51,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:51,690 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 3, 3, 3, 3, 3, 3, 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] [2023-11-12 02:06:51,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:51,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:51,900 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:51,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:51,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1798085459, now seen corresponding path program 1 times [2023-11-12 02:06:51,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:51,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112358263] [2023-11-12 02:06:51,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:51,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:51,998 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:06:51,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787496947] [2023-11-12 02:06:51,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:51,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:51,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:52,000 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:52,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:06:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:52,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:06:52,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:52,761 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2023-11-12 02:06:52,761 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:52,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:52,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112358263] [2023-11-12 02:06:52,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:06:52,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787496947] [2023-11-12 02:06:52,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787496947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:52,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:52,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:06:52,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933984443] [2023-11-12 02:06:52,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:52,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:06:52,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:52,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:06:52,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:52,765 INFO L87 Difference]: Start difference. First operand 213 states and 295 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-12 02:06:53,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:53,295 INFO L93 Difference]: Finished difference Result 382 states and 524 transitions. [2023-11-12 02:06:53,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:06:53,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) Word has length 181 [2023-11-12 02:06:53,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:53,298 INFO L225 Difference]: With dead ends: 382 [2023-11-12 02:06:53,298 INFO L226 Difference]: Without dead ends: 213 [2023-11-12 02:06:53,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:06:53,301 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 298 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:53,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 939 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:06:53,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-12 02:06:53,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2023-11-12 02:06:53,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 122 states have (on average 1.1639344262295082) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 19 states have return successors, (77), 71 states have call predecessors, (77), 70 states have call successors, (77) [2023-11-12 02:06:53,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 290 transitions. [2023-11-12 02:06:53,324 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 290 transitions. Word has length 181 [2023-11-12 02:06:53,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:53,324 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 290 transitions. [2023-11-12 02:06:53,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 4 states have call predecessors, (26), 4 states have call successors, (26) [2023-11-12 02:06:53,325 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 290 transitions. [2023-11-12 02:06:53,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2023-11-12 02:06:53,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:53,328 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:06:53,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:53,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:53,539 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:53,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash -71678011, now seen corresponding path program 1 times [2023-11-12 02:06:53,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:53,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502691653] [2023-11-12 02:06:53,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:53,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:53,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:06:53,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932033479] [2023-11-12 02:06:53,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:53,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:53,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:53,681 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:53,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:06:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:54,369 INFO L262 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 02:06:54,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:54,493 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2023-11-12 02:06:54,493 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:54,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:54,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502691653] [2023-11-12 02:06:54,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:06:54,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932033479] [2023-11-12 02:06:54,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932033479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:54,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:54,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:06:54,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430687837] [2023-11-12 02:06:54,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:54,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:06:54,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:06:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:54,497 INFO L87 Difference]: Start difference. First operand 213 states and 290 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-12 02:06:54,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:54,999 INFO L93 Difference]: Finished difference Result 379 states and 509 transitions. [2023-11-12 02:06:55,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:06:55,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 195 [2023-11-12 02:06:55,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:55,003 INFO L225 Difference]: With dead ends: 379 [2023-11-12 02:06:55,003 INFO L226 Difference]: Without dead ends: 211 [2023-11-12 02:06:55,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:06:55,005 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 297 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:55,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 934 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:06:55,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-12 02:06:55,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2023-11-12 02:06:55,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 122 states have internal predecessors, (140), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2023-11-12 02:06:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 283 transitions. [2023-11-12 02:06:55,026 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 283 transitions. Word has length 195 [2023-11-12 02:06:55,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:55,027 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 283 transitions. [2023-11-12 02:06:55,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-12 02:06:55,027 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 283 transitions. [2023-11-12 02:06:55,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2023-11-12 02:06:55,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:55,031 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2023-11-12 02:06:55,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:55,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:55,242 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:55,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:55,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1712202978, now seen corresponding path program 1 times [2023-11-12 02:06:55,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:55,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658204720] [2023-11-12 02:06:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:55,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:55,359 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:06:55,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732018600] [2023-11-12 02:06:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:55,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:55,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:55,361 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:55,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:06:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:56,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:06:56,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2023-11-12 02:06:56,209 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:06:56,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:06:56,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658204720] [2023-11-12 02:06:56,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 02:06:56,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732018600] [2023-11-12 02:06:56,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732018600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:06:56,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:06:56,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:06:56,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896214139] [2023-11-12 02:06:56,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:06:56,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:06:56,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:06:56,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:06:56,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:06:56,212 INFO L87 Difference]: Start difference. First operand 211 states and 283 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2023-11-12 02:06:56,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:06:56,265 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2023-11-12 02:06:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:06:56,266 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) Word has length 210 [2023-11-12 02:06:56,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:06:56,269 INFO L225 Difference]: With dead ends: 269 [2023-11-12 02:06:56,269 INFO L226 Difference]: Without dead ends: 220 [2023-11-12 02:06:56,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:06:56,271 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 4 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:06:56,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1350 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:06:56,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2023-11-12 02:06:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2023-11-12 02:06:56,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 123 states have (on average 1.1544715447154472) internal successors, (142), 124 states have internal predecessors, (142), 71 states have call successors, (71), 17 states have call predecessors, (71), 18 states have return successors, (72), 71 states have call predecessors, (72), 70 states have call successors, (72) [2023-11-12 02:06:56,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2023-11-12 02:06:56,291 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 210 [2023-11-12 02:06:56,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:06:56,292 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2023-11-12 02:06:56,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 1 states have call successors, (24) [2023-11-12 02:06:56,293 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2023-11-12 02:06:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2023-11-12 02:06:56,296 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:06:56,297 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2023-11-12 02:06:56,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:06:56,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:56,509 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:06:56,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:06:56,510 INFO L85 PathProgramCache]: Analyzing trace with hash 870357412, now seen corresponding path program 1 times [2023-11-12 02:06:56,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:06:56,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152619189] [2023-11-12 02:06:56,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:56,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:06:56,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 02:06:56,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [42509730] [2023-11-12 02:06:56,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:06:56,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:06:56,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:06:56,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:06:56,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29c52b5b-3e7f-4b71-9ddb-45e6c4317ebf/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:06:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:06:57,422 INFO L262 TraceCheckSpWp]: Trace formula consists of 3046 conjuncts, 111 conjunts are in the unsatisfiable core [2023-11-12 02:06:57,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:06:58,455 INFO L322 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2023-11-12 02:06:58,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 37 [2023-11-12 02:06:58,503 INFO L322 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2023-11-12 02:06:58,504 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 37 [2023-11-12 02:06:58,855 WARN L876 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.offset|))) is different from true [2023-11-12 02:07:35,260 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-12 02:07:35,276 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-12 02:07:36,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-12 02:07:36,313 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-12 02:07:36,682 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 334 proven. 36 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-12 02:07:36,682 INFO L327 TraceCheckSpWp]: Computing backward predicates...